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[00:35:02] <EJTruth> Anyone running Linuxcnc on Debian? I'm thinking stable
[00:41:47] <L33TG33KG34R> hello guys
[00:42:04] <L33TG33KG34R> I need some help with selecting electronics for my machine if its possible
[00:44:12] <tjb1> Ello.
[00:45:02] <L33TG33KG34R> So I am building a CRP 2448 with dual steppers for its x axis
[00:45:20] <tjb1> Ok
[00:45:28] <tjb1> NEMA 23s from cncrp?
[00:45:31] <L33TG33KG34R> I want to close the loop from the steppers to my PC running linuxcnc
[00:45:33] <L33TG33KG34R> no 34
[00:45:51] <tjb1> Im not the person to talk to about closed loop
[00:46:16] <L33TG33KG34R> so I want a closed loop system for both my steppers and my spindle (I haven't found my spindle yet but intent to do rigid tapping)
[00:46:32] <L33TG33KG34R> I also want to use a pendant but I am unsure of the configuration
[00:46:32] <tjb1> The steppers rarely lose steps though if you set them correctly
[00:47:04] <L33TG33KG34R> I understand that, but I want to employ the "hybrid servo" setup
[00:47:56] <tjb1> Sorry, no help from me
[00:48:05] <L33TG33KG34R> so I was thinking of the Mesa 6I25 card with the 7I85S for stepper and spindle (i will have to wire 2 stepper drivers to one port for the x axis)
[00:48:24] <tjb1> pcw_home, awake?
[00:48:28] <L33TG33KG34R> but how do I hook up a pendant? can I use a usb pendant?
[00:48:45] <tjb1> I ordered a pendant that is a usb emulator
[00:48:57] <tjb1> Otherwise you'll need to tie the inputs to what you want
[00:49:46] <L33TG33KG34R> ok, will I have enough IO on the 7I85S to wore limit switches and e-stop? or would I need another breakout board for that?
[00:53:09] <tjb1> I don't use Mesa, PCW can help with that and much of the others
[00:53:35] <tjb1> I just have a G540 and a C10 BOB
[00:53:58] <L33TG33KG34R> Also what spindle can do rigid tapping?
[00:54:15] <L33TG33KG34R> cause all the chinese spindles are waaaay too fast
[00:55:23] <tjb1> Plasma :P
[01:00:00] <tjb1> I'm worthless, sorry :)
[01:01:57] <L33TG33KG34R> its alright... thanks for the help
[02:33:01] <archivist> L33TG33KG34R, most just use an encoder on the spindle, not closed loop but the other axes are geared/follow what the spindle does
[02:39:25] <archivist> what materials are you intending to machine
[02:43:09] <DJ9DJ> moin
[04:12:28] <Jymmm> Note to self.... Self, jb weld shouldn't be used in the cold.
[04:26:54] <DJ9DJ> happy new year, Jymmm
[04:27:28] <Jymmm> HNY2U2
[04:27:36] <DJ9DJ> tnx :)
[05:27:41] <Loetmichel> mornin' and a happy new year!
[05:48:52] <mrsun> http://www.stevenson-engineers.co.uk/files/C0_3.jpg thats also a way to do it :P
[05:50:00] <archivist> just supporting a long shaft?
[05:50:33] <archivist> he is 20 miles from me
[05:54:07] <mrsun> nah driving the little lathe with the big lathe :P
[06:58:19] <jthornton> dang I slept in late
[08:05:20] <ReadError> happy new years everyone
[08:18:10] <r00t4rd3d> i liked the old year better
[10:53:03] * JT-Shop needs to cobble up a back gauge for the H-Frame press brake
[11:26:52] <tjb1> Everyone is still plastered aye
[11:27:40] <archivist> I wish
[11:40:51] <JT-Shop> not me, I don't like to cross the edge
[11:41:48] <tjb1> I haven't found a beer that doesn't taste like camels dung yet
[11:42:21] <JT-Shop> I can't say that I've made that comparision yet
[11:45:07] <tjb1> Its accurate
[11:52:52] <archivist> my knowledge of camels dates back to early 1960's and I was not allowed beer then
[12:24:59] <IchGuckLive> hi all in 2013
[12:25:09] <L33TG33KG34R> archivist: sorry... I am intending on working on aluminum. I am building a CRP 2448
[12:26:49] <IchGuckLive> L33TG33KG34R: nice mashine layout
[12:26:53] <awallin> L33TG33KG34R: are you "big ape" on cnczone?
