#linuxcnc Logs

Jan 29 2018

#linuxcnc Calendar

12:03 AM Contract_Pilot: I think i got this spindle tuned in..
12:09 AM Contract_Pilot: Now to back up the settings... this time will place them on NAS and Multiple USB Sticks
12:09 AM Contract_Pilot: Maybe in the cloud also.
12:27 AM Contract_Pilot: Next Project Get the Spindle Encoder verified its working gets counts.
12:29 AM Contract_Pilot: I only have A+B+Z+ THink this chip requires it A-B-Z- als
12:29 AM Contract_Pilot: also
12:31 AM pink_vampire: how to locate this hole?
12:32 AM pink_vampire: https://i.imgur.com/x2M9xg5.jpg
12:32 AM pink_vampire: i need to drill it
12:33 AM Wolf__: by coordinates
12:33 AM pink_vampire: let me take a pic of the setup
12:36 AM Contract_Pilot: Quadruple Differential Line Receiver With 3-State Outputs
12:36 AM XXCoder: use test indictor to zero around the boss, then move it to hole offset from center of shaft
12:36 AM XXCoder: unless that cut was already milled
12:36 AM pink_vampire: https://i.imgur.com/yU7vh83.jpg
12:36 AM pink_vampire: this is the setup
12:36 AM Wolf__: XXCoder likes things the hard way
12:37 AM XXCoder: use hold in way that flat is parallel with jaws
12:37 AM XXCoder: then figure it out by lath where to go
12:37 AM XXCoder: *math
12:38 AM jesseg: Howdy folks
12:38 AM XXCoder: hey
12:38 AM Wolf__: I would get the flat parallel with the fix jaw, 0 on the flat, then find center and coordinate to hole
12:38 AM pink_vampire: i'm going to use the probe + solidworks to fide the location of the hole
12:39 AM XXCoder: fancy
12:40 AM pink_vampire: yeah :-)
12:40 AM XXCoder: I want to make a probe evenually lol
12:40 AM pink_vampire: it is super simple
12:43 AM gloops: today is day 0
12:43 AM pink_vampire: gloops: ??
12:43 AM gloops: or maybe tommorrow
12:44 AM Wolf__: so -1
12:44 AM pink_vampire: what is day 0?
12:44 AM gloops: day 0 was the day pol pot set to reset history, one that day all previous history was deleted
12:44 AM gloops: so my router might run today
12:45 AM pink_vampire: https://en.wikipedia.org/wiki/Zero-day_(computing)
12:46 AM gloops: a new start
12:46 AM IchGucksLive: morning from germany
12:46 AM gloops: morning
12:46 AM jesseg: Good morning IchGucksLive
12:46 AM pink_vampire: hi IchGucksLive
12:46 AM IchGucksLive: fog dark cold rain
12:47 AM IchGucksLive: so a nice day to construct routers
12:47 AM gloops: its a nice day to do anything but construct routers lol
12:51 AM roycroft: it got up to 22 here today!
12:51 AM roycroft: we blew away the old record
12:52 AM XXCoder: 22c?
12:53 AM XXCoder: or 22 inches of rain ;)
12:53 AM pink_vampire: https://i.imgur.com/A9csbDF.jpg
12:53 AM pink_vampire: it is rotated by 18.4 deg
12:54 AM XXCoder: yay cos/sin time!
12:54 AM pink_vampire: noooo
12:54 AM pink_vampire: this is 2018
12:54 AM Wolf__: why not rotate the part to 0 angle
12:55 AM roycroft: 22c
12:55 AM roycroft: i think that's a record here for the month of january, not just for the day
12:55 AM pink_vampire: https://i.imgur.com/PNxDcGf.jpg
12:56 AM XXCoder: yeah here broke record for hottest jan too
12:56 AM Wolf__: no idea what you are doing there pink...
12:57 AM XXCoder: Wolf__: she just measured the angle and changed part on solidworks so she has coord of holes
01:00 AM Wolf__: not the way I would try doing it, too many ways for it to be inaccurate
01:01 AM gloops: well, will have to phone round later, need 2 nuts m11 1mm pitch, seems no everyday item uses them, no tap
01:02 AM roycroft: make them with a single point tool
01:02 AM pink_vampire: I clamp the part crooked in the vise, and take the angle with the probe then got the center of the part, and rotate it 18.4 deg, in solidworks
01:02 AM pink_vampire: Wolf__: ^
01:03 AM gloops: could try in lathe, would be a bit of messing about though id rather just buy a few if i can find anyway
01:03 AM gloops: find any
01:03 AM Wolf__: I would put the part in the vise, indicate the flat to 0°, then use coordinates to get to the hole location (find edges first)
01:04 AM XXCoder: Wolf__: yeah would be easier
01:05 AM Wolf__: also dont have to worry about tiny amount of backlash throwing the trig off by a lot
01:05 AM pink_vampire: Wolf__: the hole is not on center anyway
01:06 AM Wolf__: if you know where the 0° angle/flat is and center of the diameter you know where everything is
01:07 AM pink_vampire: so, i did the same, but with 18.4° not 0°
01:08 AM Wolf__: yeah, but getting that angle isnt easy, large margin for error
01:08 AM XXCoder: its easy with probe
01:08 AM pink_vampire: just probe 2 points on it
01:09 AM Wolf__: whats the accuracy on the probe?
01:09 AM Wolf__: under 0.0001”?
01:10 AM pink_vampire: better then the machine
01:13 AM pink_vampire: looks good to me https://i.imgur.com/wWZ3DIs.jpg
01:14 AM XXCoder: looks like well placed but visual dont matter below .01 tol
01:15 AM pink_vampire: yeah :)
01:18 AM IchGucksLive: pink_vampire: dont you got a prism
01:18 AM IchGucksLive: not a good clamp
01:18 AM pink_vampire: what do you mean?
01:18 AM IchGucksLive: i woudt make a call at my students if they lamp that way
01:19 AM Wolf__: v-block?
01:19 AM pink_vampire: for drilling?
01:20 AM pink_vampire: the bottom was face, the side is raw material,
01:20 AM pink_vampire: V block is good is the side is good, here the reference surface is the bottom
01:21 AM IchGucksLive: https://www.ebay.de/itm/WABECO-Prismenpaar-Spannprisma-Prismen-Spann-30-mm-11305/142236088395
01:21 AM IchGucksLive: somthing like that
01:22 AM XXCoder: yep v-block
01:22 AM Wolf__: v-block helps make sure the part is actually perpendicular in the vise
01:23 AM IchGucksLive: i need to learn english
01:23 AM pink_vampire: not is the side is not round
01:23 AM pink_vampire: is - if*
01:23 AM IchGucksLive: we got a 21year old now in school From England to teatch english
01:23 AM IchGucksLive: may i show up at here office
01:24 AM IchGucksLive: at age 70+ with a US passport
01:24 AM IchGucksLive: im off for construction
01:28 AM pink_vampire: I lost the part that go in the hole O_O
01:29 AM Wolf__: what?
01:29 AM pink_vampire: i lost it
01:30 AM XXCoder: losr the tool? other part?
01:31 AM pink_vampire: the small part that need to go in the hole
01:31 AM pink_vampire: it was in my hand, and now is gone!
01:33 AM MarcelineVQ: is it in the hole?
01:33 AM pink_vampire: no
01:34 AM MarcelineVQ: unlucky
01:34 AM XXCoder: parts with legs is annoying
01:34 AM pink_vampire: I'm getting old....
01:34 AM Wolf__: I can relate
01:35 AM Wolf__: probably right in front of you
01:35 AM pink_vampire: time to stop and clean
01:35 AM MarcelineVQ: be sure to check your pockets, that's the worst
01:35 AM MarcelineVQ: turn the house inside out and it was on you the whole time
01:35 AM pink_vampire: MarcelineVQ: I have nails..
01:36 AM XXCoder: it may be hiding in nail
01:36 AM pink_vampire: LOL
01:36 AM pink_vampire: no they short..
01:36 AM gloops: fs dont believe this sht, old pc i had for router - working perfect last night, dead this morning
01:37 AM pink_vampire: power supply
01:37 AM XXCoder: its looong for me :P
01:37 AM XXCoder: but yeah much shorter than what you had before
01:37 AM gloops: its firing up, no display, no keyboard or mouse
01:38 AM pink_vampire: mother board
01:38 AM XXCoder: so pc turned on but display so on dont work? did it do series of beeps?
01:38 AM pink_vampire: or power supply
01:38 AM gloops: it did once, but tried on/off numerous times no beeps
01:39 AM pink_vampire: found it under my keyboard!!
01:39 AM XXCoder: well usually POST beeps tell you whats effed up about it
01:40 AM gloops: if i press buttons on monitor it says 'in power save mode press any key' keyboard isnt responding
01:40 AM XXCoder: hit the psu switch in back then on again
01:40 AM XXCoder: is it wireless keyboard?
01:40 AM XXCoder: battery lasts for ages but not infinite
01:41 AM gloops: fs its on lol. i didnt do anything only on/off
01:42 AM gloops: ive just done that 10 times!
01:44 AM gloops: fsck died with exit status 4
01:44 AM gloops: failed (code 4)
01:45 AM XXCoder: fsck -y automaically fixes partition issues
01:45 AM roycroft: at least it tries to
01:46 AM pink_vampire: that was a HOLE!
01:47 AM gloops: well thats run some checks, i really dont know enough to understand the info
01:47 AM pink_vampire: https://i.imgur.com/ZCQF6su.jpg
01:49 AM gloops: no..on restart linux has now loaded, maybe sorted thanks
01:53 AM XXCoder: you should check into that, hd may be failing
01:53 AM XXCoder: pink heh
01:57 AM pink_vampire: i test the new damper on the saw, and it is work sooooo beautiful!!!!
01:57 AM XXCoder: nice
01:58 AM pink_vampire: i need to make 2 holes in the bottom of the round bar, and make 2 pokets for the head of the screws on the L part
01:58 AM pink_vampire: and call it done
02:01 AM Deejay: moin
02:07 AM jesseg: Mornin' Deejay
02:40 AM gloops: well that old PC seems to be fine now, run updates, but that was the time i was supposed to be spending making the config for the machine, so easy to get behind
02:40 AM XXCoder: murphys
02:41 AM gloops: totally
02:52 AM pink_vampire: I kill my probe!!!!!!!!!
02:52 AM XXCoder: what happened?
02:53 AM pink_vampire: instead find hole center, I did find stock center.
02:53 AM pink_vampire: the brass seam bend
02:54 AM pink_vampire: so i hammer it back to the normal way
02:54 AM pink_vampire: and use the machine as a lathe to make it run true again
02:55 AM pink_vampire: and i got it with about 15 thousandth of TIR
02:56 AM gloops: in the army they teach methods to deal with this kind of disaster scenario
02:56 AM gloops: series of unfortunate events
02:56 AM pink_vampire: then I push it with my finger several times, and now it is about 0.25 thousandth TIR
02:57 AM gloops: you blank out the big picture, no matter what has happened, whats gone wrong, what mass of factors are against you, ignore, focus totally on the immediate task in hand
02:58 AM gloops: you have to walk 20 paces to that hill, it matters not that enemy aircraft are firing on you, snipers everywhere, tanks shelling you, you are walking 20 paces, one foot in front of the other, thats all you need to think about
02:59 AM XXCoder: walk? fuck that I would run, random walk so im not that predictable
03:00 AM gloops: well yeah, but thats all you need to think about, if you put that walk in context youd freak out
03:00 AM gloops: im just drilling a hole, checking a line, im not building a machine, nothing has gone wrong
03:05 AM gloops: if you think about it, you can definately build in expectations of the outcome
03:08 AM XXCoder: pink_vampire: so it isnt usable anymore or?
03:11 AM pink_vampire: I will upload a video and give you the final inspection
03:14 AM pink_vampire: XXCoder: https://i.imgur.com/0yne9dP.mp4
03:15 AM XXCoder: interesting
03:15 AM XXCoder: .00025 error
03:15 AM XXCoder: only one direction
03:16 AM pink_vampire: what do you mean only one direction?
03:16 AM XXCoder: seemed to me that at 3 points its at 0, but one is +.00025?
03:17 AM XXCoder: guess not
03:17 AM pink_vampire: I need to re attach the ball
03:18 AM pink_vampire: XXCoder: it also can be oval surface
03:20 AM XXCoder: probably
03:20 AM pink_vampire: we ant to believe it is round, but i cut it with a file by hand....
03:20 AM XXCoder: yeah feedback could make it more oval
03:41 AM pink_vampire: the ball is attached!!
04:02 AM XXCoder: hows its position now?
04:12 AM pink_vampire: I did the assembly, and now I'm calibrating it
04:13 AM XXCoder: cool
04:33 AM pink_vampire: after calibration +-0.01mm
04:34 AM pink_vampire: but the machine XY accuracy is also +-0.01
04:34 AM XXCoder: not too bad. if stacked together it would be off by .02 mm max
04:34 AM pink_vampire: so i'm happy with it, it is better then before. (+-0.02)
04:35 AM pink_vampire: it is not it is the max TIR
04:39 AM pink_vampire: also because it is a plastic body, it will drift a bit over time until it stable
04:45 AM XXCoder: cool
04:47 AM pink_vampire: I did probing for the hole!
