#linuxcnc | Logs for 2012-08-31

[00:56:47] <stochastic00> Anyone else encounter positional drift if and only if probing?
[00:58:54] <r00t4rd3d> only when there is an alien involved.
[00:59:23] <stochastic00> :)
[00:59:52] <r00t4rd3d> not many people around this time of night
[00:59:59] <r00t4rd3d> or awake i should say
[01:03:37] <r00t4rd3d> ask again in about 7 hours :D
[01:26:26] <Loetmichel> mornin'
[01:32:41] <theos> o/
[01:34:32] <psha[work]> r00t4rd3d: why alien? there is part of the world called 'europe' and 'asia'
[01:34:46] <psha[work]> and there are people!
[02:08:14] <DJ9DJ> moin
[03:09:39] <v0idexp> Hi all again!
[03:11:00] <v0idexp> Continuing the question about the spindle... I have a stepper drive and want to use it as spindle. In PNCConf I have 3 axes (XYZ) configured, and they're working well. What does not is the spindle...
[03:11:22] <v0idexp> Have an 7i43-4 mesa board
[03:12:05] <v0idexp> Another question... what the A axis is supposed to be used for?
[03:18:41] <v0idexp> What I have is a motor which moves a piston up-down at certain velocity. So, the only thing I need is to let the piston move down until a limit is triggered and then move it up at different speed, until the upper limit is triggered
[03:20:19] <v0idexp> Debugging the out pins with oscilloscope says that XYZ axes are working (there's a good signal and direction is working well). But if I try to move the spindle, it does nothing.
[03:22:10] <v0idexp> And it seems that AXIS does nothing, I mean, I press the CW/CCW rounded arrows, it just checks the 'brake' label and nothing more
[03:31:12] <v0idexp> Mmmh, is the motion.spindle-on pin an external pin? I mean, I have to supply a HIGH level to it or it is a virtual pin?
[03:38:39] <archivist> do you really want to treat the piston as linear
[03:39:00] <archivist> A is by convention a rotary axis
[03:43:41] <v0idexp> what you mean by linear?
[03:44:26] <archivist> moves in a line, does not go around an axis
[03:46:35] <v0idexp> yes, I suppose, because I don't want to specify the distance at which it moves, only the speed
[03:49:57] <archivist> but driven from a crank?
[03:50:52] <v0idexp> no, only from software
[03:51:17] <archivist> hmm, what moves the piston physically
[03:51:23] <v0idexp> a step drive
[03:51:34] <archivist> grr, how
[03:51:54] <v0idexp> the piston is mounted on a screw
[03:52:21] <archivist> so which axis is that
[03:53:33] <archivist> or were you attempting to use the spindle out
[03:53:52] <v0idexp> it's not an axis, I mean, I already have 3 axes, and this one is supposed to be commanded with On/Off-like NGC commands. Spindle, I guess. (sorry for my dumb replies, I'm not english :/)
[03:54:44] <v0idexp> for example, PISTON_DRIVE_CW.... ALL WORK HERE ... PISTON_DRIVE_STOP
[03:56:12] <archivist> if you use a linear axis like U then you can set direction,speed etc in the same gcode and less need for the switches
[03:56:43] <v0idexp> well, this seems is what I need
[03:56:49] <v0idexp> How can I setup the U axis?
[03:57:03] <v0idexp> and in what it differs from normal XYZ axes?
[03:57:35] <archivist> does not differ in your case
[03:58:36] <archivist> what is the piston supplying
[03:58:50] <archivist> glue?
[03:59:00] <v0idexp> ink
[03:59:25] <v0idexp> but is there a command that does motion without having the position passed?
[03:59:35] <v0idexp> I mean, if I have a normal X axis
[04:00:00] <v0idexp> which command makes an X motion in (for example) positive direction at speed, say, 1000?
[04:00:49] <archivist> g0 x1000 F20
[04:01:02] <archivist> oops g1 x1000 f20
[04:01:17] <v0idexp> but x1000 is actually the distance
[04:01:18] <archivist> g0 is as fast as possible
[04:01:42] <archivist> F1000 would be a speed then
[04:01:56] <v0idexp> I have no way to know the distance ahead
[04:02:26] <v0idexp> I mean, I'm feeding ink by pushing the piston until the working cycle has not finished
[04:02:59] <v0idexp> with g0/g1 I have to pass the distance the piston has to travel
[04:03:07] <v0idexp> and there's no way to know it ahead of time
[04:04:26] <archivist> painting lines on some material?
[04:05:05] <archivist> I was assuming a paint pot filling process
[04:05:39] <v0idexp> yes, painting on a plane
[04:06:30] <v0idexp> XY moves the head, Z raises it up/down and the WTF axis has to feed ink by pressing a piston when the head is down (so we're painting)
[04:08:37] <archivist> I would just output a level start pump, and read back an line on a pressure switch
[04:09:08] <archivist> and why not 5 axis as planes are shaped
[04:12:04] <v0idexp> and it is possible to do with a stepper motor?
