#linuxcnc | Logs for 2019-04-23
Back
[00:05:06] -!- gloops has quit [Quit: Leaving]
[00:36:01] -!- ferdna has quit [Remote host closed the connection]
[00:36:19] -!- Inline has quit [Quit: Leaving]
[00:41:17] -!- ziper1 has quit [Quit: Leaving]
[00:41:29] -!- ziper has joined #linuxcnc
[01:14:09] -!- JesusAlos has joined #linuxcnc
[01:18:31] -!- gloops has joined #linuxcnc
[01:23:27] -!- c-log has quit [Ping timeout: 246 seconds]
[01:25:36] -!- c-log has joined #linuxcnc
[01:25:37] -!- c-log has quit [Changing host]
[01:25:37] -!- c-log has joined #linuxcnc
[01:53:27] -!- sensille_ has parted #linuxcnc
[01:53:50] -!- sensille has joined #linuxcnc
[01:55:54] -!- mase-tech has joined #linuxcnc
[02:01:34] -!- ziper has quit [Read error: Connection reset by peer]
[02:02:54] -!- mase-tech has quit [Quit: Leaving]
[02:14:50] -!- HP_ has joined #linuxcnc
[02:16:59] -!- gloops has quit [Ping timeout: 246 seconds]
[02:20:46] -!- fdarling has quit [Ping timeout: 244 seconds]
[02:24:20] -!- c-log has quit [Ping timeout: 246 seconds]
[02:25:48] -!- drzacek has joined #linuxcnc
[02:28:01] -!- c-log has joined #linuxcnc
[02:28:02] -!- c-log has quit [Changing host]
[02:28:02] -!- c-log has joined #linuxcnc
[02:29:26] -!- ve7it has quit [Remote host closed the connection]
[02:49:25] -!- syyl has joined #linuxcnc
[02:56:09] -!- P1ersson has joined #linuxcnc
[03:11:35] -!- net| has quit [Quit: Leaving.]
[03:13:15] -!- sameee has quit [Quit: Leaving]
[03:15:17] -!- Samiam1999DTP has joined #linuxcnc
[03:18:54] -!- Samiam1999 has quit [Ping timeout: 268 seconds]
[03:34:18] <Loetmichel> mornin'
[03:37:29] -!- c-log has quit [Ping timeout: 246 seconds]
[03:38:21] <Loetmichel> maaan, the things i have to do... now sitting on the mini lathe turning down brass standoffs into 6,35mm*11mm adapters with a 5mm diamenter 5mm deep hole in one side so the customer can put 5mm*20mm fuses into holders for 6.35mm*32mm fuses... 30 times :-(
[03:40:10] -!- c-log has joined #linuxcnc
[03:40:10] -!- c-log has quit [Changing host]
[03:40:10] -!- c-log has joined #linuxcnc
[04:34:00] -!- HP_ has parted #linuxcnc
[05:13:48] <SpeedEvil> Loetmichel: lolz.
[05:13:56] <SpeedEvil> (at ridiculous requirements)
[05:14:39] <Loetmichel> SpeedEvil: would be so bad if i had a CNC lathe... that small C0 on the other hand is a PITA to work series with.
[05:14:54] <Loetmichel> https://www.youtube.com
[05:14:57] <Loetmichel> :-)
[05:15:17] -!- XXCoder has joined #linuxcnc
[05:15:41] <SpeedEvil> Make one cylindrical part, and then slot and press a plug.
[05:18:17] <Loetmichel> if i had cylindrical brass stock i would
[05:18:32] <Loetmichel> but i only have some brass M4 standoffs... :-)
[05:21:52] <rmu> Loetmichel: looks like a job for a "geschützte werkstatt", don't know how to translate that into englisch
[05:24:23] -!- P1ersson has quit [Quit: Älska inte din nästa, älska den du har]
[05:29:51] -!- P1ersson has joined #linuxcnc
[05:30:43] <XXCoder> literally, protected workshop
[05:30:59] <XXCoder> not sure what it should mean
[05:34:37] -!- c-log has quit [Ping timeout: 245 seconds]
[05:34:51] <syyl> ah shop where handycaped people make parts under supervision
[05:35:00] <SpeedEvil> Not for 30 parts.
[05:35:04] <SpeedEvil> 60?
[05:35:11] <XXCoder> here we have lighthouse
[05:35:21] <XXCoder> its blind machinist and other stuff shop
[05:35:23] <syyl> those shops prefer usualy insane large numbers of parts
[05:35:35] <XXCoder> usually presses. LOTS presses.