04:49 AM XXCoder: worked great?
04:52 AM pink_vampire: I think
04:55 AM pink_vampire: i took a pic
04:57 AM pink_vampire: XXCoder: look the the fit of the screw, and the bore next to it https://i.imgur.com/Nh3mQl2.jpg
04:58 AM XXCoder: yeah
04:58 AM pink_vampire: I think the probe did is job!
04:59 AM pink_vampire: next, to drill and tap 2 holes (blind holes) in the bottom of the round bar
04:59 AM XXCoder: so making nice progress on project eh
05:00 AM pink_vampire: yeah!
05:09 AM XXCoder: man I want to make a probe someday
05:09 AM XXCoder: it'd have to be special design.
05:09 AM XXCoder: it has to be less than inch outside collet
05:10 AM pink_vampire: less then 1" diameter?
05:10 AM XXCoder: no length
05:10 AM XXCoder: width dont matter much on router
05:11 AM pink_vampire: 1" body without the tip?
05:11 AM XXCoder: heh I'd like it to include tip but doubt thats even possible
05:12 AM XXCoder: maybe can use longer bodies if it can be attached to a offset from spindle itself
05:12 AM jthornton: morning
05:13 AM XXCoder: hey
05:13 AM XXCoder: mn
05:13 AM XXCoder: *man
05:13 AM XXCoder: meltdown and spectre is killing cpu companies hard
05:14 AM XXCoder: still no serious fixes to that
05:14 AM XXCoder: in least firefox patched to block possible remote-exploit of that.
05:15 AM pink_vampire: you can use the machine at your work to make vary small core from fiber glass?
05:16 AM XXCoder: i'm not planning it till I get my cnc router its own space, along with rest of tools
05:16 AM XXCoder: then I can finally think about what to do.
05:16 AM pink_vampire: then glue the the grooves small sections of 1/16" rouns
05:17 AM pink_vampire: round bars
05:18 AM pink_vampire: I think you can make the body less then 1/2" length.
05:18 AM XXCoder: LOL https://www.youtube.com/watch?v=HJFodrMe08w
05:18 AM XXCoder: what a dumbass
05:18 AM XXCoder: I'd drain that in a hurry and convert it to something else
05:19 AM XXCoder: or maybe much higher walls in order to keep water in
05:19 AM XXCoder: pink_vampire: possibly yeah. probably quite wide but then width dont really matter. only length and precision and re[peatability.
05:20 AM pink_vampire: I can try to make something
05:20 AM pink_vampire: any favorite shank size?
05:21 AM XXCoder: nah its fine unless you wanna challenge yourself. it won't be remotely useful till I have a shop and it wont happen till 2019
05:21 AM pink_vampire: do you have a lathe?
05:22 AM XXCoder: I dont know how to use a lathe, but TECHINIALLY I do lol the $27 one :P
05:22 AM XXCoder: im sure its not up to that task :)
05:24 AM pink_vampire: LOLLLL
05:24 AM XXCoder: maybe by time my royter is ready I would have 3d printer so can print parts for it
05:24 AM XXCoder: and mill some
05:24 AM pink_vampire: I mean metal working one..
05:25 AM XXCoder: nah
05:25 AM XXCoder: work theres a bunch but I'd have to do it by myself nd I dont know how
05:25 AM pink_vampire: I will try to came up with a design for you <3
05:26 AM XXCoder: thanks
05:29 AM pink_vampire: https://www.ebay.com/itm/Renishaw-TP20-Non-Inhibit-CMM-Probe-Kit-4-Fully-Tested-In-Box-W-90-Day-Warranty/192434885904?epid=1517954361&hash=item2cce035510:g:2DkAAOSwLpdW-brt
05:29 AM pink_vampire: i think even this probe is longer then 1"
05:29 AM XXCoder: and 3 times value of my machine :)
05:30 AM pink_vampire: LOL
05:31 AM pink_vampire: also, sis you saw the new front and light that i made for the machine?
05:31 AM archivist: TP2 should be cheaper to find
05:31 AM XXCoder: no?
05:32 AM XXCoder: arch probably but I sure isnt paying for probe that is hundred bucks or more
05:33 AM archivist: I watch ebay closely, I got 2 TP2 with a CMM for £100
05:34 AM archivist: for 30 I got a probe head, there was a TP20 in the box
05:36 AM pink_vampire: XXCoder: https://i.imgur.com/1BbwoR5.jpg
05:37 AM XXCoder: wow!
05:37 AM XXCoder: nice
05:37 AM pink_vampire: thanks :)
05:39 AM Tom_L: 18F
05:43 AM gloops: found a machine for you archivist
05:44 AM gloops: https://www.ebay.co.uk/itm/Coronet-Minor-Wood-Turning-Lathe-Used-but-still-sevicable-and-works-fine/273043580393?
05:44 AM gloops: i would get that myself if i didnt have other priorities
05:46 AM gloops: lathe, saw table, planer, easy to add a sanding disc
05:47 AM gloops: think thats also a mortising attachment
05:56 AM jthornton: 37°F we get the cold tonight
05:57 AM phipli: horrible day out
05:58 AM jthornton: why is that?
05:58 AM phipli: rain
05:58 AM phipli: wind
05:59 AM jthornton: yuck and cold?
05:59 AM XXCoder: pink_vampire: did you see this? https://hackaday.com/2018/01/28/optical-tach-addresses-the-need-for-spindle-speed-control/
05:59 AM phipli: not too cold - quite mild actually
05:59 AM XXCoder: tach display is awesome!
06:00 AM phipli: our wet weather tends to come off the atlantic and so the gulf stream keeps it warm
06:00 AM phipli: XXCoder, good use of a two colour OLED
06:00 AM XXCoder: yeah
06:00 AM phipli: is it one of those fixed two colour ones?
06:00 AM phipli: with a band of one colour at the top?
06:00 AM XXCoder: got no idea how to do that lol
06:01 AM XXCoder: no idea really just looks cool
06:01 AM phipli: XXCoder, it isn't too bad :)
06:01 AM phipli: just a mo...
06:02 AM phipli: https://www.banggood.com/3-Pcs-DC-5V-5mW-650nm-6mm-Laser-Dot-Diode-Module-Red-Copper-Head-Tube-p-1030043.html
06:02 AM phipli: them...
06:02 AM * phipli struggles to find some phototransistors...
06:02 AM phipli: https://www.aliexpress.com/item/100PCS-5mm-940nm-IR-detector-sensor-Infrared-Phototransistor-transmitting/32405374750.html
06:02 AM phipli: something like that?
06:02 AM phipli: (you need to make sure the frequencies are matching)
06:03 AM XXCoder: I dont know how they did sensor part
06:03 AM phipli: which those aren't
06:03 AM XXCoder: my machine I use hall sensor
06:03 AM phipli: they have reflective tape on the spindle
06:03 AM XXCoder: though never did finish it, as I moved in middle of that and no room now
06:03 AM phipli: and then they'll be using a laser and photo transistor
06:03 AM phipli: the photo transistors are fast reacting
06:04 AM phipli: I have the bits, but haven't built one yet
06:04 AM phipli: got distracted (as usual) :)
06:04 AM XXCoder: nice.
06:04 AM XXCoder: I wonder about that nice display tho lol
06:04 AM XXCoder: I bet it'd be nice on display
06:05 AM phipli: I was hoping to feed back into the controller for closed loop
06:05 AM phipli: but those displays are common
06:05 AM phipli: just a mo...
06:05 AM phipli: https://www.banggood.com/0_96-Inch-4Pin-Blue-Yellow-IIC-I2C-OLED-Display-Module-For-Arduino-p-969144.html
06:05 AM phipli: them
06:05 AM phipli: they're not actually two colour
06:05 AM phipli: the screen is part black and yellow, part black and blue
06:07 AM XXCoder: is it defined display or is it addressable anywhere one?
06:07 AM XXCoder: meaning display can be whatever
06:07 AM phipli: it is pixel based
06:07 AM phipli: so you can draw what you like
06:07 AM XXCoder: its surpising cheap..
06:07 AM phipli: it is quite small
06:07 AM XXCoder: I suck really bad on those kinda stuff tho lol
06:08 AM phipli: :(
06:08 AM phipli: the tricky bit would be the MCU code for reading the speed
06:08 AM phipli: but there are probably examples out there already
06:09 AM phipli: http://www.instructables.com/id/Measure-RPM-DIY-Portable-Digital-Tachometer/
06:09 AM phipli: although they use IR stuff for the sensing instead of lasers
06:11 AM XXCoder: interesting
06:11 AM XXCoder: http://jasonchase.com/Jason%20Chase%20Black%20Iron%20Ursa.html
06:11 AM phipli: http://www.instructables.com/id/Add-an-Arduino-based-Optical-Tachometer-to-a-CNC-R/
06:11 AM XXCoder: its not as black as vantablack but still pretty good, and actually buyable
06:11 AM phipli: that looks like the person you posted - full instructions?
06:12 AM XXCoder: looking
06:15 AM phipli: I like "the upside down"
06:20 AM XXCoder: pictures refuse to load here
06:20 AM phipli: instructables or jasonchase.com?
06:21 AM XXCoder: instructables one
06:21 AM phipli: "the upside down" was on your link.
06:21 AM phipli: but save the last instructibles link I sent
06:22 AM phipli: the instructions look detailed enough for you to make one :)
06:22 AM XXCoder: I guess but no pictures makes it bit hard
06:22 AM XXCoder: saved it, can always try it on chromium
06:24 AM XXCoder: http://www.nano-lab.com/singularity-20ml.html 50 bucks for one can lol
06:25 AM XXCoder: but 98.5% is pretty good. perfect for certain applications
06:25 AM phipli: bootlegging?
06:25 AM phipli: :)
06:25 AM XXCoder: lol guess that can be done. but then midnight blue is better for ninja or bootlegging uses
06:27 AM * phipli takes notes...
06:27 AM phipli: midnight blue you say...
06:27 AM phipli: :)
06:27 AM XXCoder: lol
06:27 AM XXCoder: https://culturehustle.com/products/black-v1-0-beta-the-world-s-mattest-flattest-blackest-art-material simplest one
06:28 AM XXCoder: just paint
06:28 AM XXCoder: 95-96%
06:29 AM XXCoder: "Not available to Anish Kapoor" lol
06:30 AM XXCoder: vastly cheaper too. 12 eu
06:30 AM XXCoder: err pounds?
06:31 AM phipli: £ = pounds
06:31 AM XXCoder: yeah guessed so
06:31 AM XXCoder: anyway one of ponental uses is insides of telesope
06:31 AM phipli: Euro = €, Pound = £
06:32 AM XXCoder: you REALLY dont want uncontrolled refections inside it.
06:32 AM Jymmm: Pfff line with tin foil, done!
06:33 AM XXCoder: when I can do stuff I might buy a can just for lols
06:33 AM XXCoder: lol
06:33 AM phipli: so, who is Anish Kapoor...
06:33 AM XXCoder: oh hes only artist that can use vantablack
06:33 AM Jymmm: phipli: The dude that invented the interwebz
06:34 AM XXCoder: that angered a lot of people. then guy invented super super pink color (so pink it cant be accurately videotaped) and he added clause that that artist cant use it
06:34 AM phipli: wasn't that Tim Berners-Lee?
06:34 AM XXCoder: guess black 2.0 people didnt like kapoor also
06:35 AM pink_vampire: DONE!!!!!!!!!
06:35 AM jdh: congrats!
06:35 AM phipli: Well done
06:36 AM phipli: pink_vampire, your exclamation just reminded me that I was meant to be making tea for the missus... I will be undone...
06:36 AM phipli: brb
06:36 AM XXCoder: lol later
06:36 AM Jymmm: phipli: Hey, at least you can line the doghouse youu'll be sleeping in tonight with tin foil =)
06:37 AM XXCoder: https://www.culturehustle.com/collections/frontpage/products/pink-50g-powdered-paint-by-stuart-semple
06:37 AM XXCoder: pinkest pink of all colors
06:39 AM XXCoder: https://www.youtube.com/watch?v=_NzVmtbPOrM he demos that color
06:40 AM phipli: Jymmm, I fetched a kitkat as well to help distract her from the huge delay between her handing me her mug, and me handing it back
06:41 AM Jymmm: phipli: HIGH FIVE for the bouns brownie points =)
06:41 AM * phipli highfives
06:41 AM phipli: :)
06:41 AM archivist: gloops, I shall watch that lathe
06:45 AM pink_vampire: https://i.imgur.com/lvcODOa.jpg
06:45 AM pink_vampire: XXCoder: ^
06:45 AM XXCoder: looking
06:45 AM XXCoder: getting there
06:46 AM pink_vampire: installed https://i.imgur.com/041Vj61.jpg
06:46 AM XXCoder: so it slows down near the end
06:47 AM XXCoder: so it dont slam at end or?
