#emc | Logs for 2009-11-20

[00:36:56] <Jymmm> SWPadnos: YAY BABY... http://cgi.ebay.com/METER-SHUNT-2000-AMP-50MV_W0QQitemZ290353626846QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item439a6cbede
[00:43:14] <MattyMatt> that's enough to meter a modest windmill
[00:43:43] <andypugh> 2000A at 1mV?
[00:46:27] <MattyMatt> I presume the 50mV is derived from ohm's law, and is not the actual rating
[00:47:00] <MattyMatt> ah MV not mV :)
[00:47:34] <MattyMatt> enough to meter a modest thunderstorm
[00:47:41] <andypugh> No, it means that you would wire a 50mV FSD meter across it to measure 2000A
[00:48:06] <MattyMatt> yeah that's what I thought, but it's MV not mV
[00:48:22] <andypugh> So you were right about Ohms law. And that is just somebody being dumb.
[00:48:29] <Jymmm> More than likey it's 50mV per Amp
[00:48:58] <Jymmm> for every 50mV you rad on your volt meter, that's one amp
[00:49:03] <Jymmm> s/ad/read/
[00:49:51] <andypugh> 50mOhms resistance? Could well be.
[00:49:53] <skunkworks> ummm 50mv/amp would be really bad... that would be pretty high resistance ;)
[00:49:53] <MattyMatt> so they don't bother marking ohms in power industry?
[00:50:52] <PCW> I think shunts are always rated for full scale mV (50) at full scale amps (2000)
[00:51:15] <skunkworks> yes
[00:51:22] <andypugh> if it is 50mV - 2000A then that is 2.5uOhms, and that seems unlikely (though it is a pretty big chunk of metal)
[00:51:49] <PCW> That sounds right
[00:51:54] <skunkworks> calibrated chunk of metal ;)
[00:52:10] <PCW> (100 W dissipation at 2K amps)
[00:52:19] <andypugh> It's quite well finned for 100W...
[00:52:31] <MattyMatt> never mind the metal. will you ever get a connection at 2.5uO?
[00:52:33] <PCW> Heat means errors
[00:52:53] <andypugh> Doesn't matter.
[00:52:57] <PCW> connection is unimportant (4 terminal)
[00:53:14] <andypugh> The current is the current, and you will have no current in your sense wires.
[00:53:57] <MattyMatt> oh yeah, pure voltage measurement
[00:54:06] <andypugh> So even with 100V drop across the power terminals, you still get an accurate measure of the current from the 50mV you measure.
[00:54:32] <PCW> No, it would melt :-)
[00:56:03] <andypugh> Only until it had welded itself together.
[00:56:05] <MattyMatt> those aren't really heat fins, they're the resistive elements
[00:56:26] <PCW> Both actually
[00:56:34] <andypugh> Aye, but the only reason to have many of them, spaced, is cooling.
[00:57:08] <MattyMatt> easier trimming also maybe? but yeah heat too
[01:02:34] <eric_unterhausen> ot: is it too rude to leave a note in your engine bay that says "please do not overfill the oil" ?
[01:03:02] <MattyMatt> asking for trouble if the "have a sense of humour"
[01:03:16] <eric_unterhausen> if you don't ask, they overfill
[01:04:24] <andypugh> Going to get more of a problem. Our cars have a "low". "correct" and "take some out" mark. Bound to cause confusion.
[01:04:39] <andypugh> Oil levels tend to rise on DPF-equipped diesels.
[01:05:10] <andypugh> If you let it get too high, you pull oil over, and the engine revs to 6700rpm and then dies.
[01:05:26] <eric_unterhausen> it makes me wonder if they bother to tighten the bolts they loosen
[01:05:35] <eric_unterhausen> "please tighten the bolts you loosen"
[01:05:36] <andypugh> (And you can't stop it, as the fuel it is running on is its own engine oil)
[01:06:19] <eric_unterhausen> andypugh, that's nice
[01:06:28] <andypugh> Nobody touches my my vehicles but me. Then when I am riding along I know that the wheel spindle is tight. Or I know that I don't know, and check....
