#linuxcnc Logs

Aug 15 2018

#linuxcnc Calendar

12:30 AM miss0r: mornin'
12:37 AM jesseg: Mornin miss0r
01:02 AM miss0r: Don't you just hate having a drawing that leave waaay too much undescribed? I can't even move forward with this build
01:34 AM veek: what's this tool called http://pix.toile-libre.org/upload/original/1534314806.png
01:35 AM fragalot: mornin
01:35 AM veek: dolly?
01:35 AM fragalot: cockford.
01:36 AM fragalot: miss0r: what? you expect the drafting engineer to do ALL the work for you?
01:37 AM miss0r: fragalot: if by drafting engineer you mean clueless client, no. I just expect *some* of the work done
01:37 AM miss0r: :)
01:37 AM fragalot: :D
01:37 AM miss0r: And I can't get him on the phone
01:38 AM fragalot: in my experience you don't really follow the client's drawing anyway. (which was a good thing, reallyà
01:38 AM Wolf__: assume napkin sketch is 1:1 size, build it
01:38 AM miss0r: Were talking a fold down camera wall mount. And theres a few things I have no idea about: How much does said camera weigh, how long from the wall should the mount be located, should it fold down, rather than fold up ect... I have no idea
01:39 AM fragalot: miss0r: camera weight 4-5kg, fold both ways
01:39 AM miss0r: hehe, I often disregard the clients drawings, because my clients are idiot :]
01:39 AM fragalot: length adjustable
01:39 AM miss0r: fragalot: LOL!
01:39 AM Deejay: moin
01:39 AM miss0r: well - they wanted it made for 230eur...
01:40 AM fragalot: bend some rebar & thread 1/4"
01:40 AM miss0r: so, i'm not building a space shuttle here
01:40 AM miss0r: hehe
01:41 AM miss0r: I'll make the 'wall part' of 15mm aluminium, with the bolt holes in a circular pattern.. well, you can loosen the screws and turn it 22.5 degrees
01:41 AM miss0r: the 'fold out' part will rest on a M14x1 screw, so you can ajust the level a bit
01:41 AM fragalot: just sell 'm this. https://www.clearlightsecurity.com/wall-mount-camera-mounting-bracket.html
01:41 AM miss0r: that is what I figures I'd do for ajustment. If I make the outrigger arm length ajustable, I will loose money
01:41 AM miss0r: hehe. yeah :D
01:42 AM fragalot: outrigger arm = M16 threaded rod :P
01:42 AM miss0r: But it needs to be able to folded away
01:42 AM miss0r: I have here one of those camera mount 'snap on' brackets, where I am to install one end on the bracket
01:42 AM fragalot: but yeah. undescribed jobs suck
01:42 AM fragalot: also - quit bothering clients this early on a holiday
01:42 AM fragalot: they're people too
01:43 AM miss0r: firstly: its not a holyday here, secondly: no, no they are not
01:43 AM fragalot: haha
05:11 AM jthornton: morning
05:33 AM Tom_L: morning
05:33 AM fragalot: ello
05:33 AM Deejay: huhu
05:57 AM XXCoder: jthornton: https://imgur.com/a/LiXbHUh lol
05:58 AM jthornton: what were you machining?
05:59 AM XXCoder: some woodlike thing
05:59 AM XXCoder: cant say more im afraid
05:59 AM XXCoder: its not wood, wholly artifically made
06:00 AM XXCoder: I took pic because it was really funny
06:00 AM XXCoder: everything there was perfectly coated over with chips
06:01 AM XXCoder: anyway part is really boring. 3 foot long one inch thick, sloped certain way, small tabs
06:02 AM XXCoder: err width one inch, approx .02" thick
06:07 AM ktchk is now known as ktc
06:09 AM ktc is now known as ktchk
06:11 AM ktchk: hi
06:11 AM jthornton: hey
06:11 AM ktchk: anyone use 3phase 1.2deg stepper motor
07:05 AM ktchk: anyone have 3phase 1.2deg stepper motor and controller?
07:06 AM elmo40: schneider-electric.com
07:07 AM elmo40: https://www.schneider-electric.com/en/product/BRS39AW361FCA/3-phase-stepper-motor---4.52-nm---shaft-%C3%B8-12-mm---l%3D98-mm---with-brake---conn
07:07 AM ktchk: elmo40: I had been using 2 phase 1.8 deg 5mm/turn screw for 0.025mm step
07:07 AM elmo40: how large do you want them?
