#linuxcnc | Logs for 2012-12-15

[02:03:48] <DJ9DJ> moin
[02:04:37] <tjb1> ello.
[04:57:02] <Jymmm> http://www.wimp.com/parrotbuggy/
[08:17:23] <jthornton> http://linuxcnc.org/index.php/english/forum/41-guis/25930-gremlin?start=30#27765
[08:18:55] <archivist> er read error messages :)
[08:19:11] * archivist is a python free zone
[08:19:19] <jthornton> lol
[08:21:42] <archivist> type errors are "round things dont fit in square holes"
[08:23:07] <jthornton> I think I spotted what is wrong, now to figure out how to pass the ini file to the Gremlin class init
[08:27:10] <mrsun> quare things fit in round holes tho
[08:27:13] <mrsun> with enough force
[08:27:15] <mrsun> :)
[08:27:30] <mrsun> so i guess the oposite is so also
[08:29:10] <archivist> either you use a square thing or convert round to square (cast or some adapting code)
[08:30:07] <archivist> not seen a hammer used properly in software
[08:32:12] <mrsun> bit bangin ? :P
[08:32:45] <archivist> software is like good engineering, your "fits" have to be to specification
[08:40:53] <jthornton> well that didn't work... more guessing I suppose
[08:47:59] <Tom_itx> JT-Shop get any rain overnight?
[08:48:02] <Tom_itx> we got a bit
[08:48:06] <Tom_itx> finally
[08:48:49] <jthornton> yea
[08:48:56] <jthornton> still raining a bit
[08:49:40] <Tom_itx> as dry as the ground is, you can hardly tell it rained
[08:49:44] <Tom_itx> now it's clear again
[09:08:49] <elmo40> moo?
[09:20:08] <archivist> rather polished fleabay 160937552523
[09:22:46] <Tom_itx> yep, looks like it was in a nice clean tool room
[09:24:17] <archivist> I think restored
[09:24:54] <archivist> his vice is in the same paint
[09:25:46] <Tom_itx> maybe in some guy's basement
[09:28:34] <archivist> they are a bit small for some work
[09:33:56] <archivist> next size up from a different maker (I have used one) http://www.lathes.co.uk/boley%20miller/
[09:34:29] <andypugh> That's very pretty.
[11:27:08] <Jymmm> Automation Direct ABM6E52Z11 Limit Switch http://www.weirdstuff.com/cgi-bin/item/20291
[11:30:48] <andypugh> Looks a bit hefty.
[11:47:42] <mrsun> http://sphotos-g.ak.fbcdn.net/hphotos-ak-ash3/s480x480/67933_10151287315723648_255720842_n.jpg new lathe bench is moving along =)
[11:47:43] <mrsun> yeah
[11:47:46] <mrsun> !
[11:48:34] <andypugh> That looks pretty sturdy.
[11:48:46] <mrsun> its not done yet :P
[11:48:56] <mrsun> still got all the braces to put in place =)
[11:49:18] <andypugh> Mine is mounted on: http://www.argos.co.uk/static/Product/partNumber/7000704.htm
[11:49:32] <andypugh> (But bolted back to the wall)
[11:49:40] <mrsun> hehe :P
[11:49:49] <mrsun> well im sick of the lathe movinga round
[11:49:51] <andypugh> The drawer is really useful.
[11:49:51] <mrsun> :P
[11:50:10] <andypugh> And I replaced the top with some much thicker ply
[11:50:46] <andypugh> And the lathe has less metal in it than might be hoped.
[11:50:48] <mrsun> so the bench will be bolted to the floor with big bolts with nuts to be able to jack it into alignment, then the lathe will be on jacking bolts also
[11:51:36] <mrsun> would be nice with some drawers for cutting tools might integrate that under the beam going across (the lowest one will be cut away due to feet space =)
[11:52:55] <mrsun> have to put in somewhere for the electric motor to be mounted also :P
[11:53:09] <mrsun> can mount it on the topside i guess, have to look at that later =)
[11:54:49] <andypugh> Not sure you need feet space, I don't miss it. And if it is CNC anyway....