[01:06:33] <eric_unterhausen> good thing Toyota doesn't make diesels
[01:06:50] <andypugh> ? Yes they do.
[01:07:04] <eric_unterhausen> do they sell them in the U.S.?
[01:07:23] <andypugh> Now that I don't know
[01:08:47] <eric_unterhausen> I'm going to go back to the dealer tomorrow and get them to remove some oil
[01:09:10] <andypugh> Yes. Too much can be dangerous.
[01:09:32] <andypugh> Though less so with a low compression engine.
[01:09:34] <eric_unterhausen> there is a TSB that says not to put too much oil in the engine, causes failures
[01:10:06] <andypugh> Yes, overheated, aerated oil is not effective.
[01:19:02] <andypugh> Valen: Google Rotrex
[01:19:04] <andypugh> http://image.automotive.com/f/incoming/10301775+pheader/0512_hrdp_02_z+rotrex_supercharger+boost.jpg
[01:20:26] <andypugh> Oh.
[06:58:01] <dan1mal> hi
[06:59:02] <dan1mal> quick question... i must be an idiot... i'm a bit lost with classicladder
[07:00:27] <dan1mal> i know how to configure the hal to load it, but i need to actually write a ladder diagram and i need to know how to load the gui so i can do it
[07:01:12] <dan1mal> i guess i'm kind of lost without a desktop icon to click on :)
[07:02:00] <dan1mal> i read the emc wiki and i entered what it said into a terminal but it wouldnt load anything
[07:02:51] <dan1mal> what am i missing
[07:16:09] <tom3p> i seemed to have been hit by a fork bomb or some app is run away spawning... anyone else? ( was running halrun, halscope, firefox, scite editor, hal had 2 stepgens, 1 freqgen, 1 hal_parport )
[07:17:12] <tom3p> symptom "failure to fork child, resource tempoarily unavailable" when attempting to open any app.
[07:29:23] <archivist_emc> tom3p, go to a terminal and run top
[07:31:40] <archivist_emc> firefox and its flash viewer are resource hogs on my boxes and need restarting when they get in the way
[07:41:40] <tom3p> archivist_emc when the fork bomb hits you cant open a terminal you cant run top, there are no resources left
[07:41:47] <tom3p> none
[07:43:02] <tom3p> i rebooted and found that this is a problem with linux in general, and am trying some measures per http://hightechsorcery.com/2008/02/preventing-fork-bombs-ubuntu
[07:43:09] <tom3p> cul8r
[07:43:14] <tom3p> thx too
[07:43:44] <tom3p> oh, was also running gCAD3D, it looks like its APT underneath
[08:10:55] <Jymmm> alex_joni: http://www.riemurasia.net/jylppy/media.php?id=67208
[11:12:07] <MarkusBec_away> MarkusBec_away is now known as MarkusBec
[11:46:47] <EbiDK> EbiDK is now known as EbiDK|AWAY
[15:46:16] <als_> does anyone know if you can get heekscnc to install on AMD64?
[16:50:45] <danimal> hi
[16:52:13] <danimal> i'm having issues figuring out classicladder
[16:53:58] <danimal> i get how to configure the hal file to use it and all that stuff, but i need to make the ladder diagram and i dont understand how to start the user interface so i can do that
[16:54:35] <danimal> i read the wiki and entered everything into the terminal like it said, but nothing loads
[16:55:31] <danimal> i was under the impression that it was installed with emc2, do i need to physically install software?
[16:58:45] <MattyMatt> "Classicladder version 0.7.100 is included in emc2.1 to EMC 2.2.8. "
[16:59:53] <danimal> i have 2.3.3
[17:00:07] <danimal> so i need to install it?
[17:00:11] <skunkworks_> no
[17:00:40] <skunkworks_> one of the sample configs loads ladder.. iirc
[17:00:50] <skunkworks_> let me look
[17:00:54] <MattyMatt> you have 7.124 apparently
[17:01:22] <danimal> yea, there's a config in my hal that looks like it loads it
[17:01:24] <MattyMatt> * MattyMatt leaves expertise to experts now :)
[17:02:13] <danimal> i removed the # and nothing loads at least to my knowledge
[17:02:33] <danimal> but i didnt think that loads the gui
[17:03:00] <danimal> which is what i need to write the ladder diagram, correct?
