#linuxcnc Logs

Mar 15 2018

01:21 AM fragalot: hi
01:24 AM CaptHindsight: Howdy partner!
02:10 AM Deejay: moin
02:10 AM CaptHindsight: hasta
03:24 AM gloops: well the router is giving up the fight now, few switches to connect, couple of pulley adaptors to turn, 1 stiff ballscrew to look at, then testing, started at xmas, say 3 months building, not too bad really
03:34 AM pink_vampire: 1490.24mm/min for steel is ok?
04:16 AM pink_vampire: any life here???
04:39 AM XXCoder: pink_vampire: hey
04:39 AM pink_vampire: hii XXCoder!!
04:39 AM XXCoder: hows things
04:41 AM pink_vampire: i'm trying to make 3m machining tool path
04:42 AM pink_vampire: XXCoder: what feedrate are you using for 1/8" endmill in steel?
04:43 AM XXCoder: sadly dunno lol I use programs made by someone else
04:43 AM XXCoder: and im still iffy on feed rate and ipm
04:43 AM pink_vampire: how about 1500mm/min?
04:43 AM pink_vampire: 60ipm
04:43 AM pink_vampire: XXCoder: ^
04:43 AM XXCoder: no idea
04:46 AM XXCoder: isnt there calculators out there
04:53 AM jthornton: morning
04:54 AM XXCoder: yo
04:54 AM XXCoder: maybe you can answer her question
04:56 AM jthornton: how many cutting edges?
04:56 AM jthornton: http://www.custompartnet.com/calculator/milling-speed-and-feed
04:57 AM pink_vampire: 4
04:58 AM pink_vampire: 1/8" diameter
04:58 AM pink_vampire: mild steel
04:58 AM pink_vampire: jthornton:
04:58 AM jthornton: carbide or HSS
04:58 AM pink_vampire: carbide
05:00 AM jthornton: http://www.lakeshorecarbide.com/pdf/GENERAL%20PURPOSE%20EM%20SPECS.pdf
05:01 AM jthornton: 6000 rpm 19 IPM
05:12 AM jthornton: 5 more days till the summer equinox
05:37 AM Tom_L: morning
05:38 AM jthornton: morning
05:38 AM Tom_L: pink_vampire at 60ipm you're not gonna be cutting long in steel wiht an 1/8" cutter
05:40 AM jthornton: that would be ok at 22,000 rpm with a really good end mill
05:40 AM Tom_L: carbide will probably snap off
05:42 AM jthornton: http://www.lakeshorecarbide.com/pdf/HIGH_FEEDMILL.pdf
05:44 AM jthornton: with those you could slot at 300IPM with an 1/8" endmill
05:57 AM Tom_L: no 1/8" there that i see
05:57 AM jthornton: yea some odd sizes
05:58 AM Tom_L: i think i get too much deflection on my machine to cut steel very well
05:58 AM Tom_L: i have to slow it way down
05:59 AM pink_vampire: i'm with 0.2mm deflection ion my Z
05:59 AM Tom_L: i wouldn't even attempt it on the sherline though
05:59 AM jthornton: a super rigid machine is needed for high speed milling
05:59 AM Tom_L: i know
05:59 AM Tom_L: i watched a mori taking a 1/4" cut with a 3" shell mill like it was buttering toast
06:00 AM Tom_L: chips coming off white hot
06:00 AM pink_vampire: Tom_L: you need to use small chip load
06:00 AM Tom_L: sticking to the paint on the enclosure :D
06:01 AM Tom_L: pink_vampire, i know. i was cutting on mine around .0006ipt
06:01 AM pink_vampire: i want to tig weld
06:02 AM Tom_L: finding what your machine can do is a process like anything else
06:03 AM Tom_L: i think tig would be fun but i don't have much around here i need it for
06:03 AM pink_vampire: i want to weld 22 gauge steel
06:03 AM Tom_L: you can mig that
06:04 AM pink_vampire: mig 22?
06:04 AM pink_vampire: how??
06:04 AM Tom_L: backer plate and the right settings
06:05 AM jthornton: my brother used to tig beer cans together when they were made from steel
06:05 AM Tom_L: i dunno what gage it was but i made that belt cover with mig
06:06 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Belt_Guard/Belt_Guard3.jpg
06:06 AM pink_vampire: nice cover!
06:07 AM pink_vampire: nice rails!
06:07 AM pink_vampire: where did you got the hiwin rails??
06:07 AM Tom_L: ebay
06:07 AM pink_vampire: what grade?
06:07 AM Tom_L: cheap
06:08 AM XXCoder: Tom_L: did you tow the belt cover behind your truck? lol
06:08 AM Tom_L: yes
06:08 AM XXCoder: nice though
06:08 AM Tom_L: i had 36grit on the sander... didn't feel like changing it
06:08 AM pink_vampire: 36grit!! WTF!!
06:09 AM Tom_L: from removing all the paint n rust on the tubes i got from the scrap yard
06:09 AM Tom_L: pink_vampire, no time to mess around...
06:09 AM XXCoder: cool :)
06:09 AM pink_vampire: sandblast
06:09 AM XXCoder: get black 2.0 and make it super black lol
06:09 AM Tom_L: not available
06:09 AM XXCoder: after sandblast and printer of course
06:10 AM pink_vampire: get it!
06:10 AM XXCoder: or rock tumble
06:10 AM pink_vampire: make one!
06:10 AM pink_vampire: soo easy
06:10 AM pink_vampire: I LOVE it
06:10 AM pink_vampire: the powder coat
06:10 AM pink_vampire: and you have amazing part
06:11 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Paint/Paint3.jpg
06:11 AM Tom_L: you'd never know it
06:11 AM XXCoder: nopooo black2.0 it ;)
06:12 AM XXCoder: nice though!
06:12 AM pink_vampire: what paint is that??
06:12 AM pink_vampire: look super smooth
06:12 AM Tom_L: cheap enamel from hd
06:13 AM pink_vampire: how did you apply it?
06:13 AM Tom_L: brush
06:15 AM pink_vampire: look amazing!
06:24 AM -!- #linuxcnc mode set to +v by ChanServ
06:28 AM pink_vampire: firephoto: ?