[04:12:37] <archivist> your real problem getting a stepper running from the spindle signal to drive the stepper from the spindle function, I dont know enough about the mesa card to do that connection
[04:14:30] <v0idexp> exactly, that's my problem... but a part from the mesa card, how it would be set up?
[04:16:23] <micges> did you get motion.spindle-on true?
[04:17:49] <archivist> and did you set a speed
[04:17:55] <v0idexp> no :( can't manage to get it true...
[04:19:48] <micges> run emc status
[04:20:22] <micges> menu machine->linuxcnc status
[04:20:36] <v0idexp> ok
[04:20:39] <v0idexp> done
[04:21:04] <micges> scroll to spindle* part and see changes after F9
[04:21:23] <v0idexp> nothing changes
[04:22:08] <micges> take a screen shot
[04:23:23] <v0idexp> ok
[04:23:57] <micges> can I see it? :)
[04:24:03] <v0idexp> wait a sec ;)
[04:25:12] <micges> k
[04:29:37] <v0idexp> http://postimage.org/image/njw87fuh5/8beea827/
[04:29:40] <v0idexp> sorry for waiting
[04:35:14] <micges> v0idexp: make backup of your hal file and try to run this one: http://pastebin.com/dciDeErW
[04:35:24] <micges> and same test with emc status
[04:35:58] <v0idexp> sure
[04:37:40] <v0idexp> same thing
[04:42:38] <v0idexp> made a video, soon i'll post al ink
[04:42:47] <micges> do you have another hal files in config dir?
[04:47:57] <v0idexp> yes
[04:48:18] <v0idexp> custom.hal, custom_gvcp.hal, custom_postgui.hal, postgui_call_list.hal, shutdown.hal,
[04:48:24] <v0idexp> no one created by me
[04:50:11] <micges> it seems to me that this is pncconf bug
[04:52:50] <v0idexp> using 2.6.0 (git)
[04:53:14] <v0idexp> but basically, configuration seems to be good, right?
[04:53:49] <micges> basically yes
[04:53:57] <micges> but it doesn't work
[04:55:02] <v0idexp> I'll try the stable 2.5.1 release
[04:59:57] <v0idexp> http://www.mediafire.com/?c8psfc8prfq0ta8
[05:16:26] <v0idexp> 2.5.1
[05:16:30] <v0idexp> works
[05:16:32] <v0idexp> :)
[05:16:45] <v0idexp> at least seems to work in axis, now I'll test with oscilloscope the output pins
[05:17:09] <v0idexp> thank you for your help
[05:17:22] <v0idexp> so, it is a bug
[05:17:32] <v0idexp> a kind of regression
[05:19:05] <micges> cool
[05:21:59] <micges> please report this on mailing list
[05:22:05] <micges> or http://sourceforge.net/tracker/?group_id=6744&atid=106744\
[05:39:08] <v0idexp> excellent, tested with oscilloscope, everything works :)
[05:39:15] <v0idexp> sure, i'll do it :)
[05:49:20] <v0idexp> ok, confirm that it works. step 2: can I configure 2 spindles? :)
[06:31:59] <r00t4rd3d> http://i.imgur.com/Fcu4F.jpg
[06:46:29] <cncbasher_> i'll pass on that ,,, lol best person i'd say is micheal to point you in the right direction on that one
[06:46:58] <cncbasher_> but thats the joy's of emc it's all scriptable ...
[06:47:35] <cncbasher_> it's the secret of finding how to script it thats elusive at times ..
[06:48:20] <cncbasher_> but micheals done that part so he's know how to script it
[06:48:43] <cncbasher_> glad your on a winning streak glad to know
[07:24:24] <WillenCMD> Can i launch rip-environment from inside a script?
[07:24:53] <WillenCMD> i tried python's subprocess, and it doesn't seem to work
[07:26:21] <jthornton> what are you trying to do?
[07:27:52] <WillenCMD> well i have wrote several gui's and halcomponents, that run using halrun... but in order to use the installed hal component i have to rip-environment first
[07:28:37] <WillenCMD> this isn't acceptable when i distribute these machines, i would like them to boot straight into the gui
[07:28:50] <jthornton> that doesn't make sense, the installed hal component is the one you get by default
[07:29:27] <WillenCMD> when you write your own, and install it. It won't work unless i use rip-environment
[07:29:38] <jthornton> yes it does
[07:29:43] <WillenCMD> unless im installing it incorrectly
[07:29:50] <jthornton> that might be the case
[07:30:03] <jthornton> sudo comp --install my.comp
[07:30:23] <WillenCMD> that's exactly what i do
[07:32:30] <jthornton> and when you run your gui with linuxcnc path to my ini your load component line throws an error?
