#linuxcnc | Logs for 2012-10-27

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[00:17:45] <andypugh> This is rather nice. Whick Nick is MuellerNick? http://www.youtube.com/watch?v=SJQtx80euGM&feature=related
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[00:21:00] <r00t4rd3d> spammers all gone now huh?
[00:21:21] <andypugh> yeah, I kind of miss killing them
[00:25:37] <r00t4rd3d> the "Who Is Online" baffles me.
[00:25:50] <andypugh> I ignore it
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[00:28:59] <r00t4rd3d> i wish you could sort the threads.
[00:29:18] <r00t4rd3d> views/last post
[00:33:28] <andypugh> I am rather missing the persistent " view latest threads" link. That could be a config thing though
[00:33:48] <andypugh> halrun
[00:33:50] <andypugh> doh
[00:34:13] <r00t4rd3d> haldie
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[01:52:50] <cradek> https://i.chzbgr.com/completestore/12/10/23/ZMFgswpZH0eoTx8I5keI8g2.jpg
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[02:08:20] <tjb1> im ready for frakenstorm :D
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[02:31:09] <r00t4rd3d> they just talking shit
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[02:41:15] <jdh> they are?
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[03:03:15] <Thetawaves> diff viewer for stl files
[03:03:20] <Thetawaves> red deletion, green addition
[03:03:25] <Thetawaves> https://cubehero.com/physibles/iamwil/robokitty/history/0cecb53528a7be6eb6236e01f36b7e37dbb260c8/robokitty.stl
[03:12:31] <r00t4rd3d> http://i.imgur.com/dgYMF.jpg
[03:13:20] <ink-> scary
[03:13:59] * ink- gives him all the halloween candy before he sets a gnome curse
[03:19:17] <ReadError> omg
[03:19:22] <ReadError> cant tell if kid or midget
[03:21:32] <ReadError> ink-, i was thinkin about adding another axis to my machine
[03:21:38] <ReadError> and doing tap handles
[03:21:45] <ReadError> like brotastic ones
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[03:23:52] <jdh> you dont' get arrested for midget sex
[03:24:41] <ReadError> lets see how that defense holds up...
[03:25:15] <ink-> ReadError: haha nice
[03:26:00] <ReadError> too bad im not artistic
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[06:58:38] <DJ9DJ> moin
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[13:32:19] <archivist> andypugh, I saw that link for generation, I wrote one in gcode back in 2009
[13:33:43] <andypugh> It would be a good job for a CNC shaper.
[13:34:32] <archivist> with added variable accuracy http://www.mail-archive.com/emc-users@lists.sourceforge.net/msg14290.html
[13:35:35] <archivist> with his you could only improve the accuracy by adding cutting edges or faster spindle
[13:38:38] <archivist> odd bits of clean up http://www.archivist.info/cnc/generate_gear_n_teeth.ngc
[13:39:14] <archivist> still needs a bit more maths adding into it for pcd
[13:39:43] <andypugh> Internal gears seem like something of a challenge
[13:40:21] <archivist> there one needs a shaper
[13:41:25] <archivist> when I get a supply of round tuits I will make a shaper cutter to make a harmonic drive
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[13:48:29] <hdokes> Hey all... I am not the proud owner of a series 1 bridgeport mill... I understand there are others in here that have done cnc retrofits to the same... am I correct?
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[13:49:15] <hdokes> if so... can anyone guide me to any good sites for DYI conversion?
[13:49:26] <andypugh> I don't know if there is anyone on here right now with one, but there certainly have been several done
[13:49:41] <andypugh> Is yours the stepper version?
[13:50:07] <hdokes> no... no automation at all other than an powered x axis
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[13:50:33] <jthornton> hdokes, is it cnc now or just a manual mill?
[13:50:39] <hdokes> just manual
[13:50:46] <hdokes> want to make it cnc
[13:50:55] <andypugh> Ah, OK
[13:51:13] <hdokes> it looks like steppers would be less expensive over servos but not sure of the pros and cons of either
[13:51:45] <andypugh> On a Bridgeport-size machine steppers will really struggle
[13:52:05] <MattyMatt> steppers and handles don't mix either
[13:52:07] <hdokes> even larger ones? with high torque capability?