06:30 AM dan3wik is now known as dan2wik
06:30 AM {HD}_ is now known as {HD}
06:39 AM pink_vampire: how much a radiator cost?
06:39 AM Loetmichel: radiator for what?
06:43 AM pink_vampire: my spindle
06:44 AM pink_vampire: water cooled spindle
07:14 AM methods_: https://projectacrn.org
07:14 AM methods_: rtos hypervisor
07:14 AM methods_: that looks pretty cool
07:17 AM methods_: https://projectacrn.github.io/introduction/index.html
07:21 AM pink_vampire: someone can help me with radiator for my spindle?
07:21 AM pink_vampire: Loetmichel: ?
07:22 AM pink_vampire: ho much water do i need fo it?
07:22 AM pink_vampire: how *for*
07:30 AM gloops: https://www.wsj.com/articles/german-engineering-yields-new-warship-that-isnt-fit-for-sea-1515753000?nan_pid=1863534475&ad_id=7743450
07:31 AM pink_vampire: gloops: can you help me with radiator?
07:32 AM gloops: pink_vampire probably not - but whats wrong?
07:33 AM pink_vampire: i need to get one for my spindle
07:33 AM gloops: ahh, no ive not used water cooled
07:34 AM gloops: plus i would probably go for an improvised thing lol
07:38 AM slipalong: Guy's Im just looking add spindle control to my system by driving the DC motor controller with the 0-10V output form my BOB.
07:38 AM slipalong: I will also need speed displayed on Gmoccapy
07:38 AM gloops: use relay for spindle on/off pwm for rpm
07:39 AM pink_vampire: slipalong: let me know how you did it
07:39 AM gloops: anyway back to work
07:40 AM slipalong: yes thats seems ok, other that the controller voltage input on the stock G0704 motor controller is floating at 100V!
07:40 AM slipalong: My BOB is isolated though so I think its ok
07:40 AM pink_vampire: slipalong: do you have the G0704?
07:41 AM slipalong: Its actually a AMA25LV which is a UK version
07:41 AM slipalong: I say G0704 as it less confusing
07:42 AM pink_vampire: I have the G0704
07:42 AM slipalong: have you done spindle control yet?
07:42 AM pink_vampire: no, it is fixed on 1000rpm
07:43 AM pink_vampire: but you can use digital pot
07:43 AM slipalong: Yes thats what Ive been doing, but Im trying to get rid of the box on the side of the head
07:44 AM slipalong: have it all controlled via LCNC
07:44 AM slipalong: Im intending to do closed loop speed control
07:44 AM pink_vampire: i don't see why you need to play with the rpm
07:44 AM slipalong: so feeding back the real RPM into the BOB
07:45 AM slipalong: different tools need different RPMs
07:45 AM pink_vampire: you can change the feed..
07:45 AM slipalong: Next phase is to make a ATC
07:46 AM pink_vampire: waste of time for a hobby machine
07:46 AM slipalong: so I can leave it working unattened
07:46 AM pink_vampire: hope for you it's a joke
07:47 AM slipalong: you may be right. But I haven't got �16,000 for the hobby professional machines
07:48 AM pink_vampire: 16K rpm is your stock spindle speed???
07:48 AM slipalong: I wish
07:49 AM pink_vampire: so what kinda spindle is that?
07:49 AM slipalong: I meant that is what a Tormach costs.
07:49 AM pink_vampire: the g0704 is better then the 440
07:52 AM slipalong: do you thing so? Ive never seem one in real life
07:52 AM pink_vampire: i saw
07:52 AM pink_vampire: and it is much smaller on the X axis
07:53 AM pink_vampire: 17" on the g0704, and just 10" on the 440
07:53 AM slipalong: The look a bit more chunky cast iron. The Z axis flexes a lot on mine if I try to use end mills bigger that 10mm I get lots of chatter
07:53 AM slipalong: The Y axis is the main problem on my mill
07:54 AM pink_vampire: the y?
07:54 AM slipalong: + and - 65 mm is rubish
07:54 AM pink_vampire: do you have whatsapp?
07:55 AM slipalong: Ive got instagrm
07:55 AM pink_vampire: I mean so we can talk..
07:56 AM slipalong: I can probably install it.
07:56 AM pink_vampire: https://i.imgur.com/Z0a5grd.png
07:56 AM pink_vampire: this is on my machine
07:56 AM pink_vampire: 3/4
07:56 AM pink_vampire: 3/4" endmill
07:58 AM gregcnc_: what kind of spindle did you get?
07:58 AM pink_vampire: water cooled one
07:58 AM slipalong: I make knives so I cut steel mainly.
07:58 AM gregcnc_: specifically
07:59 AM pink_vampire: very fast
07:59 AM pink_vampire: no idea
07:59 AM slipalong: I have a MT3 spindle with a 600W motor
07:59 AM gregcnc_: no name?
07:59 AM slipalong: Its the stock spindle
07:59 AM pink_vampire: no
08:00 AM gregcnc_: pink_vampire in that case a fish tank with a pump will do
08:00 AM pink_vampire: let me see
08:00 AM pink_vampire: 60K
08:01 AM gregcnc_: W?
08:01 AM pink_vampire: water cooled
08:01 AM pink_vampire: rpm
08:01 AM gregcnc_: Ok i guessed you were running 60kW from your 110v outlet in the bedroom
08:01 AM gregcnc_: weren't
08:02 AM pink_vampire: it is connected instead on the range
08:02 AM gregcnc_: now we're cooking
08:02 AM pink_vampire: i hope not
08:03 AM gregcnc_: so the spindle didn't come with cooling specs and we have no idea about rated wattage
08:03 AM pink_vampire: so i need to cool the water
08:03 AM pink_vampire: 2HP
08:03 AM slipalong: those chinese water cooled spindles are usually 1.5Kw and 18000 rpm
08:03 AM gregcnc_: cold water from kitchen sink -> spindle -> back to kitchen drain
08:04 AM slipalong: the 4 Kw is 10 or 12K rpm and its physically biger
08:04 AM slipalong: yes al old fish tank and pump would be ideal
08:04 AM gregcnc_: depends on real cooling load
08:05 AM slipalong: you can usually pick then up really cheap second hand
08:05 AM pink_vampire: i want to use a radiator
08:05 AM gregcnc_: you'll have to do some math
08:05 AM gregcnc_: and have to have real specs for the radiator
08:05 AM gregcnc_: and preferably the spindle itself
08:06 AM pink_vampire: just to get a car to motorcycle radiator, and a fan and some water with antifreeze
08:07 AM gregcnc_: if the radiator is oversized it won't matter
08:07 AM gregcnc_: but it will still need a fan
08:07 AM pink_vampire: what do you mean by over size?