[12:27:00] <L33TG33KG34R> no
[12:27:02] <IchGuckLive> L33TG33KG34R: can you reduce your nichk ?
[12:27:21] <IchGuckLive> l33 where are you from
[12:27:32] <IchGuckLive> Europ
[12:27:32] <L33TG33KG34R> this is the build thread
http://www.cnczone.com/forums/diy-cnc_router_table_machines/162888-crp2448_build_my_first_cnc.html
[12:27:35] <L33TG33KG34R> Canada
[12:27:38] <IchGuckLive> ok
[12:27:44] <ReadError> hey guys
[12:27:51] <ReadError> i had an idea and was wondering if its bad
[12:28:01] <ReadError> is there a stone you can chuck in a lathe
[12:28:02] <IchGuckLive> cnczone is blocked in europ true to mailbot service
[12:28:09] <ReadError> and actually use the lathe to sharpen bits?
[12:28:30] <archivist> ReadError, naughty, dont
[12:28:45] <awallin> IchGuckLive: I can get to cnczone, but both firefox and google give a warning that must be bypassed
[12:28:50] <ReadError> ah archivist
[12:28:56] <ReadError> thought it might work well ;(
[12:28:57] <L33TG33KG34R> yeah, same here
[12:29:05] <archivist> L33TG33KG34R, is that rigid enough for aluminium
[12:29:06] <IchGuckLive> awallin: i can not bypase
[12:29:12] <L33TG33KG34R> yes, very
[12:29:27] <awallin> IchGuckLive: maybe your ISP is blocking the site?
[12:29:27] <L33TG33KG34R> it may not look like it but its quite heavy
[12:29:50] <awallin> IchGuckLive: try something like hidemyass.com ?
[12:29:51] <IchGuckLive> L33TG33KG34R: i woudt wonder if that layout can handle real alu
[12:29:53] <archivist> weight does not equal rigid design :(
[12:29:54] <ReadError> i wouldnt go there
[12:30:06] <ReadError> it has a shitload of trojans
[12:30:22] <L33TG33KG34R> I know but it can work with aluminum quite easily
[12:30:39] <IchGuckLive> l33 up to you
[12:30:46] <awallin> ReadError: any of those trojans work on linux?
[12:30:53] <L33TG33KG34R> lol
[12:30:56] <IchGuckLive> l33 what size you gone build
[12:31:11] <ReadError> awallin: im sure there are some out there
[12:31:13] <L33TG33KG34R> 24" x 48" working area
[12:31:22] <L33TG33KG34R> thus CRP2448
[12:31:23] <ReadError> archivist: why is that sharpening method bad?
[12:31:26] <archivist> L33TG33KG34R, rack drive has backlash unless well controlled
[12:31:49] <archivist> ReadError, angle and grinding dust on the lathe
[12:31:52] <ReadError> http://www.cncrouterparts.com/crp2448-2-x-4-cnc-router-kit-p-164.html
[12:31:55] <ReadError> that looks nice L33TG33KG34R
[12:31:59] <IchGuckLive> l33 ithink it will kill you O.O
[12:32:26] <L33TG33KG34R> you should see it working with aluminum...
[12:32:29] <ReadError> archivist: i got a blank, i need to try and grind it
[12:32:53] <archivist> ReadError, get a cheap bench grinder
[12:32:57] <ReadError> im pretty sure ill manage to make it less sharp than it was when i started ;/
[12:33:12] <ReadError> i have a bench grinder
[12:33:26] <IchGuckLive> ok i see
[12:33:37] <ReadError> im just not confident in my ability to actually do it
[12:33:47] <ReadError> (atleast not without burning myself)
[12:34:29] <archivist> light touches to the grinding wheel
[12:36:14] <ReadError> sliptonic gave me a good link
[12:36:18] <ReadError> http://www.neme-s.org/Tubalcain/machine_shop_tips.htm
[12:37:10] <IchGuckLive> someone has sean sliptonic today
[12:37:23] <archivist> that is not the real late tubalcain
[12:38:02] <archivist> ReadError, the real one wrote in model engineer magazine
[12:39:34] <archivist> ReadError, the real one was
http://en.wikipedia.org/wiki/Tom_Walshaw
[12:58:44] <sliptonic> archivist: I think even the "real" one borrowed the name:
http://en.wikipedia.org/wiki/Tubal-cain
[12:59:21] <sliptonic> I've really liked the videos from the current Tubal Cain though. I've learned much from the guy.