[13:52:09] <jthornton> my series 1 had an Anilam 1100M conversion on it
[13:52:17] <jthornton> with DC servos
[13:52:39] <MattyMatt> archivist does that gearcutting code use involute cutters?
[13:52:57] <hdokes> I have just found servos to be really expensive... not really sure why they are so much so over steppers... but if it makes more sense... I'd go the servos
[13:53:08] <jthornton> a couple of photos of the conversion from Anilam to LinuxCNC http://gnipsel.com/shop/bp1/bp1.xhtml
[13:53:58] <jthornton> hdokes, do you realize you need to replace the acme screws with ball screws?
[13:54:31] <hdokes> yes... expensive as well?
[13:54:44] <hdokes> jthornton... you have any video of yours in operation?
[13:55:00] <jthornton> no
[13:56:57] <archivist> MattyCNC, no
[13:57:27] <andypugh> hdokes: I am part way through converting a Harrison milling machine to CNC.
[13:58:28] <r00t4rd3d> I just messed up a piece of oak, I had my .25 endmill set as .125 diameter :(
[13:59:21] <r00t4rd3d> now my pockets are .25 bigger then they should be
[13:59:59] <andypugh> hdokes: I wonder if this guy still has any kits left? It's been a few years: http://www.cnczone.com/forums/bridgeport_hardinge_mills/36392-anyone_using_mcmasters_bridgeport_ballscrew.html#post709553
[14:01:44] <jthornton> heck that is McMaster Carr and they ship in 2 weeks
[14:02:09] <hdokes> andypuch... any idea how much you are going to have into it once completed?
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[14:02:28] <skunkworks> jthornton: http://www.cnczone.com/forums/1187539-post649.html
[14:03:17] <skunkworks> seemsremapping?
[14:03:21] <andypugh> hdokes: £1500 maybe?
[14:04:30] <andypugh> But I got motors from eBay, drives from Mesa (but I had to write the drivers). I have made my own patterns and had castings made.
[14:04:52] <skunkworks> (youtube video guy)
[14:05:09] <andypugh> it's not been a fast conversion, waiting for things to turn up at the right price.
[14:05:41] <jthornton> skunkworks, yea I emailed him this morning about looking at how he did the tool change
[14:06:33] <hdokes> andypugh... looks like that guy may be outta the ballscrews... what does that amount translate to in USD?
[14:06:54] <hdokes> I have the ability to do my own castings
[14:07:11] <hdokes> would be nice to have a drawing of one tho to see what I need to consider for dimensions and the like
[14:07:12] <andypugh> $2000?
[14:07:20] <MattyMatt> "#<pi>=3.14596" how long have named vars been in? are they in 2.3.5?
[14:07:24] <hdokes> that ain't bad at all andypugh
[14:09:39] <andypugh> I doubt that it can be done any more cheaply. Unless you can machine your own ballscrews and make your own end-bearing assemblies it will cot more
[14:10:19] <MattyMatt> end bearing assemblies seem doable if you can do castings, and have the manual mill to use
[14:10:34] <andypugh> It also helps that I had a bunch of Mesa cards lying about.
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[14:10:56] <andypugh> MattyMatt: I have several hundred quids worth of boring heads too.
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[14:11:32] <andypugh> hdokes: Reckon on at least double that unless you can do for yourself all the things I have done for myself.
[14:11:49] <MattyMatt> yeah milling a bearing pocket without cnc or an adjustable boring head would be "interesting"
[14:12:05] <hdokes> I have an opportunity to purchase an old Excello CNC mill that has a bad main computer board in it for $2,000... I think I may be able to offer $1,000 as the guy bought it from a school auction and he hasn't been able to move it yet... was thinking about leaving the bridgeport manual and converting the Excello... the reason I haven't bought it is Excello has long since been out of business and it has no tooling with it..