08:07 AM slipalong: Go to a motorcycle breakers and you should be able to get a rad with a fan already mounted
08:09 AM gregcnc_: use a raditor and fan from a 13L diesel, it will keep the spidnle cool for certain
08:11 AM gregcnc_: pink_vampire spindle speed feedback is too much for hobby machine, but a bucket of water is too simple for spindle cooling?
08:12 AM pink_vampire: yes..
08:13 AM gregcnc_: I use a chiller for my spindle, mucho better
08:13 AM pink_vampire: what kind?
08:14 AM gregcnc_: https://www.ebay.com/itm/183126954964
08:15 AM pink_vampire: OVER kill
08:16 AM gregcnc_: 19°C all day long
08:16 AM pink_vampire: i need it below 0
08:19 AM gregcnc_: CO2 tank
08:19 AM pink_vampire: LOL
08:21 AM gregcnc_: I think Loetmichel used a 5 gallon bucket for his spindle and ran a fairly long time
08:22 AM pink_vampire: i want it close
08:22 AM gregcnc_: with a lid on it
08:25 AM pink_vampire: is there a better option for the coolant?
08:28 AM gregcnc_: why
08:29 AM slipalong: Just some Car antifreeze
08:29 AM pink_vampire: i'm trying to avoid corrosion
08:30 AM slipalong: Anyone know what the maximum frequency you can count on a parallel port?
08:30 AM pink_vampire: i think 2.5MB
08:31 AM pink_vampire: but not on real time
08:31 AM gregcnc_: better get the good stuff https://shop.fischerspindle.com/epages/fp.sf/en_US/?ObjectPath=/Shops/fp/Products/107657
08:31 AM slipalong: The tacho on my spindle has 20 ppr so at 3000 rpm thats 60 Khz isn't it?
08:33 AM slipalong: dose the coolant come into contact with the armature or are there cooling ways separate?
08:33 AM gregcnc_: not 60kHz
08:34 AM pink_vampire: https://shop.fischerspindle.com/WebRoot/Store/Shops/fp/4FED/A1F8/A12B/4024/767B/B2FA/1909/8538/MSDS_COOL-X_EN_1.pdf
08:34 AM pink_vampire: do you think it is safe to use it in at home?
08:34 AM slipalong: what my math is wrong or it cant could such high frequencies with a simple parallel port?
08:35 AM gregcnc_: 3000rpMINUTE/60
08:36 AM slipalong: its 3000 * 20 so 20 pulses per revolution
08:36 AM pink_vampire: 50pps
08:36 AM slipalong: ah yes
08:36 AM slipalong: got ya
08:37 AM slipalong: should manage that I htink
08:37 AM pink_vampire: are you using servo or steppers?
08:37 AM gregcnc_: pink don't mix it with your whiskey
08:37 AM slipalong: The spindle motor is just a DC motor nothing fancy
08:40 AM slipalong: was thinking of a water cooled spindle motor with 4:1 reduction when the stock motor dies
08:41 AM gregcnc_: why use reduction?
08:42 AM slipalong: I dont supposed the torque is that high on the cheap china ebay jobs
08:43 AM gregcnc_: search for appropriate speed instead, servo motor like this setup https://www.youtube.com/watch?v=oaeQ5BWTyXk
08:43 AM slipalong: running a fly cutter or 50mm face mill ant 500 rmp
08:43 AM slipalong: I want 6000 rpm
08:44 AM gregcnc_: just find the right RPM motor
08:44 AM slipalong: I already have 2500 ish
08:44 AM gregcnc_: all kinds of stuff out there
08:45 AM slipalong: you in the UK?
08:45 AM gregcnc_: US
08:45 AM pink_vampire: us
08:46 AM slipalong: Ive are the poor relations! If you look at eBay UK only real option air the 1.5 3.3 and 4 KW chineese VFD's
08:46 AM gregcnc_: Ebay used
08:46 AM gregcnc_: new will be costly
08:46 AM gregcnc_: industrial surplus
08:47 AM slipalong: I can see used industrial stuff for 900+ GBP but them I would need a VFD and that are big and heavy for my crappy little G0704 clone
08:48 AM slipalong: I can get a 4Kw motor with VFD from germany for <500
08:49 AM slipalong: Thats 12000 rpm so 2:1 reduction gives me my 6000
08:49 AM slipalong: I can take the armature out and cut off the collet
08:49 AM slipalong: Thats my plan unless I get a better suggestion
08:50 AM pink_vampire: 6000 rpm is nice
08:50 AM gregcnc_: and how heavy is a 4Kw spindle?
08:50 AM pink_vampire: now you have the 50-2000 rpm?
08:50 AM slipalong: Servos are nice as you can do nice controlled low speed forward and revers or thread cutting
08:51 AM slipalong: 6Kg I think
08:51 AM pink_vampire: you mean spindle / C axis
08:51 AM slipalong: yep
08:51 AM pink_vampire: i want to do that to my stock spindle
08:52 AM pink_vampire: do you have whatsapp?
08:52 AM slipalong: You can do it with the stock AC motor and a servo controller
08:52 AM pink_vampire: i know
08:53 AM slipalong: Hoss has a video, but I just want to chew through knife steel with a ball mill and flood coolant
08:53 AM pink_vampire: but it has ton of backlash on the gears
08:53 AM slipalong: Any tapping I do by hand
08:54 AM gregcnc_: watching the mill tap is magic
08:54 AM pink_vampire: you can make a tapping head
08:54 AM slipalong: backlash comp on Linux CNC works great. I had 0.3MM on my old x axis bearings
08:54 AM pink_vampire: just move to belt drive
08:54 AM pink_vampire: much much quite
08:55 AM pink_vampire: the 440 is belt drive
08:56 AM slipalong: I have a power drawbar so its load of work to move to belts. My mill is quite old and has all steel gears
08:56 AM slipalong: If I actually start making money I will upgrade to a Tormach 1100.