[11:55:45] <mrsun> its not cnc
[11:55:58] <mrsun> manual lathe
[11:56:01] <andypugh> You probably want to think about drip-tray, drainage and the possibility of a full enclosure. I am not saying fit it, but don't do anything that you would regret later if you chose to.
[11:56:04] <mrsun> its nice to have the space to not kick into stuff if you need to get close =)
[11:58:05] <Tom_itx> or at least a spray guard around the spindle
[12:01:20] <mrsun> if the lathe is salvagable that is :( i think the bed got a huge dip in it by the spindle ...
[12:01:38] <mrsun> oh well, just sell it to someone and get a new one :P
[12:01:57] <mrsun> if they could sell me it, why would i be any different and not sell it to someone else :P
[12:02:09] <Tom_itx> that's the spirit
[12:03:32] <mrsun> not all have the same sence of quality as i so it might be good enough for them :P
[12:03:37] <mrsun> sense
[12:05:07] <mrsun> but will look at what i can do with it first tho =) might not be so bad when it gets mounted to a real bench
[12:05:07] <IchGuckLive> hi all
[12:16:15] <JT-Shop> so I'm cleaning the rust off of my rule for the combination square using the electrolysis method. I want to keep it bright, what can I use to prevent new rust from forming?
[12:18:06] <skunkworks> laquer?
[12:18:19] <skunkworks> or keep it oiled?
[12:18:58] <JT-Shop> I'm guessing some kind of oil based stuff, I didn't know if there was another method
[12:19:07] <mrsun> dont have it in a humid environment and see to it to be oiled up =)
[12:20:36] <cncbasher> JT: wrap in rust preventative paper
[12:24:03] <andypugh> Nickel plate?
[12:24:44] <mrsun> gold plate! =)
[12:25:17] <IchGuckLive> http://www.youtube.com/watch?v=NhGbCAWNU78 PLASMA TABLE construct today
[12:25:33] <IchGuckLive> it runs in the ani
[12:25:40] <IchGuckLive> but if in real
[12:27:25] <IchGuckLive> heep and handy components only drillpress and irensaw needed
[12:27:41] <IchGuckLive> welder of cause
[12:27:45] <Tom_itx> JT-Shop, i never worried much about mine since there's generally enough oil in the shop to keep it lubed
[12:27:55] <Tom_itx> and most of em are stainless anyway
[12:29:44] <JT-Shop> this is an old one that is carbon steel I think my Dad had this one when I was very small...
[12:30:00] <JT-Shop> I also have some hand planes that need cleaning up
[12:30:04] <Tom_itx> wrap it in an oily rag to store then
[12:30:15] <andypugh> If he used it to measure you with, you must have been :-)
[14:26:28] <Aero-Tec> I have redone the Gcode, not to the level like I would like, but will try the G10 L20 Z0 option and see if I can get thing going faster, want to see how fast it will make things
[16:14:43] <DJ9DJ> gn8
[18:22:58] <zephyr-cnc2> I see some posts on [emc-developers] about xenomai. Is there any performance advantage with xenomai?
[18:24:53] <andypugh> Not inherently, but it does mean you can run kernels > 2.6.32 and so newer Ubuntu versions
[18:26:13] <zephyr-cnc2> OK so it will be needed in the future.
[18:28:14] <andypugh> Probably.
[18:29:21] <andypugh> The work also means that you can run LinuxCNC on any mainline kernel. It won't work to full capability, but you can use it like any other downloadable application, with no need for advanced kernel-wrangling or a clean install
[18:41:33] <jdh> what missing capability?
[18:42:56] <andypugh> I think that realtime performance is a bit poor on a completely standard kernel.