[05:35:36] <syyl> we send a lot of stuff for assembly out to them
[05:35:49] <syyl> lots of manual workplaces with toggle presses
[05:35:52] <XXCoder> the workareas is very strictly structured so people cant have accients
[05:36:50] <syyl> yep :)
[05:37:21] <XXCoder> "cant" is wrong word, i mean much less likely
[05:38:06] -!- c-log has joined #linuxcnc
[05:38:06] -!- c-log has quit [Changing host]
[05:38:06] -!- c-log has joined #linuxcnc
[05:39:13] <Loetmichel> XXCoder: "behindertenwerkstatt"
[05:40:07] <XXCoder> interesting
[05:40:15] <XXCoder> gonna love germany language word combiner thing
[05:40:45] <Loetmichel> rmu: nope, its a job for a CNC "langdreher" lathe
[05:40:54] <syyl> not for 30
[05:41:00] <Loetmichel> that can feed 6m long round stock
[05:41:21] <syyl> they usualy hate you for making them setup a job for such small numbers
[05:41:38] <Loetmichel> syyl: correct, i would have made a few 100 of that so i have some stock if i outsoruced it to a CNC shop
[05:41:41] <syyl> there are only a small number of swiss-lathe shops that are setup to do small runs
[05:42:06] <XXCoder> sub-10 parts jobs at shop i work at is rare
[05:42:13] <XXCoder> and tend to be very hard jobs
[05:42:18] <Loetmichel> i know one... they even to single "non-standard" gears if you pay...
[05:42:24] <syyl> thats the parts i look for, XXCoder :D
[05:42:32] <Loetmichel> but boss is relu8ctant to pay his exorbitant prices
[05:42:38] <XXCoder> shop i work at is too expensive for easy few part job lot
[05:43:04] <syyl> which is absolutely ok, XXCoder
[05:43:10] <XXCoder> syyl: guy at work just finished out 2,000 parts job lol
[05:43:15] -!- P1ersson_ has joined #linuxcnc
[05:43:37] <syyl> no sense in tying up a highend machine with bumblefucking around on small runs ;)
[05:43:44] <XXCoder> its essenally just rouned top bar. made from larger alum thin plate (3mm or so)
[05:43:45] <rmu> my comment was not really serious. the obvious solution in the fuse-holder-case is to change the fuse holders
[05:43:46] <Loetmichel> XXCoder: usually "benhindertenwerstätten" have mostly mentally disabled workers, not so much physically disabled ones
[05:44:05] <XXCoder> loet interesting. no sensory loss jobs?
[05:44:07] <XXCoder> like blinded
[05:44:16] <Loetmichel> yeah, they are there, too
[05:44:20] <Loetmichel> but not that many
[05:44:32] <XXCoder> lighthouse here is all visual problems
[05:45:02] <Loetmichel> blind people and deaf people here dont work in manual jobs that often in germany, they usually do some desk job in a "normal company"
[05:45:29] <Loetmichel> same for quadripledges (spelling?)
[05:46:17] <Loetmichel> (the ones with a broken spine or some other reason to sit in a wheelchair)
[05:46:29] <XXCoder> i would love a desk job, but i probably will fall asleep
[05:47:35] -!- syyl_ has joined #linuxcnc
[05:47:54] <Loetmichel> those "disabled workshops" are operated by non-profit NGOs, and USUALLY have more people with learning disabilities or the likes than bodily harm.
[05:48:14] <XXCoder> its pretty cool really
[05:48:26] <XXCoder> we are still figuring what my nephew could do
[05:48:37] <XXCoder> hes sensorory austic
[05:49:16] <Loetmichel> so he would be pretty good at a job that stays the same for long periods of time?
[05:49:47] -!- syyl has quit [Ping timeout: 240 seconds]
[05:49:48] <Loetmichel> isnt that an "on the spectrum" characteristig that they like routine and get irritated if something changes?
[05:49:49] <XXCoder> yeah i was thinking program debugging etc
[05:51:18] <jthornton> morning
[05:56:27] <Tom_itx> morning
[05:57:25] <XXCoder> morning
[05:57:42] <Tom_itx> jt, small typo on your gnipsel menu
[05:57:50] <XXCoder> jt i ran all day and probably made spoonful of swarf.
[05:57:52] <jthornton> what's that
[05:58:04] -!- asdfasd1 has joined #linuxcnc
[05:58:08] <XXCoder> chips heh
[05:58:11] <Tom_itx> the qt one
[05:58:22] <jthornton> no I meant the typo
[05:58:32] <Tom_itx> the Tutoria one?