[07:36:59] <WillenCMD> no linuxcnc
[07:37:05] <WillenCMD> its simply a hal machine
[07:37:08] <jthornton> and the my.ko file should be in usr/realtime-2.6.32-122-rtai/modules/linuxcnc
[07:37:46] <jthornton> hmmm
[07:37:47] <WillenCMD> basically using gladevcp for call backs and handling the gui, and writing halcomp's to control these specific machines
[07:38:08] <WillenCMD> to start the machine, its simply halrun mymachine.hal
[07:39:16] <WillenCMD> These are task oriented machines, i.e. Gear Shaping, Hob sharpening, Diamond Cutoff Machine, Drill/End-mill SHarpener
[07:39:32] <WillenCMD> so its very conversational
[07:41:01] <jthornton> something like this thread? http://linuxcnc.org/index.php/english/component/kunena/?func=view&catid=48&id=23317
[07:42:13] <jthornton> maybe you just need to build your comp and put it in the same directory as your GUI
[07:42:31] <WillenCMD> the .comp file is placed into the gui directory
[07:42:49] <jthornton> you still have to run it through comp
[07:43:15] <jthornton> comp --compile rtexample.comp
[07:43:25] <WillenCMD> okay, i'll try that
[07:43:27] <jthornton> http://linuxcnc.org/docs/html/hal/comp.html#_compiling
[07:44:02] * jthornton hums hi ho... hi ho... it's off to work I go...
[07:44:13] <WillenCMD> im already there
[07:45:19] <jdh> me too.
[07:46:34] <archivist> what is this work you speak of
[07:49:51] <WillenCMD> its more play than work right now, because of all the custom work im doing
[07:51:09] <archivist> I was supposed to be working today, customer failure!
[08:37:21] <WillenCMD> how hard would it be to strip the linuxcnc-dev of all things not related to hal or its components?
[08:38:32] <WillenCMD> modify the make/config file i would assume?
[08:45:24] <mk0> what is run-in-place? google does not answer
[08:53:42] <cpresser> mk0: not installing the software (eg. copy binarys to /usr/bin ...)
[08:54:12] <mk0> like opera for usb?
[08:54:55] * cpresser does not know opera for usb
[08:55:01] <cpresser> but it sounds similar
[08:55:10] <cpresser> (like a similar concept)
[09:16:26] <v0idexp> Ok, for all those guys who followed with pain my troubles, just solved everything:
[09:16:35] <v0idexp> 1) connected two stepper drives as spindles
[09:17:25] <v0idexp> 2) created a custom NGC command which allows working with spindles with ease, as it is m103 p1 q200, which lets the spindle 1 rotate in cw with 200 RPM
[09:17:57] <v0idexp> the main problem was the bug in LinuxCNC 2.6.0~pre, installing 2.5.1 stable made the spindle work
[09:21:02] <psha[work]> sounds like regression
[09:21:03] <psha[work]> bad
[09:21:11] <v0idexp> yep
[09:21:16] <cradek> is there a bug report?
[09:21:31] <v0idexp> when I'll find a sec, i'll report it
[09:21:38] <psha[work]> don't forget :)
[11:24:45] <skunkworks__> http://groups.yahoo.com/group/mach1mach2cnc/message/136703
[11:25:22] <Connor> skunkworks__: What are we looking at?
[11:37:57] <jdh> connor: mach finally gets run-from-here?
[11:38:12] <jdh> seems haphazard at best for any mildly involved gcode file
[11:40:31] <Connor> I've had issues with LinuxEMC run from here.. Like no realizing that the X was set some steps ago... and it just moves to the Y and starts running ..
[11:40:43] <Connor> but, that was my own stupidity. :)
[11:42:13] <r00t4rd3d> http://i.imgur.com/XQSvo.jpg
[11:42:26] <r00t4rd3d> still need to clean up parts of it and do a second coat
[11:47:42] <r00t4rd3d> and on a side note, I fucking hate football
[12:00:41] <L84Supper> did anyone find a laser cutter from China that is reliable? I'm looking for something to cut 1/8" (~3mm) chipboard
[12:02:36] <Jymmm> there are a few good ones, but what size
[12:05:27] <L84Supper> whats the size of a typical board game? ~18" x 18"
[12:05:27] <Jymmm> and by chipboard do you mean the cardboard found on the back of yellow legal pads, or the stuff found on the back of cheap furniture
[12:06:12] <Jymmm> ok, cardboard. You need shapes/holes cut into it?
[12:06:25] <L84Supper> no
[12:06:39] <L84Supper> I mean yes
[12:06:45] <Jymmm> you just need the game board sized pieces?
[12:07:16] <L84Supper> up to game board size, also for game pieces
[12:07:25] <Jymmm> custom shaped holes?
[12:07:36] <L84Supper> yes
[12:07:53] <Jymmm> how elaborate?
[12:08:18] <r00t4rd3d> just slap a laser on your cnc router
[12:08:55] <r00t4rd3d> if you have one
[12:09:07] <L84Supper> r00t4rd3d, yeah, this is for someone who has only game designs
[12:09:42] <Jymmm> L84Supper: are these one off prototypes or production?
[12:09:43] <r00t4rd3d> tell them not to waste their money, there is a monopoly in board games.
[12:09:52] <L84Supper> the quotes from printers and cutting services I saw were pretty high
[12:10:15] <L84Supper> r00t4rd3d, pun intended?
[12:10:46] <Jymmm> L84Supper: how many holes? and bindery services shouldn't be that high
[12:11:00] <L84Supper> the quotes were so high it looks like it might be better for them to start making games in house
[12:11:19] <Jymmm> qty?
