#linuxcnc Logs

Sep 03 2019

01:58 AM Loetmichel: mornin'
02:14 AM Loetmichel: soo, got the next PSU shielded and filtered... 3dprinting and a CNC mill sure are handy... :-) -> http://www.cyrom.org/palbum/main.php?g2_itemId=17514&g2_imageViewsIndex=1
02:27 AM _unreal_: OMG I'm done
02:27 AM _unreal_: I finally finished the CAD work building this micro cnc machine
02:28 AM XXCoder: Loetmichel: nicwe
02:28 AM XXCoder: unreal nice
02:29 AM _unreal_: FACK didnt save my picture I exported
02:29 AM _unreal_: got to open design spark up again
02:30 AM _unreal_: Oh come on
02:30 AM _unreal_: now it wont load or my computer is having a SHIT fit? dont know
02:30 AM _unreal_: 3am ouch
02:31 AM _unreal_: well I guess I better check all the doors etc.. and get ready for bed
02:31 AM XXCoder: good morning
02:31 AM _unreal_: OMG this hurricane has just TOTALLY stalled over the bahamas
02:33 AM XXCoder: https://earth.nullschool.net/#current/wind/surface/level/orthographic=-78.53,26.77,3000/loc=-80.031,27.020
02:33 AM XXCoder: yep
02:33 AM XXCoder: been there for a bit
02:34 AM XXCoder: must hate whoevers there heh
02:36 AM _unreal_: https://drive.google.com/open?id=19VlY8azpnC9eZ7JNq42H4jq3nAH1Qj13
02:37 AM _unreal_: I'm sure the people there are saying FUCK this place
02:37 AM _unreal_: ok so what do you think of that?
02:37 AM _unreal_: the machine its self the work bed area is like 6x6" its tiny
02:38 AM XXCoder: wow small
02:38 AM XXCoder: engraving small suff
02:38 AM XXCoder: hey pink_vampire!
02:38 AM pink_vampire: hi XXCoder
02:38 AM XXCoder: hows ya
02:39 AM _unreal_: pink_vampire, https://drive.google.com/open?id=19VlY8azpnC9eZ7JNq42H4jq3nAH1Qj13
02:39 AM _unreal_: I'm going to make this for my daughter
02:39 AM _unreal_: going to mill it over the next few days to month
02:39 AM XXCoder: oh yeah forgot that
02:39 AM XXCoder: nice :)
02:39 AM pink_vampire: _unreal_: parenting done right!
02:39 AM _unreal_: I have to make fixtures for a number of the parts so I can do the double sided milling
02:40 AM _unreal_: pink_vampire, hell ya
02:40 AM pink_vampire: how old she is?
02:40 AM _unreal_: me being full time single DADA what better way to raise a girl then get her into machining at a young age
02:40 AM _unreal_: 10
02:41 AM pink_vampire: get her a unicycle
02:42 AM XXCoder: if I recall right that makes core strength way stronger, as well as some pevis as well
02:47 AM _unreal_: Damn just noticed I'm missing a few more mount holes
02:48 AM _unreal_: well to late to deal with it now
02:48 AM XXCoder: btter check twice than cut twice :D
02:49 AM _unreal_: Mount holes for Z and the main body
02:49 AM _unreal_: not z Y
02:49 AM _unreal_: Thats a quick and easy one
02:49 AM _unreal_: sigh...
02:53 AM * _unreal_ can see it now. pink_vampire thinking WHAAAA? a man teaching his daughter machining? huba huba...
02:53 AM _unreal_: HEH
02:55 AM pink_vampire: I think it is a very good thing!
02:56 AM _unreal_: YEP
02:56 AM _unreal_: pink_vampire, you being in the same time zone as I am. how come your up so late?
02:56 AM _unreal_: or early
02:59 AM XXCoder: 1 am here heh
02:59 AM XXCoder: wont sleep for couple hours
02:59 AM XXCoder: also, duh shes a vampire!
02:59 AM XXCoder: its her noon!
03:00 AM pink_vampire: I'm a vampire
03:01 AM pink_vampire: I need to make some parts for my unicycle
03:04 AM pink_vampire: _unreal_: I hope for you that dorian is not too close to you
03:16 AM Deejay: moin
03:16 AM XXCoder: yo
05:27 AM Tom_L: morning
06:01 AM sensille: i'm pondering to design a controller board for 3d-printer and cnc. would it be reasonable to have 3 high-power stepper drivers and 3 with lower power? do cncs typically need more than 3 high power steppers?
