#linuxcnc | Logs for 2013-12-08

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[00:13:47] <CaptHindsight> andypugh: http://www.youtube.com/watch?v=S6OZXdRoogY 2014 Ford 3D Printing - Official Promo
[00:16:41] <andypugh> Ihave watched the very machines at work.
[00:17:38] <Tom_itx> anybody have hole spacing dimensions on the 7i47?
[00:17:42] <Tom_itx> it's not in the pdf
[00:17:55] <andypugh> I haven't been to the foundry, but the printer room looked like my workplace.
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[00:25:41] <Jymmm> andypugh: is it all printing for lost casting ?
[00:26:01] <Jymmm> well, minus the loss part =0
[00:26:01] <andypugh> it's printing sand cores
[00:26:07] <Jymmm> ah
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[00:26:17] <andypugh> They print parts too.
[00:26:18] <Jymmm> andypugh: whats the binder?
[00:26:35] <andypugh> I have driven cars where all the intake ducts were 3D-printed
[00:26:54] <andypugh> No idea what the binder is.
[00:27:07] <CaptHindsight> the binder is a monomer
[00:27:09] <andypugh> I suspect prometal won't say
[00:27:11] <Jymmm> andypugh: thermal? chemical? ultrasonic?
[00:27:15] <Jymmm> ah
[00:27:17] <CaptHindsight> thermal set
[00:28:13] <CaptHindsight> the binder is ink-jetted onto the sand layers
[00:28:30] <Jymmm> ah
[00:29:01] <CaptHindsight> spread a later of sand, inkjet the areas that you want for the mold, repeat....
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[00:30:10] <Jymmm> Yeah, I want to try that with sugar in my laser. But I need to iface the Z axis via it's serial port independantly from it's XY and laser
[00:30:26] <CaptHindsight> keep it a secret
[00:30:36] <Jymmm> whys that?
[00:31:46] <CaptHindsight> kidding, things like this tend to be either trade secrets or obscure patents
[00:31:46] <Jymmm> CaptHindsight: whys that?
[00:31:50] <Jymmm> ah
[00:32:37] <Jymmm> Well, I send jobs to the laser via it's paraport, but To control the Z requres it's serial port and I'm not sure how to mix and match them commands wise
[00:32:53] <CaptHindsight> Candyfab used a hot air nozzle
[00:33:12] <CaptHindsight> http://candyfab.org/
[00:33:23] <Jymmm> Eh, I can just fuse the sugar with the laser itself
[00:33:59] <CaptHindsight> sweet sls :)
[00:34:50] <andypugh> Well, what a waste of a day. I have now spent 14 hours installing kernels, compiling LinuxCNC versions and reconfiguring, and I am now only a few hours short of having the same nearly-working system that I started with
[00:35:07] <Jymmm> andypugh: Congrats?
[00:35:21] <Jymmm> andypugh: You have come full circle grasshopper!
[00:35:25] <CaptHindsight> or maybe selective laser sintering of saccharides = SLSS
[00:36:14] <Jymmm> CaptHindsight: I was thinking just various stages of carmel for translucent/obaquiec and color variances
[00:36:45] <andypugh> Selective Laser Using Toffee (SLUT)
[00:36:54] <Jymmm> HAHAHAHAHA
[00:36:58] <Jymmm> andypugh++
[00:39:06] <CaptHindsight> http://the-sugar-lab.com/
[00:40:47] <CaptHindsight> they use sugar + inkjet for binder and color
[00:41:04] <CaptHindsight> http://www.3ders.org/articles/20130910-3d-systems-buys-the-sugar-lab-maker-of-3d-printed-sugar-confections.html
[00:41:08] <Jymmm> Whole Handicrafts Optically Rendered Edible Sugars
[00:42:07] <andypugh> That's my retirement plan, have an idea and get myself bought out by 3D Systems
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[00:43:10] <CaptHindsight> printed gummy bears
[00:43:21] <andypugh> I have a 3D-printed V8 engine on my desk made from corn starch.
[00:44:01] <Jymmm> andypugh: does IT use a binder?
[00:44:10] <andypugh> In theory it would make a decent core for a lost-wax casing, to make a 273cc V8.
[00:44:35] <andypugh> Yes, it seems to be bound by a green liquid.
[00:44:39] <Jymmm> starch is a sugar, so it should therma bond, yes?
[00:45:26] <CaptHindsight> it works on pressed shirts
[00:45:30] <Jymmm> Fuck it, brb.... grabs box of corn starch and the torch!
[00:47:55] <andypugh> http://www.youtube.com/watch?v=y5z6LxiUB6A
[00:48:09] <andypugh> He has to be trying to spell that badly!
[00:49:10] <andypugh> http://en.wikipedia.org/wiki/Dust_explosion
[00:50:04] <NickParker> andypugh: where.. where did you find that?
[00:50:35] <Jymmm> Well, it sorta worked. uploading videos now
[00:50:42] <andypugh> I already knew that there had been a custard explosion at the Birds plant. Then I googled and found that.
[00:51:35] <andypugh> We deliberately caused a custard powder explosion in Chemistry at school. It was grate
[00:51:47] <CaptHindsight> things looked different back then
[00:53:11] <andypugh> (I can normally spell, but when talking about skool one is obliged to spell like Molesworth): http://en.wikipedia.org/wiki/Nigel_Molesworth
[00:53:22] <DaViruz_> in hindsight!
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[00:57:27] <Jymmm> If I take something ike this, Can I turn it into an accurate thrmometer like wiht an arduino? http://www.ebay.com/itm/Standard-TS172T-Engine-Coolant-Temperature-Sender-/200999023241?pt=Motors_Car_Truck_Parts_Accessories&fits=Year%3A1988|Model%3ACivic&hash=item2ecc79b289&vxp=mtr
[00:58:55] <Jymmm> 1st http://v5.tinypic.com/player.swf?file=ftnfbb
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[01:01:50] <andypugh> Jymmm: Probably.
[01:01:55] <CaptHindsight> depends on what you mean by accurate
[01:02:24] <andypugh> I would guess that it changes resistance. A bridge circuit might help
[01:02:36] <Jymmm> 2nd http://v5.tinypic.com/player.swf?file=hvattl
[01:05:08] <Jymmm> andypugh: Yes, resistive. a bridge??? as I understand it: -20c ~= 15000-18000 ohms, 20c ~= 1000-4000 ohms, 80c ~= 200-400 ohms
[01:05:41] <CaptHindsight> Jymmm: what temp range do you need?