[05:58:58] <XXCoder> lol both of us managed to not answer, tom
[06:01:19] <XXCoder> 70 parts and spoonful of chips lol
[06:01:37] <XXCoder> it just adds chamfers to 2 holes on both sidea
[06:01:39] <jthornton> what were you doing?
[06:01:58] <XXCoder> unfortunately I also had to use files to deburr parts
[06:11:00] <Tom_itx> jthornton, https://github.com that's not the same as the QtPyvcp is it?
[06:11:16] <Tom_itx> no linuxcnc widgets i believe
[06:11:35] <Tom_itx> or are there linuxcnc widgets for c++
[06:11:39] <jthornton> no, that is something for 3d printing
[06:11:44] <Tom_itx> right
[06:12:00] <jthornton> no the linuxcnc widgets are in python
[06:12:02] <Tom_itx> but the environment is different
[06:12:19] <XXCoder> oh yeah whats linuxcnc status on python 2.0 vs 3.0?
[06:13:47] <jthornton> no one is working on anything that I know of except qtpyvcp and qtvcp
[06:13:54] <Tom_itx> he mentioned something about outputting gcode was why i looked at it
[06:14:09] <Tom_itx> ok
[06:14:27] <XXCoder> bit concerning as 2.0 ends in a year
[06:14:29] <jthornton> I wonder if he is reading the stl file or the g code from a slicer?
[06:14:37] <Tom_itx> i dunno
[06:14:44] <jthornton> will it be removed and no longer work?
[06:15:18] <XXCoder> i think simply unsupported
[06:15:40] <XXCoder> and later distros probably will remove. which isnt really a problem for linuxcnc as they roll their own distro modified
[06:15:58] <XXCoder> but no bugfixes essentally, and increasing outdated os
[06:17:43] <jthornton> I would not think that python 2 would have any bugs at this point
[06:18:06] <XXCoder> if it's bug-free it has bugs. if it has bugs it has 10 times more bugs
[06:18:14] <jthornton> no one is even doing that anymore
[06:19:26] -!- gloops has joined #linuxcnc
[06:19:51] <XXCoder> heh though i wonder how long python 2 would last with essentally no support
[06:19:54] <XXCoder> yo
[06:21:47] <jthornton> I guess at some point when it's not in a distro and not in a backport your screwed
[06:22:17] <XXCoder> yeah. linucnc would be blocked from using newer os
[06:23:04] <jthornton> I think linuxcnc has become so bloated with stuff that a stripped down version is needed and maybe that can be ported to python 3
[06:23:32] <XXCoder> some should be fobbed off into addon packages yeah
[06:23:36] <XXCoder> like image to gcode
[06:24:23] <XXCoder> also make addons that include some of your programs
[06:25:09] <jthornton> that's the approach that qtpyvcp has taken to be used with linuxcnc and not included in linuxcnc
[06:56:31] -!- The_Ball has joined #linuxcnc
[06:59:56] <The_Ball> skunkworks, finally making something usefull :) https://youtu.be
[07:13:29] -!- emsjessec has joined #linuxcnc
[07:36:34] -!- iiidefix has joined #linuxcnc
[07:40:02] -!- emsjessec has quit [Ping timeout: 245 seconds]
[08:23:50] <Tom_itx> jthornton, what would you strip out of it?
[08:24:22] Tom_itx is now known as Tom_L
[08:25:13] <jthornton> everything but the core
[08:25:24] -!- Sabotender has joined #linuxcnc
[08:25:40] <Tom_L> maybe not a bad idea
[08:26:40] <jthornton> yea the python interface seems to be enough to run linuxcnc but the launcher now does additional stuff that is not needed or wanted in some cases
[08:28:10] -!- P1ersson_ has quit [Ping timeout: 276 seconds]
[08:28:10] -!- P1ersson has quit [Ping timeout: 276 seconds]
[08:30:21] <jthornton> you getting any rain yet?
[08:33:02] <Loetmichel> sooo, 10 fuse adapter sets done, 20 to go... maaan that takes ages on that small lathe... -> http://www.cyrom.org
[08:40:48] -!- P1ersson has joined #linuxcnc
[08:41:12] -!- P1ersson_ has joined #linuxcnc
[08:49:50] -!- emsjessec has joined #linuxcnc
[09:21:42] -!- leorat has joined #linuxcnc
[09:23:01] -!- leorat has quit [Client Quit]
[09:23:46] -!- veek has joined #linuxcnc
[09:40:53] -!- ikcalB has quit [Ping timeout: 245 seconds]
[09:43:48] <jym> Loetmichel: Are you on crack? Seriously, fuse adapters???
[09:44:06] <Loetmichel> jym: nope.