[18:48:18] <Aero-Tec> for the one following my G64 quest to get my spring production going
[18:48:55] <Aero-Tec> I have over 50% increase in production
[18:49:05] <Aero-Tec> nice
[18:49:23] <Aero-Tec> thanks for all the help to the one that did help
[18:50:09] <JT-Shop> Sweet!
[18:50:43] <andypugh> What was the final config?
[19:12:08] <andypugh> What an outstandingly neat idea. Making big timing pulleys out of epoxy, using a belt as the mould: http://www.model-engineer.co.uk/forums/postings.asp?th=54791
[19:24:27] <andypugh> Or, I could just make them the normal way: http://www.model-engineer.co.uk/forums/postings.asp?th=54791
[19:24:46] <andypugh> (wrong link, I meant http://www.ebay.co.uk/itm/271117356079 )
[20:00:38] <Nick001> Is there a prog to check out a keyboard in linux cnc? F5 and control K aren't working for me and I want to see if it's the keyboard or a bug in Linuxcnc
[20:03:00] <andypugh> I think there is something for showing keyboard scancodes.
[20:03:42] <andypugh> I remember loooking at it to try to work out how to get round the fact that my keyboard has no CTRL key (!)
[20:11:02] <Nick001> Is it in the linuxcnc package or something I have to hunt in ubuntu for?
[20:11:27] <cpresser> Nick001: showkeys
[20:11:38] <cpresser> -s
[20:13:01] <Nick001> Whats the -s for?
[20:17:42] <Nick001> guess I'll find out tommorow when I tru it out -
[20:31:31] <Tom_itx> andypugh have you hobbed pulleys before?
[20:31:46] <Tom_itx> that belt idea is intriguing
[20:31:56] <andypugh> No. But how hard can it be :-)
[20:32:28] <Tom_itx> i hobbed a couple parts recently
[20:32:47] <andypugh> Yes, I am seriously considering moulding an epoxy pulley layer onto my ballscrew drive
[20:32:58] <Tom_itx> http://tom-itx.dyndns.org:81/~webpage/reprap/drive6.jpg
[20:33:03] <Tom_itx> using a 3mm tap
[20:33:16] <Tom_itx> they came out rather well for the first attempt ever
[20:33:25] <andypugh> freewheeling or spindle-coordinated?
[20:33:30] <Tom_itx> freewheel
[20:33:44] <Tom_itx> i guestimated the root diameter
[20:33:50] <Tom_itx> so they would somewhat mesh
[20:34:07] <andypugh> That works for gears too. Though you tend to get the required number of teeth +/- 1
[20:34:37] <Tom_itx> i need to get a rotary on my mill
[20:35:11] <Tom_itx> i put the tap in the spindle
[20:35:21] <Tom_itx> and mounted the parts on the tool post
[20:36:42] <andypugh> Does the top of the melting chamber have a pair of scoops to fit the pulleys?
[20:37:16] <andypugh> Or do you just trust the filament not to bend?
[20:37:36] <Tom_itx> i haven't gotten that far yet
[20:37:43] <Tom_itx> i just wanted to see if i could make em
[20:38:02] <Tom_itx> i think it will just feed into the melting tube
[20:39:08] <andypugh> Let me model what I mean
[20:39:33] <Tom_itx> http://tom-itx.dyndns.org:81/~webpage/reprap/nozzle7.jpg
[20:39:45] <Tom_itx> there's a nozzle i made but i think i'm gonna redo it already
[20:40:57] <Tom_itx> supposedly there will be very little gap between the feed and the nozzle inlet
[20:41:51] <Tom_itx> i'm just collecting bits n pieces atm. haven't formulated a real plan yet
[20:43:18] <Tom_itx> i wonder if you could cut the belt to length for different size pulleys if you secured it to the mold
[20:47:09] <andypugh> If the nozzle inlet looked like this: http://imagebin.org/239516 There would be absolutely nowhere for the filament to escape.