[01:06:12] <andypugh> The Wheatstone bridge is a neat way to convert the change in resistance of one or more resistive elements into a voltage that varies from zero to (not zero)
[01:06:12] <Jymmm> CaptHindsight: 40F to 300F
[01:07:02] <Jymmm> CaptHindsight: Maybe a lil higher for fudge factor
[01:07:31] <Jymmm> andypugh: I'll check it it.
[01:07:59] <Jymmm> I'd like an accuracy of one degree
[01:08:05] <andypugh> So, you set up 4 resistors in a square (typically two of them are part of a potentiometer) and then you can zero the output voltage. Then any change in resistance of one of the other legs changes the output voltage. It's very useful because it is much easier to amplify 0-100mV then 10.000 to 10.100V
[01:09:09] <CaptHindsight> http://en.wikipedia.org/wiki/Wheatstone_bridge
[01:10:01] <CaptHindsight> http://www.magnet.fsu.edu/education/tutorials/java/wheatstonebridge/index.html
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[01:11:04] <andypugh> it is very common to set up that circuit where all 4 elements are strain gauges (typically with parallel nulling resistors on 2 legs)
[01:12:30] <andypugh> If you arrange it so that opposite pairs are compession and tension, then you automatically get compensation for itemperature variation both in the gauges and the material of the load cell.
[01:13:21] <andypugh> It is pretty easay to make a 1um resolution measurement device that way, using a bit of bent clock-spring and $10 of strain gauges,
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[01:18:40] <CaptHindsight> Jymmm: http://www.walmart.com/ip/Taylor-Digital-Cooking-Thermometer/7894646
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[01:21:07] <CaptHindsight> -12C and it's not even winter yet
[01:21:44] <andypugh> I am scheduled to spend 2 weeks in Saut St Marie in early February
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[01:24:28] <andypugh> (Sault St Marie, when I check)
[01:24:37] <CaptHindsight> thats not far from Frostbite Falls
[01:25:02] <andypugh> The original plan was Thompson, Manitoba.
[01:25:50] <andypugh> But we figured that the cars would have to be put in the fridges to keep them warm enough to start in Thompson.
[01:26:01] <CaptHindsight> yeah
[01:27:00] <CaptHindsight> we still had 30C+ days here 2 months ago
[01:28:03] <andypugh> Looks like Thompson is actually going to warm up a lot in the next week or so: http://www.accuweather.com/en/ca/thompson/r8n/december-weather/49000
[01:28:14] <CaptHindsight> heading back to south China soon anyway, 5-20C depending on how to the coast
[01:28:32] <CaptHindsight> how close
[01:28:43] <andypugh> It was snowing in Qingdao when I left (March)
[01:29:02] <CaptHindsight> yes, up north
[01:29:36] <CaptHindsight> it's like the midwest US, still piles of snow and then 20C
[01:29:48] <CaptHindsight> no real spring or fall
[01:30:08] <andypugh> yes, I suppose it is. For some reason I was equating "being on a south-facing coast" with being in the south.
[01:31:28] <CaptHindsight> wouldn't Greenland be a shorter trip?
[01:32:37] <andypugh> The cars are being made Just In Time in Detroit
[01:32:55] <andypugh> Normally we use Rovaniemi in Finland.
[01:33:48] <andypugh> I actually quite like Rovaniemi. Friendly locals, and after 10 years of annual trips, I know my way around.
[01:34:20] <andypugh> Thompson was described by a colleague as "A town of miners and stripppers and not a lot else"
[01:34:57] <CaptHindsight> sounds about ( A-Boot) right
[01:36:42] <CaptHindsight> do you test them for cold weather behavior?
[01:37:09] <andypugh> Yes, exactly.
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[01:37:20] <DaViruz_> in sweden we enjoy mocking the finns for being grumpy, alcoholic and knife obsessed
[01:37:29] <DaViruz_> in reality we are exactly the same and don't mind it at all
[01:37:40] <CaptHindsight> andypugh: what do they use for engine oil?
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[01:38:15] <andypugh> We check that they actually start, and we check that they run properly when the intake air is very cold, and that the heaters work. We also accidentally test that the door handles don't become very brittle (they did, one year)
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[01:38:20] <CaptHindsight> DaViruz_: how about the Norwegians?
[01:38:38] <DaViruz_> we mock them for being overly happy and athletic, and quite stupid
[01:38:40] <andypugh> DaViruz_: One year we tested in Jokkmokk. It wasn't so very different.
[01:39:00] <DaViruz_> they mock us for being grumpy and stupid
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[01:39:20] <andypugh> CaptHindsight: Engine oil is the same as anywhere else. 0W30
[01:39:38] <andypugh> I don't know where we go from 0W oil...
[01:39:53] <CaptHindsight> -5W30?
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[01:40:09] <andypugh> Or is it 00W30? Like knitting-needles?
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[01:40:47] <DaViruz_> and every other measrring system where they found out that making the largest size zero wasn't such a great idea
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[01:43:15] <CaptHindsight> xW-20
[01:43:36] <andypugh> It seems that only UK needles work that way, US needles can't get any smaller. http://en.wikipedia.org/wiki/Knitting_needle#Needle_gauge
[01:44:49] <DaViruz_> but US wires can get larger!