[13:00:33] <archivist> yes but I think the current is hanging on the british ones coat tails :)
[13:02:26] <sliptonic> I think in one of the videos he mentions Walshaw and gives him props.
[13:12:33] <ReadError> still
[13:12:37] <ReadError> good videos none the less
[13:12:56] <ReadError> been watching them, have to sit at computer for work, but theres no work to do :(
[13:54:28] <L84Supper> has anyone heard any news on HeeksCAD?
[15:43:48] <orr_> is export CC=gcc-4.6 right for ubuntu?
[15:44:23] <orr_> after this gcc -v says 4.7 still
[16:06:40] <DJ9DJ> gn8
[16:17:26] <mk0_> exit
[16:37:01] <JT-Shop> http://www.youtube.com/watch?v=ffD8sZEQ69w
[17:16:48] <ReadError> so
[17:16:57] <ReadError> turns out ive been using the wrong direction tool
[17:17:12] <Tom_itx> woops
[17:17:13] <ReadError> i thought the shorter side of the bit was to go in the direction of the cut
[17:17:15] <ReadError> yea ;/
[17:17:40] <Tom_itx> cut better now?
[17:17:56] <ReadError> ill test here in a few, just got a print going
[17:20:06] <ReadError> im still not sure about my depth of cut per pass
[17:20:22] <Tom_itx> depends on several things
[17:20:24] <Tom_itx> HP for one
[17:20:32] <ReadError> yea not much HP here
[17:20:38] <ReadError> tiny lathe..
[17:20:48] <Tom_itx> how big is the head?
[17:20:57] <Tom_itx> chuck..
[17:23:22] <ReadError> 4" i think
[17:24:36] <ReadError> oops, 3.25"
[17:25:26] <ReadError> http://www.youtube.com/watch?feature=player_detailpage&v=pxmHsDroEDI#t=210s lol
[17:25:47] <ReadError> i dont think mrpete like china that much
[17:26:38] <Tom_itx> how much were you taking per pass?
[17:26:48] <ReadError> oh not much at all
[17:26:53] <ReadError> ill try and go a little deeper
[17:26:58] <Tom_itx> .020-.050" shouldn't be out of the question
[17:27:04] <ReadError> would too shallow of a pass cause more chatter?
[17:27:10] <Tom_itx> mine will do more
[17:27:18] <Tom_itx> i doubt it
[17:27:26] <Tom_itx> too much will
[17:27:48] <Tom_itx> there are lots of things that contribute to chatter
[17:36:34] <tjb1> https://dl.dropbox.com/u/3090951/Screen%20Shot%202013-01-01%20at%206.22.20%20PM.png
[17:39:29] <ReadError> wish my highschool had a metal shop class
[17:39:33] <ReadError> i took auto and wood
[17:41:07] <Tom_itx> i helped set up a metal lathe in my HS shop class
[17:41:18] <Tom_itx> large surplus lathe probably 15' long
[17:42:26] <tjb1> I went to Votech but it nearly screwed me with Math in College
[18:07:27] <Jymmm> Ezes ars kollage edjoomakated
[18:09:07] <Jymmm> tjb1: Is that a new nerd kink thing? "Oh yeah ... sqrt me up the dark matter baby!"
[18:09:22] <tjb1> Hmm?
[18:09:36] <Jymmm> tjb1: --> tjb1: I went to Votech but it nearly screwed me with Math in College
[18:09:49] <tjb1> Yeah I didn't get enough math
[18:09:58] <Jymmm> ALG1 ?
[18:10:09] <Jymmm> Pre Alg?
[18:10:15] <Jymmm> Fractions?
[18:10:30] <Jymmm> d) None of the above.
[18:11:38] <tjb1> I took those in like 9th grade but didnt get any calculus
[18:11:54] <tjb1> or advanced alg
[18:18:34] <ReadError> nerd kink is like
[18:18:48] <ReadError> "Im going to mount and then fsck you, I live wreckless"
[18:37:48] <Jymmm> ReadError: That sounds pretty tame/lame.
[18:38:48] <Jymmm> new printer, not bad so far
[18:39:09] <ReadError> like a 3d printer or printer printer?