06:47 AM pink_vampire: correct, and also remove some of the blade pressure at the end
06:48 AM pink_vampire: video https://i.imgur.com/2Tyriiy.mp4
06:48 AM XXCoder: nice
06:50 AM phipli: what is the machine pink_vampire
06:50 AM phipli: ?
06:50 AM phipli: saw?
06:50 AM phipli: ah yeah, I can see the blade
06:50 AM Jymmm: Kinda cool... https://www.amazon.com/dp/B01AWGYE12/
06:50 AM pink_vampire: phipli: https://i.imgur.com/w2q72UV.mp4
06:51 AM phipli: pink_vampire, awesome machine :)
06:51 AM pink_vampire: the block, is the base for the damper
06:51 AM pink_vampire: I love it!
06:51 AM * Jymmm looks at pink_vampire and rolls eyes... There she goes again making home cnc porn videos
06:52 AM pink_vampire: pink_vampire: <3 Jymmm
06:53 AM Jymmm: pink_vampire: =)
06:53 AM phipli: Jymmm, doesn't look CNC yet :)
06:53 AM phipli: pink_vampire, next project?
06:53 AM phipli: CNC depth control / speed?
06:53 AM pink_vampire: no.. maybe a limit switch
06:53 AM phipli: or a part loader :)
06:53 AM Jymmm: phipli: Ok, amateur home cnc porn videos?
06:54 AM phipli: ooooo... CNC size cutting
06:54 AM pink_vampire: but i need an AC 120V contactor
06:54 AM phipli: load in the lengths of stock you need and press go
06:54 AM phipli: 60mm cut, 40mm cut... etc etc
06:55 AM pink_vampire: it is 1950 hacksaw, I would love to connect a stem engine to it
06:56 AM phipli: https://www.banggood.com/search/steam-engine.html
06:56 AM phipli: nothing big enough there really
06:57 AM pink_vampire: no no no
06:57 AM pink_vampire: the saw is usa made..
06:57 AM Loetmichel: pink_vampire: make one yourself
06:57 AM Loetmichel: its not that hard
06:57 AM phipli: what he said
06:57 AM Loetmichel: steam engine
06:57 AM pink_vampire: i need a lathe
06:57 AM phipli: I made little reciprocating cylinder one once for a course
06:58 AM Jymmm: pink_vampire: I found a folding bow saw at a yard sale for $2. Looked up the patent 1954 and a photo for an ad back then too, Still has the original blade are stores great in a backpack. Took down a 5" tree in just a couple of minutes, no steam required =)
06:59 AM Jymmm: Well, te tree was already down, laying across the road, I just cut/moved it ourt of the way =)
06:59 AM archivist: no need to make a steam engine when I can play with the real thing TM
07:00 AM Jymmm: archivist: But put that one in your pocket ;)
07:00 AM phipli: archivist, is there a PTO on yours for a hacksaw?
07:01 AM phipli: "do you have a beam engine in your pocket, or are you just happy to see me?"
07:01 AM Jymmm: archivist: hoe tall is the flywheel, 12 feet?
07:01 AM pink_vampire: the paint and even the color is not original, but this is a beauty https://www.youtube.com/watch?v=G0ahIiMTVGM
07:01 AM archivist: no flywheel
07:02 AM Jymmm: archivist: at the museum I mean
07:02 AM * Loetmichel once had a "schepping" once (planer? shaper?) that had more welds on the bed where the vice was mounted than cast iron. it broke a few 100 times it seemed ;)
07:02 AM archivist: 30 tons non rotating
07:02 AM Loetmichel: -once
07:02 AM phipli: Loetmichel, might be "shaping machine"?
07:03 AM Loetmichel: yes
07:03 AM XXCoder: very not oshu compliant lol
07:03 AM pink_vampire: XXCoder: what do you mean?
07:04 AM archivist: Jymmm, http://www.middleton-leawood.org.uk/leawood/photos.html
07:04 AM XXCoder: oshu is safety for working laws, like cover belts, so on
07:04 AM XXCoder: fences if fall risk so on
07:05 AM Loetmichel: https://www.youtube.com/watch?v=HmQbO1FX13w <- something like that, but much older, german manufacturer from before WW2 and repaired a 1000 times.
07:06 AM * jthornton laughs at some of the silly osha things he has seen in the past like a fine for the bathroom stall dividers being an inch too high lol
07:06 AM Loetmichel: to HIGH?
07:06 AM Loetmichel: why is THAT a problem?
07:06 AM XXCoder: there is people that cant lift leg high enough
07:06 AM XXCoder: my dad was one of em
07:06 AM jthornton: yea the bottom was too high
07:07 AM jthornton: one osha guy told my boss to design the noise out of nail making machines
07:07 AM XXCoder: oh thinking of shower "wall" step over prevent water splash out
07:07 AM XXCoder: nevermind
07:07 AM Loetmichel: ah, you mean the space below the divider was to high
07:07 AM Loetmichel: not the stall divider itself
07:07 AM Loetmichel: i see
07:07 AM jthornton: aye
07:08 AM XXCoder: it protects splashing I guess
07:08 AM pink_vampire: where can I get a 120V contactor?
07:09 AM phipli: Loetmichel, I think, but I might be wrong, my dad has a shaper that is not automated - it has a big leaver on the side you have to pull!
07:09 AM jthornton: https://mesaus.com/index.php?route=product/category&path=74_77
07:09 AM phipli: certificate error
07:10 AM archivist: had a few cert errors today
07:10 AM Loetmichel: pink_vampire: that steam engine dosent look big enough to do any real sawing though
07:10 AM jthornton: yea, paid for on the 10th but it still expired on the 25th and they are trying to fix it
07:10 AM jthornton: first price $39, renewal price $59!
07:11 AM Loetmichel: it looks nice, but its cylinder/posten looks way to small to provide any meaningful torque to the saw
07:11 AM jthornton: before the year is up I'll be on some other ISP
07:11 AM phipli: who do you use jt?
07:12 AM phipli: "webhost4life"?
07:13 AM jthornton: yea
07:14 AM pink_vampire: Loetmichel: the original motor is 1/3 HP
07:15 AM phipli: you know, I think kicad is actually easier to use than eagle, even the first time you use it
07:15 AM XXCoder: kicad = circuit design?
07:15 AM phipli: yar
07:16 AM phipli: main issue is that it is slightly reliant on keyboard shortcuts, but assumes you know them
07:16 AM phipli: but found a good video tutorial and it is already better than eagle in some ways
07:16 AM phipli: making new components is a lot easier
07:17 AM pink_vampire: Loetmichel: this is a 1/2HP https://www.youtube.com/watch?v=XgTwbnRrEYA
07:17 AM phipli: some aspects of the UI are... non-conventional
07:17 AM XXCoder: pink LOL advert video was about toys water force.
07:18 AM XXCoder: exactly what steam is :P
07:18 AM pink_vampire: Loetmichel: originally the power hacksaw was design to work on stem engine
07:18 AM pink_vampire: i need a shower
07:19 AM Loetmichel: pink_vampire: i take it back then... seems it has enough power. maybe with different gearing though
07:20 AM pink_vampire: the blade that they use is too thick.
07:23 AM pink_vampire: it is need to be the thinnest possible and wide (if you can find one) only the larger power hacksaw can work with the thick blade
07:38 AM Jymmm: pink_vampire: sounds like a waterjet to me
07:39 AM Jymmm: pink_vampire: DIT waterjet https://www.youtube.com/watch?v=Lg__B6Ca3jc
07:39 AM Jymmm: DIY
07:41 AM pink_vampire: he has an updated version
07:42 AM Jymmm: pink_vampire: link?
07:43 AM pink_vampire: https://www.youtube.com/watch?v=qAIDFaKhcZE
07:46 AM gloops: well there wont be any start up today i dont think
07:47 AM pink_vampire: wazer?
07:48 AM gloops: putting limit switches on
07:49 AM gloops: well, home switches, and finding out where i cant drill and tap once things are assembled
07:49 AM pink_vampire: gloops: I lost you
07:49 AM pink_vampire: what is the topic?
07:50 AM gloops: im just saying i wont be testing my router today
07:50 AM gloops: as last bits and bobs taking longer than expected
07:50 AM pink_vampire: :(
08:02 AM Jymmm: pink_vampire: ty
08:02 AM pink_vampire: ?
08:02 AM Jymmm: pink_vampire: for the ilink
08:02 AM Jymmm: link*
08:03 AM pink_vampire: np
08:04 AM pink_vampire: what is the use for "Emergency Collet"?
08:04 AM pink_vampire: https://www.ebay.ca/itm/3pc-NEW-5C-Emergency-Collet-Set-includes-one-each-STEEL-BRASS-and-NYLON/202048769148?hash=item2f0b0b8c7c:g:LwkAAOSwl1xZsHFD
08:04 AM phaxx: for when you don't have the right collet, I guess.
08:04 AM phaxx: "Emergency Collets are soft and can be bored to size/depth/taper/shape to suit a particular component."
08:05 AM archivist: not just for emergencies
08:05 AM phaxx: it's amusing to imagine someone trying to find one to use while there's a fire or something nearby.
08:05 AM phaxx: fuck, fuck, where's that emergency collet, etc.
08:06 AM pink_vampire: this is what i thought.. but the name "Emergency" made me over think it
08:06 AM phaxx: maybe Collet of Convenience would be better.
08:07 AM pink_vampire: probbally
08:15 AM Loetmichel: phaxx: to connect the shaft of the big water pump to your spindle motor of course!
08:15 AM Loetmichel: so you can put out the fire ,)
08:22 AM SpeedEvil: Do you have adequate fire extinguishing in your shop? Just bought several extinguishers
08:23 AM FinboySlick: I assume we're talking about a wood router? ;)
08:27 AM SpeedEvil: You can make anything catch fire, with enough effort.
08:37 AM Jymmm: SpeedEvil: Water?
08:37 AM Jymmm: SpeedEvil: Nitrogen?
08:38 AM Jymmm: SpeedEvil: the Moon?
08:43 AM gloops: might be a question the insurance ask
08:44 AM gloops: oh you had flammable liquids, wood, oil etc, but no fire extinguishers
08:44 AM Jymmm: I have a 80cf nitrogen tank plumbed to the laser
08:45 AM TurBoss: Hello
08:50 AM gloops: hello Turboss
08:52 AM TurBoss: I need a new pc for the control
08:52 AM TurBoss: Will stretch do steps con parport?
08:52 AM TurBoss: With preempt?
08:53 AM TurBoss: Por i should stay con whessy?
08:53 AM * TurBoss is about to nuke android corrector
08:54 AM roycroft: i have jessie running with a preempt kernel
08:55 AM roycroft: i've not tried building one with stretch
08:55 AM roycroft: i don't know if that works or not
08:55 AM roycroft: but you certainly do not need to use wheezy
08:58 AM TurBoss: roycroft: does the jessie do parport steps with premtp?
09:02 AM pcw_home: stretch/Preempt-RT will work with software stepgens but will not be very fast unless you have a fast CPU
09:02 AM pcw_home: ( atoms and the like will have ~ 100 usec latencies )
09:04 AM roycroft: that's not a function of stretch vs. jessie or wheezy
09:04 AM roycroft: it's a function of your cpu vs. other cpus
09:04 AM roycroft: the answer is: install a linux kernel with preempt-rt and do a latency test
09:05 AM roycroft: or buy a mesa card and never worry about it :)
09:05 AM pcw_home: you can do this without even installing with a live CD image on a USB stick
09:05 AM roycroft: that too
09:07 AM skunkworks_: This live though. http://www.linuxcnc.org/testing-stretch-rtpreempt/
09:37 AM JT-Shop: I wonder why it says to not use them
09:41 AM skunkworks_: it is new - and not tested a ton. I think it should be part of the downloads now though.
09:46 AM gloops: 3 home switches on, one lost insert, 2 steps forward 1 step back
09:51 AM SpeedEvil: https://www.aliexpress.com/item/Lcd-Display-Tube-Furnace-Vacuum-Solar-Furnace/32777744276.html
09:51 AM SpeedEvil: ' Power and heating element are OK, but furnace can’t be controlled by program. ' 'Controller or related circuit may be damaged' Solution: Heck controller.'
10:11 AM phipli: SpeedEvil, heh
10:12 AM phipli: hum. picked the wrong footprint for that zener diode... diode is bigger than the crystal
10:12 AM roycroft: jt-shop: your secure certificate expired last fridah, and folks cannot browse your website because of that
10:12 AM roycroft: friday
10:12 AM JT-Shop: roycroft: I paid for it on the 10th and you can still browse you know what to do
10:12 AM roycroft: yes, i have to go through three levels of warnings and make a permanent exception in my keychain
10:13 AM roycroft: which means i can't browse it reasonably :)
10:13 AM roycroft: many folks would not know what to do
10:13 AM JT-Shop: remember me complaining about the renewal price!
10:13 AM roycroft: i don't recall that
10:13 AM roycroft: but i'm old and have no short term memory any more
10:13 AM JT-Shop: I can't do anything about it... it's up to them to fix it
10:13 AM roycroft: sounds like you should be harassing your hosting service
10:13 AM JT-Shop: yea first year $39 renewal $59
10:13 AM phipli: and sue them for lost earnings?