08:57 AM pink_vampire: cool
08:57 AM slipalong: Making knives in the UK is almost as bad as making chrystal meth!
08:58 AM pink_vampire: why??
08:58 AM gregcnc_: you're on instagram?
08:58 AM TurBoss: is hazzy-dev arround?
08:58 AM TurBoss: hello all
08:58 AM slipalong: You cant carry a locking knife in the UK
08:58 AM slipalong: or a fixed blabe
08:59 AM slipalong: you can probably get away with a swiss army knife
08:59 AM slipalong: Its a joke
08:59 AM gregcnc_: is there demand?
08:59 AM hazzy-dev: Hey TurBoss!
09:00 AM slipalong: probably not as I won't make anything good enough :-(
09:00 AM hazzy-dev: I saw your commits on the streamer! Hurray!
09:00 AM slipalong: you can still buy and sell but cant cary in public
09:00 AM TurBoss: hell
09:00 AM TurBoss: hello
09:01 AM TurBoss: have you seen the last commits?
09:01 AM hazzy-dev: TurBoss: Yes, thank you!
09:01 AM hazzy-dev: I have not tryed them yet
09:01 AM slipalong: going to try 50Hz signal into my BOB and see if the RPM's on LCnC work
09:02 AM TurBoss: has to be polished but its functional
09:03 AM hazzy-dev: Of course, but polishing it easy once it works!
09:03 AM hazzy-dev: I need to get more RAM for this new dev machine, it is VERY slow :(
09:04 AM hazzy-dev: 50% in swap
09:04 AM TurBoss: new machine?
09:04 AM TurBoss: ohhh
09:04 AM TurBoss: cool
09:05 AM TurBoss: can you read #hazzy?
09:46 AM Beachbumpete1: Morning Folks ;)
10:41 AM IchGucksLive: hi all
10:58 AM gregcnc_: I guess Brother machines run linux
11:04 AM hazzy-dev: gregcnc: Yes, they do. If I ever win the lottery (which is unlikely since I don't play :) I will get a Brother Speedio S500X1, they are awesome machines!
11:05 AM gregcnc_: yeah would be nice
11:08 AM hazzy-dev: Nice thing is that brother does not do all that "you have to pay extra to have G03 enabled" crap, most everything on thier controls is standard, and they are very full featured.
11:47 AM Loetmichel: gregcnc_: not even a 5 gallon bucket
11:47 AM Loetmichel: 5 liters
11:47 AM Loetmichel: and its suifficient for infinite hours
11:48 AM Loetmichel: the 800W spindle produces less heat than the bucket can dissipate thru the walls
12:12 PM gloops: hehe my rnli lifeboat works, daft woman selling it for £5
12:25 PM roycroft: i missed the earlier part of the cooling conversation, so i may be way off base, but i'll throw it out that i use this with a 2.2kw spindle and it works brilliantly - the spindle does not even get warm: https://www.ebay.com/itm/232383121796
12:25 PM roycroft: it's cheap and small
12:25 PM roycroft: i run it off 240vac, because that's the power feed i have to my router table
12:26 PM roycroft: i'm thinking of getting another one for my 7x12 band saw
12:26 PM roycroft: the saw did not come with a coolant pump, although there's wiring and a switch for it
12:27 PM roycroft: and lubing the blade up with a candle isn't the best way ot dealing with the issue
12:27 PM roycroft: of
12:27 PM Loetmichel: roycroft: i was even cheaper....
12:28 PM roycroft: lowest cost is not always the prime factor in making a purchase decision
12:28 PM roycroft: whatever you discussed may work fine
12:29 PM roycroft: i'm just showing an alternative
12:29 PM Loetmichel: i meant i went the cheapest route possibel and it still works
12:29 PM roycroft: sure
12:29 PM roycroft: i get that
12:30 PM Loetmichel: https://www.youtube.com/watch?v=a9Ov69t0uwo
12:31 PM Loetmichel: point that i wanted to make earlier is that you dont NEED a radiator for these small spindles. most of the time the coolant reservoir is enough to dissipate the spindle heat
12:32 PM roycroft: right - i agree with you there completely
12:32 PM roycroft: and i'd say also that for a small mill with one of those high speed spindles what you did is fine
12:32 PM Beachbumpete1_: Captainhindsight hey man ya there?
12:32 PM roycroft: my reservoir is bigger than that
12:32 PM roycroft: but you could easily use a larger one
12:32 PM gloops: id probably use a petrol pump - car heaters rad
12:33 PM gloops: or washing machine pump, all free/pennies
12:33 PM roycroft: one of the things that's nice about the setup i got, considering the band saw use, is that the return line goes into a coarse filter first, to get rid of big chunks
12:33 PM roycroft: and then the reservoir is two chambers, so that the small bits of swarf get a chance to settle down in the first chamber, and only the coolant will flow into the pump chamber
12:34 PM roycroft: i also did not have to mess around with a power source at all
12:34 PM roycroft: i just wired the motor for 240vac and hooked it into the mains coming into the machine
12:34 PM roycroft: to me those kinds of features help justify the cost
12:35 PM roycroft: and to me that still was dirt cheap
12:35 PM roycroft: considering all i had to do was take it out of the box, fill it with water, and plug it in
12:35 PM roycroft: i probably have $50 worth of plumbing into the thing though
12:36 PM roycroft: i have quick-disconnects on the pump and coolant tank, on both sides of the dust chamber wall inside my router table, and on the spindle itself
12:36 PM roycroft: so that i can quickly remove the spindle, and quickly remove the coolant system
12:37 PM roycroft: but that's all ease of use stuff that is not necessary if one is on a tight budget
12:38 PM * roycroft needs to start taking some pictures of his setup, now that he's doing the final build of it
12:42 PM fragalot: hi
12:43 PM phipli: evening
01:00 PM gloops: hello
01:03 PM miss0r: fragalot you around?