[18:39:21] <tjb1> I'm betting printer printer
[18:39:36] <Jymmm> $40 Samsung laser printer
[18:39:42] <tjb1> I win.
[18:40:16] <Jymmm> USB, but I just shared it off the gf's imac in the office instead of plugging it into the usb port on the router.
[18:40:24] <ReadError> Fun scale: -3
[18:40:26] <ReadError> ;(
[18:40:29] <Jymmm> It's fast
[18:40:37] <ReadError> ya all i use is laser printers
[18:40:43] <ReadError> i dont print color really so its all i need
[18:40:51] <ReadError> i got a cheap 3-in-1 for copy/scan
[18:40:59] <Jymmm> Now, I just don't know what to do with the old printer
[18:42:03] <ReadError> extract the steppers of course ;)
[18:42:22] <Jymmm> It still works
[18:43:07] <Tom_itx> i got one of those cheap samsungs
[18:43:37] <Jymmm> It still works
http://upload.wikimedia.org/wikipedia/commons/6/60/HP_LaserJet_4P_001.jpg
[18:43:45] <Jymmm> I bought it brand new =)
[18:44:12] <Jymmm> Tom_itx: Yep
http://www.frys.com/product/6878246?site=sa:adpages%20page:P2_FRI%20date:122812
[18:44:52] <ReadError> the toner is where they get you
[18:45:01] <Jymmm> The GF needs to print, the LP likes to jam, but has NEVER been serviced either =)
[18:45:01] <Tom_itx> duh
[18:45:16] <Jymmm> LJ
[18:46:02] <Jymmm> ReadError: Yeah, looked at aftermarket toner cart for the samsung before buying, but I could almost buy a few of the printers instead of toner
[18:46:34] <Jymmm> I would have preferd the ether, but they wanted an extra $10 for that model.
[18:46:49] <Jymmm> $149
[18:47:05] <ReadError> you can try it yourself
[18:47:15] <Jymmm> try what?
[18:47:17] <ReadError> wont be any loss if you are already out of toner
[18:47:19] <ReadError> refilling it
[18:47:37] <kwallace> Just use a sharpie in your mill.
[18:47:39] <Jymmm> $6 for a refill kit + chip
[18:48:03] <ReadError> 6$ vs 75$
[18:48:04] <L84Supper> Samsung sometimes uses a fuse in the toner cartridge that they blow when it's "empty"
[18:48:08] <ReadError> seems like it would be worth a shot
[18:48:15] <Jymmm> kwallace: I can do that with the laser and powder coting paint
[18:48:33] <kwallace> Good idea.
[18:48:40] <Jymmm> kwallace: laser engraver that is
[18:48:53] <Jymmm> kwallace: And it DOES come with printer drivers =)
[18:49:13] <Jymmm> kwallace: no CAM to deal with
[18:49:41] <L84Supper> ah, but that Samsung uses a chip
[18:49:47] <kwallace> I wonder if that would work as a resist for etching PCBs?
[18:50:24] <Jymmm> ReadError:
http://www.amazon.com/Samsung-ML2525-SCX4600-SCX-4623-MLT-D105L/dp/B004PP8DN2/ref=pd_sim_e_1
[18:50:31] <Jymmm> L84Supper:
http://www.amazon.com/Samsung-ML2525-SCX4600-SCX-4623-MLT-D105L/dp/B004PP8DN2/ref=pd_sim_e_1
[18:50:34] <L84Supper> you can use many types of paint as as etch resist that you can laser engrave off
[18:51:04] <Jymmm> L84Supper: In this ase, the laser fuses the powder paint
[18:51:14] <Jymmm> case
[18:51:54] <L84Supper> Jymmm: yes, it's also a way of doing selective powder coating/printing on non-planar parts
[18:52:12] <Jymmm> L84Supper: If you engrave something, you then fill it with powder paint, drop the power a bit, run the engrave job again, and it fuses the paint in the engraved area
[18:52:38] <L84Supper> Jymmm: yes, i know, I'm working on a 4-color process for that
[18:52:43] <Jymmm> You can do it on the surface too, but looks nicer recessed
[18:53:18] <Jymmm> L84Supper: but, have you done it yet?
[18:53:54] <L84Supper> Jymmm: yes, I also develop the polymer powders
[18:54:05] <Jymmm> why?
[18:55:50] <L84Supper> powder coatings are pretty crude and are designed for decorative purposes
[18:56:31] <L84Supper> I'm developing functional powders for applications in electronics
[18:57:15] <t12> like conductive/resistance/insulating?