[09:44:25] <jym> smh
[09:44:53] <Loetmichel> french military wants only to stock one type of fuse for their new PCs... if they want it i am willing to give it to them... not like the german VDE would object there ;)
[09:45:35] <jym> and new fuse folders wouldn't have been simpler?
[09:46:12] <Loetmichel> jym: fuse holders are an integral part of the mains filters... and they got ~50 PCs with two different series of filters
[09:46:25] <Loetmichel> one with the big fuses one with the small ones
[09:46:36] <Loetmichel> no option to change the holders
[09:46:42] -!- veek has quit [Quit: Leaving]
[09:47:13] <jym> no wonder they don't win any wars
[09:48:38] <jym> who thinks of these things?!
[09:49:16] <jym> nice job btw
[09:58:06] <gloops> you wouldnt want to be in full reverse in a tank with no spare fuse
[10:00:13] <jym> that's what foil is for, or .22 rounds
[10:01:36] -!- ikcalB has joined #linuxcnc
[10:03:21] <Loetmichel> jym: just get the powder out before using them as a fuse!
[10:03:39] <Loetmichel> otherwise that can have cathastropic effects i heard ;)
[10:04:04] <Loetmichel> gloops: the PCs are for office use. not in a tank
[10:06:25] -!- lukepighetti has joined #linuxcnc
[10:07:41] -!- lukep has joined #linuxcnc
[10:08:14] <gloops> ahh
[10:08:37] -!- lukepigh has joined #linuxcnc
[10:08:45] <gloops> drilling hss tool steel, any experiences, advice? flat stock 3mm 4mm etc
[10:08:57] -!- lukepigh has quit [Client Quit]
[10:11:37] -!- lukepighetti has quit [Ping timeout: 256 seconds]
[10:11:42] <jym> Loetmichel: .22LR bullet fuse... https://www.discovery.com
[10:12:11] -!- lukep has quit [Ping timeout: 256 seconds]
[10:14:40] <Loetmichel> jym: thats why i said "i heard"
[10:15:16] <Loetmichel> because i have no gun license and hence no ammo to test it
[10:15:22] -!- FinboySlick has joined #linuxcnc
[10:15:26] <jym> Loetmichel: I was just saying, no need to remove the powder ;)
[10:15:28] <Loetmichel> the link is region locked though
[10:15:32] -!- Inline has joined #linuxcnc
[10:15:36] <Loetmichel> so i cant watch it
[10:16:02] <jym> oh geeeze
[10:16:35] -!- P1ersson has quit [Read error: Connection reset by peer]
[10:16:36] -!- P1ersson_ has quit [Read error: Connection reset by peer]
[10:19:03] <jym> Loetmichel: 31m25s https://www.dailymotion.com
[10:21:48] jym is now known as Jymmm
[10:23:08] -!- justanotheruser has quit [Ping timeout: 246 seconds]
[10:36:05] -!- P1ersson has joined #linuxcnc
[10:36:24] -!- P1ersson_ has joined #linuxcnc
[10:41:26] -!- P1ersson_ has quit [Ping timeout: 250 seconds]
[10:41:26] -!- P1ersson has quit [Ping timeout: 250 seconds]
[10:42:08] -!- justanotheruser has joined #linuxcnc
[10:58:00] -!- drzacek has quit [Remote host closed the connection]
[11:04:48] -!- selroc has joined #linuxcnc
[11:13:39] -!- HSD has joined #linuxcnc
[11:20:53] -!- Ralith_ has quit [Ping timeout: 245 seconds]
[11:22:30] -!- selroc has quit [Quit: Leaving]
[11:30:37] -!- sumpfralle has joined #linuxcnc
[11:41:41] -!- jerryq has joined #linuxcnc
[11:44:54] -!- ziper has joined #linuxcnc
[12:48:08] -!- Ralith_ has joined #linuxcnc
[13:04:15] -!- likevinyl has joined #linuxcnc
[13:21:54] -!- fus has joined #linuxcnc
[13:22:00] -!- fus_ has quit [Ping timeout: 268 seconds]
[13:26:31] -!- Vq has quit [Quit: maintenance]
[13:31:45] -!- Vq has joined #linuxcnc
[13:33:22] -!- Vq has quit [Remote host closed the connection]
[13:41:49] <Tom_L> jthornton, yeah light rain all morning
[13:43:19] -!- ve7it has joined #linuxcnc
[13:43:27] -!- Vq has joined #linuxcnc
[13:43:40] <Tom_L> Loetmichel that's what CNC lathes are for
[13:44:56] <gloops> best wat to go about drilling HSS tool steel, about 4mm holes, 4mm thick blank
[13:45:02] <gloops> best way
[13:46:10] <Tom_L> cobalt?