07:07 AM ktchk: 20anyone use 3phase 1.2deg stepper motornm
07:08 AM ktchk: 20Nm
07:08 AM ktchk: how is 1.2deg step for 5mm/turn?
07:10 AM elmo40: what do you mean how is?
07:10 AM elmo40: you want 20Nm motor?
07:11 AM elmo40: Schneider has a 6Nm with 14mm shaft... how large is your project going to be?
07:11 AM ktchk: steps for 5mm/turn (200steps) devide by 1.2deg?
07:12 AM ktchk: 19mm shaft for knee mill direct drive
07:13 AM elmo40: 19Nm with 16Nm holding torque
07:13 AM elmo40: https://www.schneider-electric.com/en/product/BRS3ADW851ACB/3-phase-stepper-motor---19.7nm---shaft-%C3%B819mm---l%3D230mm---w-o-brake---connector
07:13 AM elmo40: and, with feedback
07:14 AM ktchk: how many counts per rev?
07:14 AM elmo40: 10,000
07:14 AM elmo40: on the encoder
07:14 AM elmo40: the motor is anywhere from 200 to 10,000 steps / turn
07:15 AM elmo40: full steps. not half steps.
07:15 AM elmo40: 1.8 °, 0.9 °, 0.72 °, 0.36 °, 0.18 °, 0.09 °, 0.072 °, 0.036 ° step angle
07:15 AM elmo40: looks like a nice motor. i wonder how much.
07:16 AM ktchk: I have question that stepper always stops at half step but can not stop at 1/4 step with micro step drive
08:00 AM gonzo_: I have 12Nm 2ph steppers on a bridgeport knee mill
08:00 AM gonzo_: 5mm/rev 25mm ballscrews on X and Y
08:00 AM gonzo_: no signs of it being under rated at all.... yet
08:25 AM * jthornton is very close to flashing the 7i96 from the configuration tool... time for work
08:44 AM Loetmichel: Hmm... i just used "WD-40 BIKE chain lube" as a cutting oil for threading aluminium... can do 6 M3 threads at 1300 rpm battery drill without relubing, where conventional cutting oil will be dry after 3 holes... and it does bog down the battery drill audibly less than the cutting oil. Also the tap dosent seem to get dull as fast... What trickery is that? What in hell did they mix into that
08:44 AM Loetmichel: stuff???
08:46 AM gregcnc: read sds?
08:48 AM mozmck: I've used WD-40 quite a bit for milling aluminum and found it worked better than any coolant I tried.
08:49 AM gregcnc: it's mostly stoddard solvent and some oil
08:50 AM mozmck: Yeah, but it works great. What is stoddard solvent?
08:50 AM gregcnc: almost kerosene
08:54 AM gregcnc: the china lube lists proprietary ingredients so you own't learn much
09:05 AM cradek: it might be moly
09:13 AM gregcnc: I don't understand those 3 phase steppers. they says 1000 step/rev is full step
09:13 AM gregcnc: most 3ph steppers are 300 step/rev
09:18 AM robotustra: I've seen that some people do own lub on the base of water + WD40 + dishwasher soap
09:18 AM robotustra: can't find a link
09:19 AM robotustra: like 90% of water, about 8% of WD40 and about 2% of soap
09:19 AM robotustra: don't remember exactly.
09:21 AM robotustra: I tried to use pure WD40 in the mist and it's just become a fog which is mainly flying away, not lubing anything
09:21 AM SpeedEvil: I tried to use WD40 in the mist - really upset the gorillas.
09:24 AM gregcnc: plain old WD40 doesn't work as chain lube. today wd40 makes real lube products
09:24 AM robotustra: it just fly around :)
09:56 AM fragalot: miss0r: it's gone.
09:59 AM Loetmichel: robotustra: i use 60% water, 35% Isopropy alc and 5% dishwasher soap as a coolant/lube on the CNC mill... with a flower spray bottle to dispense it
09:59 AM Loetmichel: the ones that are pressurized by an internal pump
09:59 AM Loetmichel: for aluminium
10:06 AM fragalot: miss0r: schaublin guy just sent me pictures of the machine on a pallet.. It's not small. lol.
10:12 AM miss0r: lol
10:12 AM miss0r: little secret: The machines you buy *ALWAYS* look smaller in the large warehouse you look at'em in ;)
10:13 AM fragalot: :P
10:14 AM fragalot: forwarded you the pics
10:21 AM Loetmichel: I really like how fast and painless that tapping is with this oil: https://youtu.be/Dwotc3oRdtw
10:21 AM fragalot: chain oil?