06:02 AM XXCoder: it supports up to 26 movements
06:02 AM XXCoder: how many typical depends a bit
06:02 AM XXCoder: 3 is common but not always
06:38 AM Loetmichel: sensille: why use different ones?
06:39 AM Loetmichel: a high power stepper driver can drive a low power motor just the same
06:39 AM sensille: price, space
06:39 AM Loetmichel: they are usually adjustable
06:39 AM sensille: the high power ones would require external mosfets
06:39 AM Loetmichel: or did you mean 3 high power ones and ADDITIONal axis in low power ones for extruder and stuff?
06:40 AM sensille: yes, 6 axes total
06:40 AM Loetmichel: i would rather have 4 or five high power ones then and only 2 low power ones
06:40 AM Loetmichel: so you can use a fourth/fifth rotational axis if wanted to
06:40 AM sensille: 5+2?
06:40 AM sensille: or 5+1? that would look stupid :)
06:41 AM Loetmichel: 5+2
06:41 AM Loetmichel: better have one high power spare than needing one ;)
06:41 AM sensille: is 60V/3A enough?
06:42 AM Loetmichel: but to be honest looking at the driver prices theese days i would simply use all high power TB6600 or similar and be good
06:42 AM Loetmichel: should be good enough yes
06:42 AM Loetmichel: it also simplifies the PSU if you only have ONE motor voltage
06:42 AM sensille: thinking of using TMC2590 + fets
06:43 AM Loetmichel: dont know that chip to be hones
06:43 AM Loetmichel: t
06:43 AM sensille: shame on you. it's on the market for already one day!
06:43 AM Loetmichel: i wouldnt use external mosfets though
06:44 AM sensille: why not?
06:44 AM Loetmichel: there is a bit of "magic" in fitting the right fets and PCB layout to that. the "all in one" driver chips are more reliable unless you are an EE with a diploma in RF and power electronics
06:44 AM sensille: there's no real high-power solution from trinamic with internal mosfets
06:45 AM sensille: the datasheet is quite explicit on how to do it, including recommendation for the fets and pcb layout
06:47 AM Loetmichel: if you feel confident with that kind of power electronics design: please do.. i just wanted to warn you that there IS some tripwires hidden in there.
06:47 AM Loetmichel: s/IS/ARE
06:49 AM rmu: sensille: look at st powerstep01
06:50 AM rmu: 8A and 100V or so
06:52 AM sensille: interesting. probably a good choice for CNCs. dunno if it operates quietly enough to win the 3d-printer market
06:52 AM sensille: with the TMCs i was hoping to serve both
07:22 AM jthornton: morning
07:25 AM Loetmichel: *Gnhihihi* sometimes i like my job. Coworker just came by asking:"We have to throttle these fans here, they are to loud... what resistors do i have to use??? Cue me going *explanatory bear* and teaching him about U=R*I, P=U*I and why he has to use THREE 62 ohms 0204 resistors instead of ONE 20 Ohms one... its nice if you can teach your coworkers something sometimes :-)
07:40 AM IRCNew: I'm interested in building a CNC for cutting wood. What control boards would you recommend
07:44 AM jthornton: for steppers?
07:46 AM IRCNew: I was wondering about control boards
07:47 AM IRCNew: but I would also need those.
07:47 AM IRCNew: Just to clarify using LinuxCNC is using a computer to calculate movement rather then an arduino or something like that
07:47 AM jthornton: correct
07:48 AM IRCNew: I do have a pentium4 with the parallel port on the board
07:48 AM jthornton: you can use the parallel port but for a more robust system Mesa makes interface boards that work with PCI, PCIe, and Ethernet ports
07:49 AM jthornton: https://mesaus.com/
07:49 AM IRCNew: thanks
07:50 AM jthornton: the 7i96 is inexpensive interface board for steppers
07:50 AM jthornton: I like Gecko stepper drives and for a low power <50v the G251 is a great drive
07:51 AM IRCNew: So is ethernet just standard TCP/UDP or does it use the port in a special way
07:52 AM jthornton: that's above my pay scale
07:53 AM IRCNew: Well do you know if I can plug it into the ethernet port of my computer
07:54 AM jthornton: yes, you want to use the ethernet port on the motherboard
07:54 AM jthornton: http://gnipsel.com/linuxcnc/uspace/
07:55 AM jthornton: that is complete instructions on setting up a pc for ethernet, I would use Debian 9
07:57 AM IRCNew: Well I would have to look into that more. But if it just plugs into the computer it should not be a problem
07:59 AM jthornton: https://mesaus.com/product/7i96/
07:59 AM jthornton: that card will run up to 5 axes
07:59 AM IRCNew: so is the pwm for a spindle
07:59 AM jthornton: if needed yes
08:00 AM jthornton: pwm takes one axis so pwm + 4 axes or no pwm = 5 axes
08:00 AM IRCNew: So you can use 5 axes or can you double motors for the y axis
08:00 AM IRCNew: or is it for some crazy rotation thing
08:00 AM jthornton: yea LinuxCNC 2.8 supports gantrys well
08:01 AM jthornton: you can use the axes any way you like
08:01 AM IRCNew: I'm looking at 2.5d cutting
08:02 AM jthornton: yea that's just XYZ axes
08:03 AM jthornton: if it's a gantry the Y can have two steppers
08:03 AM * jthornton is on vacation and heading out for some breakfast
08:03 AM IRCNew: yea that is what I'm thinking since the y axis is holding the motors for the other axes
09:37 AM _unreal_: There NOW I'm done
09:38 AM _unreal_: just finished the last of the cad as far as I can tell I think its likely perfect. not including some adjustments for the bearings
09:40 AM -!- #linuxcnc mode set to +v by ChanServ
10:29 AM Elmo40: perfect?