[17:03:50] <danimal> i'm using a mesa 5i20 card if it matters, so no stepperconfig for me
[17:10:43] <skunkworks_> look at the demo_step_cl hal files
[17:17:01] <danimal> i searched for it in the wiki and it came up with some easier to understand instructions
[17:17:17] <danimal> thanks!
[17:17:27] <danimal> i'm gunna try what it said
[17:18:40] <danimal> oh wait it said it's way out of date
[17:18:55] <danimal> and it links me to the page i already saw
[17:25:02] <danimal> i cant find any demo_step_cl configs
[17:29:31] <skunkworks_> http://git.linuxcnc.org/gitweb?p=emc2.git;a=tree;f=configs/demo_step_cl;h=d37f0949fdbc8c5df748a9f19b98ff4e1a301f4f;hb=HEAD
[17:29:43] <skunkworks_> I don't know why they wouldn't be in your sample configs.
[17:36:09] <MattyMatt> phooey. local eng supplies don't carry brass stock
[17:36:35] <danimal> i really just want to understand what i'm missing, rather than just copying another config
[17:37:29] <MattyMatt> compare a working one with yours
[17:37:32] <MattyMatt> if you can
[17:38:55] <MattyMatt> # things out until it stops working
[17:44:53] <MattyMatt> Combibe et Vide
[17:45:47] <MattyMatt> I wish I could remember Latin declensions :)
[17:46:23] <MattyMatt> these online translators don't recognise the imperitive in English
[17:46:34] <danimal> ugh
[17:49:09] <danimal> the problem with all this is everything i read assumes you know something, so none of what i read makes any sense.
[17:50:12] <MattyMatt> so copy a working config for now. it's generally easier to understand a working system
[17:50:15] <cradek> morning seb
[17:50:23] <cradek> I think you are right about when it jumps up from zero
[17:50:47] <danimal> a working config doesnt work
[17:57:52] <daniimal> ok i figured it out... the sample config line in my hal had a dash in there for some reason so i deleted the dash and it worked
[17:58:18] <daniimal> and now i see the ladder editor under file in axis
[17:59:02] <daniimal> gracias for the help guys
[18:06:55] <motioncontrol> good evening at all.which install the mgcodegenerator.py on blender ?
[18:08:24] <tlab> ?
[18:22:58] <frallzor> http://pici.se/p/ohuQyNIIJ/ finally! :P
[18:37:36] <motioncontrol> please some people can help me for install the mcgodegenerator.py in blender for export dxf file in gcode ?
[18:42:52] <SWPadnos> I suspect that nobody here has used mcodegenerator.py, and probably a very small number of people here have used Blender
[18:43:00] <SWPadnos> so I don't think we're the best place to get help
[18:43:44] <motioncontrol> SWPadnos, thanks . have some thing for a good converter the dxf in gcode ?
[18:43:56] <mozmck> yoyoek knows about it when he's on. did he write it?
[18:44:07] <SWPadnos> I don't have experience with any of them, sorry
[18:44:20] <mozmck> did you try heekscnc?
[18:44:25] <awallin> frallzor: SRSLY?! looks like a big machine...
[18:45:02] <motioncontrol> i use first example for dxf convert in gcode.
[18:45:20] <motioncontrol> don't know heekscnc
[18:45:51] <motioncontrol> mozmck, you what use ?
[18:46:16] <mozmck> I don't use much yet. I've just hand written what I needed so far.
[18:47:22] <mozmck> You can get heekscad/cnc packages for several versions of ubuntu here: http://yamato.hyte.de/packages/heeks/
[18:47:37] <MattyMatt> motioncontrol, open blender, and in the top menu there's a dropdown box with SR:1 - Animation?
[18:47:54] <mozmck> I haven't played with it much but others say it is usable.
[18:48:53] <MattyMatt> blender is usable, after many weeks of pain
[18:50:11] <motioncontrol> MattyMatt, i use autocad and have dxf file.what is the good converter for traslate in gcode for emc?