01:08 PM phipli: JT-Shop, jthornton, https://www.cnx-software.com/2018/03/14/35-raspberry-pi-3-model-b-launched-with-a-faster-processor-802-11ac-wifi-gigabit-ethernet-and-optional-poe/
01:20 PM fragalot: miss0r: hi
01:21 PM miss0r: hey
01:21 PM miss0r: I sent you some info PM
01:31 PM gregcnc_: shiiite https://youtu.be/6b3Yny5V7lk
01:33 PM Tom_L: what's up?
01:34 PM Tom_L: that longhair should know better too
01:35 PM gloops: would have come keen accross the back of the head
01:35 PM phipli: Perhaps he was only there on work experience
01:36 PM Tom_L: or lack of
01:36 PM Tom_L: i ran 6 & 8 spindle with 12' bars in tubes
01:37 PM phipli: The guy that walks up helpfully points towards the door
01:37 PM Tom_L: sometimes they would really rattle but at least the tubes contained them
01:37 PM phipli: "if you start running before the director gets here..."
01:40 PM Tom_L: osha would have loved that
01:41 PM phipli: did it knacker the brake?
01:42 PM Tom_L: he shut all power to it
01:42 PM Tom_L: not just the estop
01:42 PM sync: I love how slow he is on the estop
01:43 PM phipli: The estop is probably mounted one panel further back now
01:44 PM gloops: machine also doesnt seem bolted down, could have tipped over on him
01:44 PM gregcnc_: tipped over?
01:44 PM Tom_L: sometimes they're just leaded in place
01:44 PM gloops: gregcnc yeah if that bar had got stuck on something
01:44 PM Tom_L: i doubt it would have tipped over but it will need some service
01:45 PM Tom_L: the bar would twist off first
01:45 PM gloops: unlikely it would happen granted
01:49 PM Tom_L: https://www.youtube.com/watch?v=6xAWwr6Eh24
01:49 PM Tom_L: you can see it coming but at 4:45ish...
01:50 PM Tom_L: they don't try to stop the spindle at first either
01:53 PM gregcnc_: how tight did the chuck have to be for some polishing?
01:53 PM gloops: saw that before yeah
02:15 PM gloops: bridge collapse in Florida
02:18 PM gloops: https://www.mirror.co.uk/news/us-news/miami-bridge-collapse-fiu-university-12195689
03:07 PM gloops: how does a new bridge collapse in a western nation these days
03:10 PM SpeedEvil: At somewhere under 9.8m/s^2 typically.
03:12 PM XXCoder: probably with loud noises also
03:13 PM gloops: we know how to make bridges
03:19 PM Wolf__: knowing how vs actually building it correct 2 diff things
03:19 PM gloops: true, but there are buildings inspectors in Florida im sure, plans have to be submitted and scrutinised etc
03:23 PM Wolf__: https://media.local10.com/photo/2018/03/10/Florida%20International%20University%27s%20pedestrian%20bridge%20swings%20into%20place20180310231804.jpg_11774506_ver1.0.jpg
03:23 PM Wolf__: interesting design
03:24 PM XXCoder: that looks like walking bridge
03:24 PM Wolf__: it is
03:24 PM Wolf__: over 8 lane roadway
03:25 PM XXCoder: nice. yeah dont want to wait for people to finish crossing. long red light
03:26 PM Wolf__: aprox 20 cars under the thing right now
03:26 PM Wolf__: or 6 or something
03:26 PM Wolf__: no one knows lol
03:27 PM XXCoder: get worried when 20 cars and only 6 cars is under the nonecludian thing ;)
03:27 PM Wolf__: stream I have up had someone say 20 cars, then 6 car
03:28 PM XXCoder: btw got toyrus gift card? you have 30 days
03:30 PM Wolf__: https://cdn.vox-cdn.com/thumbor/I1P4tbyOgxKnVbx3x0bKCVfCc_Y=/0x0:3514x2492/1200x800/filters:focal(1476x965:2038x1527)/cdn.vox-cdn.com/uploads/chorus_image/image/56203955/University_Bridge_Residences.0.jpg I wonder if this rendering is the same bridge
03:30 PM XXCoder: or same design in least
03:31 PM Wolf__: yeah same design, which means they put the span up without the cable support
03:33 PM gloops: quite an important omission
03:33 PM XXCoder: "I love that design but dunno about wires, can we... just not build that part?"
03:34 PM gloops: would detract from photos of the campus
03:37 PM Wolf__: you can see the tie points in the photos of them setting the span
03:37 PM SpeedEvil: You could redesign the truss to be adequate - I mean - it's only pedestrians, not huge trucks.
03:39 PM gloops: trouble with concrete, its own weight becomes prohibitive for longer spans
03:40 PM Wolf__: yup, and the construction co probably figured it would be fine free standing until they got the other span and cable supports in place
03:41 PM gloops: they leave them without cables during contruction, when the road is closed
03:46 PM Tom_L: probably hired 3rd world labor
03:49 PM Wolf__: willing to bet there is some engineer banging his head on his desk yelling “I didn’t design that to be built that way”
03:49 PM gloops: and somebody who took a backhander packing his bags
04:01 PM XXCoder: Wolf__: https://cdn.vox-cdn.com/uploads/chorus_image/image/59044059/DYWk9_IXUAIjNAH.0.jpg'
04:01 PM XXCoder: Wolf__: https://cdn.vox-cdn.com/uploads/chorus_image/image/59044059/DYWk9_IXUAIjNAH.0.jpg
04:02 PM XXCoder: it dont look like building was finished yet
04:02 PM XXCoder: you can see achnor points on top
04:03 PM Wolf__: yeah. good find
04:05 PM XXCoder: http://www.bbc.co.uk/news/world-europe-43416950 LOL
04:15 PM gloops: thats ridiculous it only takes a day to get the cables on
04:15 PM Wolf__: if the 2nd span was in place
04:17 PM Wolf__: IMO looks like it should have been done, short span > long span > cable support install
04:17 PM Wolf__: not place long span and let it sit and hope it holds itself up
04:18 PM gloops: i cant see how they would even let them start until everything was made and on site with cranes in situ
04:20 PM Wolf__: probably went like, lets use our initial $$ draw to build the big span then use the next to do the smaller parts without really looking at the actual engineering of the bridge
04:22 PM Wolf__: and how fast they could get it up w/ least amount of lane closures
04:23 PM * fragalot has just re-drawn all of the store-bought components in a parametric Inventor model
04:23 PM fragalot: so much nicer to work with than f360
04:25 PM Tom_L: i'm feelin your pain
04:25 PM Tom_L: if i ever did use it, i would model the parts in something else and use it for cam
04:26 PM fragalot: yup
04:26 PM fragalot: the nice thing now is that I can do the parametric parts properly now
04:26 PM Tom_L: i was tweaking my old cam last night a bit
04:26 PM Tom_L: just cleaning a few things up i never got to
04:26 PM fragalot: so all I need to do to have a mill of different proportions is edit 1 excel field
04:26 PM Tom_L: added fixture offsets to it finally
04:29 PM Deejay: gn8
04:29 PM gloops: nite
04:38 PM gloops: Transport Secretary Chris Grayling explains how the Space Bill, which became law today, will create a framework for the commercial #space industry in the UK
04:38 PM gloops: ooh might be getting some rocket launches here
04:39 PM Tom_L: disguise for nuke testing???