[18:57:22] <L84Supper> also process color so you can decorate with powder for producing full color images, not just mono
[18:57:59] <L84Supper> t12: yes conductive, dielectrics, insulators, semiconductors
[18:58:56] <L84Supper> and also the printers with LinuxCNC inside
[19:03:50] <L84Supper> the nice part is that you can use the same compounds used or very similar that are used in traditional electronic components
[19:04:16] <L84Supper> so the final products are very similar in electrical characteristics
[19:04:44] <L84Supper> except for semiconductors
[19:26:24] <ReadError> managed to confuse myself again
[19:26:25] <ReadError> http://dl.dropbox.com/u/25091878/Photo%20Jan%2001%2C%208%2012%2039%20PM.jpg
[19:26:36] <ReadError> whats the difference between A & B?
[19:26:45] <ReadError> i realize what the L & R are for
[19:26:50] <ReadError> but A and B not so much
[19:27:04] <ReadError> is A for cutting a shoulder ?
[19:28:03] <t12> http://images2.mcmaster.com/Contents/gfx/large/3240al1l.png?ver=11546334
[19:28:41] <ReadError> so what would be used to just do straight cuts on a part?
[19:28:53] <ReadError> length wise
[19:29:15] <tjb1> Depends which way you are turning
[19:29:19] <t12> http://images2.mcmaster.com/Contents/gfx/large/3367al2l.png?ver=9790199
[19:29:28] <tjb1> B would be for a shoulder to the right, A would do a shoulder to the left
[19:29:46] <tjb1> Wait nevermind...
[19:30:03] <ReadError> ahhh i need FR
[19:30:14] <ReadError> 1st time ive seen one straight across like that..
[19:30:40] <tjb1> GR with a radius would probably be better
[19:35:03] <tjb1> ReadError: Doesn't your toolpost rotate?
[19:38:15] <tjb1> http://sphotos-c.ak.fbcdn.net/hphotos-ak-ash4/301749_354662661299006_116492917_n.jpg
[19:40:02] <ReadError> it does
[19:40:03] <ReadError> soooo
[19:40:08] <ReadError> i just cut my 1st bit
[19:40:11] <ReadError> pic coming.
[19:40:55] <tjb1> Well the AL and BL can be used about the same then, just rotate the toolpost...
[19:42:35] <ReadError> http://dl.dropbox.com/u/25091878/Photo%20Jan%2001%2C%208%2028%2029%20PM.jpg
[19:43:06] <skunkworks> ReadError: pretty!
[19:43:14] <ReadError> got a better pic coming
[19:43:23] <ReadError> i wasnt sure about all the angles and stuff, i just kinda guessed
[19:43:34] <ReadError> http://dl.dropbox.com/u/25091878/Photo%20Jan%2001%2C%208%2029%2007%20PM.jpg
[19:43:39] <skunkworks> when I grind them - it is all 'what looks good'
[19:43:54] <ReadError> well thats not a good pic either
[19:44:40] <ReadError> lets try this again
[19:45:21] <ReadError> http://dl.dropbox.com/u/25091878/Photo%20Jan%2001%2C%208%2031%2051%20PM.jpg
[19:45:43] <ReadError> i might need a finer stone not sure...
[19:46:14] <skunkworks> hmm - That looks like the angle of the top part is not negative.
[19:46:32] <skunkworks> but it is hard to tell
[19:46:42] <ReadError> well my holder is straight
[19:46:48] <ReadError> so i was under the impression it should be flat
[19:46:57] <tjb1> Why aren't you using the inserts?
[19:47:07] <ReadError> idk
[19:47:14] <ReadError> i kinda just wanted to try sharpening one ;)
[19:47:21] <ReadError> those insert deals, are cheap HF stuff
[19:49:53] <archivist> I use a flat top for brass turning
[19:50:59] <skunkworks> I am talking about the edge - the bottom half looks pretty negative - but the top half does not.
[19:53:29] <archivist> yes the side has to have a clearance angle
[19:55:35] <ReadError> so bring in the bottom some?
[19:55:57] <ReadError> on the long cutting side?