[18:50:35] <MattyMatt> dunno that, but I can help you use a blender script
[18:51:17] <motioncontrol> MattyMatt, ok please help me blender is good. i don't have menu Animation
[18:51:58] <Jymmm> motioncontrol: try #blender, this is #emc
[18:52:07] <MattyMatt> #blenderchat
[18:52:25] <MattyMatt> or #blendercoders for trickier questions :)
[18:52:44] <motioncontrol> MattyMatt, ok thanks
[18:54:48] <frallzor> awallin indeed
[18:54:58] <frallzor> as big as a huge kitten
[18:55:42] <frallzor> 2750x1630 "effective area" or whats its called in english =)
[18:56:13] <archivist> working area
[18:56:13] <MattyMatt> that's bigger than an 8x4 sheet
[18:56:22] <frallzor> mm that is
[18:56:47] <frallzor> mm as in millimeter not Mmmmm donuts
[18:58:04] <frallzor> is 8x4 common?
[18:58:21] <MattyMatt> it's universal, for plywood, I think
[18:58:30] <Jymmm> in lumber, yes.
[18:58:36] <MattyMatt> even metric ones are really 8x4
[18:58:54] <frallzor> isnt 2750x1830mm a common size too?
[18:58:59] <frallzor> might be for mdf
[18:59:25] <Jymmm> No, 8x4 in lumber speak is 2"x4" rough cut
[18:59:52] <frallzor> ah
[19:00:21] <archivist> 2400x1200 ish is 8ft by 4 ft ish
[19:00:22] <awallin> frallzor: are you going to do routing on wood or ?
[19:00:28] <frallzor> mostly
[19:00:37] <frallzor> but it seems it works fine for some sheetmetal too
[19:02:24] <frallzor> doing a plain old mechmate =)
[19:03:01] <MattyMatt> they look strong enough to mill steel
[19:03:38] <frallzor> yeah some steel seems ok too, if you dont cut too much at a time =)
[19:04:11] <frallzor> if I get a nice enough spindle most should works nicely
[19:04:16] <frallzor> * work
[19:05:17] <frallzor> Damn Im happy I dont have to work with this in the garage :P
[19:05:26] <MattyMatt> gantry looks like it would hold a drill press head
[19:06:48] <MattyMatt> is cheaping out on the spindle the way to go with a mechmate tho? :)
[19:07:25] <frallzor> well the electronics will be the bitch on this build, mechanics is all good to be welded
[19:07:41] <frallzor> so might aswell save for a nice spindle
[19:08:05] <frallzor> the steel alone cost more than my last entire build =P
[19:08:15] <Jymmm> SWPadnos: http://www.parallax.com/tabid/407/Default.aspx
[19:08:18] <MattyMatt> I can imagine
[19:08:29] <frallzor> but it was surprisingly cheap and good
[19:09:15] <MattyMatt> there's a shipyard 2m from here. I'll go there when&if I make a mechmate :)
[19:09:29] <frallzor> and now it seems i might get away without "taxes" for the material too :P
[19:09:45] <frallzor> and I also get free labour for some reason
[19:10:03] <MattyMatt> all cut out for you? nice
[19:10:30] <frallzor> ppl like odd projects
[19:10:40] <frallzor> they never heard about diy cnc-mills =P
[19:11:14] <MattyMatt> or maybe they just have, and you've saved them $20k on their next machine
[19:11:50] <frallzor> nah dont think so, their machines cost weeee bit more than mine :P and
[19:11:57] <frallzor> they do so much more =P
[19:12:12] <MattyMatt> really? mechmate looks pro quality to me
[19:12:32] <frallzor> well yeah, pro-diy at least
[19:12:40] <frallzor> some ass stole the design and sells it as his own too
[19:12:56] <frallzor> without an ok :P
[19:13:46] <frallzor> http://truecnc.com/
[19:13:55] <frallzor> looks familiar? =)
[19:13:56] <MattyMatt> if the hardware design is GPL, that's cool
[19:14:18] <frallzor> well there is an agreement you have to accept to get drawings and such
[19:14:48] <frallzor> I think the creator lives in S Africa
[19:15:10] <frallzor> and those guys are in the US so not much to do about it then
[19:16:42] <frallzor> still, its pretty lame to just claim that the design is their own =)
[19:16:51] <MattyMatt> well if an american can sue a foreigner in a US court, maybe a foreigner can also sue an american there
[19:18:30] <MattyMatt> it would be fair, anyway ;)
[19:19:15] <frallzor> do you know much about them chinaspindles?