[14:12:08] <andypugh> And bear in mind that this is 18 months on and the machine still doesn't move. (because I am also doing other things)
[14:12:46] <andypugh> That is a much, much better ida than conveting the BP. Even at $2000
[14:12:52] <MattyMatt> could be $1000+ of servos and drivers in that
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[14:13:00] <jthornton> hdokes, if the drives still work and they take velocity input the conversion is not hard
[14:13:02] <hdokes> yeah... that's what I was thinkin
[14:13:28] <hdokes> it's in really nice shape otherwise... very clean
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[14:13:40] <andypugh> A converted BP doesn't end up as the best of CNC mills anyway
[14:13:46] <hdokes> can't find a peep about it online tho.. no manuals... etc
[14:14:07] <andypugh> Don't worry about that, just buy it before it disappears :-)
[14:14:10] <MattyMatt> dive in and do it from first principles
[14:14:16] <jthornton> usually you can trace the wires out
[14:14:33] <jthornton> is it close to me? :)
[14:14:37] <hdokes> my BP came with about $2,500 in tooling, guages, and accessories... couldn't beat the price... even having to travel 10 hours to get it... $1,400 for all
[14:15:15] <andypugh> The _only_ reason I am converting a manual machine is because I wanted one of the particular size, and for fun.
[14:15:45] <MattyMatt> I love my plywood dremel pusher, but some days I really just want a real manual mill
[14:15:55] <hdokes> I'll go to this guy and see if he'll take $1,000 for the excello... nice thing is I have LOTS of room for it
[14:16:07] <andypugh> A purpose-built CNC with a dead computer is the dream package for LinuxCNC
[14:16:20] <jthornton> yea
[14:16:35] <jthornton> bring enough cash to take it home
[14:16:42] <hdokes> yep
[14:16:49] <hdokes> it happens to be just an hour from me
[14:16:55] <hdokes> or less
[14:17:21] <andypugh> if you look on images.google.com for excello CNC, do you see anything like it?
[14:17:27] <MattyMatt> translate to UK english. It's a whole hour from me but I'll manage
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[14:21:07] <hdokes> well balls... looks like he sold it... his listing has been pulled
[14:22:25] <andypugh> Ask anyway?
[14:22:49] <MattyMatt> and keep asking. the buyer might never turn up
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[14:26:01] <hdokes> I'll touch base with him and see if he still hass it
[14:28:31] <MattyMatt> wave some real cash under his nose. that's a winner if the timewaster stalls >:D
[14:30:19] <MattyMatt> are dollars perfumed like old £ were?
[14:30:44] <MattyMatt> steppoppa taught me to tell notes by smell when I was a babby
[14:31:06] <MattyMatt> now they all smell of sweat and cocaine
[14:31:51] <andypugh> I would guess that $ bills all smell the same, to go along with all being the same size. The blind are't allowed to buy stuff in the US :-)
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[14:36:26] <MattyMatt> right I'm gonna go enjoy a bit of sunshine on my fully operational battle bicycle
[14:36:52] <MattyMatt> one good brake and 2 good tyres anyway. that's enough
[14:37:11] <MattyMatt> bbl
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[14:55:58] <archivist> FinboySlick, is the mill accurate yet?
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[15:00:56] <FinboySlick> archivist: I honestly don't think it'll be before it's taken appart completely and brought somewhere that can measure everything in place. The kind of weirdness that I'm measuring can only mean uneven rails.
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[15:02:00] <FinboySlick> But I have no real way of measuring that to correct it.
[15:02:21] <archivist> the rails follow the profile of what they are bolted to
[15:02:33] <FinboySlick> archivist: Yeah, that's what I meant by uneven.
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[15:02:54] <FinboySlick> I doubt the rails themselves are distorted.
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[15:04:20] <archivist> a level and a micrometer to make a clinometer then measure the amount needed to set the level to 0
[15:05:21] <archivist> although a collimator and mirror is the better method of the same technique
[15:06:14] <archivist> one measures the slope as you travel, you can then shim to get it level and straight
[15:06:29] <FinboySlick> archivist: In either case, I'm not in a situation where I can take the carriages off the rails. It'll also be a while before I can have a work surface that lends itself to using a level.