[20:48:15] <andypugh> Another thought. Diesel engine glow plugs. 12V and fairly cheap (if a little too long)
[20:48:26] <Tom_itx> i'm not sure that's ever been a problem for em
[20:48:46] <andypugh> I don't care, it's a cool shape :-)
[20:49:07] <Tom_itx> :)
[20:49:46] <Tom_itx> http://www.2engineers.com/shop/catridge-heater-30w12v/
[20:49:54] <Tom_itx> some have been using those
[20:50:13] <Tom_itx> are you making a reprap now?
[20:50:45] <Aero-Tec> the final config was turning axis B into axis Z
[20:51:24] <Aero-Tec> it complains about out of range then starting the Gcode but hitting continue works
[20:51:46] <Aero-Tec> just used G64, did not use G93
[20:52:06] <andypugh> Tom_itx: http://imagebin.org/239516
[20:52:41] <Aero-Tec> also used G10 L20 P0 Z0
[20:52:58] <Tom_itx> same image as before
[20:53:11] <andypugh> Tom_itx: Glow plugs probably have a lot more oomph.
[20:53:19] <andypugh> Doh
[20:53:25] <andypugh> http://www.ebay.co.uk/itm/50954392210
[20:53:25] <Aero-Tec> to zero the Z axis after some quick math and relocating Z to the nearest zero of the axis
[20:53:57] <Tom_itx> item has been removed
[20:54:00] <andypugh> Aero-Tec: You know G-code has a MOD function? Might help with the mathematical stuff
[20:54:19] <andypugh> Doh!
[20:54:20] <andypugh> http://www.ebay.co.uk/itm/150954392210
[20:54:44] <Tom_itx> the problem with them is the size
[20:54:55] <andypugh> (We run them at up to 1000 degrees. You clearly wouldn't want to)
[20:54:55] <Tom_itx> mounted to the z axis which they like as light as possible
[20:55:13] <andypugh> They are smaller than you might think.
[20:55:47] <andypugh> The terninal is a 4mm thread, I think. 10mm on the larger thread.
[20:55:54] <Aero-Tec> I did not spend much time with the math, I should have used the MOD function but did not
[20:56:12] <Tom_itx> i think the nozzle hole for the heater is 6mm
[20:56:28] <Tom_itx> is the heat concentrated at the tip?
[20:56:42] <Aero-Tec> now I know things work and are worth the work I will redo the Gcode to make it better
[20:56:47] <Tom_itx> you would need to figure a way for more direct contact to the nozzle
[20:56:55] <andypugh> You can see the discoloured part from the EOL test.
[20:57:32] <andypugh> TBH I hadn't realsied that the cartridge heaters were that cheap.
[20:58:32] <Tom_itx> yeah they're not that much
[21:00:25] <Tom_itx> the real trick for a nozzle now is a skinny piece of stainless with an aluminum heater block on the tip
[21:00:41] <Tom_itx> i'd guestimate 6 or 8mm hex
[21:01:21] <andypugh> Just pass a large current through the stainless. :-)
[21:01:37] <andypugh> Hmm, or an induction heater.
[21:02:42] <Tom_itx> http://prusanozzle.org/
[21:03:23] <Tom_itx> i'd guess that to be 6mm hex
[21:05:37] <andypugh> Looks nice, actually
[21:05:45] <Tom_itx> yep he's proud of it
[21:06:04] <Tom_itx> it's a simple lightweight design
[21:06:24] <Tom_itx> i was a bit concerned using stainless to heat since it's not that great a heat conductor
[21:28:29] <andypugh> Anyway, 'tis late here. Night all
[22:15:00] <L84Supper> http://www.bunniestudios.com/blog/?p=2686 nice ARM board for EMC
[23:09:45] <mikegg> has anyone tried using Jeplers arduino driver with the Uno?
[23:25:41] <gene78> awful quiet in here
[23:41:34] <tjb1> hey r00t4rd3d