[12:11:41] <L84Supper> these are low volume designer games 500-5K pcs
[12:12:30] <L84Supper> also custom decks of playing cards
[12:13:14] <Jymmm> L84Supper: The issue is with 1/8" chipboard it's real dusty when cut, only semi-dense, and catches fire easily. So trying to laser cut (lets say) 3 stacked at a time might be an issue.
[12:13:38] <Jymmm> Plus the kerf is going to get wider too.
[12:13:46] <r00t4rd3d> you might burn through your profits
[12:13:59] <L84Supper> Jymmm, yes, there are other low cost substrates I can see steering them towards
[12:14:04] <IchGuckLive> hi all
[12:14:16] <IchGuckLive> Jymmm: rain in the desert
[12:14:48] <Jymmm> L84Supper: Even at 500+, I'd talk to a paper mill, not a printer. They have the sheers/drills for that sorta thing.
[12:15:29] <Jymmm> L84Supper: You could consider waterjet too
[12:15:54] <IchGuckLive> waterjet 500mm ?
[12:16:47] <Jymmm> I've seen waterjet used to cut pre-packaged sandwiches, cakes, pies, etc
[12:17:28] <IchGuckLive> agree on that also foam at 1m
[12:20:07] <Jymmm> L84Supper: laser might also char the cut edges, usually happens on wood, more so on species with higher sap content.
[12:21:18] <Jymmm> L84Supper: But, depending on the game design/esthetics, might be able to do plastic sheet instead.
[12:22:05] <ScribbleJ> L84Supper, I have a hong kong laser that has been very good to me.
[12:22:16] <ScribbleJ> L84Supper, how much do you want to spend?
[12:23:40] <IchGuckLive> http://www.ustream.tv/burningman
[12:23:52] <L84Supper> ScribbleJ, how much life do you think you can get out of your unit? If you were cutting <1" pieces 24/7 out of chipboard or vinyl
[12:24:33] <ScribbleJ> Well, L84Supper, a laser that'll cut 1" of anything is going to set you back a lot. This one has trouble with anything much over 1/4".
[12:24:39] <IchGuckLive> 24/7 needs good constant cooling
[12:24:54] <L84Supper> ScribbleJ, thickness is ~1/8"
[12:24:56] <ScribbleJ> However, the one I have can run pretty continuously, with watercooling.
[12:25:02] <ScribbleJ> Here's theone I have:
[12:25:18] <IchGuckLive> life is 2000h max
[12:25:23] <ScribbleJ> http://www.ebay.com/itm/CO2-LASER-ENGRAVING-MACHINE-ENGRAVER-CUTTER-AUXILIARY-ROTARY-DEVICE-50W-NEW-w-/260919607158?pt=LH_DefaultDomain_0&hash=item3cc0053f76
[12:25:28] <L84Supper> I was thinking of your laser cutter after your rave reviews of it
[12:25:49] <ScribbleJ> yeah, you'll have to replace the laser tube every 6-12 months if you run it all the time, that's part of the maintenence. I haven't had to do that yet.
[12:26:05] <ScribbleJ> New tube is like $300 - ish. So not bad.
[12:26:18] <L84Supper> how is it at engraving wood?
[12:26:35] <L84Supper> that could be a nice alternative
[12:27:02] <L84Supper> custom wood game pieces
[12:27:21] <ScribbleJ> IT's quite excellent, the laser power is consistent so with some tuning and some quality wood, you can engrave to a consistent depth. Of course it's easier to get good consistency out of a more homogenous material, like acrylic or whatever.
[12:27:37] <L84Supper> for $3000 thats not bad
[12:28:01] <ScribbleJ> I've found the 300x500mm bed size limiting a few times, but it's hard to find anything larger that's not MUCH more expensive.
[12:28:10] <ScribbleJ> And 300x500 is pretty generous anyhow.
[12:28:34] <L84Supper> board games are that size or smaller, so they could cut the boards and the pieces
[12:29:19] <ScribbleJ> Oh sure, it would do fine with a board game. Iv'e been considering lasercutting some interlocking catan peices
[12:29:25] <Jymmm> ScribbleJ: Do you have photos of the internals of your laser? tube, electronics, working area, etc?
[12:29:27] <ScribbleJ> Since our cats just love to fuck up a game of catan.
[12:29:33] <ScribbleJ> Jymmm, some, yes.... hang on...
[12:29:35] <L84Supper> unless I find some niche game makers in China
[12:29:55] <ScribbleJ> http://www.flickr.com/photos/13723140@N04/sets/72157629705782797/ Try here, Jymm.
[12:31:12] <Jymmm> ScribbleJ: USB dongle?
[12:31:32] <ScribbleJ> It connects to the computer via USB, there's no sort of dongle.
[12:32:01] <Jymmm> ScribbleJ: auto focus?
[12:32:06] <ScribbleJ> No, only manual.
[12:32:19] <ScribbleJ> There's a big hand-crank to move the Z
[12:32:25] <Jymmm> ScribbleJ: manual crank, or push button?