[19:19:25] <MattyMatt> nope
[19:19:27] <frallzor> those 3kw ones looks interesting
[19:19:50] <MattyMatt> I read that the chinese lathes are all copies of the emco 5
[19:20:09] <frallzor> they like to copy BP too :P
[19:20:33] <MattyMatt> and kalashnikov
[19:20:44] <MattyMatt> but doesn't everyone? :)
[19:20:49] <frallzor> i bet they do some "Sorny camcorders too"
[19:22:07] <MattyMatt> at 3kW, I'd be keen to have separate spindle + motor with belt, for servicability
[19:22:40] <MattyMatt> and gearing & smoothness etc
[19:23:01] <frallzor> not my cup of tea
[19:23:08] <MattyMatt> I know nothing tho. the last real machine shop I was in was at school
[19:23:08] <frallzor> since i dont know shit about designing that =)
[19:23:40] <MattyMatt> that's why I said drill press head. you can get a nioce old drill press cheap on ebay
[19:23:55] <frallzor> hmm link one
[19:24:01] <MattyMatt> in US?
[19:24:03] <frallzor> not really sure what you mean
[19:24:05] <frallzor> anywhere =)
[19:25:27] <MattyMatt> http://cgi.ebay.co.uk/Drill-Press_W0QQitemZ160378237098
[19:25:44] <MattyMatt> that's the nicest on page one of the search
[19:26:28] <frallzor> hmm
[19:26:49] <frallzor> isnt that a no go for a mill with those?
[19:27:13] <MattyMatt> yeah probably a vertical mill is better
[19:28:42] <MattyMatt> http://cgi.ebay.co.uk/Linley-Vertical-Milling-Machine-Jig-Borer_W0QQitemZ150390158043
[19:29:03] <MattyMatt> mm nice one as it is actually, for the price :)
[19:29:14] <frallzor> might be a biiiit over the top for a mechmate :P
[19:30:21] <MattyMatt> yeah. I'm pretty sure an old heavy drill spindle would be better than a cheap modern router tho
[19:31:07] <MattyMatt> a good heavy one with a taper spindle, not just a chuck
[19:31:52] <MattyMatt> fitting it all in the mechmate cradle would be the hard part
[19:32:01] <frallzor> yeeep
[19:32:25] <MattyMatt> you may be able to hang the motor outside the cradle
[19:32:53] <frallzor> nah it would sacrifice too much
[19:33:31] <MattyMatt> yeah, it look s like it wants all the weight between the poles of the gantry
[19:34:39] <MattyMatt> iirc, the rails only support below, and depend on the weight to hold it down
[19:45:29] <frallzor> ill aim for the chinese one atm =)
[19:45:46] <MattyMatt> it's probably wise
[19:45:58] <MattyMatt> even if it breaks, you can get another the same
[19:46:46] <frallzor> seems to be pretty decent support
[19:48:14] <frallzor> http://www.damencnc.com/tools/man/TeknoMotorCatalog.pdf these seem pretty nice too
[19:55:17] <MattyMatt> yeah they look the business
[19:55:49] <MattyMatt> fairly unbreakable I should imagine
[19:55:58] <MattyMatt> especially in wood
[19:56:03] <frallzor> dont know if they sell in sweden though
[19:56:08] <frallzor> I want it tax-free
[19:56:33] <MattyMatt> I was gonna say, it's all eurozone but you're not :)
[19:56:44] <frallzor> check my ip :P
[19:57:47] <MattyMatt> I forgot .se isn't euro
[19:58:04] <frallzor> ah you were talking currency :P
[19:58:39] <MattyMatt> ah but you're EU for customs purposes?