[19:56:20] <ReadError> woh i think i turned this into a magnet
[19:56:27] <ReadError> it sticks to the 1-2-3 block now
[19:57:22] <archivist> http://www.steves-workshop.co.uk/tips/toolgrinding/toolgrinding.htm
[19:57:42] <archivist> relief angle
[20:17:42] <Tom_itx> i think my holder holds the tool at a good relief angle so i don't generally cut one
[20:17:51] <ReadError> http://dl.dropbox.com/u/25091878/Photo%20Jan%2001%2C%209%2003%2036%20PM.jpg
[20:18:00] <Tom_itx> i leave the top flat
[20:18:05] <Tom_itx> and relief the sides
[20:18:17] <ReadError> http://dl.dropbox.com/u/25091878/Photo%20Dec%2030%2C%208%2010%2007%20PM.jpg
[20:18:20] <ReadError> that was the other day
[20:18:43] <Tom_itx> where's today's cut?
[20:18:51] <ReadError> http://dl.dropbox.com/u/25091878/Photo%20Jan%2001%2C%209%2003%2036%20PM.jpg <---
[20:19:13] <Tom_itx> little better ehh?
[20:19:19] <ReadError> yea getting there
[20:19:23] <ReadError> still need alot of work
[20:34:59] <archivist> with a long thin shaft a long way out the chuck, use a lighter (thinner) cut
[20:35:17] <Tom_itx> and a live center if necessary
[20:35:35] <Tom_itx> archivist is that your tool tutorial or someone else's?
[20:35:43] <archivist> not me
[20:35:55] <archivist> a random one I googled
[20:40:21] <ReadError> Tom_itx, you know that SeeMeCNC guy in the reprap chan ?
[20:40:29] <ReadError> he did a google hangout webshow today
[20:40:37] <Tom_itx> huh
[20:40:38] <ReadError> showed everyone around his shop
[20:40:56] <ReadError> lots of nice stuff there
[20:41:19] <ReadError> http://dl.dropbox.com/u/25091878/Photo%20Jan%2001%2C%209%2026%2059%20PM.jpg
[20:41:24] <ReadError> now im cooking with butter!
[20:42:03] <ReadError> completely useless part but i managed to get a clean cut finally
[20:43:10] <archivist> note the cut also sounds nicer on a good cut
[20:43:57] <ReadError> i need some little shims i think
[20:44:02] <ReadError> to adjust tool height
[20:44:25] <archivist> very important
[20:46:18] <Tom_itx> yeah i was gonna suggest that
[20:46:42] <Tom_itx> my lathe has a cradle type holder with moon shaped wedge for that adjustment
[20:46:47] <ReadError> well i ground and cut with my 1st lathe bit today!
[20:46:56] <ReadError> thats my small victory for the day
[20:47:03] <Tom_itx> now face it off
[20:47:10] <Tom_itx> see how on center it is
[20:47:17] <ReadError> its below center ;)
[20:47:26] <ReadError> thats why i need some shims
[20:47:28] <skunkworks> ReadError: when is the lathe going to be cnc'ed
[20:47:39] <ReadError> skunkworks, once i learn how to use it i hope :)
[20:47:44] <Tom_itx> paper works if you have nothing else
[20:48:03] <ReadError> i have 5 extra nema 17's
[20:48:08] <Tom_itx> i keep some brass shimstock around
[20:48:10] <ReadError> they could work on a small lathe like this
[20:48:24] <Tom_itx> probably too small
[20:49:11] <ReadError> yea maybe
[20:49:33] <skunkworks> lantern tool post (think that is what those are called...)
[20:50:25] <Tom_itx> could be
[20:50:28] <Tom_itx> it's an older lathe
[20:51:08] <skunkworks> right
[20:52:02] <Tom_itx> http://tom-itx.dyndns.org:81/~webpage/sumo_files/lathe3.jpg
[20:52:09] <skunkworks> http://www.machine--tools.com/By-Location-/Florida-/Lantern-tool-post-atlas-craftsman-10-or-12-inch-lathe.ASPX
[20:52:37] <skunkworks> huh - that looks like grandpas lathe.
[20:52:39] <Tom_itx> that's what i've got
[20:52:43] <Tom_itx> heh
[20:53:22] <t12> heh i have one of those too
[20:53:26] <Tom_itx> i've made some pretty hefty cuts on it
[20:53:31] <t12> its annoying to center
[20:53:50] <Tom_itx> there's a trick to it
[20:54:01] <t12> do tell
[20:54:19] <Tom_itx> i pinch a piece of tool steel between the work and the tool and if it's vertical it's centered
[20:54:41] <t12> ah between
[20:54:44] <t12> the point and the work?