04:39 PM gloops: possible i suppose
04:39 PM fragalot: gloops: does the UK have enough open space to do actual launches?
04:39 PM Tom_L: donald is watching you
04:39 PM fragalot: there is a reason the US does it in the middle of nowhere...
04:40 PM Tom_L: yeah, there's nothing out there in the Arizona desert
04:40 PM gloops: yes i think we do, you dont need a lot of space to launch a rocket really
04:40 PM Tom_L: you can see the potholes from google maps
04:40 PM DocHopper: Anyone here have a Chinese 40 watt laser?
04:41 PM Tom_L: no, i'd just burn the house down if i did
04:41 PM fragalot: I ran a 100W one for a while
04:41 PM DocHopper: fragalot: Oh ya? What happened to it?
04:41 PM fragalot: wasn't mine, long story short, supplier failed to deliver & allowed me to use their demo model until they finally canceled the order completely
04:42 PM DocHopper: So they took it back?
04:43 PM fragalot: yeah, I didn't want to keep the demo model as it took up waay too much space for what I needed
04:43 PM DocHopper: Bummer! So not many folks using lasers in linuxcnc, eh?
04:43 PM gloops: CaptHindsight uses them i think?
04:43 PM Wolf__: I was planning on building a c02 laser at some point
04:44 PM Wolf__: but not using lcnc
04:44 PM gloops: a laser would be very useful for me, but i am reluctant on safety grounds
04:44 PM Wolf__: c02 isnt bad
04:45 PM gloops: id only want something for engraving/pyrography
04:45 PM fragalot: used properly they're fine, if you get something decent anyway
04:45 PM Wolf__: enclosed + any safety glasses no eye issues, just slight fire hazard
04:45 PM fragalot: the fire hazard part is normally quite well contained too
04:46 PM fragalot: small amount of pretty dense material in a metal box, after all
04:46 PM Wolf__: yeah, usually just cooked the machine itself lol
04:46 PM Wolf__: cooked/cooks
04:46 PM DocHopper: CaptHindsight: You've got a laser?
04:46 PM DocHopper: Wolf__: You should get one!
04:46 PM Wolf__: if you dont clean the drop out of it you can have a fire issue
04:47 PM Wolf__: I was looking at 150w RMS
04:47 PM fragalot: the one I had had quite a fine mesh on the table, so having "drops" fall into the abyss was very unlikely
04:47 PM Wolf__: so $$$ is holding me back, plus floor space
04:48 PM fragalot: my uncle actually bought one, apparently
04:48 PM fragalot: no idea which one, or how well it works
04:48 PM DocHopper: Drops == Cutoffs?
04:48 PM fragalot: DocHopper: yes
04:48 PM DocHopper: ty
04:49 PM DocHopper: Well maybe I'll grab one and get everyone a bit more interested!
04:49 PM Wolf__: I know one of the guys that use to frequent the channel did burn a shop down with a co2 laser lol
04:49 PM DocHopper: Wolf__: How?!
04:50 PM gloops: i dont like the look of some of this laser cutting, all the bits are burnt black - that cant be far from catching fire
04:50 PM Wolf__: I forget but I think it was either setting cutoffs on fire or the beam reflected out of the bottom of the cabinet
04:50 PM fragalot: gloops: the black is superficial, and that's literally how the laser cutting / plotting / engraving works. :)
04:51 PM fragalot: I'm more worried about a brushed motor sparking the dust collector a light in a woodshop than I am afraid of a laser cutter setting it on fire
04:51 PM Wolf__: only 2 issues for my build is I want nice 1.5m rail setup and $2000 worth of laser tube/psu
04:52 PM gloops: i remember somebody posting a pic of the 'overnight job' he set it running then went out boozing with his mate - expensive machine was crozzled in the morning
04:53 PM gloops: fragalot how difficult is the superficial black to remove?
04:54 PM fragalot: gloops: how good are you with a sander?
04:54 PM Wolf__: its just soot
04:54 PM gloops: ah well if its just soot or smoke damage, so to speak thats not bad
04:55 PM gloops: fragalot pretty good, but that doesnt mean i want to spend days sanding round intricate contours
04:55 PM Wolf__: it burnishes nicely lol
04:56 PM fragalot: gloops: you sandblast those :P
04:57 PM gloops: and thats another risky pastime - shocking sandblasting injury posted on facebook yesterday
04:57 PM gloops: what you want is the part straight off the machine straight in a box - in the post
05:01 PM Wolf__: I think part of it might be right laser power vs what you are cutting. to low and it burns more then vaporizing the wood
05:02 PM fragalot: yup, it's a balance
05:02 PM gloops: cant remember which group now - some bloke posted pics of his leg, stuck sandblasting nozzle into his thigh, freaked out and split his leg to the bone down to the shin
05:02 PM fragalot: some things cut better with multiple high speed low power passes, others need it done in one
05:03 PM fragalot: gloops: this is why the right PPE are important regardless of what you're doing
05:04 PM fragalot: that, and idiots exist everywhere.. a plant I went to a few years back had HUUUGE air hose nozzles that the workers could use to dust themselves off
05:04 PM Wolf__: sandblasting setup for blasting heavy equipment vs blast cabinet for cleaning wood/light metal is two diff things lol
05:04 PM fragalot: when I asked why they were so large, the answer was quite simple
05:04 PM fragalot: let's just say there was an incident involving a finer air nozzle going where it wasn't supposed to
05:05 PM fragalot: :/
05:05 PM gloops: i bet there are a lot of bad accidents in garages and home workshops
05:06 PM Wolf__: can see some idiot sticking a 100psi nozzle in his ear to try to blow the dust out…
05:06 PM fragalot: sure, and one of the main reasons is that some people still have the mindset that PPE are ridiculous.