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[01:45:20] <DaViruz_> let's just make it 5iW30, because complex numbers are surch fun
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[02:18:36] <Jymmm> CaptHindsight: Thanks, but I need to both read and control a heating element
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[02:20:10] <CaptHindsight> Jymmm: you can hack the circuit in the display. I used one or similar from wallymart since it beeps at the set temp
[02:20:31] <CaptHindsight> tie the beeper to a controller of choice
[02:21:14] <Jymmm> CaptHindsight: 1) not avaiable from walmart, 2) bad reviews... http://www.amazon.com/Taylor-1478-21-Stainless-Programmable-Thermometer/dp/B001GD1WHU
[02:21:39] <Jymmm> Better http://www.amazon.com/Taylor-1470-Digital-Cooking-Thermometer/dp/B00004XSC5/ref=pd_bxgy_k_img_z
[02:21:51] <Jymmm> better reviews that is
[02:22:25] <CaptHindsight> we used it with a $20 hotplate (pancake maker style) to heat samples
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[02:22:41] <Jymmm> http://www.amazon.com/ThermoWorks-Original-Cooking-Thermometer-Timer/dp/B0019R4HQQ/ref=cm_cr_pr_sims_t
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[02:23:12] <CaptHindsight> it's around here somewhere
[02:23:43] <Jymmm> CaptHindsight: Yeah, That's kinda what I'm doing. I have an IR gun too, but I'm also looking for a temp controller and abuse-proof sensor
[02:24:10] <Jymmm> I thought a car sending unit could take the abuse
[02:24:27] <Jymmm> and bolt into a contianer
[02:24:41] <CaptHindsight> what are you heating?
[02:25:14] <Jymmm> water, plastics,
[02:31:23] <andypugh> Night folks
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[04:07:46] <Tom_itx> updated the control a bit: http://tom-itx.dyndns.org:81/~webpage/cnc/psu/control8.jpg
[04:12:38] <Tom_itx> Jymmm, notice the covered switch now
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[04:17:42] <Jymmm> Tom_itx: is that all five sides?
[04:18:41] <Jymmm> Tom_itx: very cool =)
[04:19:50] <Tom_itx> you know those blister packs you rip your finger open trying to get the stuff out?
[04:20:03] <Tom_itx> guess where that cover came from :)
[04:20:25] <Jymmm> HAHAHAHA... *PERFECT* use for em
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[05:01:11] <jesseg> Anyone around?
[05:07:13] <jdh> doesn't look like it.
[05:08:00] <jesseg> haha
[05:08:59] <RyanS> I am not here either
[05:09:01] <jesseg> I'm trying to figure out why LinuxCNC is moving the A axis (LINEAR, INCH) an inch when the gcode file is in MM. XY and Z all move correctly
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[05:23:18] <Tom_itx> did you set it up in the ini?
[05:23:25] <Tom_itx> TYPE = ANGULAR
[05:24:10] <jesseg> TYPE = LINEAR for axis A
[05:24:18] <jesseg> Oh
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[05:24:40] <jesseg> Does Slic3r put out degrees for the extruder (A)?
[05:24:50] <Tom_itx> no clue
[05:25:01] <jesseg> Because we put the extruder to linear, and calibrated it that way in LinuxCNC
[05:25:06] <jesseg> I will go ask that in #slic3r
[05:26:48] <Tom_itx> then you would also want to make sure your SCALE is correct
[05:27:51] <jesseg> Well, within LinuxCNC scale IS correct. Checked that by jogging an inch in 0.1 inch steps, and measuring the distance moved on filament
[05:28:55] <jesseg> Actually, checked it by jogging 10 inches :P
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[05:38:24] <jesseg> You know, I think it's a bug in LinuxCNC - only question is it a jesse bug or a LinuxCNC bug :P
[05:38:53] <jesseg> It's like LinuxCNC is forgetting to convert mm to inches for the A axis -- but not for XYZ as they work fine
[05:41:01] <tjtr33> does it seem like A is considered to have rotary units? ( therefore no conversion )
[05:41:41] <jesseg> Slic3r which is producing the Gcode files puts out all mm on all axis. There is no question about that. And that's what it should be doing.
[05:42:18] <jesseg> However, this line: "G0 Z0.400 F12000.000 A-3.00000" is causing the filament axis to move 3 inches.
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[05:43:27] <jesseg> Even though LINEAR_UNITS = inch, and [AXIS_3] \n TYPE = LINEAR
[05:44:23] <jesseg> Hmmm.
[05:44:41] <jesseg> There is scaling applied from some config other than my-mill.ini.
[05:45:01] <jesseg> For example, my encoder motors have 1000 counts per turn (Using third party step and dir driver boards with PID built in.)
[05:45:17] <jesseg> And my feed screws have 20 threads to the inch.. So my resolution is 20,000 on XYZ
[05:45:41] <jesseg> And yet, in the my-mill.ini file, for axes 0-2 inclusive, SCALE = 1000
[05:46:03] <jesseg> oh wait.
[05:46:21] <jesseg> maybe I set up the S/D board to do 20 counts internally for each step. Yeah, I think I did.
[05:46:30] <jesseg> never mind that..
[05:47:17] <jesseg> so back to the question of why is LinuxCNC taking "3.0" as 3 inches instead of 3mm, even after "G21 ; set units to millimeters"
[05:48:25] <jesseg> XYZ are all same scale, and are set to 20x in motor controller board. Axis A is set to 1:1 in motor driver board, and is calibrated correctly to move the filament one inch per one inch jogged.
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[05:49:01] <tjtr33> integrators manual sez "Angular axes like rotary tables are referred to as A, B, and C. Additional linear axes relative to the tool are called U, V, and W respectively."
[05:49:02] <tjtr33> i know its nuts, but maybe linuxcnc is stubbornly considering your A as a rotary, can you try calling it U?
[05:49:50] <jesseg> Ahhhh.. Interesting.
[05:49:52] <tjtr33> if linuxcnc thinks its rotary it wont scale at all, leaving 3 mumbles = 3 mumbles.
[05:50:22] <tjtr33> a short program and a global replace in a text editor could check it out
[05:51:10] <jesseg> Well, LinuxCNC *does* map A to AXIS_3 alright. But you're saying in the GCode file, it might also map U to AXIS_3 ?
[05:51:35] <jesseg> What if I had a fourth linear and an angular...? haha weird
[05:52:08] <jesseg> Hmm. I do have "COORDINATES = X Y Z A"
[05:52:33] <jesseg> Maybe I need X Y Z U, then change Slic3r to send it as U and not A
[05:55:06] <jesseg> Thanks, tjtr33! At least I have something to try now that even sort of makes sense!!
[05:55:52] <tjtr33> plz look at the supplied gantry config, its 4 linear axis, where Y & A are colinear (emphasis on linear )
[05:56:30] <tjtr33> it uses XYZA where Y&A are parallel and linear
[05:57:26] <jesseg> Oh, so a Can be linear, if it's bonded to another regular linux?