[19:59:07] <frallzor> yeah
[19:59:26] <frallzor> and I know a guy that fix industrial electronics taxfree for me
[20:00:12] <frallzor> no i mean VAT
[20:00:17] <frallzor> thats the word =)
[20:00:42] <MattyMatt> you can claim that back, if you are registered as a business
[20:00:53] <frallzor> So I want it to be available to him from the companies he buys from
[20:01:01] <MattyMatt> or your friend is
[20:01:03] <frallzor> those damencnc ones probably is DE only
[20:01:30] <MattyMatt> italy
[20:01:34] <frallzor> ahh
[20:01:48] <frallzor> hmm cant hurt to ask him then
[20:02:33] <frallzor> I need to take every chance to get a freebie I can on this build :P
[20:02:42] <frallzor> otherwise Ill be dead when its complete!
[20:03:01] <MattyMatt> yeah, if you give him cash, he can make it look like lost profit too, so he'll win on taxes
[20:03:51] <frallzor> well I'll pay the price - VAT so its just him +-0 for him
[20:04:29] <MattyMatt> no, because on his company books is the machine which loses 25% value for 4 years
[20:05:06] <frallzor> he could claim its for his business too
[20:05:11] <frallzor> dunno how he does =)
[20:05:19] <MattyMatt> the only danger is his company is audited, and they ask where the machine is. the normal answer is "broken" or "stolen"
[20:05:51] <frallzor> well a single spindle wont be something they ask for, he buys shitloads of elektromotors for repairs and such
[20:06:08] <MattyMatt> hmmm. for the record, I'm not advising, only informing you how to do this tax fiddle :)
[20:06:47] <frallzor> well I know that he doesnt do anything bad, and I get a bit of discount
[20:06:58] <frallzor> so I assume he knows if its ok or not :P
[20:07:07] <frallzor> but I wont ask more :P
[20:07:16] <MattyMatt> "bad" and "OK" are subjective terms ;)
[20:07:30] <MattyMatt> nobody likes the tax rules, except the taxman
[20:07:38] <frallzor> =P
[20:07:49] <MattyMatt> but it's how they got Al Capone
[20:09:15] <MattyMatt> you could be 100% legal by keeping it on behalf of his company, and give it back if he goes bust within 4 years
[20:10:46] <MattyMatt> and every time you do him a favour, issue him an invoice marked paid
[20:11:11] <frallzor> I allmost registered a company just to get the rid of the vat for a few months
[20:11:22] <MattyMatt> :)
[20:11:26] <frallzor> nothing against it, but paying it later wouldnt hurt
[20:12:01] <MattyMatt> only register if you want to be registered forever
[20:12:22] <frallzor> well I do want to =)
[20:12:31] <MattyMatt> it is worthwhile if you intend to start a business, but there's a lot of paperwork
[20:12:34] <frallzor> want to register my future company as a designer =)
[20:12:50] <frallzor> wouldnt hurt claiming a nice name now
[20:21:31] <MattyMatt> you can earn up to 45k gbp here before you are required to register for VAT, but it's optional before that and worthwhile if you are buying capital goods
[20:22:54] <MattyMatt> I hate VAT, it's evil
[20:23:36] <frallzor> indeed
[20:23:43] <MattyMatt> children pay it on everything, even stuff for their career
[20:24:02] <frallzor> atleast students usually get good discounts
[20:24:08] <MattyMatt> I've been paying it on my shoes since I was 11. big feet
[20:37:17] <MattyMatt> now I wish I had the cash+tools to get that linley mill and CNC it
[20:37:36] <frallzor> =P
[20:37:37] <MattyMatt> it'll go for around 70gbp is my guess
[20:38:29] <MattyMatt> I'd need a big van to collect it too :)
[20:38:56] <MattyMatt> I don't think momma would like that in her car
[20:40:26] <MattyMatt> or her house
[20:41:15] <jt-plasma> http://i47.photobucket.com/albums/f163/johnplctech/Hardinge/hardinge01.jpg
[20:41:30] <jt-plasma> and
[20:41:32] <jt-plasma> [IMG]http://i47.photobucket.com/albums/f163/johnplctech/Hardinge/hardinge02.jpg[/IMG]
[20:41:45] <jt-plasma> http://i47.photobucket.com/albums/f163/johnplctech/Hardinge/hardinge02.jpg
[20:42:02] <awallin> your machine?