10:22 AM Loetmichel: bike chain oil
10:22 AM Loetmichel: as seen on the spray can on the right
10:22 AM fragalot: interesting
10:22 AM fragalot: interesting application method too :P
10:42 AM Loetmichel: fragalot: why? i sprayed some in the can lid and dipped the tap in every few holes
10:45 AM fragalot: Loetmichel: I figured that, I just never thought of doing it like that myself
10:45 AM fragalot: and always make a mess spraying it everywhere
11:09 AM L29Ah: can i use linuxcnc with dc motors with linear encoders instead of stepper motors?
11:11 AM cradek: L29Ah: yes
11:13 AM cradek: L29Ah: but if there is any backlash at all in the system (and there is) you should put the encoders on the motors instead, or use velocity mode servo drives with velocity feedback from the motors
11:13 AM cradek: otherwise you will not be able to tune it
11:32 AM jdh: that might look interesting depending ondeadband and lash
11:38 AM L29Ah: yeah thanks
11:39 AM Loetmichel: fragalot: hihi. yeah, spraying it on the tap every few holes would be a big mess... i thought everyone knew that "spray in the cap" trick.
11:39 AM Loetmichel: also it would waste a lot more oil
02:44 PM XXCoder: JT-Shop: looks like todays hot weather have also been "cancelled" by smoke
02:49 PM XXCoder: Loetmichel: pretty effective. we use tap paste for larger holes and rapid tap oil for smaller jobs
02:49 PM XXCoder: yeah usually never spray just dip and tap
02:51 PM JT-Shop: nice
03:03 PM miss0r: How to loose money in a hurry: https://imgur.com/a/35Hv7Kh first picture is the description with a pricetag of 230eur. The thing is; I would rather work for 1eur/hour that to send out crap. :] I've told him he can't get another one like it for the same money ;)
03:07 PM JT-Shop: what is it?
03:07 PM XXCoder: looks like camera holder
03:07 PM XXCoder: one that has arm that swings out and locks in place
03:07 PM miss0r: Its a foldable camera wallmount
03:08 PM miss0r: I believe its for taking office photos om employees
03:08 PM miss0r: of*
03:09 PM miss0r: Don't you just love the coffee stained napkin equivalent of a work sketch? :) This is what I get all the time as a jobshop
03:09 PM miss0r: anyway. Long day, I'll call it a night. See you guys around
03:10 PM XXCoder: miss0r: is it self-locking?
03:10 PM XXCoder: o it flips DOWN as opposited to orginial design
03:10 PM miss0r: Indeed
03:10 PM miss0r: I asked, and it was no problem
03:11 PM miss0r: anyway
03:11 PM * miss0r is out
03:12 PM XXCoder: later
03:34 PM TIMI is now known as Guest25373
03:59 PM * JT-Shop was hoping to get some parts done today...
04:03 PM Deejay: gn8
04:26 PM Tom_L: JT-Shop what you workin on?
04:27 PM Tom_L: i was gonna start tramming the mill after adding the risers to it but i snapped the tip off my indicator :(
04:27 PM Tom_L: so now i'm waiting for another tip
04:29 PM JT-Shop: http://spyderstore.com/index.php?route=product/product&path=59_67&product_id=78
04:29 PM JT-Shop: building some of those
04:30 PM Tom_L: ahh, i saw that yesterday
04:30 PM Tom_L: you got a tube bender?
04:31 PM JT-Shop: yea
04:31 PM JT-Shop: http://gnipsel.com/images/huth-hb-10/HB-1%2001.jpg
04:31 PM JT-Shop: http://gnipsel.com/images/huth-hb-10/HB-1%2002.jpg
04:32 PM Tom_L: nice
04:32 PM Tom_L: is that a tig?
04:34 PM JT-Shop: yea
04:38 PM JT-Shop: I need to have a digital caliper sale lol I have 6 6" calipers
05:15 PM Tom_L: i got an 8" a while back and like it alot better than 6
05:15 PM Tom_L: you can never have too many
05:16 PM Tom_L: I _really_ like this digital mic my kid gave me that he won at his contest
06:04 PM Tom_L: hazzy-dev are the affected channels op'd?