[05:58:44] <tjtr33> again, you gotta read these docs , i see the xmpl uses 'gantrykins' so doesnt directly apply. your problem HAS been handled by linuxcnc, i'm not finding the correct files yet
[05:59:01] <jesseg> ahh
[06:02:10] <jesseg> I think using "U" is a great thing to try
[06:02:15] <tjtr33> some old memory sez you need XYZA and axis_0,1,2,6 not axis_3 , like the baddie is not the letter A, but the use of axis_3.
[06:02:40] <jesseg> Ahhhh...? OK I can try that too.
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[06:05:41] <jesseg> wb Fox_Muldr
[06:06:15] <tjtr33> jesseg read up on http://www.linuxcnc.org/index.php/english/forum/21-axis/6981-explicit-settings-for-4-axis-xyuv-please
[06:06:28] <tjtr33> its only similar, but maybe useful
[06:06:41] <jesseg> Thanks... Reading!
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[06:09:17] <tjtr33> more to the point for your issue http://www.linuxcnc.org/index.php/english/forum/10-advanced-configuration/23406-trying-to-configure-xyzu-4-axis-setup
[06:10:36] <jesseg> You know what, I think it's easier to just set up LinuxCNC in mm instead of inches.
[06:10:49] <jesseg> That way it won't matter :P
[06:12:28] <jesseg> I didn't realize it was a can of worms. I've saved all my notes in case switching to MM doesn't work.
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[06:12:41] <jesseg> But for now I think I shall just try that. Thanks again!
[06:13:32] <tjtr33> the last url solves your problem, i dont the prob is mm vs inch, the prob ( i think ) is rot vs linear, and linear gotta be xyzuvw never abc ( i think )
[06:13:53] <tjtr33> best o luck!
[06:15:18] <jesseg> I think you are absolutely right.
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[06:17:14] <jesseg> But.. if Slic3r is putting out mm, and I set LinuxCNC to mm, then when slic3r says A1.0, LinuxCNC will move A 1.0 MM since that is the unit. (Remember, LinuxCNC DOES let me calibrate the A axis to correctly "function" as an inch linear, and I think it was pretty close considering the steps/turn and gear reduction and drive wheel diameter.)
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[06:18:49] <RyanS> do cnc lathes usually vary the RPM during a cut even with small variations in part diameter?
[06:20:12] <WalterN_bed> normally its a good idea to keep the surface feet per minute the same
[06:21:04] <tjtr33> jesseg change that statement to " LinuxCNC DOES let me _lie_ " its not science when you force the result ;P it just looks correct.
[06:21:20] <jesseg> LOL exactly
[06:22:18] <jesseg> Maybe some day I'll have time to figure out how to set up 7 axis across multiple config files and do it RIGHT. But if a simple hack makes it work perfectly for now, then I'm all set.
[06:23:28] <RyanS> You should only change rpm with 'large' changes in part diameter?
[06:23:57] <jesseg> But what's strange is that in part, LinuxCNC *is* treating A/AXIS_3 as linear. I can take the diameter of the drive wheel, and steps per turn on motor, and gear ratio, and calculate a scale using the math for a linear axis, and it's close.. Maybe it's coincidence since the drive wheel is about 1 pi circumference :P
[06:30:55] <tjtr33> i betcha the last url will fix your prob. if it does say thx to andypugh & BigJohnT. g'nite
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[07:50:52] <RyanS> Seems a little counterintuitive negative rake turning tools require more power. They look more like a scraping action, whereas positive looks like it's 'gouging'
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[07:58:09] <Deejay> moin
[07:58:22] <mrsun_> hmm, after i added this touch off plate script it seems linuxcnc or something doesnt release the parport after i close it so i have to restart the computer .. anyone know anything about it? :/
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[08:03:45] <mrsun_> i guess it has something to do with classicladder or something not shutting down? =)
[08:03:48] <mrsun_> but how to check stuffl ike that ?
[08:07:31] <mrsun_> first startup it works fine, but if i have to shut down linuxcnc and restart it i get that hal_parport is busy :/
[08:13:54] <archivist> has anyone added a bug for that
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[09:25:55] <RyanS> cool http://www.cnczone.com/forums/general_metal_working_machines/191560-kmg_clone_belt_grinder_pics.html I don't like the aluminium idea. however
[09:31:30] <archivist> note the thickness he is using
[09:32:24] <RyanS> yeah , what about vibration dampening?
[09:33:40] <archivist> for a belt sander I would not be worrying about vibration much, looks solid enough
[09:37:37] <RyanS> I decided to wouss out on converting the drill press.. motor rewind place is doing the delta rewire, VFD (they use good stuff like WEG), enclosure and controls for $450
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[09:38:21] <RyanS> AUD
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[13:07:59] <Mjolinor> any python people in that can explain somethign to me related to https://github.com/reprap/firmware/blob/master/createTemperatureLookup.py#L117
[13:08:25] <Mjolinor> I know nothign about python << thats the important bit :)
[13:09:02] <Mjolinor> on line 117 there is a print statement of a variable "t.temp(adc)" I can't understand where that variable is
[13:09:29] <Mjolinor> all i want to do is make it print "r" as calculated on line 56
[13:09:55] <Loetmichel> *tingering*
[13:09:59] <Loetmichel> tinkering
[13:11:02] * Loetmichel notes: 5t and 6t gears with module 0,5 is asking a bit much of a mill with acme drives and nylon nuts... -> http://www.cyrom.org/palbum/main.php?g2_itemId=14544
[13:11:16] <Loetmichel> ... but at least the mill bit is now doing its job ;-)
[13:12:15] <Loetmichel> ... thats a 0,6mm drill in the gears ;-)
[13:12:38] -!- Tecan has quit [Ping timeout: 240 seconds]
[13:12:40] <Loetmichel> ... and a 3mm thick POM sheet
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[13:23:41] <archivist> tooth form , grrrr
[13:24:26] <Loetmichel> archivist: SHOULD be invloute... when you subtract the play in the mill ;-)
[13:25:05] <archivist> you cannot get the right form that way with that dia endmill :)
[13:25:13] <Loetmichel> you can
[13:25:23] <Loetmichel> if the end mill is mall enough
[13:26:00] <Loetmichel> and the "bottom" of the teet are deeper than necessary, so the radii there will not collide with the other tooths
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[13:51:02] <jthornton> yea, my facing G code generator is starting to work!