[13:46:24] <Tom_L> as long as it's not hardened yet
[13:47:30] <gloops> its new steel so not hardened i dont think, so cobalt bits, loads of coolant i guess
[13:55:20] <cpresser> spiral toolpath with a 3mm carbide endmill?
[13:56:06] <gloops> cpresser only got woodworking spindle, i cant get the speed low enough i dont think
[13:56:06] <cpresser> but that would still be pretty close to a plunge-cut. I never tried to cut hss myself, so no clue how feasible that is.
[13:56:59] <cpresser> ask somebody to do it :)
[13:58:31] <gloops> well a pair of blanks for my shaper is £16 , the steel itself is about £2 to buy, i can grind the profiles myself, its just the location holes
[13:59:28] <gloops> probably end up spending more than £16 on burnt out drill bits to get one pair lol
[14:05:25] -!- togo has joined #linuxcnc
[14:06:38] <Tom_L> could be
[14:06:42] -!- Ralith_ has quit [Ping timeout: 245 seconds]
[14:06:50] <Tom_L> i know we cut tungsten with carbide cutters
[14:07:29] <Tom_L> but if you can't slow the spindle down it would likely just get hot
[14:15:57] <gloops> ill have a go on the bench drill, i can slow that down, see what happens, a hacksaw doesnt touch this steel
[14:17:04] -!- Connor_remote has joined #linuxcnc
[14:17:08] <gloops> was hoping more than anything that there was some magical diamond tipped bit or something that flies through
[14:17:16] <gloops> that i hadnt heard of
[14:18:41] <Connor_remote> okay so, with 5i25 how with g540 firmware, how do you swap the pins for step / dir? I'm using a BOB that has those swapped
[14:19:26] <syyl_> unhardened hss machines very unproblematic, gloops
[14:27:46] <gloops> syyl_ yeah in an engineering shop maybe
[14:28:19] <FinboySlick> gloops: Didn't you have a ghetto EDM drill?
[14:28:20] <gloops> im using an old walker turner drill with a bottle of coolant lol
[14:28:33] <syyl_> yeah, what else would you need?
[14:28:35] <gloops> not me FinboySlick..
[14:28:40] <syyl_> its just a toolsteel
[14:28:45] <syyl_> not unobtainium
[14:28:56] <syyl_> dont go crazy fast and dont rub the drill to death :D
[14:29:00] <gloops> syyl_ you think i should be ok then? ill try it tommorrow, too late now
[14:29:11] <syyl_> yes
[14:29:14] <gloops> if i keep pecking
[14:29:20] <syyl_> as long as its unhardened
[14:29:21] <gregcnc> Are you sure it's soft if a hacksaw won't cut it?
[14:29:44] <FinboySlick> Was going to say, if you can't hacksaw it, it's probably hardened.
[14:29:53] <gloops> a hacksaw does nothing, not quick anyway, you get well bored by the time theres any mark
[14:30:19] <gregcnc> it's not soft
[14:30:22] -!- Elmo40 has joined #linuxcnc
[14:30:27] -!- JesusAlos has quit [Quit: JesusAlos]
[14:30:51] <FinboySlick> gregcnc: maybe it's a copper hacksaw blade ;)
[14:31:24] <FinboySlick> How big a hole do you need, gloops?
[14:31:29] -!- Elmo42 has quit [Ping timeout: 255 seconds]
[14:31:32] <syyl_> if its hardened
[14:31:32] <gloops> 4mm
[14:31:32] <syyl_> well
[14:31:34] <syyl_> good luck
[14:31:54] <syyl_> you can drill it on a mill with carbide, but even thats a stretch
[14:32:14] <FinboySlick> gloops: Well, if you didn't have a ghetto EDM, you should make one ;)
[14:32:31] <gloops> i might need some non-hardened stuff to start with then, far as i know this isnt hardened, it wasnt stated
[14:32:38] <roycroft> an oxy-acetylene torch will do the job with ease, if not with finesse :)
[14:33:03] <gloops> needs to be round about, to locate the blade
[14:33:47] <gloops> https://www.ebay.co.uk
[14:33:54] <gloops> like that
[14:34:37] <FinboySlick> Dead tree carcasses, disgusting!
[14:35:30] <gloops> so yes you would buy the cutters you can get off the shelf, but if you want custom profiles..