10:13 AM JT-Shop: I have already
10:14 AM JT-Shop: I mentioned lost earnings
10:14 AM roycroft: then it sounds like it's time to go hosting service shopping :)
10:14 AM JT-Shop: yep, I'll be leaving them before the next year
10:14 AM roycroft: great
10:14 AM roycroft: it's really crappy that they won't let you provide them with a valid certificate
10:15 AM roycroft: and even crappier when they force you to pay way too much for one that they provide, and then refuse to install on time
10:15 AM JT-Shop: some I looked at the other day provide it for all your web sites for no extra price
10:17 AM phipli: I've never looked into it
10:17 AM phipli: my provider will give one of the free ones (but not massively interested)
10:17 AM phipli: I don't have a shop though
10:18 AM * JT-Shop wanders out to the other shop to see if the welded cylinder has cooled down
10:18 AM phipli: thought for a second you'd been welding the gas cylinder from the welder...
10:18 AM phipli: urgh
10:23 AM * Jymmm loves the smell of an oxygen explosion in the mornings
10:25 AM * phipli learn the hard way that it turns our you grow back more arm hair after it is all singed off by a propane fireball
10:25 AM phipli: *learnt
10:25 AM skunkworks_: in russia - oxygen breaths you!
10:25 AM IchGucksLive: hi
10:25 AM phipli: afternoon IchGucksLive
10:26 AM phipli: skunkworks_, have you ever got your hands on calcium carbide?
10:26 AM phipli: you can make ice burn
10:26 AM phipli: https://www.youtube.com/watch?v=Pg0RPr_ofZQ
10:40 AM JT-Shop: no, welding the discharge cylinder fixing ring and helix
10:42 AM gloops: im going to have to have my x 0 at the right
10:45 AM gloops: thats like working left handed
10:49 AM IchGucksLive: gloops: set the ref to the right but keep ISA XYZ
10:49 AM JT-Shop: we did have a welder on a rig in west africa that tried to cut the cap off an acetylene tank, never could stop the tank from burning till it ran out of fuel... just kept it cool... welder went to Johannesburg never saw him again
10:50 AM IchGucksLive: gloops: Right hand rule showes tol movement
10:50 AM IchGucksLive: tool positiv
10:52 AM IchGucksLive: ok im off later
11:04 AM enleth: JT-Shop: did he actually say anything? like, why?
11:08 AM jthornton: your just talking to low level person who created a "ticket" for me
11:12 AM phipli: ticket : "FIRE! Helpmeplease?!"
11:13 AM Jymmm: Well all tickets are "EMERGENCY", they are all the same priority =)
11:13 AM Jymmm: When*
11:14 AM jesseg: yeah if everything means the same thing then nothing means anything :P
11:14 AM phipli: localadminrights++
11:15 AM Tom_L: may try to cut something today
11:15 AM Tom_L: hopefully none of my flesh
11:15 AM phipli: :)
11:15 AM Tom_L: just picked up a couple extra cutters
11:16 AM pink_vampire: i need an irc client for the phone
11:16 AM Tom_L: those are pretty useless
11:16 AM Jymmm: pink_vampire: android?
11:16 AM pink_vampire: yes
11:16 AM enleth: reminds me of a local story I think I told here some time ago, about a new guy in a welding shop who complained that the TIG they gave him is bad, so an experienced welder walked over and noticed the CO2 tank hooked up, asked what the hell, did he even read the manual for the welder - and the new guy explained the manual said "use any gas" so he got whatever was closer. joke is, in Polish, the word for
11:16 AM jesseg: pink_vampire, I've tried androirc for android and it does work but I find it quite awkward
11:16 AM Tom_L: unless you got tiny teenage fingers that can txt 80 words a min
11:16 AM enleth: "inert" can mean "any", "whichever"
11:16 AM jthornton: Please hurry and activate my SSL, I've not got any orders in 5 days! I paid for it on 1/10/18 at an inflated rate of $59 and you let the old one expire!
11:17 AM Tom_L: crap, really?
11:17 AM jthornton: aye
11:17 AM * Tom_L smells small claims court
11:17 AM * jthornton smells new ISP
11:17 AM phipli: pink_vampire, I use andchat
11:17 AM cradek: jthornton: I've heard "letsencrypt" gives free certificates
11:17 AM phipli: isn't great, but good enough to keep an eye and talk
11:18 AM jthornton: cradek: thanks
11:18 AM Tom_L: one good reason my server is in the closet
11:18 AM Tom_L: even if it's got a funky ip
11:18 AM pink_vampire: i need to machine some brass
11:18 AM pink_vampire: lathe parts
11:18 AM jthornton: cradek: webhost4life won't accept anyones certificates but their own :(
11:18 AM Tom_L: like cutting butter but it grabs a bit
11:19 AM cradek: bleh
11:19 AM roycroft: cradek: i sold jthornton the exact same certificate as his hosting provider use (this was a year ago) at a much lower cost
11:19 AM roycroft: they refused to use it, and i refunded jthornton so he could buy the same thing from them for a much higher price
11:19 AM Tom_L: figures
11:20 AM pink_vampire: i need to get some sleep
11:20 AM Tom_L: i've had several offer me free space and name
11:20 AM roycroft: nothing is free :)
11:20 AM Tom_L: yeah
11:20 AM Tom_L: they were all on irc
11:20 AM Tom_L: but i gratefully declined
11:22 AM Tom_L: what's normal peck depth for a small mill on an average size bit?
11:22 AM Tom_L: maybe .080" ?
11:22 AM cradek: drilling? maybe half the diameter
11:23 AM Tom_L: i don't wanna stall the motor :D
11:23 AM Contract_Pilot: Need toorder and encoder...
11:23 AM Contract_Pilot: an
11:24 AM Tom_L: why is dxf so darn hard to import into a 3d package?
11:25 AM Tom_L: i got it but man...
11:25 AM Tom_L: it came in as alot of surfaces and ended up as alot of polylines
11:26 AM Tom_L: my cad cam expects to see a 3d model on an import
11:27 AM Tom_L: so i had to bring it in sw or catia and give it some dimension before i could export it out as an iges
11:27 AM Tom_L: the all wanted to bring it in as a drawing file
11:29 AM pink_vampire: Tom_L: the file was done on newer version of SW?
11:29 AM gloops: well just plugged motors and vfd in for first time in months, everything warmed up ok, tried turning screw to miss a step - not that hard really
11:29 AM Tom_L: no
11:29 AM Tom_L: some free package i got the dxf from
11:29 AM Tom_L: acad wouldn't even open it
11:30 AM Tom_L: i got it in sw but on export it left alot of broken lines
11:30 AM gloops: think they are set to half amps ehrn not moving though
11:30 AM Tom_L: ended up using catia which spit the surfaces out all over the place but at least they were in tact
11:30 AM Tom_L: so i had to rejoin them all
11:31 AM Tom_L: funny how different packages react to various format imports
11:32 AM pink_vampire: dxf is a 2d file
11:32 AM pink_vampire: try inkscape
11:33 AM Tom_L: pfft no thanks
11:33 AM Tom_L: i'd rather use a real cad package for this
11:34 AM pink_vampire: what version of SW?
11:35 AM roycroft: sadly, a lot of vendor-provided cad files for their parts are only useful as patterns to trace when you end up redrawing the part yourself
11:36 AM Tom_L: most of the ones i've gotten were ok
11:36 AM slipalong: Need to upgrade the motor om my mill as it's only 750 watts. looking at something 1.5K+
11:37 AM slipalong: is it worth looking at these cheap Chinese water cooled 24,000 rpm and gearing it down to 4:1
11:37 AM slipalong: 6,000 is fine for me
11:38 AM Tom_L: when the time arives i'm gonna go a different route
11:38 AM Tom_L: 6k is good for me as well
11:38 AM roycroft: those are spindles, not motors
11:38 AM roycroft: are you going to chuck a reduction gear in the collet?
11:38 AM roycroft: or do they make motors without the spindle nose?
11:39 AM roycroft: i haven't seen any of those
11:39 AM slipalong: Yes I know do you think you can take the collet holder off
11:39 AM slipalong: dont seem to be many opions on ebay.co.uk
11:39 AM roycroft: no
11:40 AM roycroft: well, you can take the nut off, of course
11:40 AM roycroft: but the collet nose is part of the rotor
11:40 AM slipalong: Im sure I can make a bully that screws on the end
11:40 AM slipalong: pulley
11:41 AM roycroft: i bought one of those spindles for my router table
11:41 AM roycroft: i ran it for about 10 minutes when i first got it and it was fine
11:41 AM roycroft: then it sat for a couple months while i was working on other parts of that project
11:41 AM fragalot: Hi
11:41 AM roycroft: i ran it again and the smoke came out after about 25 seconds
11:41 AM Contract_Pilot: Open Collector encoder will not work with this Quadruple Differential Line Receiver chip need a Line Driver (Differential)
11:41 AM slipalong: its perfect for wood router
11:41 AM roycroft: it is not repairable
11:42 AM roycroft: i bought a different one that arrived on frida
11:42 AM roycroft: y
11:42 AM fragalot: roycroft: everything can be repaired. What it is, is an economic loss.
11:42 AM roycroft: and it's run for about 20 minutes now
11:42 AM roycroft: it would have to be completely rewound, and the bearings replaced, fragalot
11:42 AM fragalot: roycroft: like I said - economic loss :P
11:42 AM roycroft: when the cost of repair exceeds the cost of replacement it is considered non-repairable
11:43 AM slipalong: thats not good:-(
11:43 AM roycroft: slipalong: when i bought the replacement spindle i paide $19.98 for a 4 year extended warranty on it
11:43 AM slipalong: option 2 is a treadmill motor!
11:43 AM roycroft: a lot of folks have good luck with those
11:44 AM * fragalot is looking at buying a reference straight-edge but can't decide if it's worth getting a class 0 vs a class 1 at half the price for his shed
11:44 AM roycroft: i got a bad one the first time, and did not use it enough right away to be able to return it as doa
11:44 AM roycroft: that's on me
11:44 AM fragalot: class 0 is of course much more accurate, but I don't know if it's worth the extra cost if i'm not using it in a stable climate
11:44 AM robi: I have a treadmill motor, still haven't put it on my lathe
11:44 AM roycroft: the extended warranty seemed like a good, cheap investment
11:45 AM roycroft: depends on what you need, fragalot
11:45 AM roycroft: if class 1 is good enough then don't spend the money on class 0
11:45 AM fragalot: roycroft: something that's accurate enough to scrape in the surfaces that the linaer rails will sit on
11:45 AM roycroft: don't buy something just because it's "better" or more accurate
11:46 AM fragalot: so the question there is, is class 1 "accurate enough" for that purpose
11:46 AM fragalot: class 1 only guarantees 0.02mm over 1 meter
11:46 AM fragalot: (heh. "only")
11:46 AM roycroft: are you skilled enough to scrape better than that?
11:46 AM fragalot: yes
11:47 AM roycroft: do you need your rails to be scraped better than that?
11:48 AM fragalot: That, I don't really konw
11:48 AM fragalot: know
11:48 AM roycroft: i would sort that out before investing 2x as much in a class 0 straight edge
11:48 AM fragalot: all i know is that if I don't get them to be more accurate, the machine itself will most certainly be worse
11:55 AM slipalong: roy croft how do you control the VFD from LCNC modbus
11:56 AM roycroft: i don't do that
11:56 AM roycroft: but i know it can be done
11:58 AM Tom_L: beachbumpete's is i think
11:58 AM Tom_L: i also think Connor helped him set it up
12:00 PM Tom_L: g83 does a full retract where G73 doesn't clear the whole hole?
12:02 PM cradek: right
12:02 PM fragalot: Tom_L: the haas youtube channel did a tips&tricks episode on just that
12:02 PM Tom_L: drill cycles vary
12:03 PM fragalot: pfft, everything is standardized, that's why post-processors are as universal as they are.
12:03 PM * fragalot runs away
12:03 PM Tom_L: so the Q number is the same for both of those?
12:03 PM Tom_L: depth to cut per retract
12:03 PM cradek: yeah
12:03 PM Tom_L: thanks
12:04 PM cradek: they're the same cycle except for the retracting vs chip breaking
12:04 PM Tom_L: what does L do on the G73?
12:04 PM Tom_L: right
12:04 PM cradek: L is the same for all the cycles
12:04 PM Tom_L: but what is it?
12:05 PM cradek: repeat
12:05 PM Tom_L: re enter the hole for cleanout?