05:06 PM fragalot: Wolf__: it wasn't his ear.
05:06 PM Wolf__: lol
05:06 PM gloops: even simple things, a diy circular saw, can ruin a life in a few seconds of ignorance
05:07 PM Wolf__: table saws are good for trimming fingers
05:07 PM fragalot: gloops: that is one of the reasons that CE is all about machine safety
05:07 PM fragalot: to protect people from themselves
05:07 PM enleth: gloops: even the chinkest of all chinese CO2 lasers is safe if handled with some reasonable care - the most important thing being to never leave it unsupervised
05:07 PM enleth: gloops: it's so fast anyway that there's not much point doing that
05:07 PM gloops: hmm fast sounds good
05:08 PM gloops: would be a good companion for a router, if you can engrave with laser too
05:09 PM enleth: gloops: keep a small halon or CO2 fire extinguisher close to the machine at eye level and within reach for real emergencies, a small bowl of water with a rag in it for small incidents
05:09 PM enleth: if you see actual fire that won't go out immediately after the beam stops, open the cover and throw the wet rag on the workpiece
05:09 PM Wolf__: worst problem with the china co2, sold as 40w, 40 watt being max the tube will do right before it burns out, very crappy rail/drive systems, cheap all in one control board, bad ventilation and wiring
05:10 PM enleth: Wolf__: I've got a variation of the K40
05:10 PM enleth: mechanically it's actually fine, no complaints
05:10 PM gloops: probably wouldnt beed 40w for burning lines on wood
05:10 PM enleth: the wiring had to be re-done completely, but that's a simple job
05:10 PM enleth: gloops: well you do
05:10 PM gloops: DocHopper - enleth got a 40W
05:11 PM Wolf__: most of the china 40w I have seen that catch fire were at the aux plugs or switch
05:11 PM enleth: actually it's a 60W now, with a 150W power supply
05:11 PM gloops: enleth 40w - to keep the speed up?
05:11 PM enleth: (replaced the tube twice by now, and the power supply because the original one couldn't handle 60W tubes)
05:11 PM DocHopper: enleth: I think I was talking to you about it a few days ago? There was an ebay sale/
05:12 PM Wolf__: if you just want lines, diode laser will do
05:12 PM Wolf__: but they wont be very deep
05:12 PM enleth: gloops: pretty much yes, and besides, as soon as you realize how neat it is to be able to do stuff from 3mm (1/8") plywood in mere minutes, you will make use of this capability even if you don't plan on it now
05:13 PM enleth: Wolf__: lines, yes, filled shapes, hell no
05:14 PM enleth: gloops: a ton of different shop accessories, boxes, cases, etc. can be made from interlocking pieces, out of plywood or acrylic, and a 40W tube cuts 3mm stuff absolutely fine (just make sure the plywood uses laser-compatible glue)
05:14 PM gloops: http://sarahbradleydesigns.co.uk/wp-content/gallery/pyrography-gallery/personalised-pyrography-jewellery-box-1.jpg
05:14 PM gloops: i think thats hand burned, but basically for drawing on wood
05:15 PM Wolf__: https://i.imgur.com/2s4u8Qe.jpg https://i.imgur.com/SHEA5uS.jpghttps://i.imgur.com/oYn7JHD.jpg
05:15 PM DocHopper: enleth: What's the thickest material you would say the 40w laser cuts well?
05:15 PM fragalot: what material
05:16 PM enleth: DocHopper: for plywood and acrylic - 3mm cuts well, 4mm is iffy, more than that is multiple passes
05:16 PM Wolf__: that box, my 2.5w diode can do
05:16 PM fragalot: 1mm silicone gasket material doesn't even cut well with 100W, yet it flies through 5mm of ply as if it's not there
05:16 PM * fragalot bed
05:16 PM enleth: and multiple passes means ugly kerf and burnt edges
05:16 PM fragalot: gnite!
05:16 PM gloops: thats you laser Wolf?
05:16 PM Wolf__: yeah, its a $80 2.5w blue laser
05:17 PM Wolf__: crap cheap hiwin type rails and smoothie board running it
05:17 PM gloops: hmm ive looked at those before, it would be a cheap machine to make, how fast does it do that?
05:17 PM gloops: well cheap - as cnc machines go
05:17 PM enleth: oh, and one important thing about the chinese control boards, especially the lihuyu brand or whatever was the correct spelling - there is an opensource driver, K40 Whisperer
05:18 PM DocHopper: enleth: Even with tape?
05:18 PM enleth: we've started using it at HSWAW after some refactoring, works really well
05:18 PM enleth: DocHopper: tape?
05:19 PM Wolf__: gloops: I have it running slow because my ball trucks aren’t running smooth so about 1900mm/m
05:20 PM Wolf__: but its also shallow lines
05:21 PM enleth: gloops: so *if* you're comfortable with electrical repairs, you might want to get a K40 and treat it as a DIY kit - gut the electrical cabinet, rewire it properly, then start using it with K40 Whisperer
05:21 PM gloops: would be a while away, im only finishing one machine very 3 month lol
05:21 PM gloops: every
05:22 PM DocHopper: enleth: Tape for taking care of the burn marks.
05:22 PM CaptHindsight: DocHopper: I have many lasers. No sharks however. yet anyway...
05:22 PM DocHopper: gloops: Or just add a new control board. I'm talking about it now with the creator of smoothieboard over in #reprap.
05:22 PM DocHopper: CaptHindsight: Rats! Have a cheap 40w model?
05:23 PM gloops: cant i just run the motors with drivers and breakout board?
05:23 PM CaptHindsight: DocHopper: cutter, nope
05:23 PM gloops: and the laser - no idea how to control that
05:23 PM Wolf__: my co2 laser is run by a https://www.panucatt.com/azteeg_X5_GT_reprap_3d_printer_controller_p/ax5gt.htm
05:23 PM CaptHindsight: I have diode and RF lasers currently
05:24 PM Wolf__: using laserweb 4
05:24 PM DocHopper: Wolf__: Fancy!