[14:35:36] <FinboySlick> gloops: https://www.youtube.com
[14:36:36] <gloops> impressive FinboySlick
[14:37:00] <FinboySlick> For 40 bucks, you can do twice as good! ;)
[14:37:19] <gloops> but making machines to make machines, seem to have been down that road before lol
[14:38:54] <gloops> suppose i ought to establish whether i can drill this stuff first
[14:39:51] -!- andypugh has joined #linuxcnc
[14:42:33] <Elmo40> does EDM work with higher voltage or current? is is along the lines of welding when you have low voltage but high amps?
[14:44:10] <FinboySlick> Intuitively I would say higer voltage but I don't know for sure.
[14:44:38] <gloops> miss0r made a pretty advanced spark erosion machine
[14:44:54] <FinboySlick> Obviously if you want a round hole, it's a good idea to make the tool spin too.
[14:45:02] <gloops> yeah his rotated
[14:45:39] <FinboySlick> Elmo40: https://www.youtube.com has a pretty good explanation.
[14:49:31] <Loetmichel> Elmo40: EDM works by creating tiny sparks that generate cavitation in the cutting fluid and by that do "ablation"
[14:49:43] <FinboySlick> Would linuxcnc handle negative feed rate?
[14:49:46] <Loetmichel> its not melting the metal (not all of it)
[14:50:01] <FinboySlick> (where EDM needs to back off)
[14:50:22] <Loetmichel> FinboySlick: why should it? feedrate cant be negative, its a speed. there is no negative speed
[14:50:56] -!- Ralith_ has joined #linuxcnc
[14:50:57] <FinboySlick> Loetmichel: To simplify the control loop as per that last video I linked.
[14:51:15] <Loetmichel> FinboySlick: juse the peck drilling command
[14:51:25] <Elmo40> only negative direction
[14:51:34] <Elmo40> i was thinking of that, too.
[14:51:36] <Loetmichel> just in very tiny steps and long dwell
[14:52:06] <FinboySlick> Loetmichel: That's not quite as effective though.
[14:52:24] <Loetmichel> also the edm only has to back off if you have no forced liquid thru the center of the EDM electrode
[14:52:37] <Loetmichel> so you get clean fluid in the gap every now and then
[14:53:21] <FinboySlick> Loetmichel: Well, that Applied Science guy seemed to imply that both are pretty useful.
[14:54:18] <Loetmichel> FinboySlick: i made a few (manual) drill press EDMs for gettting broken taps out of engine blocks
[14:54:40] <Loetmichel> ciruit for the edm is dead simple
[14:55:05] <Loetmichel> and the feed down you can connect to the current signal
[14:55:12] <Loetmichel> more current= slower feed
[14:55:33] <Loetmichel> and every now and then pull out and go back in to get fresh fluid into the hole
[14:56:29] <Loetmichel> works pretty well, even with a simple drill press on looow rpm and regulating the current by hand on the quill lever
[14:57:46] <syyl_> inventing new ways of machining, interesting
[14:57:53] <syyl_> edm has to constantly back off
[14:58:11] <syyl_> to be anything more than a gloryfied spotwelder
[14:58:18] <FinboySlick> Hence my question about 'negative feed'.
[14:59:22] <Loetmichel> syyl_: nope. it has to maintain a certain gap
[14:59:42] <Loetmichel> not backing up
[14:59:44] <rmu> electric bell is a simple but effective construction
[14:59:54] <rmu> can EDM holes into razor blades *g*
[15:01:06] <rmu> https://youtu.be
[15:02:10] <FinboySlick> rmu: Used indicator as a work clamp. Lost all credibility.
[15:02:18] <FinboySlick> I mean micrometer.
[15:03:24] <syyl_> uhm yes, miss-formulated
[15:03:33] <syyl_> it has to maintain the gap
[15:04:01] <syyl_> and if you want to do any deep-hole work retraction or flushing trough the electrode
[15:05:24] <FinboySlick> Could it be that the ability to 'feed negatively' has to do with instances where your feed step is a bit too large to maintain an ideal gap?
[15:06:33] <FinboySlick> Eg: current too low, feed, current too high.
[15:07:04] <FinboySlick> Then you'd be 'pecking' by one feed step until the situation is resolved.
[15:07:37] <Loetmichel> then your feed resolution is to low
[15:08:27] <Loetmichel> but as syyl said: if you do deep holes and have no flushing thru the (hollow) electrode you need to "peck drill" or retract every once in a while to get fresh fluid into the hole anyways
[15:08:44] <Loetmichel> but that is not "negative feed" thats simply peck drilling
[15:09:11] <Loetmichel> "pull out, move back into the old depth, start the current/feed regulation again
[15:09:17] <FinboySlick> In the applied laboratory video he's not talking about peck drilling though.