[15:06:54] <archivist> I understand :(
[15:07:45] <FinboySlick> archivist: If you ever come to eastern Quebec, bring your tools ;)
[15:08:28] <FinboySlick> archivist: Aren't you in the UK?
[15:08:31] <archivist> who is paying the air far!
[15:08:40] <archivist> fare
[15:09:21] <archivist> and I imagine the tools setting off the metal detectors
[15:11:19] <FinboySlick> Given the economic trends lately, it might still not be a bad move. I have a hunch that the EU is keen to give the UK a pretty hard economic time for not playing into their bullshit.
[15:12:07] <FinboySlick> Then again, you're screwed both ways :P
[15:12:13] <archivist> the economic times have not been nice to me
[15:12:46] <FinboySlick> I don't think they're nice to anyone.
[15:16:01] <r00t4rd3d> crack seems to be selling well.
[15:18:47] <archivist> I prefer to stay in a cold house than a warm prison
[15:19:10] <FinboySlick> archivist: Well said.
[15:23:27] <hdokes|werkin> does anyone know if there is a way to measure the torque required to turn the x and y axis of a manual mill?
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[15:23:52] <JT-Shop> torque wrench?
[15:23:58] <hdokes> that's a thought
[15:24:13] <FinboySlick> Do they go low enough?
[15:24:15] <hdokes> not sure how accurate that would be but don't know why it wouldn't work
[15:24:19] <JT-Shop> the real test is when your machining though
[15:24:43] <hdokes> FinboySlick... yeah... if you have one that measures in inch pounds as opposed to foot lbs
[15:24:53] <archivist> hdokes, dont forget dynamic loads
[15:25:01] <hdokes> indeed
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[15:25:31] <archivist> but servos are happy with short term overload
[15:25:35] <JT-Shop> LOL I love this reply to an ad I have "Does it has a VIN# and how many miles on it? consider this Craigslist
[15:25:35] <JT-Shop> ads sold to me...cause am coming to get it
[15:25:36] <JT-Shop> "
[15:25:49] <JT-Shop> first line of the ad has the milage
[15:26:21] <hdokes> makes ya wonder how one is capable of writing but not reading doesn't it
[15:26:29] <archivist> make sure he has not just printed the cash when he arrives
[15:26:37] <JT-Shop> it's an email harvesting scam
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[15:35:24] <pcw_home> You need torque for accelerating the axis rotating and linear mass,
[15:35:25] <pcw_home> overcoming friction, and supplying cutting forces
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[15:37:00] <jhdggddhdjd> Hi
[15:37:43] jhdggddhdjd is now known as JesusAlos
[15:37:51] <JesusAlos> Hi
[15:38:40] <JesusAlos> I need something in emc2
[15:39:18] <JesusAlos> I want to create a stop regulated time
[15:40:22] <JesusAlos> When emc trace a line, after pass to the next line do a stop
[15:41:48] <JesusAlos> The idea is create a stop time before pass the next step gcode
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[15:43:32] * archivist wonders if someone just read the docs :)
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[15:45:48] <JesusAlos-> Helloo
[15:46:06] <Tom_itx> someone enter this and fix it for me please: http://robocall.challenge.gov/rules
[15:46:18] <Tom_itx> I mean come up with a solution...
[15:46:45] <Tom_itx> pays 40k
[15:47:04] <JT-Shop> JesusAlos-: http://linuxcnc.org/docs/html/gcode/gcode.html#_g4_dwell_a_id_sec_g4_dwell_a
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[15:48:17] <Tom_itx> err 50k sry
[15:48:18] <JesusAlos-> Thank jt-shop.
[15:49:00] <JesusAlos-> Butt i need create a time bar in emc for regulate the time stop
[15:49:34] <JesusAlos-> You know?
[15:50:12] <andypugh> You want to be able to vary the pause time?