10:29 AM Elmo40: is that all? ;-)
11:45 AM skunkworks: is the rigol DS1054Z still a good buy? (throw around scope)
11:48 AM jym: skunkworks: https://www.youtube.com/watch?v=ETCOhzU1O5A
11:48 AM jym: skunkworks: I think I have the hack codes to make it 100MHz and enable all the features
11:53 AM skunkworks: Cool!
12:07 PM jym: PVC fitting to galvanized... use teflon tape?
12:07 PM Loetmichel: jym: for what?
12:07 PM jym: Loetmichel: water main
12:07 PM Loetmichel: as a gasket?
12:07 PM Loetmichel: if its threaded: yes
12:08 PM jym: Loetmichel: or would putty be beter?
12:08 PM jym: better*
12:08 PM jdh: PST
12:09 PM jym: jdh: PAcific Standard Time?
12:10 PM jdh: loctite 565 PSTe
12:11 PM Loetmichel: no idea, never used putty of sorts for water lines, regardless of material
12:16 PM jym: https://www.homedepot.com/p/RectorSeal-1-75-oz-5-Pipe-Thread-Sealant-25790/100144191
12:16 PM jym: IT's NSF approved too
12:23 PM jym: I'm kinda impressed, can be used on gasoline
12:24 PM skunkworks: Ihave had better luck with sealer... But that is just me.
12:24 PM skunkworks: (putty)
12:25 PM jdh: taper threads + tape can crack pvc of not careful
12:26 PM skunkworks: aluminum intake manifolds too.. (guess how I know)
12:27 PM jym: jdh: I'm gonna use the reactorseal instead, ty =)
12:27 PM jym: Plus it says it helps to prevent threads siezing
12:28 PM Loetmichel: jdh: hmm, the usual teflon tape should only provide a thin layer of "glide and seal"
12:28 PM jdh: skunkworks: and $1500 delrin rebreather heada.
12:28 PM Loetmichel: if you apply a dozen layers and then crank it down like a bersek: yes, it can crack plastic
12:28 PM jym: Loetmichel: But this is going to a galvazied fitting being the concern
12:29 PM Loetmichel: but if you have a bit of sensitivity for forces that usually doesent happen
12:29 PM jym: I had found the reactorseal because I read that anyone that has used it always passes inspections
12:30 PM Loetmichel: jym: that stuff seems to be good.
12:30 PM jym: http://rectorseal.com/web-media/Rectorseal-No5_PDS.pdf
12:30 PM Loetmichel: but if teflon tape is aviable why not use it instead of waiting for however long to get the sealant?
12:31 PM Loetmichel: ah, you already have it?
12:31 PM jym: Loetmichel: Water can be applied instantly up to 100 PSI up to 1.25"
12:31 PM Loetmichel: then use it if its so good
12:32 PM jym: Yeah, I just wasn't sure if needed at all, but can't hurt
12:32 PM Loetmichel: hihi, homedepot doesent want non-american customers... "access denied"
12:32 PM jym: Immediate pressurization on pipe up to 2" and 100 psi
12:32 PM Loetmichel: the reactor seal link works though
12:32 PM jym: per that pdf
12:33 PM Loetmichel: whats that in SI units?
12:33 PM Loetmichel: PSI always puzzles me
12:33 PM Loetmichel: ah, close to 7 bar... nice
12:34 PM jym: 689.4757 kPa
12:34 PM Loetmichel: but are you sure that you want to use galvanized steel water pipe in a new built?