[15:09:21] <Loetmichel> it DOESENT work without a current feedback
[15:09:25] <Loetmichel> been there tried that
[15:10:02] <Loetmichel> a fixed feedrate dosent work if you have the SLIGHTEST flucuation in material or electrode or mains voltage
[15:12:36] <FinboySlick> I imagine he used that negative feed to correct for those then.
[15:14:03] <Loetmichel> the way i came up with was to use an aplifier to get the current signal to 0-5V (5V for optimal current) and send that to an analog input into LinuxCNC, use that input "inverted" as a feed override
[15:14:35] <Loetmichel> than set a peck drilling command with a low but reasonable feedrate and 0,2mm steps between pecks, and let it start
[15:15:41] <Loetmichel> it moves down at programmed feedrate until the current rises , then slows down to zero feedrate at 5V current signal... every 0,2mm it "pecks" and starts the cycle again
[15:16:02] <Loetmichel> s/linuxCNC/EMC2
[15:16:06] <Loetmichel> it was some time ago ;)
[15:20:56] -!- Roguish has quit [Ping timeout: 268 seconds]
[15:33:13] <Elmo40> is there a way to make custom canned cycles? with movements controlled by different inputs ?
[15:33:37] <Elmo40> such as a value of resistance or change in pressure ?
[15:39:26] -!- Roguish has joined #linuxcnc
[15:43:06] -!- emsjessec has quit [Read error: Connection reset by peer]
[15:55:37] -!- Deejay has joined #linuxcnc
[15:56:17] <Deejay> hi
[15:58:38] -!- Ralith_ has quit [Ping timeout: 250 seconds]
[15:59:31] -!- Ralith_ has joined #linuxcnc
[16:17:27] -!- Samiam1999DTP has quit [Ping timeout: 240 seconds]
[16:22:57] -!- Samiam1999 has joined #linuxcnc
[16:30:42] -!- gloops has quit [Ping timeout: 250 seconds]
[16:41:37] -!- extor has quit [Read error: Connection reset by peer]
[16:41:55] -!- extor has joined #linuxcnc
[16:43:05] -!- Connor_remote has quit [Quit: Leaving.]
[16:50:16] -!- likevinyl has quit [Quit: WeeChat 1.9.1]
[16:52:54] -!- FinboySlick has quit [Quit: Leaving.]
[16:53:21] <Deejay> gn8
[16:54:20] -!- Deejay has quit [Quit: bye]
[17:08:55] -!- gloops has joined #linuxcnc
[17:09:42] <andypugh> Loetmichel: Actually LinuxCNC can do reverse run, controled by negative feedrates.
[17:09:58] <andypugh> We even had it mereged into Master for a while. I am not sure what the current status is
[17:10:00] <Loetmichel> andypugh: i never said it coudlnt
[17:10:10] <Loetmichel> i said "why should it?"
[17:10:16] <andypugh> rene_dev_: ? What happened there?
[17:11:04] <andypugh> Loetmichel: It could be handy for backing out a wire EDM if the part distorts enough to short the wire.
[17:11:46] <Loetmichel> yeah, less work than cutting the wire and restarting
[17:11:46] <andypugh> Or for plunge-edm to allow debris shorting the gap to fall out
[17:12:11] <Loetmichel> that should never happen.
[17:12:30] <Loetmichel> but if it does you have to stop and clean anyways
[17:15:17] <Loetmichel> but if that is the case the setup i described above would work even better
[17:15:57] <Loetmichel> you just have to amplify the current to 2.5V for optimum current and if it goes above the feed override gets negative
[17:16:29] <Loetmichel> the "peck drill cycle" is still needed for cleaning the cutting fluid in the plunge edm hole
[17:58:52] -!- Ralith_ has quit [Ping timeout: 276 seconds]
[18:01:58] <skunkworks> so.... Spindle current -> pid -> adaptive feed... Thoughts?
[18:02:05] <skunkworks> *spindle power
[18:11:17] <_unreal_> do any of you use servos?
[18:18:44] -!- jerryq has quit [Ping timeout: 255 seconds]
[18:24:34] <skunkworks> _unreal_: yes
[18:26:42] -!- gloops has quit [Ping timeout: 245 seconds]
[18:28:06] -!- Ralith_ has joined #linuxcnc
[18:29:15] <Lcvette> skunkworks: interesting
[18:30:03] <Lcvette> that would certainly dumb down the feedrate learning curve some
[18:30:15] -!- gloops has joined #linuxcnc
[18:30:49] <Lcvette> at least on machines that can handle the spindle loading to that point
[18:30:50] <Lcvette> lol
[18:32:09] <Lcvette> but i suppose if you have control of the parameters for spindle current vs feedrate you can dial in whatever you want
[18:32:14] <Lcvette> sunds pretty cool
[18:32:18] <Lcvette> sounds*
[18:33:38] -!- gloops has quit [Client Quit]
[18:34:06] <Tom_L> Lcvette did you see his video on it?