[12:32:27] <Jymmm> ok
[12:32:36] <ScribbleJ> It would be pretty easy to replace that with a motor, I think.
[12:32:37] <L84Supper> blank playing cards + UV inkjet can easily be used to make the custom decks of cards
[12:32:53] <ScribbleJ> http://www.flickr.com/photos/13723140@N04/7031101243/in/set-72157629705782797 hand crank
[12:32:59] <ScribbleJ> "UP AND DOWN SWITCH"
[12:33:06] <ScribbleJ> The engrish in the printer and the manual entertained me for months.
[12:33:36] <cpresser> ScribbleJ: does it have a pause-button?
[12:33:41] <ScribbleJ> Completely unrelated, I just built this thing: http://www.youtube.com/watch?v=BRiHelJOnFU
[12:34:06] <cpresser> my el-cheapo-china-laser has a pause-bvutton-bug: it resumes cutting after pause as soon as you open the cover
[12:34:07] <ScribbleJ> cpresser, yes, it does... the software and firmware are both very full featured. You can adjust speeds and laser power on the machine, too, on the fly.
[12:34:24] <ScribbleJ> And it can store programs to run internally, and just is generally pleasant to use.
[12:34:48] <ScribbleJ> This one has no lid switch AFAIK so that won't happen... and it'll happily burn your eyes out if you decide to open the lid while it's running.
[12:36:03] <cpresser> i did some security-improvements on my machine. fixed the switch; removed the powder-coat from the cutting table (those fools used a coating which burns like hell as soon as the laser hits it)
[12:36:13] <cpresser> and i bought a co2 extenguisher :)
[12:36:20] <Jymmm> Heh, mine has a open lid bug too, not as bad as cpresser's though.... it'll kill the laser but the motion keeps going. You have to hit the PAUSE button instead.
[12:36:25] <Jymmm> cpresser: Nitrogen
[12:36:41] <Jymmm> flood the compartment =)
[12:36:52] <Jymmm> no condensation
[12:37:56] <cpresser> the only reason why i didnt redo the control so far is the engraving function.
[12:38:19] <Jymmm> cpresser: But anythign is better than nothing at all... http://i37.tinypic.com/sqh6r7.jpg
[12:38:21] <cpresser> there is the hal-streamer approch, but so far its not nicely integrated into some CAM :/
[12:38:42] <cpresser> Jymmm: ugly
[12:38:52] <L84Supper> I hate it when that happens
[12:39:15] <Jymmm> $30K USD and the insurance company would not replace it
[12:39:31] <L84Supper> what was it cutting?
[12:40:27] <Jymmm> dont recall, but she had been cutting like 50 of them so far with no problems, then had to walk away to answer the door. NEVER ALK AWAY FROM A LASER hit the pause button
[12:41:10] <Jymmm> http://i36.tinypic.com/27y5n2d.jpg
[12:41:12] <ScribbleJ> I saw that, yea
[12:41:23] <ScribbleJ> I had a fire start in mine while cutting some birch plywood
[12:42:09] <cpresser> i am still wondering how i am going to set up mine in the new shop. i want it in a small room, so i can easly vent out the fumes.. but i also need to watch it
[12:42:30] <L84Supper> ScribbleJ, whats the cutting rate for something 1/8" plastic or chipboard-like
[12:42:32] <Jymmm> cpresser: you have an air scrubber?
[12:42:37] <cpresser> cutting colored acrylic doesnt smell good
[12:42:51] <ScribbleJ> But I was watching it like a responsible operator, so I actually got my camera, and took a picture, and then shut it down and pulled the wood out by hand before it got too bad.
[12:43:03] <cpresser> Jymmm: no, i just have a large 'fan' which sucks air out of the laser-compartment and blows it outside
[12:43:24] <ScribbleJ> L84Supper, at 1/8" I've had good luck at about 20mm/sec, maybe a bit more even. 1/4" I usually do around 10.
[12:43:48] * cpresser uses similar feed-rates
[12:43:59] <Jymmm> cpresser: I/most use a dust collector, not a "fan". Then hit a hydroponics store and get a 6" carbon filter
[12:44:21] <jdh> and some fertilizer for your "herbs"
[12:44:55] <ScribbleJ> http://www.flickr.com/photos/13723140@N04/6903776150/in/photostream not very dramatic photos of my fire.
[12:44:56] <Jymmm> cpresser: like this http://www.htgsupply.com/Product-A-GrowBright-Pure-Flow-6-Tall-Boy-Filter.asp
[12:45:03] <ScribbleJ> http://www.flickr.com/photos/13723140@N04/6903776152/in/photostream/
[12:45:57] <Jymmm> ScribbleJ: do you have photos of your cutting grid? I want to see how it's attached to it's frame
[12:46:05] <ScribbleJ> That's an interesting product. I'd assume that's for people who's neighbors cannot abide the smell of cilantro.
[12:46:31] <Jymmm> ScribbleJ: Yes, but works great for laser work
[12:46:38] <ScribbleJ> Jymmm, it's not, the laser comes with a flat, plain bed. I cut some aluminum honeycomb and just dropped it in there myself, will replace it with something nicer eventually.