[13:51:21] * jthornton celebrates by going to breakfast
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[14:29:20] <gundamlh> wow
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[14:59:50] <JT-Shop> wow
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[15:04:55] <Tom_itx> JT-Shop, how's the gcode gen coming along?
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[15:09:02] <Tom_itx> facing raw material would be a handy one... i seldom program that rather just manually move the cutter
[15:09:15] <Tom_itx> too lazy to write it
[15:21:54] <archivist> mill or lathe facing, kinda different
[15:23:02] <archivist> and if milling, little endmill or slab mill
[15:26:40] <JT-Shop> Tom_itx: I think I have the facing part almost done, I just need to do the depth of cut steps and I'm done
[15:26:57] <JT-Shop> I'll post it on my web site when that is done
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[15:49:59] <pcw_home> Yow 29 degrees! Thats positively Arctic for spoiled Californians like us
[15:55:01] <syyl> 29deg? thats tshirt/shorts weather?
[15:56:09] <pcw_home> 29F :-)
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[15:56:20] <syyl> crap ;)
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[15:56:47] * syyl asks google how cold thats in C
[15:57:05] <syyl> -1,66C
[15:57:11] <syyl> thats ok :D
[15:57:44] <syyl> we expect -10C for tonight
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[15:59:41] <pcw_home> Its fairly rare that we have it this cold here (and its been almost a week)
[15:59:59] <pcw_home> frosty sheep in the morning
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[16:17:48] * JT-Shop finally got the tractor to start a day and a half later
[16:18:08] <JT-Shop> -4c here 18" snow on top of 1/2" if sleet
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[16:20:33] <pcw_home> Snow is a once/20 year think here (well maybe once/10 years in the hills)
[16:24:55] <GuShH> JT-Shop: what was wrong with the tractor? fuel / carb issues?
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[16:30:48] <JT-Shop> well, I didn't start it at all last summer, the battery was shot, the starter solenoid crapped out, the carb was full of gunk and the tires are still kinda low on air... other than that she is in good shape for being 57 years old.
[16:31:24] <JT-Shop> I rebuild the engine a few years ago so it is as good as it was when it was new.
[16:32:52] <GuShH> JT-Shop: sounds about normal
[16:33:06] <GuShH> it's what happens when time goes by
[16:42:19] <JT-Shop> Tom_itx: do you want to test out the G code generator?
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[16:51:53] <Tom_itx> sure
[16:52:36] <Tom_itx> not _as_ cold here as it's been but we got a sheet of ice to deal with.
[16:52:49] <Tom_itx> maybe 20F or so
[16:53:50] <Tom_itx> cloud cover warms it up
[16:55:37] <Tom_itx> pcw_home, i'd much rather deal with 4F here than 29F in Califor n i a... i bet they'd go frantic if they got some moisture with that
[16:55:51] <jthornton> http://gnipsel.com/linuxcnc/index.html
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[16:57:50] <Tom_itx> linux?
[16:58:42] <Tom_itx> i'll move it to the other box here in a bit
[16:59:01] <awyea> hey is there a reason why my ini file wouldnt change the slider values (min/max/default) in axis? I just set those values in the [Display] section right?
[16:59:21] <JT-Shop> Tom_itx: linux for sure, might run in windoze it is python
[16:59:56] <JT-Shop> awyea: did you start LinuxCNC after saving the ini file?
[17:00:27] <awyea> <JT-Shop> ya
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[17:08:43] <JT-Shop> slider for what?
[17:09:49] <JT-Shop> IIRC you can only set the jog slider default
[17:11:00] <awyea> cant set max and min too? I cant even get the default to set right. starts at 700 ipm...my machine has trouble much over 12...
[17:13:16] <JT-Shop> pastebin your ini file
[17:13:50] <Tom_itx> odd one.
[17:14:03] <Tom_itx> JT-Shop, your page loads differently in linux
[17:14:12] <Tom_itx> the gcode gen isn't showing up there
[17:14:24] <Tom_itx> i cleared history and refreshed the buffer etc...
[17:15:46] <Tom_itx> after 'Tutorials' i get 'Sample Configurations' in linux
[17:16:07] <awyea> http://pastebin.com/BjYHPicJ
[17:16:54] <Tom_itx> and under 'Examples' is 'Classicladder Turret and Tool Change'
[17:17:08] <Tom_itx> where here, it is not there
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[17:22:29] <JT-Shop> Tom_itx: that's odd, I see it here under Tutorials http://gnipsel.com/linuxcnc/index.html
[17:23:02] <Tom_itx> that link is up on both here, tried refreshing and both stay the same :/
[17:23:13] <Tom_itx> odd for sure
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[17:23:31] <Tom_itx> i wonder which one isn't getting refreshed
[17:23:33] <JT-Shop> http://gnipsel.com/linuxcnc/files/mill.zip
[17:23:45] <JT-Shop> that's the direct link to the zip file
[17:24:55] <JT-Shop> awyea: looks right to me, are you sure your loading this ini file?
[17:25:21] <Tom_itx> that worked
[17:26:09] <JT-Shop> awyea: your not working with a LiveCD install of 2.5.x are you?
[17:27:54] <awyea> no its installed on a beaglebone black. It let me change the machine units from that metric stuff so I assume its loading correctly. I'll try a full restart
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[17:32:26] <Tom_itx> JT-Shop, what are the X Y Reference and X Y Start for? i understand what start is for...
[17:32:33] <Tom_itx> does it create a leadin?
[17:33:40] <JT-Shop> yes, the XY start is the place to Z down so you don't plunge into the material, if you leave it blank it puts the tool 1/2 the diameter off of the material
[17:34:13] <Tom_itx> so it will almost touch the edge of the material?
[17:35:06] <JT-Shop> unless you tell it where you want it to z down
[17:35:28] <Tom_itx> ok, what's the reference ones for?
[17:35:59] <JT-Shop> if the corner is not X0 Y0 you can tell it what they are
[17:36:50] <Tom_itx> overrides the diagram?
[17:38:19] <JT-Shop> I guess you could say that, say for example you have one part at X0 Y0 and one at X10 Y0 for two vises etc.