12:05 PM Cromaglious_: OK, my wifes capguns are on the way
12:05 PM cradek: no it's more useful with G91 and motion
12:05 PM Tom_L: ok
12:05 PM cradek: so you can make a row or circle of holes
12:05 PM Tom_L: i likely won't use it
12:05 PM Tom_L: since cad just does it
12:05 PM cradek: yeah unless hand-coding it's not worth the trouble
12:06 PM Tom_L: so the L is just a counter
12:06 PM IchGucksLive: hi
12:06 PM Tom_L: times to repeat
12:06 PM cradek: yeah
12:08 PM Contract_Pilot: I am thinking that the encoder is working with Open Collector A+B+Z+ only need to find a way to check to see if index pulse is working. https://youtu.be/mK9nxiXyEDI
12:08 PM Tom_L: Contract_Pilot, i looked at mine on a logic analyzer
12:08 PM Tom_L: it's pretty short
12:09 PM Contract_Pilot: Yea, looks like i need to reinvest in some more advanced test equipment.
12:09 PM Tom_L: led might pick it up if you add a pullup resistor to the output
12:09 PM Tom_L: if you move it slow enough
12:10 PM fragalot: hi IchGucksLive
12:10 PM Contract_Pilot: 2,000PPR
12:10 PM cradek: any logic probe will stretch a short pulse
12:10 PM Tom_L: yeah i know
12:10 PM IchGucksLive: ;-)
12:10 PM cradek: and any scope will trigger on it
12:11 PM Tom_L: will halscope pick it up?
12:11 PM fragalot: yeah, short is relative; in electronics analysis equiptment terms, the pulse is very long
12:11 PM cradek: halscope polls its inputs at a certain rate - so it depends
12:12 PM fragalot: it certainly wouldn't show the signal quality
12:13 PM Contract_Pilot: Will have to try halscope
12:16 PM Tom_L: i had trouble getting it to pick mine up consistently
12:16 PM IchGucksLive: servus phragment liegt bei euch in AT noch schnee
12:17 PM fragalot: bless you, IchGucksLive
12:18 PM IchGucksLive: why did you run in a trouble by mee
12:18 PM Contract_Pilot: Just want to verify it is working hahaha
12:19 PM Contract_Pilot: Once it is verifed i can finish up and make this rats nest of wires look nice when i pack it all in a cabinet.
12:20 PM IchGucksLive: hi
12:27 PM Contract_Pilot: So on the hunt for a 3" Double V Belt Pulley with 17.5mm Bore
12:28 PM fragalot: Contract_Pilot: what type of belt profile
12:28 PM Contract_Pilot: Or a 4" Double V with a 19mm Bore.
12:28 PM hazzy: My niece got this for her B-day: https://i.imgur.com/xRY35lF.png
12:28 PM hazzy: I am very jealous, I could use a couple my self
12:29 PM fragalot: Contract_Pilot: can you bore out the ID?
12:29 PM Contract_Pilot: frag not sure
12:29 PM Contract_Pilot: Yea, i can get the ID taken care of.
12:29 PM Contract_Pilot: but the keyway nope.
12:30 PM fragalot: with patience, you can make the keyway on a lathe too
12:30 PM fragalot: you can use a lathe as a shaper in times of need, i've done it quite a few times on mine
12:30 PM fragalot: it just takes forever :D
12:31 PM Contract_Pilot: Just need to change a pulley ratio
12:31 PM Contract_Pilot: was thinking QD style
12:35 PM JT-Shop: this is the second time I've gotten a call someone wanting to verify employment of an employee... I've never had an employee
12:35 PM fragalot: lol
12:35 PM Contract_Pilot: https://www.zoro.com/tb-woods-v-belt-pulley-detachable-2groove-3od-3v302/i/G2180735/feature-product?gclid=EAIaIQobChMIi-a35Of92AIVmONkCh0FAwpkEAQYASABEgINHfD_BwE
12:36 PM Contract_Pilot: Can get metric QD Bushings rather cheap also.
12:43 PM Tom_L: ok, on the G73 chip break is there a word that determines the chip retract distance?
12:43 PM Tom_L: doesn't look like there is
12:43 PM Tom_L: JT-Shop can i come work for you?
01:05 PM fragalot: https://www.shop.santool.de/en/clamping-tools1/collets/575e.html does anyone know if they make this in SK30?
01:05 PM Connor: Tom_L: Yea.. I tweaked a existing modbus driver for a VFD to work for his VFD.. Was a very minor change.. and honestly.. I don't even remember what I did.
01:06 PM IchGucksLive: Gn8
01:07 PM miss0r: Just added two LED strips over the lathe. Damn, Why haven't I done this a long time ago?!
01:08 PM fragalot: miss0r: good lighting is awesome to have
01:09 PM Tom_shop: yep, got one over my mill now and over the workbench
01:09 PM miss0r: Yeah. I used to have one of thoes arcitect lamps there. but I moved it when I installed the DRO, and found that I could no longer have it there. I found myself using a flashlight, when I needed to see details on a bore... I just got fed up :)
01:10 PM fragalot: I'm using the cheapest ikea lights that come on those springy arms
01:10 PM fragalot: and every now & again I fix the little mount they use
01:10 PM miss0r: if it works it works ;)
01:12 PM fragalot: oh thank you german webshop for letting me know I can have the €8 shipping for free if I spend another 468,76.
01:13 PM miss0r: hahaha
01:13 PM Contract_Pilot: I think if i change a059
01:13 PM Contract_Pilot: Carrier frequency during DC
01:13 PM Contract_Pilot: braking form 5 to 15hz it may get rid of that whine when breaking will have to give it a try.
01:16 PM fragalot: https://imgur.com/gallery/ZJOF1P6 ._.
01:17 PM fragalot: for some reason that is so unsettling, :P
01:20 PM miss0r: o_0
01:21 PM miss0r: I'm looking into getting one of thoes outer rotor brushless motors. I'm thinking it should be possible to run one of thoes at a somewhat slow speed and still have some torque to show for ? :)
01:23 PM fragalot: the type they use for RC models?
01:23 PM Rab: miss0r, depends on how much torque you want. Also, below a certain speed they just stall out--the ones with hall-effect sensors are probably more robust than ones where you can only sense back-emf. And cogging is pretty bad at low speeds too.
01:23 PM fragalot: those things are designed to run at thousands of RPM's, and they jitter in 90° intervals
01:24 PM fragalot: well maybe not 90° depending on how many coils they've got, but it's pretty bad :P
01:24 PM miss0r: Yeah. I'm gonna need to find a model with alot more windings than the standard ones. Too large 'steps' to be of any use at low sleeds. But I like the idea that it pulls on a larger rotor = more torque
01:24 PM fragalot: they are indeed very torque-ey for their size
01:25 PM fragalot: not designed for slow speed though, and many of them rely on forced air cooling
01:25 PM Rab: miss0r, I use an outrunner BLDC motor for my spindle, with a 2:1 belt reduction.
01:25 PM miss0r: Yeah, that part cna be an issue
01:25 PM Rab: http://reboots.g-cipher.net/spindle/index.html
01:26 PM fragalot: Rab: when miss0r says "low rpm" what he means is like.. 6µ
01:26 PM fragalot:
01:26 PM miss0r: Yeah, I've seen that part before :)
01:26 PM miss0r: I'm gonna need something in the range of 5-60rpm ish :)
01:26 PM miss0r: Noone knows for sure yet :)
01:27 PM Rab: I think that's called a "stepper"
01:27 PM fragalot: miss0r: long flex-shaft and a manually operated battery drill :P
01:27 PM gloops: why does the motor have to be so small?
01:27 PM Rab: miss0r, oh, is this for the wire EDM head?
01:27 PM miss0r: yeah, only its not wire edm :)
01:27 PM miss0r: Its just a hole puncher/sinker
01:28 PM fragalot: Hm. Seems I'm going to need around 45kg of epoxy
01:28 PM miss0r: gloops: because I want to have a small package. THAT and i've already machined where it needs to go :D
01:28 PM fragalot: this is going to be one hell of a task
01:28 PM Rab: miss0r, they're permanent magnet motors, so like I said cogging is pretty bad at low RPM. Think stepper. Maybe a DC servo + encoder would be better.
01:29 PM Rab: stepper-like
01:29 PM miss0r: fragalot: With such big batches, make sure to do alot of test tasting while mixing ;)
01:29 PM fragalot: miss0r: actually.. Could you fit a little continuous rotation RC servo?
01:29 PM gloops: miss0r you can get longer more powerful motors though - with same flange diamter
01:29 PM fragalot: miss0r: there is no way i'll be able to mix it all in 1 batch, which makes it even more intense, lol
01:29 PM miss0r: gloops: length is also an issue
01:29 PM fragalot: miss0r: I think I'll have to call around to see what the slowest curing epoxy they have is
01:29 PM fragalot: xD
01:29 PM miss0r: fragalot: That is a good idea I think. I wonder what it will look like
01:30 PM fragalot: miss0r: square package like any other servo, but you take out the closed-loop feedback part
01:31 PM fragalot: miss0r: https://www.pololu.com/category/143/continuous-rotation-servos
01:31 PM gloops: 1% catalyst
01:32 PM miss0r: hmmm
01:32 PM fragalot: gloops: i'm worried that if i use too little catalyst that the thing won't harden at all
01:32 PM fragalot: gloops: or improperly so it remains a goopy sticky mess forever
01:32 PM gloops: 1% is fine, i wouldnt go lower - 3% will cook it
01:33 PM fragalot: 3% is quite low, most epoxies i've used require 50 to 100% mixes
01:34 PM gloops: yes sorry im talking in poly numbers
01:35 PM miss0r: fragalot: No time to waste: I ordered this one: https://www.pololu.com/product/2149
01:36 PM miss0r: From another site in germany, it will be here in 2 days :D
01:36 PM miss0r: (the most powerfull one they have)
01:36 PM fragalot: haha
01:36 PM fragalot: do you have something to generate the PPM signal?
01:36 PM miss0r: That ought to do it, it has something like 10x the torque of my small NEMA11
01:37 PM miss0r: I think I can frabricouble something with an arduino & some transistors
01:37 PM miss0r: Allthou, I have no idea what I am talking about here :]
01:37 PM fragalot: oh yeah you can, don't even need the transistors
01:38 PM miss0r: I can see that. (just googled some)
01:38 PM fragalot: assuming your arduino is 5V and not 3v3 :P
01:38 PM miss0r: Nah, I've never realy advanced beyond the UNO
01:38 PM miss0r: Excellent idea with the servo... They are cheap, reliable & super tourqie
01:39 PM fragalot: :-)
01:39 PM miss0r: I don't care what _everybody_ says about you, I think you're alright ;)
01:39 PM fragalot: I think so too.
01:40 PM miss0r: Also, the shaft on the servo is considerably build in some sort of non conductive plastic :] Less worry for me
01:41 PM fragalot: there is a little steel shaft going through it
01:42 PM fragalot: part of me is now wondering if I really need to have the mill base 20cm thick xD
01:42 PM miss0r: hmm. Then I need to make the shaft joint in some plastic I guess. I also need to figure out a fancy way of plugging the hole in the end of the main shaft, so I don't get coolant flowing out in both ends
01:43 PM miss0r: wtf are you building?
01:43 PM fragalot: a tank
01:43 PM fragalot: of a cnc mill
01:43 PM miss0r: got pictures ? :D or is it still only on the drawings ?
01:43 PM fragalot: http://a360.co/2nkCWxK
01:44 PM miss0r: That is blank to me
01:44 PM fragalot: shame I already bought the leadscrews as I could have probably hidden the motors inside of the frame
01:44 PM miss0r: oh. loading
01:44 PM fragalot: takes a while
01:44 PM miss0r: I was just about to recommend that
01:44 PM miss0r: Can't you still do that?
01:44 PM MrHindsight: I get 3 dots that change in size :)
01:45 PM fragalot: miss0r: i'm not sure if I can cut the ballscrews on my lathe without damaging them
01:45 PM fragalot: never tried
01:45 PM miss0r: preferably you'd need some ceramic inserts with a pretty negative rake.
01:45 PM fragalot: my lathe does not like negative rakes
01:45 PM miss0r: and a 'somewhat' rigid lathe
01:46 PM miss0r: Well. I've cut some ballscrews on a 75kg lathe (a benchtop model)
01:46 PM fragalot: i've already replaced the compound with a solid hunk of tool steel to make it usable
01:46 PM MrHindsight: no grinder attachment?
01:46 PM miss0r: back in the day ;D they turned out alright. If you like to get your boogie on with a wiggle wiggle wiggle
01:46 PM fragalot: MrHindsight: i'm not a fan of grinding down a 20mm shaft to 10mm :P
01:46 PM fragalot: miss0r: mine's a 125kg benchtop
01:46 PM miss0r: only a limited lenght of the shaft, mind you ;P
01:47 PM miss0r: It can be done!
01:47 PM fragalot: In that case I'll give it some thought
01:47 PM miss0r: Have you considered ye'oldie trick, of turning the tool upside down and running the lathe backwards? you get alot more stability from a small benchtop lathe that way
01:47 PM fragalot: i'll probably need to put a center on the mill (to the left of the lathe) to support that end of the shaft
01:47 PM fragalot: miss0r: that's how I used to part before I put the tool steel compount replacement in :P
01:48 PM miss0r: you can cut the center on the lathe. Most of the ballscrews(if not all) are only case hardened
01:48 PM fragalot: yeah, but I still need to support it on the far end when I cut that
01:48 PM fragalot: I *think* the 20mm ballscrew will JUST about fit through the spindle
01:48 PM miss0r: Can't it fit through your spindle bore?