[12:46:44] <cpresser> thanks for the filter-tip, Jymmm. ill see what i can find in the store
[12:47:10] <Jymmm> cpresser: Get at least 6" wide, even if your laser is 4"
[12:47:31] <Jymmm> cpresser: It'll reduce the the load on the blower/fan
[12:47:52] <Jymmm> cpresser: also, try to use 6"+ duct
[12:47:55] <cpresser> how often do you need to replace the filter-substrate?
[12:48:05] <Jymmm> depends on your usage
[12:48:21] <Jymmm> weight it, and when the weight doubles, replace it
[12:48:41] <Jymmm> or almost double
[12:50:00] <ScribbleJ> http://www.flickr.com/photos/13723140@N04/7080853883/in/photostream I'm a terrible hack.
[12:50:24] <Jymmm> at least you didnt use 4"
[12:50:28] <jdh> I'd suggest some black or red duct tape. Get some contrast going.
[12:50:48] <ScribbleJ> Haha
[12:51:06] <ScribbleJ> Three out of four times I forget to turn it on until my garage is full of that molten acrylic smell.
[12:51:56] <Jymmm> cpresser: just others, I like the perf material here http://www.ehydroponics.com/phat-filter-39x-8-950-cfm.html
[12:52:35] <ScribbleJ> I love how they sell all this stuff without ever once directly mentioning its intended usage.
[12:52:56] <ScribbleJ> I have to wonder if some naieve gardners really do get these things for their cilantro.
[12:52:58] <Jymmm> ScribbleJ: clean air?
[12:53:11] <ScribbleJ> I love the subtle hints though
[12:53:27] <ScribbleJ> "Phat" filter. and the psychadelic background on the product photo.
[12:53:27] <Jymmm> ScribbleJ: for coriander cilantro ?
[12:53:41] <Jymmm> or herbal cilantro?
[12:53:49] <Jymmm> ;)
[12:53:59] <r00t4rd3d> your filament spool looks like the Death Star
[12:54:20] <jdh> ScribbleJ: make me an acrylic Pi box
[12:54:30] <r00t4rd3d> <|
[12:54:40] <ScribbleJ> "Phat filters use a very special Mongolian charcoal carbon that comes from a source of pre-Cambrian ore, or some of the oldest carbon found on earth. This carbon dates back 250 million years and is the reason our Phat Filters are so effective!"
[12:54:44] <ScribbleJ> Ugh... really?
[12:54:55] <ScribbleJ> All carbon on earth dates back billions of years.
[12:55:09] <ScribbleJ> It was made in motherfucking stars.
[12:55:11] <jdh> s/billions/6,000/
[12:55:17] <ScribbleJ> jdh, I will stab you.
[12:55:39] <r00t4rd3d> i dont think you will.
[12:55:53] * r00t4rd3d hands ScribbleJ a knife
[12:56:16] <ScribbleJ> OK, fine, I won't. But I will give him a disapproving glare.
[12:56:27] <r00t4rd3d> aww, all talk, no slice.
[12:56:52] <Jymmm> ScribbleJ: coconut shell activated carbon is the best
[12:57:03] <r00t4rd3d> not really
[12:57:25] <ScribbleJ> I don't have any opinion on what's best, I just know bullshit when I see it. Heh!
[12:57:37] <r00t4rd3d> well, matters what you use it for.
[12:58:15] <Jymmm> ScribbleJ: For air filteration that is the best quality you can get in pellet form. usually 20% higher that others
[12:59:11] <Jymmm> scand if you can, get it in 20-25 lb bags instead of 50 lb, much easier to deal with
[12:59:21] <Jymmm> ScribbleJ: ^^^
[12:59:48] <Jymmm> ScribbleJ: also, do NOT buy pre-washed, just wash it yourself.
[13:00:43] <ScribbleJ> I think I'm OK, actually. I live on 2 acres and my neighbors are unlikely to smell my acrylic.
[13:00:51] <ScribbleJ> And I'm not growing any cilantro. Or 'cilantro.'
[13:00:52] <ScribbleJ> Heh
[13:01:45] <ReadError> ScribbleJ: hows your cat tunnels?
[13:02:18] <ScribbleJ> ReadError, in desperate need of an upgrade. I got my router running, which I wanted to use to make some improved cat tunnels. But I haven't really got it /useable/...
[13:02:32] <ScribbleJ> In particular, I need to come up with some good way to clamp work to the bed (which is aluminum t-slot)
[13:02:51] <ReadError> get some of those clamps from a2z
[13:02:56] <ReadError> i need to get a few more actually
[13:02:59] <Jymmm> ScribbleJ: if you ever do rubber/leather, you'll want a carbon filter, even on 10 acres. lingering stench of burning flesh is the best description
[13:03:08] <r00t4rd3d> ScribbleJ, http://www.thingiverse.com/thing:776
[13:03:21] <r00t4rd3d> those work good,
[13:03:24] <ScribbleJ> Jymmm, actually, that's a fair point. I did some leather for a friend, and even though there wasn't much of it, the smell was pretty horrid.