06:25 PM agris_ is now known as agris
06:45 PM hazzy-dev: Tom_L: Yes, and at XXCoder's advice I got Sigyn invited, which helps some
06:45 PM hazzy-dev: Need to set it to allow only registered users, but the ops is rarely around :(
06:46 PM Tecan: https://www.youtube.com/watch?v=wOarxQRKW9o weld3d printer
06:49 PM Tecan: this guy used water to aid it https://www.youtube.com/watch?v=s-K83fEZrw0
06:52 PM Tom_L: hazzy-dev, the mode i posted in devel is effective
06:53 PM Tom_L: hazzy-dev +r isn't necessary but you can
06:59 PM hazzy-lab: Thanks Tom_L!
06:59 PM hazzy-lab: i guess it is just coincidence, but a freenode op just stepped in and set the chan to +r
07:00 PM Tom_L: i'd pm the op and wait
07:00 PM Tom_L: you don't need +r, the +q one lets them join but they can't talk
07:00 PM Tom_L: and it doesn't disturb any logging bots etc
07:00 PM hazzy-lab: what you posted in devel seems like a great solution though, as new users can see what is going on
07:00 PM hazzy-lab: yes
07:00 PM Tom_L: then point them to this url:
07:00 PM Tom_L: in the topic
07:01 PM Tom_L: http://git.io/zrffqw
07:01 PM hazzy-lab: I was just reading that, lol
07:01 PM hazzy-lab: that is a good cheat sheet
07:02 PM Tom_L: yeah i have 2
07:02 PM Tom_L: https://gist.github.com/xero/2d6e4b061b4ecbeb9f99
07:02 PM Tom_L: more for users i think
07:03 PM hazzy-lab: that is good too!
07:04 PM Tom_L: with +r my bot wouldn't join a certain channel even though it's registered
07:04 PM Tom_L: not really sure why
07:04 PM Tom_L: the silence fixed it
08:14 PM infornography: I'm looking for motor specs for a maxnc-10, the data on the labels in worn off. Anyone know anything about these little mills?
08:23 PM Crom_: spindle or steppers?
08:25 PM Crom_: https://www.noisebridge.net/wiki/MaxNCMill
08:25 PM Crom_: 1/5hp sewing machine motor spindle
08:26 PM Crom_: X Y look to be 100+ ozin steppers, z looks to be a 42ozin
08:29 PM infornography: yeah that looks like it. You think that spindle is 110 AC then?
08:30 PM infornography: This one is not closed look tho
08:30 PM infornography: loop
08:31 PM Wolf__: got pics of yours?
08:32 PM infornography: https://cdn.discordapp.com/attachments/472606011354644481/479455444918861841/MaxNC10.jpg
08:34 PM Wolf__: seems missing something
08:35 PM infornography: the board fried, it is partially dissembled
08:36 PM Wolf__: 110 input to the controller?
08:36 PM Wolf__: going to guess the spindle was powered from the controller
08:37 PM infornography: yeah, there is a transformer in the cover
08:39 PM Wolf__: that doesnt tell much, controller would need DC for some things
08:41 PM infornography: I looked at the board for s few minutes, but it's not in front of me now. There was some PICs and nand gates and mosfets, the stuff that ran to the spindle was a more foreign to me though
08:42 PM infornography: The way the stuff was crammed in there it was no surprise stuff was fried
08:42 PM Wolf__: well, one way to find out, put 110 on the spindle motor wires, if it spins, its 110, if it smokes, it might be DC
08:43 PM infornography: I will play with it.
08:43 PM Wolf__: might be some better ways to figure out what the motor is wound for
08:45 PM Wolf__: thing kinda reminds me of a sherline mill
09:00 PM jdh: didn't cradek have a maxnc?
09:02 PM {HD}: Wolf__: the pcb2gcode dev just did a PR that fixed most of the issues I was having with it. And the FlatCAM guy has a private repo were working on and testing soon to fix all of those problems too!
09:03 PM Wolf__: nice
09:03 PM {HD}: Now I am trying to find something fun to start on the 3d printer while I wait for this laser test to finish.
09:04 PM {HD}: Yea, soon I will know everything about laser&pcb
09:04 PM Wolf__: lol
09:27 PM {HD}: Anyone know the duty cycle of these cheap 2.5 W and 5.5 W cheap Chinese lasers is?
09:30 PM Rab: On once, off forever
09:39 PM {HD}: Ha
10:23 PM jdh: what can you do with them? engraving?