01:49 PM gloops: fixed steady
01:49 PM fragalot: sure it can, but it's going to flop around at 750mm length
01:49 PM fragalot: I think it's easier if I just use the mill
01:49 PM miss0r: sure! make a rest for that
01:49 PM fragalot: put a center on there
01:49 PM miss0r: you don't want ALL of that to be over your lathe ways
01:49 PM fragalot: and that can support the shaft whilst I machine the other end
01:49 PM fragalot: acting as a spider
01:50 PM fragalot: gloops: don't have one for my lathe sadly
01:50 PM miss0r: If I were you, I would couple together an external rest for it, behind the spindle bore. Then have as little overhang as possible
01:50 PM fragalot: but even if I did - not sure if the ballscrew riding on that would be something i'd want
01:50 PM fragalot: miss0r: exactly -- that's what I mean by using the mill
01:50 PM fragalot: the mill is on the left of the lathe, so I can put a dead center on the table to support the shaft going through the lathe spindle
01:51 PM miss0r: ahhh... Drilling a center hole for supporting the part BEHIND the spindle. I did not follow you there
01:51 PM fragalot: :3
01:51 PM miss0r: Then we're on the same page :]
01:51 PM miss0r: you had me worried there, for a while :
01:51 PM fragalot: if it wasn't absolutely pissing it down outside i'd go try the short 400mm one right now to see if it cuts well or not
01:51 PM fragalot: haha
01:52 PM gloops: well, you could turn a shaft with a bore in to take the ballscrew end, stick shaft in tailstock chuck, go nice and slow, thing is the chinese would have done this work for $20
01:52 PM miss0r: gloops: sad to hear you use 'the expensive' chinese labour
01:52 PM fragalot: gloops: actually it would have been cheaper to buy the shorter versions than the long ones i've got now
01:52 PM fragalot: so that's a stupid argument :P
01:52 PM fragalot: on the other side
01:53 PM fragalot: having the motors stick out like this means I need less spacers on my Z
01:53 PM miss0r: I like where this is going, but I need to run,.
01:53 PM miss0r: fragalot: You needn't hide the Z-axis motor
01:53 PM fragalot: True
01:53 PM miss0r: Only the X & Y are realy in the way of other stuff
01:53 PM * fragalot gets his sketch on
01:53 PM miss0r: Well, I need to run. See you guys around
02:13 PM gloops: if youve bought the screws make the machine fit them!
02:13 PM fragalot: gloops: my rails don't magically change length
02:13 PM gloops: oh you got had by the same size rails and screws heh
02:14 PM fragalot: yup
02:14 PM fragalot: weren't you complaining a few days ago about someone's design where thye used shorter screws?
02:14 PM gloops: maybe, im just feeling bitchy because my router isnt done
02:14 PM fragalot: xD
02:15 PM gloops: i bought some 400mm rails when i realised matching 300mm rails and screw were pracically useless
02:15 PM gloops: then i used some different rails anyway
02:15 PM fragalot: lol$
02:16 PM gloops: i also cleaned the washing machine filter earlier, now its not turning at all, hopefully the belt came off
02:16 PM gloops: everything is collapsing around me
02:20 PM fragalot: this fusion model is collapsing aroun dme
02:21 PM fragalot: oh this is fantastic
02:21 PM fragalot: you know how fusion tracks "versions" (eg. how many times you've hit save?)
02:21 PM fragalot: when you go back to an older version, what it does is copy that version as a new version
02:22 PM fragalot: but it doesn't mention that v8 is the same as v6 was
02:22 PM fragalot: ._.
02:36 PM gloops: never used it
02:44 PM fragalot: managed to move the X motor inwards with no loss in travel.. now for Y
02:46 PM gloops: if you were gearing down you could have the motor within the length of the screw, parallel to it, with pulleys and belt on end
02:46 PM fragalot: yeah but then i'd need pulleys, and i'd be side-loading the motor that is possibly not designed for that
02:48 PM gloops: maybe, its pretty common though, also with stuff like rack and pinion drive, belt drive the motor is taking lateral pull
02:49 PM Rab: Do toothed pulleys count as side-loading? I think you only need enough tension to maintain full tooth engagement, which should be very low.
02:49 PM gloops: i probably wouldnt want to introduce belts to a design where accuracy is a priority though
02:50 PM Rab: Some belt profiles are very accurate, others less so.
02:50 PM fragalot: Rab: the full 8Nm of torque will also be your side-load
02:50 PM fragalot: anyway point is, I don't need a gear reduction
02:51 PM gloops: Rab ive set mine pretty tight, there is .5mm play in t5 belts
02:55 PM fragalot: http://a360.co/2DLLIQd
02:55 PM gloops: nothing
02:55 PM gloops: screenshot
02:56 PM fragalot: 'sec
02:57 PM fragalot: https://imgur.com/a/KBh3G
02:58 PM fragalot: total mass 430kg
02:58 PM fragalot: though I'm not sure if I could get away with less
02:59 PM gloops: well..its coming, its definitely gelling
03:00 PM gloops: how thick is the z plate?
03:01 PM gloops: 430kg is like 17 bags of sand
03:02 PM fragalot: Z is currently only 20mm; I'm not quite sure if I should use a thicker plate, stack plates, or bolt uprights on to make it more rigid
03:02 PM xunil: fragalot, i have to ask: why such a stout frame?
03:03 PM fragalot: xunil: because there is no such thing as overkill; except when there is.
03:03 PM xunil: haha
03:03 PM fragalot: xunil: also, I have no idea what i'm doing so bigger is better >.>
03:03 PM xunil: carry on then :)
03:03 PM xunil: i also have no idea what i'm doing, but i'm not letting that stop me from helping a friend with a linuxcnc plasma cutter build :)
03:03 PM gloops: 200mm is a lot of drop so far as leverage goes
03:03 PM fragalot: other than a notepad and several days of my life, I have no idea what thickness is acceptable
03:04 PM fragalot: xunil: that's the spirit!
03:04 PM fragalot: gloops: yeah it is,... I do want that travel though
03:04 PM fragalot: if i'm doing hard materials I can always shim them up
03:04 PM xunil: reminds me... has anyone here set up a manual jog button using halui.axis.z.plus & halui.axis.z.minus?
03:05 PM xunil: i've got it to the point where the signals light up in halshow, but it doesn't cause any jogging
03:05 PM xunil: i've set halui.jog-speed
03:05 PM gloops: TurBoss was working on one, posted it last night i think
03:06 PM gloops: someone has also posted this in diycnc machines on facebook
03:08 PM gloops: Allan Madsen
03:08 PM gloops: Yesterday at 12:01am · Sønderborg, Denmark
03:08 PM gloops: I am make my own handheld MPG to linuxcnc.
03:08 PM gloops: Here is the diagram.
03:08 PM gloops: Somtime tomorrow night, i will provide a link, to where you can get the files, to make it work in linuxcnc.
03:10 PM xunil: thanks gloops
03:10 PM xunil: I have a PS3 controller on my taig mill, that works fine, but that's a much older version of linuxcnc; also it uses the analog jog pin
03:10 PM fragalot: I'm loving my MPG setup
03:11 PM Rab: fragalot, ideally the rails will be mounted directly to local bedrock (assuming low seismic activity). Why compromise beyond the stern dictates of practicality? 430kg would still be featherweight for a knee mill.
03:11 PM fragalot: much nicer than the old laptop keyboard way of doing it on my older mill
03:11 PM fragalot: Rab: good job it's a gantry mill and not a knee mill then!
03:11 PM gloops: Ichsguckslive is probably also up on mpg
03:12 PM Rab: fragalot, I'm curious about the wedge shape of the base. Have you analyzed that for resonant modes?
03:13 PM fragalot: Rab: in detail! (it's mostly reducing waste material using arbitrary shapes)
03:13 PM fragalot: I did consider making it a T-shape instead
03:13 PM fragalot: but then I didn't
03:13 PM fragalot: if for no other reason than "it would have f*cked up my fusion360 joints"
03:15 PM MrHindsight: https://ibin.co/2eWjnYtOrXq9.jpg reinforced poly-concrete
03:15 PM MrHindsight: https://www.academia.edu/8322378/Influence_of_Resin_Content_and_Cast_Iron_Powder_Addition_on_Vibration_Characteristics_of_Granite_Epoxy_Composites
03:16 PM Rab: I'm not an expert on machine seismology, but I'd guess having those big bevels aimed into corners across the bed could have a beneficial damping effect (or at least interfere with any major resonance).
03:16 PM gloops: http://funakatown.com/images/T34-76-033.jpg
03:16 PM gloops: some inspiration
03:16 PM gloops: note - sloping armour
03:16 PM fragalot: the cables look way too tidy
03:17 PM JT-Shop: crap I just straightened a piece of 3/16 x 4 steel this morning and now I need that same arc on a piece]
03:18 PM fragalot: xD
03:19 PM fragalot: MrHindsight: I already read those, but haven't done any calculations other than say "alright, so 12.5% resin"
03:20 PM MrHindsight: www.mech.utah.edu/~me7960/lectures/Topic14-DesignOfMachineStructures.pdf
03:21 PM fragalot: difficult to calculate stiffness of an epoxy granite mix made from locally sourced materials
03:21 PM fragalot: I guess I could do a mini pour & put in the press to measure deflection
03:28 PM MrHindsight: trapped bubbles of air vs viscosity is probably the biggest problem with diy
03:28 PM fragalot: yeah
03:28 PM MrHindsight: the thicker the epoxy the more gets trapped
03:28 PM fragalot: there i'm considering 2 options, one of which I think will be the most realistic
03:28 PM MrHindsight: vacuum bag with a slow cure
03:29 PM fragalot: one is hang a weight off of a sacrificial motor
03:29 PM MrHindsight: you want enough catalyst to fully cure it but not so much that it cures too quickly
03:29 PM fragalot: yeah, I was going to ask an epoxy dealer for their slowest one
03:29 PM fragalot: I don't care if it takes a week to cure
03:29 PM fragalot: i'm not sure if a vacuum bag would really work
03:30 PM MrHindsight: cooling also slows curing
03:30 PM fragalot: the bag would collapse onto the epoxy wouldn't it
03:30 PM MrHindsight: polymerization is exothermic
03:30 PM fragalot: yeah but the cooling effect is limited to the outside
03:30 PM enleth: can epoxy be vibrated like concrete?
03:30 PM fragalot: can't cool the internal mass unless I cast in copper piping
03:31 PM fragalot: enleth: not as easily
03:31 PM MrHindsight: if it's low enough viscosity
03:31 PM MrHindsight: you can cool the epoxy components before mixing, this also raises viscosity
03:32 PM fragalot: I'll need a larger freezer to cool 50kg of epoxy, lol
03:32 PM MrHindsight: refrigerate the components before mixing
03:32 PM MrHindsight: thats ~50L
03:33 PM MrHindsight: whats the outdoor temp?
03:33 PM fragalot: will be around 18°C by the time I get around to doing this
03:33 PM MrHindsight: I have some epoxies that you can stand on when ~10C
03:33 PM fragalot: lol
03:34 PM fragalot: it's a tradeoff isn't it
03:35 PM MrHindsight: always
03:35 PM Loetmichel: fragalot: get a slower expoxy
03:36 PM fragalot: Loetmichel: obviously
03:36 PM Loetmichel: and dont worry about cooling anymore
03:36 PM MrHindsight: that paper with the metal tubes in the concrete covers turning the vibrations into heat
03:36 PM MrHindsight: this reduces the amount of concrete required as well
03:36 PM fragalot: so far in webshops i've only found "slow" epoxy where "slow" means 48min working time >.<
03:37 PM Loetmichel: seach again
03:37 PM Loetmichel: i have 24 hour expoxy here on my desk
03:37 PM Loetmichel: and thats not uncommon
03:37 PM fragalot: Loetmichel: I think it's more a case of "stop searching & "send out emails"
03:37 PM fragalot: Loetmichel: 24hr WORKING TIME, or 24hr hardening time
03:37 PM Loetmichel: the former
03:37 PM fragalot: manufacturer?
03:37 PM Loetmichel: 48 hour hardening time
03:38 PM Loetmichel: no idea
03:38 PM fragalot: :(
03:39 PM MrHindsight: http://www.nilsmalmgren.com/epoxy-chemistry/epoxy-plastics-general-chemical-and-physical-properties/
03:41 PM Loetmichel: fragalot: oh, i stand corrected. the 24/48 h are at 10°c
03:41 PM Loetmichel: at 20°C its 120 min/24h.
03:41 PM fragalot: most of the ones I've found only give a pot life of max 100 minutes
03:41 PM fragalot: yeah
03:41 PM Loetmichel: just read on the sellers webside
03:41 PM Loetmichel: https://www.bacuplast.de/epoxyd/epoxydgiessharz.html
03:42 PM fragalot: I could just buy a cooler
03:42 PM Loetmichel: EP241/EPH441
03:42 PM fragalot: put the epoxy tubs in & add ice
03:42 PM fragalot: then realize that it's too viscous
03:42 PM fragalot: put it in the microwave
03:42 PM fragalot: realize how much that stinks & ruins the epoxy
03:42 PM Loetmichel: fragalot: will you use it without filler?