[13:05:15] <Jymmm> ScribbleJ: are you setup in a garage or shop? If you use a carbon filter instead of venting outdoors, you can save on the heat the blower exhausts too
[13:05:24] <ScribbleJ> r00t4rd3d, nice... that's a good design I figure... not sure it'll fit my table, though I can definitely use the idea.
[13:05:26] <Jymmm> in the winter time
[13:05:37] <ScribbleJ> Jymmm, just in my garage for now.
[13:06:06] <Jymmm> ScribbleJ: a 600CFM blower can suck the heat out of the garage in no time =)
[13:06:59] <Jymmm> which can also fubar the final product due to thermal expansion
[13:08:35] <r00t4rd3d> ScribbleJ, there is 3 different size clamps in the DXF
[13:08:51] <Jymmm> Many will turn on their lasers 2+ hours in advance so it'll "trickle" heat the tube/PS to stabalize in winter time.
[13:11:12] <ScribbleJ> r00t4rd3d, I guess I really meant the linked product with the bolt that you need to screw the clamp down. Pretty sure my aluminum slotted bed is not a standard 't track' size. It's made of 40mm extruded aluminum with that X shape, I dunno what you call it.
[13:11:28] <ScribbleJ> Er, I think 40? Maybe 20. I'd have to go look.
[13:11:29] <ScribbleJ> Heh
[13:12:03] <ScribbleJ> Jymmm, that's interesting. People who are good machinists go to some incredible lengths to make things perfect. I think I'll always be crippled by impatience.
[13:12:44] <Jymmm> ScribbleJ: when you have a stack of pieces that dont align up, it makes a differnce =)
[13:13:12] <Jymmm> ScribbleJ: nothing a simple plug in timer can't fix
[13:14:00] <Jymmm> ScribbleJ: also, use orange hand cleaner (automotive) to get rid of some of that char on the cut wood pieces.
[13:14:50] <ScribbleJ> Oh yea? I will try that.
[13:15:03] <ScribbleJ> I've used a wet rag and it's not very effective.
[13:15:25] <Jymmm> ScribbleJ: and GET A REAL BLOWER I see the smoke residue from not a big enough blower =)
[13:15:56] <IchGuckLive> by have a nice day wherever you are !
[13:16:52] <Jymmm> ScribbleJ: or at least a bigger / stronger fan =)
[13:17:37] <ScribbleJ> Oh, yeah? I've defintiely had a residue problem. That's a good idea.
[13:18:26] <Jymmm> ScribbleJ: is the fish your design?
[13:18:51] <ScribbleJ> No, some dude named M.C. Esher. Whoever he was.
[13:18:54] <ScribbleJ> :P
[13:19:20] <ScribbleJ> More seriously, I got the dxf from someone else. I can find a link if you want.
[13:19:23] <Jymmm> That's really neat. gotta steal that
[13:19:34] <Jymmm> ScribbleJ: please
[13:19:53] <ScribbleJ> http://www.thingiverse.com/thing:20681
[13:22:31] <Jymmm> ScribbleJ: got em, thanks
[13:24:42] <Jymmm> ScribbleJ: teh overall build/esign of a "cheap chinese laser" isn't all that bad at all.
[13:24:49] <Jymmm> ScribbleJ: yours that is
[13:25:06] <Jymmm> and digital controls and no fucking dongle too!
[13:25:36] <ScribbleJ> Yea, there's a lot to like about it. I think I got a pretty solid deal.
[13:26:12] <Jymmm> ScribbleJ: the ONLY real thing I don't like, is the tube clamps are solid instead of padded with rubber/neoprene etc
[13:26:24] <Jymmm> at least from what I saw in the pics
[13:26:51] <ScribbleJ> Yeah, the tube clamps sort of suck, but someone (logxen maybe?) published a 3d printable replacement that is nice.
[13:27:45] <ScribbleJ> I just haven't seen a need to screw with them yet.
[13:27:46] <Jymmm> cool
[13:27:54] <Jymmm> yeah, I understand
[13:35:46] * Jymmm lol @ ScribbleJ jeep mount - looks like a character from Space Invaders game
[13:36:08] <ScribbleJ> Jymmm, hey, you're right..!! haaa ... I never noticed that.
[13:36:10] <Jymmm> ScribbleJ: http://upload.wikimedia.org/wikipedia/en/2/20/SpaceInvaders-Gameplay.gif
[13:38:40] <tjb1> dewalt is retarded
[13:40:41] <tjb1> The guard on a multi cutter broke so they want me to ship the entire saw out to have it fixed
[13:41:15] <tjb1> or drive 60 miles one way to have it looked at by a "service center"
[13:41:26] <L84Supper> tjb1, maybe they just swap tools vs actually repair yours
[13:41:55] <archivist> or want to see how you abused/used it
[13:42:42] <tjb1> The part is $53
[13:42:50] <tjb1> They won't let me just ship the bad part in
[13:43:22] <tjb1> They will pay as much as the part cost to ship the thing...
[13:43:52] <Jymmm> tjb1: Call Corp offices and complain.