12:34 PM Loetmichel: or is that galvanized pipe the old water main and you want to connect PVC to it?
12:34 PM jym: Loetmichel: No choice, it's already there on the pump, I'm just repairing the leak
12:35 PM Loetmichel: ah, i see
12:35 PM Loetmichel: then by all means use that sealant
12:35 PM Loetmichel: telfon tape is pretty allergic to rust/dirt in the threads
12:36 PM Loetmichel: i thought it would be a new galvanized fitting
12:36 PM jym: Loetmichel: I only PLANNED on repainting the pump house, never ever simple. Already had to grab the chainsaw, and now fix a leak, plus I found out one shutoff valve isn't working
12:36 PM Loetmichel: sounds like the usual "homestead" fun
12:37 PM Loetmichel: i can relate, but only second hand because of all the homesteader videos i watch on youtube... its my dream to one day find a spot in germany (and have the money) to do a homestead here myself
12:38 PM Loetmichel: but my hopes are not THAT high that i will find a loophole in german zoning laws... ;)
12:47 PM roycroft: you can squat on your new land and loetexit from germany
12:47 PM roycroft: declare yourself an independent person-state
12:49 PM Loetmichel: roycroft: that will most likely result in me being hospitalized in some mental institute and nothing else. Bad advice ;)
12:51 PM _unreal_: I'm starting to mill parts
12:51 PM _unreal_: for my daughters mini cnc machine
12:51 PM _unreal_: fingers crossed I didnt mess anything up. I'm milling the only part of this project that I dont have any on hand extra materials
02:36 PM _unreal_: going o take for ever to mill this part
02:36 PM _unreal_: biggest thickest part
02:36 PM _unreal_: :/
02:36 PM _unreal_: parts
02:36 PM _unreal_: didnt want to but I guess I'm going to 3d mill the bearing location pockets
02:36 PM _unreal_: they are OFF?? a bit and I'm not sure if I was two agressive in my cutting? and the machine flexed
02:37 PM _unreal_: or my milling gcode software is just doing something funky? or that I overlooked
02:41 PM _unreal_: ya I think that is a software offset from using two different softwares damn
02:46 PM t4nk-freenode: so.. gotta buy new materials before you can continue?
02:46 PM t4nk-freenode: ;)
03:03 PM Papagno: HI we have a dangerou problem with g33.1 coomand. If you command m3 s10 after g33.1 z-10 k2 and abort movement when axis z stay move down and repeat m3s10 after g33.1 z-10 k2 have a fast movement the z axis non controlled and not syncronized with spindle. is it present on 2.8 and actual master
03:04 PM jym: And back to the fucking hardware store....
03:04 PM t4nk-freenode: on the other hand.. hows things with that hurricane of yours? perhaps you could just step outside and gather some scraps from the streets ;)
03:04 PM Papagno: This proble is present in MDI
03:04 PM _unreal_: and I'm screwed FUCKING part moved
03:04 PM Papagno: and can replase in axis
03:07 PM XXCoder: Papagno: maybe report this in git
03:08 PM Papagno: I don't are register in GIT
03:08 PM rmu: not sure how linuxcnc deals with aborts on spindle synchronised moves
03:09 PM rmu: papagno: can you open issue on https://github.com/LinuxCNC/linuxcnc/issues
03:09 PM Papagno: Yes but want password
03:10 PM rmu: you can't create github account?
03:11 PM rmu: maybe the forum would be a better place to get help. https://forum.linuxcnc.org
03:13 PM Papagno: this is a bug and is dangerours, on real machine have distroyed a tool
03:17 PM Deejay: gn8
03:33 PM Papagno: ok have add bug at git
04:17 PM Tom_L: jym what was the issue with the valve?
04:48 PM jym: Tom_L: No clue yet, just got back from getting MORE parts
04:51 PM Tom_L: :)
04:51 PM Tom_L: but do you have enough yet?
05:50 PM _unreal_: The car is free
05:57 PM jym: Tom_L: Loetmichel Well, I THINK I fixed the leak, waiting for the water company to turn the water back on.
05:57 PM jym: I swear, the PVC 3/4" threads are NOT all the same.
06:36 PM Tom_L: did you replace the valve?