03:42 PM fragalot: go cry.
03:42 PM fragalot: xD
03:42 PM fragalot: Loetmichel: epoxy-granite
03:42 PM Loetmichel: freeze the granite
03:43 PM Loetmichel: works well
03:43 PM Loetmichel: been there done that
03:43 PM fragalot: new plan
03:43 PM roycroft: move to the antarctic
03:43 PM roycroft: build mill
03:43 PM fragalot: ^
03:44 PM Loetmichel: that way you can still mix the epoxy at 20°C very well, then pour it int the bucket with the cold stone gravel and mix it in
03:44 PM Loetmichel: and it will take a long time to harden
03:45 PM fragalot: makes more sense too, from a thermal pov
03:45 PM Loetmichel: but stil be mixed well with the gravel
03:45 PM fragalot: even if I cool the epoxy, by the time it's mixed it's warm again
03:45 PM Loetmichel: true
03:45 PM fragalot: only question is; how do I efficiently cool 200kg of gravel
03:45 PM roycroft: move the gravel to the antarctic
03:46 PM Loetmichel: one sack at a time in the freezer
03:46 PM Loetmichel: or buy some crushed dry ice
03:46 PM MrHindsight: http://www.pslc.ws/macrog/epoxy.htm
03:46 PM fragalot: I have never found anywhere that sells dry ice here
03:46 PM Loetmichel: and mix it under before pourging in the epoxy
03:46 PM roycroft: most supermarkets sell dry ice
03:46 PM roycroft: at least around here
03:47 PM Loetmichel: fragalot: look at fish shipping shopw
03:47 PM Loetmichel: shops
03:47 PM fragalot: roycroft: I have not found any belgian shops that sell dry ice
03:48 PM roycroft: you probably won't find any shops in the antarctic that sell it either
03:48 PM roycroft: but it's not as important down there
03:48 PM fragalot: you'd be surprised
03:48 PM fragalot: I imagine them using it for quite a lot of experiments
03:48 PM roycroft: as opposed to just going outside?
03:48 PM gloops: get some pipe freezer
03:49 PM fragalot: so I found a webshop that sells it
03:49 PM fragalot: which means they'll ship it
03:49 PM fragalot: it will get sent to a pick-up station
03:49 PM fragalot: for me to pick it up the next day after they missed me
03:49 PM Loetmichel: not a problem
03:49 PM fragalot: and it'd be gone by the time i get there, lol
03:49 PM Loetmichel: they ship it in a foam box
03:49 PM Loetmichel: it should take weeks for it to disappear in there
03:49 PM fragalot: yeah they state the box lasts for a day
03:50 PM fragalot: "make sure to get it delivered on the day of use!"
03:50 PM Loetmichel: you may lose a few 10% per day, not more usually
03:50 PM gloops: the old houses used to have ice cellars
03:50 PM MrHindsight: heh so don't use USPS
03:50 PM gloops: no electricity, kept ice for a long time
03:50 PM fragalot: MrHindsight: USPS doesn't service us here so that's fine :-)
03:52 PM MrHindsight: they just sent my package to the wrong coast
03:52 PM fragalot: haha
03:52 PM fragalot: I've had less than ideal experiences with them as well
03:52 PM fragalot: that have costed me well over $600
03:52 PM MrHindsight: like France to Spain via Moscow
03:52 PM fragalot: MrHindsight: is there a big difference between low viscosity epoxy used for laminates & casting epoxies?
03:54 PM MrHindsight: fragalot: depends on what you need for either, I also have epoxies in water that are as thick as milk
03:56 PM fragalot: MrHindsight: I mean for my use
03:57 PM MrHindsight: casting resins are usually blended to cure the slowest
03:57 PM gloops: adding filler slows the cure
03:57 PM MrHindsight: not really, it's non reactive usually
03:57 PM gloops: but that stone wants to be bone dry, no moisture
03:59 PM MrHindsight: cost will also be a factor for you
03:59 PM MrHindsight: raw materials come in 200Kg drums
03:59 PM gloops: why dont you rethink this fragalot before its too late
03:59 PM gloops: half a tonne of epoxy!
03:59 PM MrHindsight: they have to repak in 20Kg pails
03:59 PM fragalot: most places appear to sell in 20kg packs
03:59 PM fragalot: prices vary from 150 to 300 eur
03:59 PM MrHindsight: thats not bad for 20Kg
04:00 PM fragalot: yeah I expected it to be more when I first started looking
04:01 PM Loetmichel: fragalot: if you want to make a gantry mill out of epoxy "concrete": dont foget to add a liberal amount of rebar to your mold
04:02 PM fragalot: Loetmichel: yup
04:02 PM Loetmichel: that stuff is nearly as brittle as real concrete
04:02 PM Loetmichel: on pulling forces
04:02 PM roycroft: try to avoid stuffing dead bodies in it though
04:02 PM gloops: why dont people use cement concrete?
04:02 PM roycroft: they will eventually rot and form voids
04:03 PM fragalot: gloops: turns to dust with vibration
04:03 PM Tom_L: for a while there it seemed like not many were building mills or routers etc but lately that's changed
04:03 PM fragalot: roycroft: not if you gamma ray blast 'm first to neutralize the bacteria & seal it properly so it can't dry out
04:03 PM MrHindsight: gloops: you can, it's generally full of acrylics when used for machines
04:04 PM roycroft: even so, you won't get the density you get with other filler material
04:04 PM gloops: how about polyester resin?
04:04 PM Tom_L: i think polyester is quite brittle isn't it?
04:05 PM MrHindsight: depends on the polyester
04:05 PM Loetmichel: gloops: because a) it dusts off sand and cement all the time. b) its prone to some distortion while drying c) its not that much cheaper than epoxy. d) its harder to make it load bearing AND light
04:05 PM MrHindsight: I have some polyesters that you can pull like taffy
04:05 PM gloops: different types for different applications, fibreglass is very strong, not so stuff though, with polyester resin
04:06 PM gloops: stiff
04:06 PM gloops: it would be stiff with granite chips
04:06 PM fragalot: alternative technique that is guaranteed to work: fill mold with hot granite, pour on hot runny epoxy until it's filled the voids, then activate the coolant lines you've got running through it
04:07 PM Loetmichel: fragalot: you can also use a co2 fire extinguisher to make your own "dry ice snow" for the granite filler to cool dwon
04:07 PM Loetmichel: its cheaper to buy crushed dry ice though
04:08 PM fragalot: yeah, just need to see if I can find somewhere I can go pick it up from on the weekend
04:08 PM roycroft: move next to volcano, wait for eruption, funnel molten magma into mill, let cool
04:08 PM fragalot: roycroft: that's porous
04:08 PM gloops: fake marble is polyester
04:08 PM Deejay: gn8
04:09 PM MrHindsight: plymer enhanced concrete does not act like Loetmichel mentions
04:09 PM fragalot: MrHindsight: https://www.ecfibreglasssupplies.co.uk/product/supacast-clear-epoxy-resin could this be a suitable candidate? (pot life of 8hrs at 22°C!)
04:09 PM gloops: even those cold cast bronze statues are, with bronze powder
04:09 PM gloops: no it doesnt, concrete is high tech now, look at some floor screeds theyre like rubber
04:10 PM roycroft: yeah, i guess you have to go way underground to get the non-porous stuff
04:10 PM Loetmichel: MrHindsight: gloops asked above why people doesent use normal cement concrete
04:10 PM Loetmichel: not polymer enhanced stuff
04:11 PM MrHindsight: fragalot: Mixture:
04:11 PM MrHindsight: Clear liquid, viscosity of 300 to 450 mPas. Mixing density: 1.1g./cc.
04:11 PM MrHindsight: that will pour easily, like a thin milk shake
04:11 PM gloops: https://www.engineeringforchange.org/news/the-concrete-lathe-world-war-i-technology-meets-21st-century-design/
04:12 PM MrHindsight: fragalot: that one looks good if the price is resonable
04:12 PM fragalot: price is on the higher side, but i'd rather buy a more expensive epoxy once, than have to buy 2 lots of cheaper stuff
04:13 PM MrHindsight: Elongation at break:
04:13 PM MrHindsight: 8%.
04:13 PM MrHindsight: Tensile strength: 66 MPa.
04:13 PM MrHindsight: Flexural strength: 105 MPa.
04:13 PM MrHindsight: has a little flex
04:14 PM fragalot: https://www.ecfibreglasssupplies.co.uk/product/axson-epolam-2017-epoxy-resin -- cheaper, but much shorter pot life, and as it's designed for lamination I have no idea how it will behave when cast
04:14 PM fragalot: barely harder than the other one though
04:16 PM gloops: polyester comes in slightly under tensile 63, modulus 78
04:17 PM gloops: 25% less stiff
04:18 PM MrHindsight: air pockets and not fully curing are your biggest enemies
04:18 PM fragalot: MrHindsight: that and not getting it cast or new batches mixed up in time
04:18 PM MrHindsight: so slowest cure and vacuum bagging
04:18 PM fragalot: MrHindsight: does a vacuum bag work for castings?
04:18 PM MrHindsight: yes
04:19 PM fragalot: interesting
04:19 PM gloops: also pouring, some gas escapes from a long thin stream when pouring
04:19 PM fragalot: gloops: can't pour an E/G mix in a fine stream
04:19 PM MrHindsight: gloops: but then when you mix in the aggregate you trap air again
04:19 PM fragalot: you can pour the epoxy in a fine line into the mixer, but you'll add air then anyway
04:20 PM fragalot: Supacast it is.
04:20 PM MrHindsight: <500mPas is pretty thin
04:20 PM fragalot: but for now. bed. :-) gnite all! & thanks for the help!
04:20 PM gloops: well you arent going to get rid of it in those volumes with some big vacuum gear
04:20 PM gloops: i wonder if vibrating might clear some
04:21 PM fragalot: vibrating helps, but bear in mind this is a 230kg mass we're talking about
04:21 PM MrHindsight: gloops: there's a several year long >1000 post thread on cnczone if you want to see all the different tries
04:22 PM gloops: i think it will be strong enough enough anyway
04:23 PM MrHindsight: fragalot: http://www.fillers.com/wp-content/uploads/2013/04/viscosity-chart.jpg
04:23 PM gloops: you know i bet you could have that cast in iron for less cost
04:23 PM fragalot: MrHindsight: I deal with viscosities daily at work, so I have a pretty good idea
04:23 PM fragalot: :)
04:24 PM fragalot: gloops: Deal. you find me somewhere that will cast this for me for that price
04:24 PM gloops: someone in here had parts cast, its wasnt so expensive
04:25 PM MrHindsight: andy had some steel cast
04:25 PM Rab: fragalot, are you casting in anchors, or drilling and epoxying them in after casting?
04:25 PM MrHindsight: he made the molds, they poured them for ~$100
04:25 PM fragalot: Rab: casting in cast iron plates where needed
04:26 PM Rab: fragalot, so you drill and tap the plates for mounting rails etc?
04:26 PM fragalot: Rab: scrape, drill, tap, yes.
04:26 PM Rab: clever
04:26 PM MrHindsight: if you have yo make multiple pours/casts, do them before the previous layers have cured
04:26 PM MrHindsight: yo/to
04:27 PM fragalot: yeah
04:27 PM fragalot: MrHindsight: the mold is the expensive part of casting iron, really
04:28 PM fragalot: and if I have to buy casting sand, and make the cores.. I might as well just continue down this road
04:29 PM fragalot: I do have a contact with a casting company that has a 3D sand printer, but I can guarantee that that is waaay more expensive :P
04:29 PM gloops: 200kg plain casting $262.60
04:29 PM gloops: but you have to collect from china haha
04:29 PM fragalot: I'll stick with the epoxy route :)
04:29 PM gloops: http://www.iron-foundry.com/cast-iron-price-calculator.html
04:31 PM gloops: well, ill just keep plodding on with my router
04:33 PM gloops: this construction did not happen as i expected, i thought it would be a quick fabrication, bolt on the parts and a spectacular first run
04:33 PM gloops: instead its dragged on and on, ill end up running some bits before others, waiting for bits, time ran out etc
04:33 PM gloops: bit of an anti-climax at the end
04:33 PM fragalot: you are nowhere nar the end, gloops so don't worry :-)
04:34 PM gloops: it will be running soon
04:34 PM fragalot: I'm off, gnite!
04:41 PM MrHindsight: when fragalot gets back http://bodgesoc.blogspot.com/2015/12/Holbrook3.html
04:42 PM gloops: ill just keep grinding away with grim determination, one day it will be working, i probably wont even notice
04:43 PM MrHindsight: gloops: when does the weather tend to be nicer there but before summer vacation time?
04:43 PM MrHindsight: late April early May?