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[17:41:01] <awyea> thanks for the help...I've got to go now so i'll save this for another day
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[17:43:08] <Tom_itx> JT-Shop, if i switch from the setup screen to the generate code pages and generate the code, if i switch back to edit something, it doesn't regenerate, rather keeps the first gcode output
[17:43:44] <Tom_itx> in other words... oops i see a mistake, i need to regenerate it but keep most of my settings...
[17:44:08] <Tom_itx> i'm just doing .. what if's here
[17:45:27] <Tom_itx> not sure you do it, but i usually include a finish pass depth like a final skin cut
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[17:46:07] <Tom_itx> overall, it looks good though
[17:46:09] <JT-Shop> I thought it was bad to do a skin cut?
[17:46:11] <JT-Shop> thanks
[17:46:43] <JT-Shop> if you change anything on the settings page you have to generate the G code again
[17:47:22] <Tom_itx> it doesn't regenerate
[17:47:36] <Tom_itx> also, i tried the copy to clipboard and got an error
[17:48:05] <Tom_itx> before and after highlighting the text
[17:48:07] <JT-Shop> are you sure it doesn't regenerate, it works for me and yes copy to clipboard has an error
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[17:48:43] <JT-Shop> for now if you click in the G code window and do Ctrl a then Ctrl c
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[17:49:29] <atom1> i changed the start point for example which would show a huge change in gcode and it stays the same
[17:49:53] <atom1> just using the selecion box for now
[17:50:17] <atom1> i'll start fresh...
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[17:51:07] <archivist> hmm strange sensation, gears axes
[17:51:43] <JT-Shop> my linux computer up here blew a USB gasket, I need to find another mother board for it from my pile
[17:52:20] <atom1> jt did you see those cheap 510 boards?
[17:52:50] <atom1> do i need to run this as root?
[17:52:57] <JT-Shop> no and no
[17:53:15] <atom1> it generates the first pass but upon making changes doesn't regenerate
[17:54:20] <JT-Shop> run it from a terminal so you can see any errors
[17:54:48] <atom1> it changed the header from zigzag to spiral but the code stays the same
[17:55:20] <JT-Shop> ok, zig zag is not programmed yet
[17:55:25] <JT-Shop> sorry forgot to tell you
[17:55:28] <atom1> :D
[17:55:35] <atom1> i was using zigzag silly
[17:55:40] <JT-Shop> LOL
[17:58:48] <atom1> it must not be reading DOC
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[18:00:19] <JT-Shop> I don't quite have DOC done yet
[18:00:22] <atom1> i changed it dramatically and the code didn't change
[18:00:52] <JT-Shop> I almost have that done, it is just a loop to call the path as many times as needed
[18:01:04] <atom1> ok
[18:01:11] <JT-Shop> Z up then over to start then Z down to next level
[18:01:23] <JT-Shop> other than that what do you think?
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[18:01:55] <atom1> should do most facing ops, i might add a final pass
[18:03:08] <JT-Shop> ok, that would just be another call to the path generator
[18:03:11] <atom1> does it go past the material a bit?
[18:03:36] <atom1> like on zigzag if you program the material size there will be a corner left where the tool didn't get
[18:03:38] <JT-Shop> if you use 75% then the first pass is 25% overhang
[18:04:43] <atom1> you could make a default percent there
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[18:05:12] <JT-Shop> for final pass?
[18:05:21] <atom1> no, in general
[18:05:28] <atom1> fro the step over %
[18:05:43] <JT-Shop> yes, default is 75% if left blank
[18:05:53] <atom1> on the final pass i'd just subtract it from the original depth
[18:06:13] <atom1> not necessarily a percent
[18:06:34] <atom1> and if it's left blank, just ignore it
[18:06:45] <JT-Shop> yep, I'll add a place to spell out final pass if wanted
[18:06:50] <JT-Shop> be back in a bit
[18:06:57] <JT-Shop> thanks for looking at it
[18:07:05] <atom1> np, looking good
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[18:15:41] <PetefromTn> Afternoon Folks. Merry Christmas
[18:16:04] <jthornton> Tom_itx, did you look at the tapping and drilling section, it works.
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[18:17:23] <IchGuckLive> hi all B)
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[18:17:57] <IchGuckLive> hi johannes__ !
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[18:26:45] <jthornton> Tom_itx, for fun enter a non number and hit generate
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[18:41:57] <jthornton> Tom_itx, and anyone else I fixed the copy to clipboard http://gnipsel.com/linuxcnc/files/mill.zip
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[19:04:50] <Tom_itx> jthornton, no i didn't look at them yet since you were asking about the facing
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[19:56:47] <archivist> fleabay 261344980360
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[20:03:20] <jthornton> wow that is an interact
[20:04:55] <archivist> there are far too many nice toys on fleabay this weekend!
[20:05:26] <Tom_itx> getting close to christmas... gotta stuff your stockings
[20:05:49] <uw> i could use another bridgeport in my stocking
[20:06:26] <Tom_itx> do those use steppers or servo?
[20:06:32] <archivist> I dont need another...I need my first
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[20:06:52] <archivist> some were stepper
[20:06:54] <uw> i'll figure that out later
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[20:08:29] <andypugh> Those look more like servos than steppers
[20:11:24] <andypugh> Brilliant: http://i.imgur.com/TkYbJsx.jpg
[20:11:51] <andypugh> Tilt/shift processing makes tha Andromeda Galaxy look tiny :-)
[20:14:38] <archivist> pyvcp spinbox seems to have a bug
[20:15:36] <archivist> you can type a number but its not sensed, if you then hit up/down arrow the number you typed is used for the inc and then it is sensed
[20:16:40] <archivist> may get left as a "feature"
[20:17:36] <andypugh> There is a patch for that
[20:18:14] <andypugh> but I think it is a feature to discourage using them. (It's a pretty poor feature, and not very discouraging)
[20:18:38] <archivist> heh
[20:18:46] <andypugh> The reason to deprecate spinboxes is that they grab all input.
[20:19:26] <andypugh> (I need to work on my GladeVCP tabs where the whole tab grabs all input, that's _really_ annoying)
[20:19:42] <archivist> I think I have this thing working as user wants, except the use of a stepper means going through resonance
[20:20:19] <archivist> and his original has serious resonance problems too
[20:22:17] <archivist> with a parallel port it can get to a spindle speed of about 350 rpm and spin the stepper (half step) fast enough to cut a 10 tooth gear through a 20-1 gearbox
[20:23:16] <andypugh> Sounds more than adequate
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[20:28:00] <archivist> I set up the spin box 6-128
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[20:35:09] <andypugh> skunkworks: Is your 7i80 directly connected, or connected through a router?