[15:50:28] <JesusAlos-> Yes
[15:52:07] <andypugh> GladeVCP or PyVCP control, then an M66 analogue-in
[15:52:08] <andypugh> http://www.linuxcnc.org/docs/html/gcode/m-code.html#sec:M66-Input-Control
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[16:07:18] <MattyMatt> Tom_itx sounds like an arms race. you could make $50k selling a speech synth that adapts to the recipient. step 1 say hello and wait for reply, step 2 deliver sales pitch in same tone of voice as recipient
[16:08:02] <JesusAlos-> But i need create a time stop bar like speed
[16:08:07] <MattyMatt> bonus points for recognising signs of bewildered old age in victim
[16:10:20] <MattyMatt> say("hi, I'm an old friend of "+deadrelative$(victim)+". He said he wanted to order our"+product$)
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[16:12:24] <andypugh> JesusAlos-: Do you need angular jog speed?
[16:12:37] <andypugh> You might be able to rename that widget.
[16:13:03] <andypugh> (You can add your own widgets with GladeVCP or PyVCP too)
[16:15:42] <andypugh> JesusAlos-: http://www.linuxcnc.org/docs/2.5/html/hal/pyvcp.html
[16:16:31] <andypugh> It is possible to do what you want. You need to do some reading of the docs though.
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[16:37:43] <IchGuckLive> hi all
[16:37:45] <skunkworks> yahoo searches kinda such now it seems.. If I do linuxcnc - then by date. I get discriptions that return linuxcnc but when you drill into the video - there is no reference to linuxcnc.
[16:37:49] <skunkworks> *youtube.
[16:37:53] <skunkworks> wowo
[16:38:22] <skunkworks> youtube searches kinda suck now it seems.. If I do linuxcnc - then by date. I get descriptions that return linuxcnc but when you drill into the video - there is no reference to linuxcnc.
[16:38:45] <Tom_itx> you may get more searching emc2
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[16:38:55] <Tom_itx> all search engines suck anymore
[16:39:12] <Tom_itx> too many metatags in pages to be effective now
[16:39:35] <IchGuckLive> i got a simple question if stepconf wizard does not put any numbers to the ini AXIS_x steplen,stepspace,dirhold,dirsetup,dirdilay is there a default in the linuxcnc
[16:40:28] <andypugh> skunkworks: -Mach3 ?
[16:40:36] <IchGuckLive> section 9.1.4 in hal manual
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[16:41:25] <andypugh> IchGuckLive: Probably. But the values are likely to be zero
[16:41:44] <IchGuckLive> andypugh: thanks
[16:41:56] <andypugh> Which is probably fine, as you are likely to get a 1-thread step and a 1-thread space
[16:42:28] <IchGuckLive> so i do the numbers from page one of stepconfwizard by hand here or are there a formal to calculate
[16:42:36] <IchGuckLive> Base+x
[16:43:17] <andypugh> The right values come from the drive manufacturer
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[16:43:28] <IchGuckLive> if i got 20000 base and 2000 dirhold i neet to go for 22000 i think
[16:43:51] <IchGuckLive> my drives are mutch faster then the BOB
[16:43:59] <andypugh> I _think_ that means that dirhold is irrelevant
[16:44:36] <IchGuckLive> Today i discovered that my 32MB g-code needs more speed
[16:45:01] <IchGuckLive> on straits JEH it works but on tiny length a crap
[16:45:32] <IchGuckLive> so i got alock into the ini and there is no number reflecting stepconf
[16:46:45] <IchGuckLive> to get a good acelleration at max velocity of 15mm/sec
[16:47:28] <IchGuckLive> so tiny lines are not knocking down the mashine speed even at G64 P0.1
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[16:52:02] <skunkworks> andypugh: isn't that (mach3) some things like this come back in the search.. http://www.youtube.com/watch?v=X6Ud73XIF78
[16:52:12] <owhite> greetings everyone. There used to be a program called emcsh, does anyone know what the new linuxcnc equivalent is?
[16:52:35] <skunkworks> owhite: Hi - how is the laser?
[16:53:29] <owhite> it is awesome. My laser head died, an unfortunate loss because new ones are $28,000. But I found a used one, with zero hours, that I bought for $1700 and some artwork.