06:37 PM Tom_L: or find what was wrong with it
06:50 PM jym: Tom_L: When I had the water company come back, I tested it, it's fine, just lots of volume
06:51 PM jym: Tom_L: I added a PVC union, MIGTH have a tony leak or just residual water, not sure yet
07:17 PM _unreal_: flyback, https://drive.google.com/open?id=19VlY8azpnC9eZ7JNq42H4jq3nAH1Qj13
07:19 PM flyback: that shit is crazy
07:19 PM flyback: people buy those used ship containers and turn them into buildings
07:19 PM _unreal_: yep
07:20 PM _unreal_: flyback, So as I said before I'll give you one
07:20 PM flyback: I know but can't take it till I move
07:20 PM flyback: literally no space
07:21 PM _unreal_: the thing is like 8x8"
07:21 PM flyback: I don't set the rules
07:25 PM ve7it: jym, https://photos.google.com/photo/AF1QipPIqcyOmmvJLSr87HTEAlJiofMe2lq7ikuJ4Gg5 https://photos.google.com/photo/AF1QipOMN2NvYuubo2JZgUMdRouj8uRqpbgPnpGkdeny latest bench power supply project
07:25 PM jym: ve7it: 404
07:26 PM ve7it: damn google... works here... must be a sharing problem
07:27 PM jthornton: is google drive legal in cali?
07:28 PM jym: jthornton: everything else is, but google IS in California, so shrug
07:28 PM ve7it: https://photos.app.goo.gl/3nWXWz6ZubHeg9Uu5 any better
07:28 PM bjorkintosh: It's known to cause cancer in the state of california.
07:28 PM bjorkintosh: (EVERYTHING else too)
07:28 PM jthornton: lol
07:29 PM bjorkintosh: that's a fancy power supply. how much does it cost?
07:31 PM ve7it: bottom unit is metered variable A/C, top unit is D/C 3 floating supplies, usb charging station and a soon to be DC load
07:33 PM ve7it: mostly cheap chinese blocks and parts... scrap chassis, front panel was home made from arborite and plywood (laser etched on 3D printer)
07:34 PM ve7it: autotransformer was from junk box... nice to get it all usable and packaged for the bench
07:34 PM jym: ve7it: Very nice,
07:35 PM ve7it: I am kind of partial to the big red "oh shit" buttons
07:35 PM jym: I was JUST gonna ask about the "oh shit" buttons =)
07:35 PM ve7it: jym, thanks.... I am very happy with how it turned out
07:36 PM jym: ve7it: I personally would have loved a 30A inthere somewhere
07:37 PM ve7it: I have a couple of other high current supplies already for use with radio stuff 0-20V/20A and a 13.8V/35A
07:38 PM jym: ah ok
07:38 PM dan3wik is now known as dan2wik
07:40 PM ve7it: probably spent around $100 in china love parts and many days of waiting/cad/building
07:42 PM jym: lol
07:44 PM _unreal_: damn he left
07:45 PM _unreal_: I was doing to say jthornton. Be real now. according to the state of CALI google causes cancer
07:45 PM bjorkintosh: it's okay I already covered that _unreal_
07:45 PM bjorkintosh: he's now fully aware.
07:46 PM _unreal_: just picked up some new bits
08:16 PM _unreal_: good lord what a difference these down cut bits make
08:16 PM _unreal_: wish I had started with them
08:16 PM _unreal_: I would not have been in the issue I am right now
08:19 PM _unreal_: I think I need to replace BOTH of my Y flange thrust bearings
08:19 PM _unreal_: both are clicking :(
08:19 PM _unreal_: that will make the 3rd set of bearings I've worn out
08:19 PM _unreal_: heh
08:19 PM _unreal_: ether they where very cheap or I've over tightened them
08:19 PM _unreal_: likely both
08:30 PM _unreal_: any one around?
08:32 PM Tom_L: no
08:34 PM _unreal_: DAMN
08:35 PM _unreal_: hum. wonder if anyone would be interested in the first round parts for this MINI cnc I'm building. first one CLEARLY has some growing pains
09:30 PM bjorkintosh: well write it up and put it up somewhere.
09:30 PM bjorkintosh: you never know!
09:31 PM SpeedEvil is now known as Guest79328
10:24 PM _unreal_: 3d milling an area that my other bit messed up. not that it was messed up but using a different software didnt align for some reason
10:24 PM _unreal_: not sure why
10:31 PM Tom_L: _unreal_ how far off?
10:42 PM _unreal_: not bad
10:42 PM _unreal_: its enough that it wont matter anyways
10:42 PM _unreal_: its a 2 half retainer
10:42 PM _unreal_: and the othe half when I mill it WILL be perfect
10:42 PM _unreal_: so it will retain it correctly
11:29 PM _unreal_: going to be GREAT