[18:34:16] <Lcvette> no
[18:34:20] <Lcvette> where?
[18:34:24] <Lcvette> :D
[18:34:34] <Tom_L> i'm sure skunkworks would be glad to re'post it :)
[18:34:43] <Tom_L> i lost track of it
[18:34:47] <Lcvette> :(
[18:35:22] <Lcvette> https://www.youtube.com
[18:35:23] <Lcvette> ?
[18:35:57] <Tom_L> looks like it yes
[18:51:30] <skunkworks> I tried it on real hardware - it worked'ish... I was failing at tuning it though and ran out of time
[18:52:08] <skunkworks> Got a pretty good oscolation that I couldn't get rid of
[18:53:08] <Tom_L> something like that may need a 'self tuning' pid
[18:53:28] <Tom_L> don't ask me how they work...
[19:03:33] -!- flyback has quit [Ping timeout: 268 seconds]
[19:11:57] -!- HSD has quit [Remote host closed the connection]
[19:15:56] -!- jerryq has joined #linuxcnc
[19:20:41] <andypugh> You can’t beat a goos osculation.
[19:21:08] <andypugh> (good osculation, I mean. Osculating a goose would be wierd, and often illegal)
[19:21:24] -!- syyl_ has quit [Quit: Leaving]
[19:30:31] -!- togo has quit [Quit: Leaving]
[19:33:39] -!- flyback has joined #linuxcnc
[19:36:38] <Tom_L> https://www.controleng.com
[20:02:03] -!- infornography has joined #linuxcnc
[20:08:41] <gregcnc> skunkworks I think it might work in some materials, but in others you'll just be burning up the tool
[20:08:50] -!- net| has joined #linuxcnc
[20:09:47] <_unreal_> skunkworks, what kind of servos?
[20:10:40] <_unreal_> I just got back from taking my daughter to the playground before the sun set
[20:13:05] <gregcnc> kuka robot sim in linuxcnc https://youtu.be
[20:17:19] -!- andypugh has quit [Quit: andypugh]
[20:23:46] -!- JT-Shop has quit [Remote host closed the connection]
[20:24:46] -!- JT-Shop has joined #linuxcnc
[20:27:28] -!- jthornton has quit [Read error: Connection reset by peer]
[20:27:36] -!- JT-Shop2- has quit [Read error: Connection reset by peer]
[20:27:36] -!- JT-Shop has quit [Read error: Connection reset by peer]
[20:28:27] -!- JT-Shop has joined #linuxcnc
[20:28:30] -!- JT-Shop2- has joined #linuxcnc
[20:28:36] -!- jthornton has joined #linuxcnc
[20:41:54] -!- justanotheruser has quit [Ping timeout: 258 seconds]
[20:42:01] <skunkworks> _unreal_: 40 ft-lb 8 brush servos, some brushless..
[20:42:13] <skunkworks> _unreal_: what is your quesion?
[20:47:32] <_unreal_> less of a question just wondering, I have smaller BLDC servo motors I'm looking at getting up and going
[20:47:36] <_unreal_> with built in encoders
[20:47:49] <_unreal_> I dont know what there working ratings are yet.
[20:51:47] -!- infornography has quit [Read error: Connection reset by peer]
[20:56:01] -!- justanotheruser has joined #linuxcnc
[21:07:10] -!- Roguish has quit [Quit: ChatZilla 0.9.92-rdmsoft [XULRunner 35.0.1/20150122214805]]
[21:09:26] <skunkworks> servos are cool
[21:09:29] <skunkworks> I like servos..
[21:09:33] <skunkworks> ;)
[21:10:38] <Elmo40> indeed they are
[22:09:37] flyback is now known as phlyback
[22:09:47] phlyback is now known as flyback
[22:33:42] <_unreal_> a3936sedt are the motor controllers I have that "" drive "" the servos I have
[22:34:06] <_unreal_> but they dont deal with the encoder
[22:34:16] <_unreal_> So I'm trying to figure out how to deal with them
[22:34:24] <_unreal_> I also dont know the working specs of the motors :/
[22:34:37] <_unreal_> torque etc...
[22:50:25] -!- Sabotend_ has joined #linuxcnc
[22:53:32] -!- Sabotender has quit [Ping timeout: 244 seconds]