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[16:54:09] <owhite> Now I'm upgrading to linuxcnc 2.5, and working out various bugs.
[16:54:24] <owhite> my previous computer was like 12 years old.
[16:55:39] <andypugh> owhite: emcsh is still in the source code
[16:55:56] <owhite> hm. says command not found.
[16:56:21] <owhite> ...lookin' around.
[16:56:35] <andypugh> linuxcncrsh is the new emcrsh
[16:57:07] <Tom_itx> wonder how many years the namechange will plague us
[16:57:20] <owhite> excellent, thanks. I guess I should have known to at least look in /usr/bin/linux*
[16:57:46] <Tom_itx> what does it do?
[16:58:25] <owhite> Tom_itx: not that it makes any difference in terms of creating problems, but I'm glad the switch was made. The software has advanced so far from when it was originally created at NIST.
[16:58:33] <IchGuckLive> skunkworks: they use emc2 linuxcnc in thr tabs
[16:58:34] <andypugh> lets you control the running linuxCNC instance from the command line or a script
[16:58:44] <Tom_itx> owhite, i remember back then
[16:59:30] <owhite> Tom_itx: :-)
[16:59:40] <Tom_itx> i wasn't active but i followed it
[17:00:15] <IchGuckLive> andypugh: http://www.youtube.com/watch?v=4b_BxPDXY9k
[17:00:31] <IchGuckLive> its a UREOL test at the Styrocut at 800mm/min
[17:00:54] <owhite> I think I recall early on that NIST was criticized for writing it, on the grounds that the government should not be competing with the private domain. I guess there some commercial vendors that didnt appreciate the feds making freeware.
[17:01:43] <Tom_itx> heh
[17:01:56] <Tom_itx> it may have never gotten organized otherwise
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[17:02:22] <owhite> Yep. Best move Jimmy Carter ever made. Or something :-)
[17:02:42] <Tom_itx> maybe he wanted to automate his peanut farm
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[17:04:11] <owhite> So not that anyone should really care, but I came up with a feature that I think is pretty cool. I made a python user space component that performs a call to an external program. In my case it is used to call a program that fetches a cad file, and generates the G-code to run my laser.
[17:04:27] <IchGuckLive> owhite: why not to the master relese
[17:04:57] <owhite> I think the interesting part is it that it handles a fork. It takes a while for my tool path program to run. So it handles that 10 second or so pause more elegantly.
[17:05:05] <owhite> IchGuckLive: in what way?
[17:05:19] <IchGuckLive> http://buildbot.linuxcnc.org/ put this pps you need into your packetmanager
[17:05:50] <IchGuckLive> owhite: it woudt give you the newest fetures
[17:06:03] <IchGuckLive> better performence also
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[17:06:46] <owhite> I'm sorry I still dont follow. Are you suggesting that I should get a more current copy of linuxcnc or that I should post my user space component to the code repository?
[17:07:19] <IchGuckLive> up to you
[17:07:34] <IchGuckLive> 2.6.2 is the newest in the master
[17:07:41] <owhite> I see.
[17:07:56] <IchGuckLive> depends on what you are doing
[17:08:07] <IchGuckLive> sculp ting is better with the newest
[17:08:47] <owhite> do people know of another approach to launch an external program when running axis? I tied my user space component to a button in pyvcp.
[17:09:02] <owhite> ...I thought that worked pretty nicely.
[17:09:38] <IchGuckLive> user space component does what
[17:10:43] <andypugh> owhite: I think you just need to set up a filter.
[17:11:31] <andypugh> Look at how opening a jpg in Axis can automatically open image2gcode and pass the G-code to LinuxCNC
[17:12:10] <owhite> andypugh: okay, but would that involve altering the axis code?
[17:12:32] <owhite> my component: http://pastebin.com/aj4TmHmy if anyone is interested.
[17:12:37] <andypugh> No, it's all automagic: http://www.linuxcnc.org/docs/html/config/ini_config.html#_filter_section_a_id_sub_filter_section_a
[17:13:32] <owhite> neat. Looks like just what I needed. do you figure it would fork off if the program took some number of seconds to run?