10:25 PM Tom_L: start fires
10:28 PM justan0theruser is now known as justanotheruser
11:13 PM miss0r: Mornin'
11:35 PM fragalot: mornin
11:36 PM miss0r: heya
11:38 PM fragalot: nothing more fun than waking up from one of the fire alarms crying out because it's battery is low
11:38 PM fragalot: only to get up, replace it, get back in bed.. and have the same thing happen with a different one
11:38 PM fragalot: half an hour later
11:38 PM fragalot: >.>
11:38 PM hazzy-lab: LOL, what are the chances? seems real low
11:39 PM hazzy-lab: the batteries seem to last about 8 years here
11:39 PM fragalot: in my experience: There was a 100% chance.
11:39 PM miss0r: hehe
11:39 PM fragalot: hazzy-lab: the ones I bought claimed 10yrs, so far they have reached an average of 3 years
11:39 PM miss0r: Same reason you don't use relays from the same production batch in redundant systems
11:40 PM fragalot: I think that the 2 I pulled down are the last 2 from that batch, all the others have been replaced
11:40 PM fragalot: so these are going byebye too
11:41 PM miss0r: most likely. if they are seated in the same temperature & identical fire alarms
11:42 PM miss0r: also, always check the series number when buying new bulbs for your headlights
11:42 PM hazzy-lab: we were required to hard wire our fire alarms in a few years ago, it was a pain
11:42 PM elmo40: it is annoying. running all that wire just for a 9V alarm.
11:43 PM hazzy-lab: ours are 110V 14awg wire :(
11:43 PM miss0r: damn
11:43 PM elmo40: that is what i mean
11:43 PM miss0r: 'round here we are not even required to have firealarms
11:43 PM elmo40: a waste of 120V wire for a 9V device.
11:44 PM hazzy-lab: elmo40: oh, right!
11:44 PM elmo40: miss0r, you are not? what country is that?
11:44 PM miss0r: elmo40: Denmark
11:44 PM elmo40: i find that difficult to believe.
11:44 PM miss0r: if you build something new, you are required to install it.
11:44 PM elmo40: you are part of the EU
11:44 PM miss0r: yeah
11:44 PM elmo40: do they not mandate this stuff?
11:44 PM elmo40: ah, i see.
11:44 PM fragalot: no
11:45 PM fragalot: not for older homes
11:45 PM elmo40: i'd install them! and CO meters, too.
11:45 PM miss0r: elmo40: just buy a canarie bird
11:45 PM fragalot: mine are not required either, but it's like a helmet.. it's not because you aren't required to wear it that you shouldn't.
11:45 PM fragalot: (on motorbikes, helmets ARE required, but that's beside the point)
11:46 PM elmo40: miss0r, canaries do not make noise when there are issues... how will it wake me up after it dies?
11:47 PM fragalot: elmo40: because it STOPS making noise.
11:47 PM fragalot: your subconscious will suddenly notice the silence & wake you up
11:48 PM fragalot: another beepy thing! (bread's done :)) bbl
11:48 PM miss0r: THAT... or you tie a string around it, up to a lever switch, that will turn on the alarm when it drops to the ground
11:48 PM elmo40: LoL
11:48 PM miss0r: :]
11:48 PM fragalot: miss0r: perch it over the bed & wake up as it hits your face
11:48 PM hazzy-lab: Yeah, same here, we never needed fire alarms till the house burned and we did a renovation, lol
11:48 PM miss0r: fragalot: lol, how very little mcgyver of you
11:48 PM hazzy-lab: since we renovated we needed to install the alarms
11:51 PM elmo40: I have natural gas appliances. I have smoke and CO alarms on all floors.
11:52 PM jesseg: Replacement bearings for my Atrump mill arived today from manufacturer. They are all double shielded NSK JAPAN, except one double shielded NTN JAPAN.
11:52 PM elmo40: They want us to install the flashing alarms in each bedroom.
11:52 PM jesseg: Of course the two motor shaft bearings (which mill manu didn't have) I got SFK double sealed from MSC -- those were made in Argentina.
11:52 PM fragalot: I only have CO in the livingroom, all other gas appliances are fully sealed
11:52 PM elmo40: fully sealed? what does that even mean?
11:52 PM elmo40: it does not bring in air from the room?
11:52 PM elmo40: direct from outside?
11:53 PM fragalot: ŷes
11:53 PM elmo40: I see
11:53 PM elmo40: except fire place or stove ;-)
11:53 PM fragalot: I have 2 gas heaters that pull air from outside
11:53 PM fragalot: and one that doesn't