[13:44:08] <Jymmm> but be nice about it
[13:44:15] <tjb1> Gonna have to, I'm not shipping the whole saw to get a plastic guard replaced
[13:44:55] <tjb1> Well I have until January 3, 2013 to get it fixed
[13:47:07] <archivist> there may be a fault that needs more work
[13:47:09] <tjb1> Jymm got it all cut today
[13:47:34] <tjb1> Its a bad design, its plastic guard with a piece of aluminum stuffed in it
[13:48:28] <archivist> what it mounts on may need upgrading too
[13:50:20] <tjb1> Saw was messed up when we got it from amazon
[13:50:51] <tjb1> The blade was so close to the slot in the table that you couldn't close it completely
[14:00:47] <archivist> which reminds me a cheapo mitre saw fell out of a skip this evening, I need to play
[14:03:46] <mrsun> http://www.youtube.com/watch?v=2UtHh0pBxO4&feature=g-u-u brilliant, cooling and cleaning :P
[14:07:08] <stochastic00> Has anybody here seen positional drift in LinuxCNC when probing, but only during probing? I've just filed a bug report, thought I'd see if anyone knows of a workaround.
[14:08:53] <skunkworks__> no
[14:08:58] <skunkworks__> I have probed a lot
[14:12:50] <stochastic00> Thanks... Details: during >20k probe points, I see drift of +-0.05 inch.
[14:13:20] <stochastic00> Using the stepper exerciser at http://linuxcnc.org/docs/devel/html/common/Stepper_Diagnostics.html#_step_timing , I see no drift.
[14:13:42] <tjb1> http://www.ti.com/ww/en/launchpad_site/stellaris.html?DCMP=stellaris-launchpad&HQS=stellaris-launchpad-b
[14:13:49] <jdh> do you have backlash compenstion on?
[14:14:13] <stochastic00> Modifiying the exerciser to probe in one direction instead of traverse, I see drift of 2 thou over 1000 iterations.
[14:14:23] <stochastic00> backlash compensation not on.
[14:14:45] <jdh> can you have asymmetrical lash?
[14:14:58] <stochastic00> I think this pair of tests rules out steplen/stepspace/dirsetup timing issues,
[14:15:33] <stochastic00> and also accel/velocity, electrical noise. Steppers are warm but not hot.
[14:16:07] <stochastic00> Measured backlash to within +/-0.001 inch.
[14:16:33] <stochastic00> Also tested at low stepper speeds.
[14:18:32] <stochastic00> Would asymmetrical lash result in cumulative drift of +-0.05 inch?
[14:18:58] <stochastic00> Anyway, thanks for the suggestions.
[14:19:45] <jdh> dunno.
[14:25:30] <Connor> jdh: Got my internal threading bits in today.. along with a 1/4" t-slotter
[14:26:37] <jdh> cool. I need to find a piece of scrap to try my slot cutter
[14:27:21] <Connor> I think I'm going to mill out the new motor mount, Power draw bar supports and stuff this weekend.
[14:41:01] <Connor> jdh: I think I may try to lay everything out in one job..
[14:46:02] <jdh> all one thickness?
[15:05:59] <Jymmm> HF 20 Ton Shop Press $170
[15:10:42] <Loetmichel> Jymmm: and how much force it can REALLY exert before breaking apart?
[15:10:44] <Loetmichel> 2 tons?
[15:22:45] <Connor> jdh: Yea. the motor mount could be made out of .375", but everything else is out of .5"
[15:23:08] <Connor> and I don't have anything large enough in .375" stock for the mount.. so.. it'll be made out of .5" too
[15:51:10] <Jymmm> Loetmichel: 16 ounces at a time
[15:53:50] <Jymmm> http://www.harborfreight.com/20-ton-shop-press-32879.html
[15:54:58] <Jymmm> http://www.harborfreight.com/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/i/m/image_14133.jpg
[16:33:39] <DJ9DJ> gn8
[16:41:44] <Jymmm> ScribbleJ: I was going to tell you something but you left and I forgot =)
[16:45:20] <Jymmm> ScribbleJ: So, remind me to tell you when I remember what I forgot to tell you.
[16:45:34] <ScribbleJ> I'll write myself a note.
[16:45:39] <ScribbleJ> :P
[16:46:00] <Jymmm> It was something significant too darnit
[16:46:23] * Jymmm mind is a terrible thing to waste!
[19:01:42] <PCW> andy: around?
[21:23:43] * r00t4rd3d farts
[22:19:01] <r00t4rd3d> http://www.linuxfordevices.com/c/a/News/LG-demonstrates-wireless-Linux-Web-pad-at-CeBIT/
[22:19:07] <r00t4rd3d> LG had a iPad in 2001 :/
[22:19:22] <tjb1> hello channel
[22:26:28] <tjb1> pooh an update to mdf madness
[22:26:53] <tjb1> someone needs to paint better :P
[22:40:48] <tjb1> r00t4rd3d
[23:01:09] <r00t4rd3d> yeah im not the greatest detail painter
[23:09:37] <tjb1> you in pennsylvania?
[23:59:45] <JessicaRN> hola folks. has anyone got a 3d laser line scanner up and running?