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[20:35:41] <andypugh> (My PC only has one Ethernet jack, so directly connecting the 7i80 has drawbacks)
[20:36:28] <skunkworks> directly
[20:36:49] <andypugh>
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[20:37:00] <micges> andypugh: should work via good router
[20:37:22] <andypugh> I can't see it either connected directly, or through the router.
[20:37:57] <andypugh> board_name comes up as a blank. (I put a print statement in the driver :-)
[20:38:18] <andypugh> I am wondering if the MAC or IP are wrong.
[20:38:20] <micges> andypugh: use mesaflash to locate board first
[20:38:26] <skunkworks> When I had it hooked up - I could ping it
[20:38:45] <andypugh> micges: I had forgotten that mesaflash was that clever :-)
[20:38:46] <skunkworks> before initallizing the rtnet - after I could ping it using rtping or whatever
[20:40:30] <micges> andypugh: fastest will be set jumpers on 7i80 to hardware address ( and reboot 7i80
[20:40:51] <micges> then make sure your pc has
[20:40:55] <micges> and ping should work
[20:41:24] <andypugh> I wasn't aware that I had to give the PC a fixed IP.
[20:41:54] <andypugh> (also, my router won't allocate IPs outside 192.168.0.X
[20:43:27] <pcw_home> You can add an IPV4 alias to your Ethernet config
[20:44:22] <micges> andypugh: you should use 7i80 directly
[20:45:02] <andypugh> But the PC still gets an IP in the wrong range?
[20:45:57] <pcw_home> The PC can have multiple IP addresses
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[20:46:44] <pcw_home> But without a dedicated connection, things are going to have terrible latency
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[21:00:11] <andypugh> Making progress :-)
[21:01:52] <Tom_itx> http://codinghorror.typepad.com/.a/6a0120a85dcdae970b0128776ff992970c-pi
[21:01:54] <Tom_itx> TM
[21:02:15] <Jymmm> andypugh: the galaxy pic looks "articficial"
[21:02:33] <andypugh> Yes, that's the poit.
[21:02:37] <andypugh> (point)
[21:02:39] <Jymmm> ?
[21:02:59] <andypugh> They have used tilt/shift to make it look like a macro
[21:03:22] <Jymmm> no clue, nm.
[21:03:38] <andypugh> http://news.cnet.com/8301-17938_105-20094788-1/gigantic-coin-achieves-tilt-shift-effect/
[21:07:49] <Jymmm> Hmmm http://en.wikipedia.org/wiki/Tilt%E2%80%93shift_photography
[21:08:55] <andypugh> Wahay! I can flash the LEDs on the 7i80 board!
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[21:10:02] <Jymmm> andypugh: LED Fetish?
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[21:12:35] <andypugh> From that page, http://en.wikipedia.org/wiki/File:Oregon_State_Beavers_Tilt-Shift_Miniature_Greg_Keene.jpg is a really good example of the effect. Doing it to a photo of a galaxy is inspired :-)
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[21:23:09] <Jymmm> andypugh: It's cute
[21:24:00] <Jymmm> andypugh: I believe if I understand the basics a bit more, I'd be more enthusiastic about it
[21:26:06] <Loetmichel> *shi** ... will do that again tomorrow after fixind the y axis... seem a coupling slipping or step errors... :-( -> http://www.cyrom.org/palbum/main.php?g2_itemId=14547
[21:26:55] <Jymmm> wth is that? milled or 3d printed?
[21:27:02] <andypugh> Jymmm: It's pointless and over-used, which is why folk are now playing about with giant coins ans galaxies
[21:27:15] <Jymmm> andypugh: Ah =)
[21:27:32] <Jymmm> Loetmichel: is that milled or 3d printed?
[21:27:44] <Loetmichel> milled
[21:27:57] <Jymmm> Loetmichel: plastic?
[21:27:58] <Loetmichel> 0.6mm mill bit, 3mm thick POM
[21:28:13] <Jymmm> whats POM??
[21:28:26] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=14544
[21:28:29] <Loetmichel> Delrin?
[21:28:33] <Jymmm> ah
[21:28:54] <Jymmm> Loetmichel: Easy cleanup.... use a kitchen green scrubby (scotchbright pad)
[21:29:04] <Jymmm> Loetmichel: great on wood too
[21:29:25] <Loetmichel> aehm, the finges are no problem, thats just because the sheet was glued with double sided tape
[21:29:39] <Loetmichel> that will wash off with Propanol
[21:29:53] <Jymmm> http://2.bp.blogspot.com/-Lq0tEHT5Hvw/TyY7IWo0EWI/AAAAAAAAABY/VlJX5NwVfGo/s1600/scotchbrite1.jpg
[21:29:56] <Loetmichel> but the shift in y indicates a broken coupling or such
[21:30:14] <Jymmm> cant tell thru all the fuzzy swarf
[21:30:52] <Loetmichel> oh, sorry. ,moment, pls
[21:32:02] <Jymmm> andypugh: Right now, I'm just proving my space time continuum in real time, not miniture
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[21:40:27] <micges> andypugh: any more than gpio blinking?
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[21:44:37] <Loetmichel> Jymmm: see it better now? http://www.cyrom.org/palbum/main.php?g2_itemId=14550
[21:44:49] <Loetmichel> especially the onbe in the back middle
[21:45:29] <Jymmm> Loetmichel: Oh, where the bottom half is all wacked?
[21:47:03] <Loetmichel> just that it is the top half that is whacked ;-)
[21:47:09] <Loetmichel> look at the center drill
[21:47:21] <Loetmichel> whcih i made before the outer contour
[21:48:45] <Jymmm> Loetmichel: That's just for DrunkenCNC is all
[21:49:12] <Loetmichel> ?
[21:49:24] <Jymmm> drunk
[21:49:28] <Jymmm> too much boose
[21:49:40] <Loetmichel> my cnc doesent drink
[21:49:44] <Loetmichel> and me neither ;-)
[21:49:50] <Jymmm> but the operator does =)
[21:49:57] <Jymmm> lies
[21:50:13] <Loetmichel> i suppose the coupling on y is gon like x did a few months ago....