[20:42:12] <jt-plasma> the Hardinge is 5 1/2" from the concrete
[20:42:14] <jt-plasma> yes
[20:42:18] <cradek> allright! indoors!
[20:42:29] <MattyMatt> that ain't yo momma's house
[20:42:57] <frallzor> cute =P
[20:43:05] <MattyMatt> :)
[20:43:06] <jt-plasma> gotta go let the delivery crew put a hospital bed in at my neighbors be back later
[20:45:58] <awallin> anyone have pics how that hardinge looks inside the covers?
[20:48:17] <cradek> http://s47.photobucket.com/albums/f163/johnplctech/Hardinge/
[20:50:06] <awallin> is it going to be EMCed ?
[20:50:21] <cradek> yes he says it's dead
[20:50:46] <awallin> 1990ish ?
[20:51:11] <cradek> yeah 85-90 I bet
[20:55:09] <frallzor> is that a lathe?
[20:57:58] <awallin> looks like one...
[20:59:58] <frallzor> wonder if one can do a good diy one :P
[21:00:29] <awallin> given time and money anything is possible. how much do you have of those?
[21:00:37] <frallzor> not too much atm :P
[21:00:46] <frallzor> spending it all on current diy mill :P
[21:00:50] <MattyMatt> gingery + ikea + emc :)
[21:01:05] <awallin> then just buy one... it's faster and might be cheaper
[21:01:12] <MattyMatt> dunno if ikea make waterproof closets tho
[21:03:01] <MattyMatt> I cut L shaped sides for mine just for strength, but it makes it look like a whole different class of machine, and now I'm gonna box it in with covers
[21:03:17] <MattyMatt> no coolant tho, it's still plywood :)
[21:03:28] <frallzor> pics?
[21:03:40] <MattyMatt> fraid not. I'm lax at pics
[21:04:00] <MattyMatt> and I always start bragging after sundown
[21:04:50] <MattyMatt> gimme a mo, I'll get a quick flash pic
[21:06:04] <frallzor> http://www.pici.se/p/ZWBWplThD/ family pic for my mill material :P
[21:06:16] <frallzor> (the untreated ones on the floor)
[21:08:02] <L84Supper> some lovely brown tubing as well
[21:09:25] <frallzor> not mine =P
[21:11:53] <MattyMatt> leaving my cam plugged into usb drained the batteries :p nice to know yet annoying to find out
[21:16:54] <awallin> what kind of lathe tool goes into this holder? http://www.brw.ch/i2cmsdata/brw/images200x200/W315080.jpg
[21:17:16] <awallin> "Rückzugstahlhalter" in German... ?
[21:18:03] <archivist_emc> I want to see that from the rear of that pic awallin
[21:18:12] <awallin> anyway I'm looking at QCTPs again. some people seem to like the MULTIFIX system a lot too
[21:18:36] <archivist_emc> I would not use multifix on a cnc
[21:19:12] <awallin> why ?
[21:19:52] <archivist_emc> were the tool itself would be
[21:20:14] <awallin> huh?
[21:20:44] <awallin> http://www.eurospares.com/graphics/metalwork/multifixbrochure/multifix12.jpg
[21:21:03] <archivist_emc> I see what it is, its a withdrawal tool for screw cutting
[21:21:11] <awallin> that toolholder is a "screw cutting device"
[21:21:58] <awallin> seems Dickson or Multifix are my choices for QCTP
[21:22:02] <archivist_emc> no use at all for a cnc
[21:22:06] <MattyMatt> how come nobody has suggested a turret instead? :)
[21:22:53] <awallin> I'm pretty sure I don't want to buy one (2keur ??) and I'm also pretty sure I don't want to build one, I think.