[20:54:55] <Tom_itx> the tool steel will be perpendicular to the bar
[20:55:10] <Tom_itx> so where it touches will tell you when it's on center
[20:55:17] <t12> cool i will try that
[20:55:18] <t12> next time
[20:55:27] <Tom_itx> just don't poke it too hard
[20:55:33] <Tom_itx> just enough to hold it
[20:55:49] <t12> i more just need to fit a better tool holder to the thing
[20:56:20] <t12> http://dodeca-t.com/photos/shop/_E088457.jpg
[20:56:49] <gene__> The lantern tool holder is, while fussy to set, the best of the lot
[20:56:54] <Tom_itx> nice size lathe
[20:57:15] <t12> some 1970's bulgarian direct import thing
[20:57:27] <t12> everyone at work decided it was crap cause they have no idea how to use it
[20:57:33] <t12> and locked it in some room for the last 8 years
[20:57:48] <t12> so i've been slowly getting it back into shape
[20:57:48] <gene__> All of the so-called quick change things hold the bit so far off the center of the compound, it makes them flex and tip over into the work
[20:58:23] <t12> need to make a new compound slide gib or restore the current one that will be
[20:58:24] <t12> uinteresting
[20:58:59] <skunkworks> http://www.youtube.com/watch?v=2fUcCoj7APQ&feature=share&list=UUHk52YjGT8HryRYmJKSl-lg
[20:59:28] <t12> oh man
[20:59:31] <t12> that looks like a finger eater
[20:59:45] <gene__> nice sized lathe, if its in east of the river, I'd like to have one like that, to cnc of course
[21:00:04] <t12> maybe i'll linuxcnc up that lathe
[21:00:09] <t12> once i hustle up funding
[21:00:23] <Tom_itx> looks like WW2 surplus
[21:00:30] <Tom_itx> with the belt system
[21:00:47] <skunkworks> it is just east of the river... ;)
[21:00:54] <Tom_itx> was set up for a main driveshaft system
[21:01:06] <Tom_itx> where the power was overhead and the belts ran down to the machines
[21:01:36] <skunkworks> yes - someone made a v-belt sleeve to slip over one of the flat belt pullys
[21:04:19] <t12> http://www.youtube.com/watch?v=FuwFlW3n_3E
[21:04:24] <t12> recursive modelbuilding
[21:05:19] <ReadError> http://www.youtube.com/watch?v=nebJ59TcYlQ
[21:05:35] <skunkworks> I don't have a good picture of the monarch
http://electronicsam.com/images/monarch/saddle.jpg
[21:05:35] <ReadError> how well do you suppose that holds tolerance?
[21:06:03] <t12> i think stewart platforms work pretty well?
[21:06:16] <t12> they make heavy load optical ones with pretty absurd precision
[21:06:47] * skunkworks wants to build a hexapod...
[21:06:54] <skunkworks> some day
[21:06:56] <t12> http://www.physikinstrumente.com/en/products/prdetail.php?sortnr=700895
[21:07:54] <ReadError> skunkworks: how are the results?
[21:08:01] <ReadError> i think it would be a fun project
[21:44:02] <L84Supper> have they tried making an even smaller lathe using that lathe?
[21:46:58] <L84Supper> nice hexapod
[21:50:13] <jdh> what's the most space efficient way to arrange 24 circles inside a circle? 25 would be ok also.
[21:50:51] <jdh> the application is 24 41mm LiFe batteries that have to fit in a cylinder
[21:51:48] <cradek> you will get hexagonal packing. put some pennies on the table and you will quickly see the pattern
[21:53:38] <cradek> https://en.wikipedia.org/wiki/Circle_packing_in_a_circle
[21:53:44] <cradek> wikipedia is awesome
[21:54:20] <cradek> heh it only goes up to 20
[21:54:42] <cradek> http://www2.stetson.edu/~efriedma/cirincir/
[21:55:51] <jdh> cool
[21:56:13] <cradek> cool, 18 and 19 are the same
[21:56:33] <cradek> so anyway I change my answer to I don't know
[21:56:33] <jdh> and 6 & 7
[21:56:41] <cradek> ah right
[21:57:06] <cradek> 17 is funky
[22:02:34] <jdh> I need a hole in the center though.
[23:19:02] <tjb1> night fellas