[21:50:17] <Jymmm> Loetmichel: your so drunk, you dont even remember that you drink
[21:50:30] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=12563
[21:50:36] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=12566
[21:50:47] <Loetmichel> Jymmm: that times are gone
[21:50:55] <Loetmichel> LONG gone
[21:51:02] <Jymmm> lol
[21:51:22] <Jymmm> Yes, I guess for some, 15 minutes ia a LOOOOOOOOOOOOOONG time ;)
[21:53:42] <Loetmichel> 15 years fits better
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[21:57:57] <Jymmm> 4" ID SS Nut... yeow
[21:58:18] <Loetmichel> Jymmm: i was in a club called "Trinksprotverein Gambrinus e.V."... but that was years ago. the last beer i had about a month ago.
[21:58:57] <Jymmm> See, 15 minutes is a LOT closer to a month, than 15 years agao =)
[21:59:12] <Jymmm> Loetmichel: (I tease of course)
[22:00:20] <Jymmm> SS ballscrew shafts, 1-10 (assuming 1" 10 TPI) $20
[22:00:53] <Jymmm> but has .224 to .584 diam, 1-7ft long
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[22:00:58] <Loetmichel> drinking exessively is about 15 years gone i meant ;-)
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[22:02:06] <Deejay> gn8
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[22:04:25] <andypugh> micges: No, my network froze, and as the machine is running headsless, that was a problem.
[22:04:34] <skunkworks> heh
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[22:07:57] <kengu> http://www.aliexpress.com/item/CNC-Router-Accessories-Dust-collector-Cover-cnc-3kw-spindle-motor-dust-collector-device-D100mm/1089070151.html
[22:08:25] <kengu> this is pretty close to the only product I have found
[22:10:27] <andypugh> It's also horrible
[22:10:54] <kengu> that also
[22:11:08] <kengu> but as stated, best so far
[22:11:59] <andypugh> I doubt I could make one that looked that bad, so would feel obliged to prove it.
[22:13:33] <kengu> http://www.aliexpress.com/item/80mm-Brush-Vacuum-Cleaner-Engraving-machine-Dust-Cover-for-CNC-Router-100mm-diameter-for-spindle-motor/1222645846.html pretty chinese instructions and specs
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[22:14:07] <Tom_itx> surely dyson has made a better one :D
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[22:30:17] <mrsun_> hmm is there any free programs like gwizard? =) i would pay for it if i could afford it but atm looking for some free alternative =)
[22:32:25] <CaptHindsight> http://www.ebay.com/itm/MATSUURA-CNC-RA-1DUAL-PALLET-VERTICAL-MACHINING-CENTER-/281205507634?pt=LH_DefaultDomain_0&hash=item4179278632 it looks like the last operator might have been trapped inside
[22:33:10] <mrsun_> haha
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[22:35:20] <CaptHindsight> http://www.ebay.com/itm/BOSTOMATIC-312-VERTICAL-MACHINING-CENTER-WITH-TOOLCHANGER-IN-PLANT-UNDER-POWER-/200998520298?pt=US_Heavy_Equipment&hash=item2ecc7205ea not bad for $2500
[22:37:31] <CaptHindsight> http://www.ebay.com/itm/Mazak-VTC-16C-Mazak-VMC-Vertical-Machining-Center-CNC-VMC-/131063043436?pt=US_Heavy_Equipment&hash=item1e83f7556c I wonder how high this one will sell for?
[22:40:45] <CaptHindsight> http://www.ebay.com/itm/JONES-LAMSON-TNC210A-COMBI-CNC-CHUCKER-TW237-/370729400325?pt=LH_DefaultDomain_0&hash=item565131b805 here a nice weekend project
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[22:44:53] <kengu> i just transported this from remote workshop to my local shop, http://yilong86.en.made-in-china.com/product/QokEUWxVsecI/China-Laser-Stamp-Engraving-Machine-S25-.html
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[22:46:32] <kengu> it takes hpgl and at the moment I have it set up as normal "2d-printer" with cups. so the phrase "print to laser" gets a new meaning
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[22:47:04] <CaptHindsight> kengu: does it have a z axis?
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[22:47:18] <kengu> nope
[22:48:01] <CaptHindsight> lots of CNC deals on fleabay
[22:48:05] <WalterN_bed> kengu: how much was it?
[22:49:03] <kengu> WalterN_bed: i just transferred it from one place to another for me to have easier access
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[22:56:55] <andypugh> micges: Looks like at least one thing is broken with rt-preempt and 7i80.
[22:57:17] <andypugh> And it is probably my thing to fix. The "lcd" hal component doesn't load
[22:58:20] <micges> lcd.c gives warnings during build, maybe not all were fixed
[22:58:47] <andypugh> It's very odd. halcmd: loadrt lcd fmt_strings="Hello"
[22:58:47] <andypugh> <stdin>:1: /home/andypugh/git/linuxcnc-dev/libexec/rtapi_app_rt-preempt exited without becoming ready
[22:58:48] <andypugh> <stdin>:1: insmod failed, returned -1
[22:58:49] <andypugh> See the log and output of 'dmesg' for more information.
[22:59:04] <micges> what is in log?
[22:59:09] <andypugh> But there are no errors printed anywhere I have found
[22:59:14] <micges> /var/log/linuxcnc.log
[22:59:23] <andypugh> Yes, I am tailing that. Nothing.
[22:59:29] <micges> dmesg?
[22:59:45] <andypugh> Nothing
[22:59:57] <micges> hmm
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[23:00:32] <andypugh> I did make changes to lcd, but they don't seem to have been merged into ubc3
[23:01:11] <andypugh> http://git.linuxcnc.org/gitweb?p=linuxcnc.git;a=commit;h=24dc2a2306bac45f04566cf992a9e5653562896c
[23:01:29] <andypugh> It is just possible that that already fixes the problem
[23:06:32] <andypugh> The warning appears to be about the "abs" function, which I thought was in rtapi_math.h
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[23:07:32] <andypugh> The problem is probably actually with " #ifdef SIM " which will not catch the userspace realtime case.
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