[17:14:31] <owhite> oh wow that has a progress bar and everything.
[17:14:41] <owhite> Shoot. So much for my component. :-)
[17:16:28] <IchGuckLive> owhite: what is your component about
[17:19:10] <owhite> IchGuckLive: take a look at the pastebin: http://pastebin.com/aj4TmHmy the component makes a call to an external program which generates gcode. I thought it was pretty cool because it handles forking the process, and to launch it I could attach the input pin to a button created in pyvcp. But, turns out the suggestion andypugh gave to me would work as well.
[17:19:34] <owhite> andypugh: the document doesnt show how it would be launched in axis. Do you know?
[17:20:08] <andypugh> I think it just happens. (and axis probably waits while it is doing it).
[17:20:23] <andypugh> I haven't actually tried it.
[17:20:54] <owhite> wow. I guess I should have known that feature would already be there. amazing.
[17:21:28] <andypugh> Have a play with the sim/axis configs, they include the option.
[17:22:26] <IchGuckLive> owhite: did you see this -> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Simple_LinuxCNC_G-Code_Generators
[17:22:46] <owhite> thanks I was just looking at it.
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[17:23:20] <andypugh> If you look, axis already lists jpg and gif as "machinable files" in the file open dialog. That's due to the input filters
[17:24:35] <owhite> oh do you imagine if it sees .jpg as a file extension it automatically processes it through a filter?
[17:24:56] <IchGuckLive> i see alot took the advantige to generate some nice python g-code genrators now 20 in there
[17:26:22] <owhite> ...looks like the answer to my question is yes, http://www.linuxcnc.org/docs/html/config/ini_config.html#_filter_section_a_id_sub_filter_section_a talks about PROGRAM_EXTENSIONS.
[17:26:34] <owhite> I'm starting to get it. Such a great system.
[17:27:26] <owhite> ...special thanks to Jimmy Carter.
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[17:37:08] <IchGuckLive> im off
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[17:48:17] <owhite> thanks everyone. heading out.
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[18:42:04] <r00t4rd3d> when i click open file in linuxcnc, is there a way to specify where it opens too?
[18:44:36] <r00t4rd3d> if I wanted to change it from opening linuxcnc/nc_files to my desktop, how would I do that?
[19:02:32] <andypugh> In Axis?
[19:04:25] <andypugh> Isn't that set by [DISPLAY]PROGRAM_PREFIX in the INI?
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[19:11:48] <andypugh> alex_joni: Not wanting to be a pain, but is it possible to add a comment to the sign-up page to the effect that the three lesvels of security are because we were getting 1000 spammers a day? It just looks a bit excessive if you don't know that.
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[21:09:22] <DJ9DJ> gn8
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[21:22:44] <JT-Shop> my neighbor was by the other day and was eyeing my 300lb grizzly anvil and said "how much does it weigh" without batting an eye I said "it's stamped on the bottom"
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[21:28:10] <mrsun> =)
[21:29:37] <andypugh> I guess that is close to the limits of liftable to find out.
[21:30:55] <JT-Shop> I can only pick up one end and scoot it around
[21:31:18] <andypugh> I clearly don't understand strstr http://codepad.org/3g614WB0
[21:32:15] <JT-Shop> what is strstr?
[21:33:15] <DaViruz> andypugh: for one thing, the search string comes last
[21:34:16] <andypugh> That is part of what I was messing about in codepad to be sure about
[21:34:37] <DaViruz> and sprintf expects a pointer to a target
[21:34:45] <DaViruz> before the format string
[21:35:05] <DaViruz> (sprintf "prints to a string", printf prints to screen)
[21:35:19] <andypugh> Doh!
[21:35:56] <andypugh> I never use printf and friends, it's always rtapi_ptint...
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[21:38:12] <andypugh> Slot cars have got a bit fast. I blame rare-earth magnets" http://www.youtube.com/watch?v=EcgvFXe8HCo
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[22:40:29] <Tom_itx> andypugh, they were popular here a few years back but now have died off again
[22:41:39] <archivist> I had a request for a slot car gear but he ran when I said my prototype took a day to make
[22:42:13] <Tom_itx> some guys would glue the track so much they'd end up burning up their motors
[22:43:07] <Tom_itx> that's a nice lookin track though
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[23:06:57] <FinboySlick> Anyone here messed with comodity laser diodes (think DVD burner)?