04:43 PM gloops: it can be nice in May, difficult to say really
04:44 PM gloops: it can be nice in april, it can also snow in april
04:44 PM MrHindsight: I'd rather have rain than crowds
04:44 PM gloops: march winds, april showers
04:44 PM MrHindsight: May flowers?
04:45 PM gloops: yeah, you cant beat may really, i dont like it too warm
04:46 PM gloops: the first half of winter is good, just gets a bit monotonous
04:49 PM MrHindsight: been all over the pace here this winter, 60 then 6, then 50 then -7, the 40's then 10...
04:51 PM gloops: i guess its the lack of green that gets depressing, no birds singing, no flowers
04:51 PM gloops: anyway bedtime
07:01 PM Connor: I kinda screwed up on my RPM sensor.. I misunderstood how the back gear works.. I put the sensor on the 2nd pulley set. Works perfectly fine for Normal gear. and even works correctly (as in displays RPM) when in back gear.. only issue is, it's not the correct RPM. Don't know what I was thinking.
07:03 PM Connor: Was a easy mod. The only way to get direct speed from the spindle would be to tear the head completely down and use a sensor on the large gear from what I can tell.. Which would require modifying the lower casting. I was nervous enough drilling a hole in the top casting and adding the magnet to the pulley. That Required drilling a 6mm dia hole 3mm down.
07:03 PM Connor: I don't think the I un-balanced the pulley that much..
07:04 PM Connor: I'm looking at a way to set the RPM display to divide the reading by 8.3 which is the ratio. Should be more than good enough..
07:25 PM enleth: Connor: Bridgeport?
07:27 PM Connor: yea
07:28 PM enleth: 2J2 manual-like head, or rigid ram?
07:31 PM enleth: Connor: in any case, you can do it without cutting into the lower casting, especially if you only need speed readout without position
07:32 PM enleth: there is a sheet metal cover between the varispeed compartment and the backgear
07:32 PM Connor: Just a J-Head
07:33 PM enleth: step pulleys?
07:33 PM Connor: Yup.
07:34 PM enleth: http://industrialtoolandmachineworks.com/j%20head%20rebuild_files/image068.jpg does it look like that?
07:34 PM enleth: looks like the cover is cast instead of sheet metal
07:34 PM enleth: but it's still just a cover
07:35 PM Connor: I'm putting a microswitch on the clutch lever anyway to auto-reverse the FWD/REV switch.. I'm thinking of redoing the RPM with a Arduino Pro Mini and make my own RPM readout with a 8.3 divider when in backgear.
07:35 PM enleth: there's plenty of space around the dog clutch half-shaft or whatever that's called
07:35 PM enleth: makes sense too
07:36 PM enleth: just wanted to point out that there's one place that's safe to cut holes into just in case
07:36 PM Connor: I'm not touching the pulley. :)
07:36 PM Connor: I would have to use some sort of induction sensor on the teeth..
07:36 PM enleth: you'd have to actually cut into the lower casting if you wanted a full encoder, to put the hall sensor by the gear teeth
07:36 PM Connor: and that would be hard to install without clearance on the lower casting.
07:37 PM enleth: but you can just put the same sensor you're using now underneath that cover that's visible hanging on the spindle shaft in the photo
07:37 PM Connor: I'm just kicking myself.. I should have paid more attention..
07:37 PM enleth: and glue the magnet to the backgear
07:37 PM enleth: it should still register in down position
07:39 PM Connor: It's one of those longer tubular sensors..
07:39 PM enleth: besides, an automotive hall sensor is a very small device, you don't really need to cut into the lower casting to install it, so much as file a small flat on the inside circumference of the gear houding
07:39 PM enleth: ah, OK
07:39 PM enleth: there are automotive sensors that are flat
07:39 PM Connor: I can use any NPN sensor..
07:39 PM enleth: they're used in automatic transmissions
07:39 PM Connor: but.. I already have this thing installed..
07:39 PM enleth: directly on gear teeth
07:39 PM Wolf__: flat pcb ones are handy
07:40 PM Connor: The good thing is.. it works in both the up and down position! :)
07:40 PM enleth: using two out of phase gets you a quadrature encoder for rigi tapping too
07:40 PM enleth: *rigid
07:40 PM Connor: So, I got the clearance right between the pulley and the sensor..
07:40 PM Connor: Yea, this is staying manual.. Just wanted a VFD on it. and true RPM readout.
07:40 PM Wolf__: I need to add rpm meter to my mill
07:41 PM Wolf__: and reverse
07:42 PM Connor: I need to take some pictures of it.. Stupid timing belt broke... Had Bridgeport written on it.. I'm thinking it's OEM and the head is 50's or 60's
07:42 PM Wolf__: and brake
07:42 PM Connor: New one will be here Wednesday.
07:44 PM Connor: I could open up the VFD from 30-60hz to 0-90hz and get the same speed range.. but.. I didn't want to loose the torque at the lower RPM and I would have to add a external fan to the motor.
07:46 PM enleth: Connor: actually the fan might not be enough
07:46 PM Wolf__: lazy tach install on the lathe https://i.imgur.com/4H3K4ov.jpg
07:47 PM enleth: Connor: unless you adjust the U/f curve on the VFD properly (hard to say what's the proper curve for such an old motor), but that means you'll be losing even more torque
07:47 PM Connor: Yea. That's why I'm not doing it.
07:53 PM roycroft: speaking of that curve
07:53 PM roycroft: my new spindle seems to be fine
07:53 PM roycroft: i'm going to run it for a while longer before i feel gooda bout it
07:53 PM roycroft: but then i might want to tweak it a bit for best performance
07:53 PM roycroft: the application is a wood router
07:54 PM roycroft: and the maximum speed of the spindle is 24,000rpm, which is what an average wood router runs at
07:54 PM Tom_itx: https://www.youtube.com/watch?v=LUQIvIMC_e8
07:54 PM roycroft: i need to be able to slow it down when i'm using large diameter bits, such as panel raising bits
07:54 PM roycroft: probably to 15,000-18,000rpm
07:54 PM Tom_itx: https://www.youtube.com/watch?v=J6n2ZgY-5Ls
07:54 PM roycroft: it seems to me i'd want more torque at that lower speed than at the top speed
07:55 PM roycroft: or at least the same amount of torque
07:55 PM enleth: I'm actually wondering whether there are any machines that use more than one spindle motor for separate speed ranges
07:55 PM roycroft: am i thinking correctly about that?
07:55 PM roycroft: it will be working harder at the lower speed
07:56 PM enleth: no idea here, I have a mill that topped out at 3500rpm and is probably going to do up to 6000 or so when I'm done modding it
07:56 PM roycroft: enleth: i've seen a number of cnc milling machines that have an auxiliary spindle for engraving and such
07:57 PM enleth: ah, that makes sense
07:57 PM roycroft: yes
07:57 PM roycroft: the main spindle runs up to 2500rpm or whatever
07:57 PM roycroft: and then there's a 20krpm spindle for tiny stuff
07:57 PM roycroft: i don't know that any are manufactured that way
07:57 PM enleth: no point running the regular spindle fast for engraving
07:57 PM roycroft: but folks certainly make that mod
07:58 PM enleth: actually I might have seen a bridgeport accessory that adds a pneumatic spindle
07:58 PM roycroft: when the regular spindle is huge, the cost of replacing the bearings with high speed ones is likely greater than the cost of the second spindle
07:58 PM enleth: it clamps onto the quill, which is why it's well suited for use on a BP
07:58 PM roycroft: yeah, that's what i've seen
07:59 PM roycroft: clamped on the quill of a bridgeport-style mill
07:59 PM enleth: limits Z travel, but it's not like you need it much for engraving
07:59 PM roycroft: i think i'll keep the default torque curve for now and see how things go
08:00 PM roycroft: i don't do much panel raising, and when i do i have a couple vertical panel raising bits that can run at full speed
08:00 PM roycroft: i'm going to all this trouble to get a variable speed spindle and i'll hardly ever vary the speed
08:00 PM roycroft: but when i need to it will be good to know that i can
08:02 PM Tom_itx: i can see this sherline motor isn't gonna cut it on this new mill
08:02 PM Tom_itx: but it's doing a job for now
08:04 PM Connor: Tom_itx: I like the encoder setup for the spindle.. Nice.
08:05 PM Connor: I'm using a 1.5 HP Treadmill motor on my G0704.. It works really nice.. can get it up to around 6krpm
08:05 PM Tom_itx: thanks
08:05 PM Tom_itx: what are you using to drive it?
08:25 PM Connor: Tom_ITX looking for the driver.. one sec.
08:27 PM Connor: Tom_itx: KBCC-125R
08:27 PM Connor: https://www.ebay.com/itm/KB-Electronics-KBCC-125R-variable-speed-DC-motor-control-16Amp/142669644115?hash=item2137c60153:g:7RoAAOSwSVJaa5y6
08:27 PM Connor: https://www.kbelectronics.com/Variable_Speed_DC_Drives/DC_Drives_Chassis.html
08:40 PM Tom_itx: yeah that's what sherline uses
08:40 PM Tom_itx: one of them anyway
08:42 PM pink_vampire: if i put a step/dir controller as my spindle, linux cnc can use it with spindle commands? as well as G commands
08:44 PM gregcnc_: it can be done. search for references to C axis for lathes.
08:46 PM pink_vampire: is that fake ?? https://www.ebay.com/itm/SCHNEIDER-ELECTRIC-LC1D09-contactor-3-pole-110VAC-coil/142242682265?epid=1501665135&hash=item211e531599:g:fBIAAOSwOtdYT1D1
08:47 PM pink_vampire: gregcnc_: thanks, i will!
08:47 PM Tom_itx: it's just a relay
08:47 PM Tom_itx: made in china
08:49 PM Connor: What's the main diff between a relay and a contactor. ?
08:50 PM Tom_itx: nothing that i know of
08:50 PM Connor: I'm wishing I put in a contactor on the input side of the VFD and tied it to the E-Stop vs using the VFD E-Stop command.
08:50 PM Tom_itx: maybe there are 2 contacts per leg so a full open occurs, i don't know
08:51 PM Tom_itx: i got a huge one for my air compressor used for next to nothing
08:51 PM Tom_itx: i think it was for 3phase
08:51 PM Tom_itx: but i'm just using 2 legs
08:51 PM Tom_itx: heh, it's never failed
08:51 PM Wolf__: I need to get a couple to add reverse to my mill...
08:52 PM Tom_itx: use one dbdt
08:52 PM Tom_itx: or you'll be sorry
08:52 PM Tom_itx: DPDT
08:52 PM Tom_itx: sry
08:52 PM Tom_itx: what happens when one relay sticks?
08:52 PM Tom_itx: and you hit reverse
08:52 PM Tom_itx: and
08:52 PM Wolf__: bad things ™
08:53 PM Tom_itx: i put a delay between switching time so it would switch at near zero current
08:53 PM Wolf__: I was going to do one for phase swap and 2nd for power
08:53 PM Tom_itx: how big?
08:53 PM Wolf__: right now the machine just has a low/off/high drum switch
08:54 PM Wolf__: 1hp I think
08:54 PM MrHindsight: Connor: contactors are associated with high voltages but perform just like a relay
08:55 PM Wolf__: has a odd data plate, 1 1/2 but I’m not sure if thats listing the high/low
08:55 PM Connor: Yea. I know that. I was just wondering what else made the different. I.E. dual break contacts.. What ever makes them more resistant to contact welding..
08:55 PM MrHindsight: contactors are most often normally open
08:55 PM Tom_itx: https://mesaus.com/index.php?route=product/product&path=74_77&product_id=136
08:55 PM Tom_itx: Wolf__
08:55 PM Tom_itx: jt has those
08:55 PM Tom_itx: if it's big enough
08:56 PM Tom_itx: err he has a 110v one too
08:56 PM Tom_itx: https://mesaus.com/index.php?route=product/product&path=74_77&product_id=130
08:56 PM Tom_itx: that may not be big enough for you
08:57 PM Wolf__: might be, its a 220 3phase machine
08:57 PM Tom_itx: i'm using one on my spindle
08:58 PM pink_vampire: it's says "SCHNEIDER ELECTRIC" but the location is china..
08:58 PM Tom_itx: uh huh
09:05 PM Wolf__: 1/3 the price of usa supplier, might be clone
09:05 PM Wolf__: probably still a contactor tho
09:06 PM pink_vampire: i need it for the power hacksaw
09:07 PM Wolf__: how would I do a forward/rev with one contactor…
09:07 PM Connor: It would have to be a DPDT contactor.
09:07 PM Tom_itx: yeah that's what i did
09:07 PM Tom_itx: center to the motor
09:08 PM Tom_itx: X the input sets
09:08 PM Connor: Same way a drum switch does..
09:08 PM roycroft: make sure it's a break before make contactor :)
09:12 PM Connor: WooT.. Finally got the VFD manual in PDF format!!
09:25 PM roycroft: what vfd?
09:44 PM Connor: roycroft: SoyanPower SVD-P
09:45 PM roycroft: oh, i'm not familiar with that one
09:45 PM roycroft: but i'm not a vfd expert
09:46 PM Connor: I'm not either..