[21:22:56] <archivist_emc> Dickson is designed to go back in the same position multifix is designed to be rotated and fast changes
[21:24:03] <archivist_emc> and the multifix at work does not seen that good
[21:24:10] <archivist_emc> ex work
[21:26:22] <archivist_emc> for a hand lathe user multifix would be better
[21:26:23] <awallin> ok...
[21:27:03] <awallin> any opinions on tools facing up or down with rear mounted tools? I guess better to press down on the toolholder/linear-rails ?
[21:27:51] <archivist_emc> is this for that home brew lathe
[21:28:12] <awallin> yeah just day-dreaming...
[21:28:30] <archivist_emc> finish the toolchanger!
[21:28:34] <cradek> often folks put a parting tool on the back, upside-down, so it doesn't dig in when it's not stout enough
[21:29:08] <archivist_emc> I broke a parting tool by that reason a few weeks ago
[21:29:34] <archivist_emc> was my bestest tool too
[21:29:48] <cradek> how?
[21:30:10] <archivist_emc> to near the tailstock and it bit
[21:30:31] <archivist_emc> snapped the carbide tip
[21:30:52] <cradek> parting with the tailstock??
[21:31:39] <archivist_emc> tailstock is old and loose not rigid enough in the center
[21:36:03] <archivist_emc> the Sandvik parting tool is so nice when it works though
[21:57:22] <jt-plasma> now to sort out where everything else goes :)
[22:02:22] <andypugh> Valen: Are you there?
[22:03:15] <andypugh> Anyway, if he is or not, I just had a rather odd happening. My z-axis on the lathe reversed itself in G0, bit was fine in G1
[23:08:45] <numen> hi
[23:09:01] <awallin> hi...
[23:09:28] <numen> does anyone know a good stepper controller? for selfbuilding, which support microsteps and about 5A/60V each phasis?
[23:10:06] <awallin> are you sure it is not cheaper and easier to buy a geckodrive?
[23:10:21] <numen> i think so
[23:10:45] <numen> easier for shure^^
[23:12:16] <numen> but i think, its cheaper to build them myself, cause i need 7pcs
[23:12:33] <frallzor> experienced with this stuff?
[23:12:52] <awallin> I would just build power-stages, and put the logic in software on an fpga or similar
[23:13:42] <andypugh> What do you get with PWM current-sources directly controlled by EMC?
[23:14:44] <awallin> I think the current limiting needs to be faster than what EMC can do
[23:15:11] <awallin> andypugh: been looking at more QCTPs, some people like the Multifix type also...
[23:15:52] <andypugh> Multifix lets you put tools in at funny angles, which is much more of an advantage for manual than CNC
[23:16:24] <numen> i want with step/dir inputs
[23:16:25] <andypugh> Yes, hardware current limits, but EMC can generate steps (not microsteps though)
[23:17:07] <awallin> I did find those Dickson T.0 holders cheaply on ebay, so that's a plus. Not sure how much the holder and how much the post contribute to accuracy...
[23:17:37] <awallin> with a hardware PWM generator in an fpga you could generate the drive for all output FETs
[23:17:48] <awallin> six of them I guess if it looks like a 3-phase drive
[23:18:12] <awallin> haven't really studied stepper drives... I guess Mariss of geckodrive has some good whitepapers out there
[23:29:05] <numen> nope 2 phase steppers, so i have 4 wires, i think, i will need 8 fets?
[23:29:49] <awallin> check microchip.com they make the PIC microcontrollers and they have reasonable application notes for a lot of stuff
[23:30:00] <awallin> or IRF, they make FETs and power stages
[23:33:07] <numen> awallin microchip has a 2 interesting app notes, but they dont use step/dir inputs
[23:33:23] <awallin> what do they use?
[23:34:24] <numen> they use rs232 for getting the command
[23:34:49] <awallin> that is probably a software issue then to convert to step/dir input
[23:35:11] <numen> yes
[23:35:19] <numen> but ive never used ucs before
[23:52:49] <frallzor> * frallzor is tired
[23:53:02] <frallzor> long day ahead of me with sleeping
[23:53:09] <frallzor> *of sleeping even