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[23:14:22] hdokes|werkin is now known as hdokes
[23:18:13] <FinboySlick> I'm wondering well they resist being overloaded for very short durations.
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[23:25:31] <JesusAlos> Hello people
[23:26:02] <jdh> hiya Jesus
[23:28:01] <Theta9> FinboySlick, unlikely
[23:28:45] <Theta9> FinboySlick, even if you provide adequate heat sinking, the thermal load of the case is probably not sufficient to cool the die in situations of overload
[23:29:50] <FinboySlick> Theta: OK. I'd like to build something that indicates a spot (low power) then zaps it. Anything that'd light a match is probably strong enough for me.
[23:30:14] <Theta9> there are lasers that can do that at regular power no?
[23:30:25] <Theta9> the bluray lasers for instance
[23:30:28] <andypugh> They cost more
[23:30:38] <Theta9> what? 40$?
[23:30:46] <Theta9> for 60$ you can get a bluray player
[23:31:08] <FinboySlick> Theta9: Well, this is just a home hack kind of deal... I'm not sure how much I want to invest in it.
[23:31:12] <andypugh> $40 might be a lot for some people and some projects. I
[23:31:20] <pcw_home> Writer diodes are the bright ones
[23:31:30] <Theta9> andypugh, you're right
[23:31:48] <FinboySlick> $40 is mostly just a lot for what I want to do.
[23:32:24] <FinboySlick> I have a dvd burner diode lying around though.
[23:33:01] <pcw_home> those are maybe 200 mW (enough to cause eye damage)
[23:33:01] <FinboySlick> I'm teaching myself a bit of electronics and I wanted to design it a bit like a camera flash.
[23:34:19] <FinboySlick> pcw_home: Mine looks like it needs a lense though.
[23:34:33] <pcw_home> They all do
[23:35:14] <FinboySlick> I assume I'd get that in a regular laser pointer.
[23:35:46] <pcw_home> (you will if you steal a lase pointer collimating lense)
[23:37:15] <pcw_home> the actual laser source size is so small that the beam is quite broad due to diffraction
[23:37:40] <andypugh> I suspect that blu-ray have focussing, not collimating, lenses
[23:38:33] <FinboySlick> I think I have an old laser pointer lying around.
[23:38:40] <pcw_home> Yes for a spot a focusing lense is what you want
[23:39:46] <pcw_home> I think the collimators are basically Galilean telescopes
[23:40:02] <FinboySlick> pcw_home: For distance though, collimating is the idea?
[23:40:10] <pcw_home> yes
[23:40:34] <pcw_home> by expanding the beam you reduce the divergence
[23:40:39] <FinboySlick> I probably need between 3 and 10 feet.
[23:40:55] <r00t4rd3d> http://imgur.com/a/krr3B
[23:41:12] <r00t4rd3d> check out what that dude did
[23:43:19] <FinboySlick> Fancy.
[23:45:37] <Theta9> 0 stray cats were added.
[23:45:40] <Theta9> lol what is that
[23:45:58] <andypugh> r00t4rd3d: It deserves a better pointer
[23:46:27] <r00t4rd3d> anyone ever try to CNC a pumpkin?
[23:47:27] <pcw_home> Its been done but to do it nicely you would want to map the surface first
[23:48:58] <FinboySlick> Plus an ultra sound map of shell thickness!
[23:49:50] hdokes is now known as hdokes|werkin
[23:52:18] <andypugh> You mean cut a pumpkin on a CNC, or make a CNC controlled pumpkin?
[23:52:38] <r00t4rd3d> http://www.youtube.com/watch?feature=player_embedded&v=hqxzSGrXlFA
[23:52:51] <r00t4rd3d> check out the air vise about 1 minute in
[23:53:05] <r00t4rd3d> 1:16