05:24 PM CaptHindsight: http://www.scorchworks.com/K40whisperer/k40whisperer.html
05:24 PM Wolf__: for making the gcode and then I just put the file on the smoothie and run it direct
05:24 PM DocHopper: Wolf__: How ydo you like laserweb?
05:25 PM Wolf__: its okish
05:26 PM CaptHindsight: I need to make a XY2-100 interface for one of the Mesa boards
05:26 PM DocHopper: Wolf__: I would be using it to process vector files for cut out from solidworks, how is it for processing vector files?
05:26 PM CaptHindsight: it's similar to SPI http://www.newson.be/doc.php?id=XY2-100
05:27 PM Wolf__: dunno, I have no clue what I’m doing lmao
05:27 PM DocHopper: Wolf__: Heh, so much for informing me! :P
05:29 PM CaptHindsight: pcw_mesa: do you happen to have XY2-100 already working with an FPGA?
05:29 PM Wolf__: works well enough for me to stumble through exporting a DXF from solid works and getting it to draw on the wood for me
05:30 PM Wolf__: but I’m sure there is a better way to do it
05:42 PM enleth: DocHopper: no idea, on plywood I never tried tape, on acrylic it's not needed, no burn marks (but it melts on the edges a bit too much on multiple passes)
05:46 PM pcw_mesa: CaptHindsight: no, but it looks pretty easy
05:48 PM CaptHindsight: yes, just clock, sync and 20b serial data
06:11 PM Tom_L: anybody with a mill ever run a program in a workplane other than G17?
06:11 PM Tom_L: 3 axis that is
06:13 PM Tom_L: i'm trying to reason why you would
06:13 PM andypugh: My mill has a horizontal spindle and a vertical one. So yes.
06:13 PM Tom_L: the vertical one would be G18?
06:14 PM andypugh: In fact I think I have rigid-tapped along the Y axis.
06:14 PM andypugh: (but I could be wrong)
06:14 PM Tom_L: err G19 would be YZ
06:14 PM Tom_L: skunkworks probably would too
06:15 PM andypugh: To work it out, write XYZ twice, then split it
06:15 PM andypugh: XYZXYZ
06:15 PM andypugh: XY ZX YZ
06:15 PM andypugh: G17 = XY, G18 = ZX, G19 = YZ
06:15 PM Tom_L: good way to remember :)
06:16 PM Tom_L: just cleaning up my post a little
06:16 PM Tom_L: modified from another one years ago and decided to clean it a bit
06:20 PM Tom_L: andypugh, when one spindle is engaged is the other idle?
06:20 PM andypugh: Yes, I have to unbolt the vertical spindle to reveal the horizontal.
06:21 PM andypugh: It’s a horizontal miller with a vertical head adaptor.
06:21 PM Tom_L: yeah
06:21 PM andypugh: Though I recently made a high-speed spindle adaptor, so could use both now.
06:22 PM andypugh: Though even that rather blocks access: https://photos.app.goo.gl/yhHKpqIeVfZhRyOG3
06:23 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/temp/angledrive.jpg
06:23 PM Tom_L: for hard to reach places
06:24 PM Tom_L: offset drill attachment on the end
06:31 PM Tom_L: andypugh is the post in F360 pretty clean for linuxcnc?
06:31 PM Tom_L: or does it do odd things once in a while
06:32 PM andypugh: I haven’t had it do anything that I couldn’t explain, and that wasn’t shown in the preview.
10:13 PM hazzy-dev: Some light revving of a mazda rotary: https://youtu.be/IvYFFzPZZzQ
10:13 PM hazzy-dev: The tach can't keep up!
10:25 PM ziper: what car is this hazzy-dev
10:25 PM hazzy-dev: It is an MGB
10:27 PM ziper: nice
10:27 PM ziper: i need a new engine for my truck
10:33 PM hazzy-dev: ziper What truck do you have? I have a Mazda B2600i 5 speed, I love that thing!
10:33 PM ziper: datsun 720
10:52 PM hazzy-dev: ziper Nice! That is what my dad had before he bought the B2600i in 92, which I have inherited
10:55 PM Wolf__: heh, I have a mazda ranger as well
10:55 PM hazzy-dev: I have a thing for old small trucks, it is not good :)
10:55 PM hazzy-dev: this is currently tempting me, but I don't dare go see it because I no i won't be able to resist: https://atlanta.craigslist.org/atl/cto/6520004613.html
10:55 PM ziper: the only problem with mine is the body is rotten and the engine doesnt run
10:55 PM ziper: other than that its in great condition
10:56 PM ziper: mines a diesel, sd22
10:56 PM ziper: gn
10:56 PM hazzy-dev: Wolf__ I have a 03 mazda B3000 as well, basically a re-badged ford
10:56 PM hazzy-dev: Oh a diesel! even better!
10:56 PM hazzy-dev: ng8
10:56 PM Wolf__: yeah, I guess mine is a b3000, I really need to bother to fix it up, have a 2” lift kit for it
10:57 PM Wolf__: v6 5sp 4x
10:57 PM Wolf__: extended cab
10:58 PM hazzy-dev: I have the same one I think but only rear wheel drive. V6 5sp extended cab with the suicide doors
10:59 PM hazzy-dev: My B2600i extended cab is actually more roomy though :)
11:01 PM Wolf__: I really need to work on mine, I dont even remember what doors it has lol
11:02 PM Wolf__: got it, parked it
11:02 PM hazzy-dev: The B3000 has not been very reliable, all kinds of little things and needed valve job at 37k. Compression was so low it was only running on 3 cylinders ...
11:03 PM hazzy-dev: the b2600 has over 210k miles on it, still runs like a top and only standard maintenance
11:04 PM Wolf__: I have a spare V6, or 2
11:05 PM Wolf__: swapped the 4.0 v6 out of my 93 explorer for a ’95 v8
11:06 PM hazzy-dev: Nice! I bet that feels better
11:07 PM Wolf__: kinda scary, truck was setup for rock crawling
11:49 PM pink_vampire: hi