#emc | Logs for 2009-10-18

[00:04:36] <jt-plasma> now the fun begins... all wired up and ready to set up a new config from scratch
[00:04:51] <cradek> RTFM!!
[00:04:57] <cradek> oh it's you :-)
[00:05:00] <jt-plasma> LOL
[00:05:38] <jt-plasma> I need a dual monitor setup here like I have at work so I can have the manuals open in the other monitor
[00:06:06] <andypugh> You could print them
[00:06:17] <jt-plasma> bbl I hear the dinner bell
[00:06:44] <jt-plasma> no printer out here but I could print over the network to the printer in the beer cave
[01:11:04] <LawrenceG> jymm, thanks for the links.... the temp controller looks interesting.... I need one for the kitchen oven.... the local appliance shop wants $300 for the right oven controller... now if I can just train the wife to setup the PID loops :}
[01:14:21] <jt-plasma> good luck LawrenceG
[01:14:33] <LawrenceG> hey john!
[01:14:56] <jt-plasma> * jt-plasma listens to Jimmy C. Newman singing Big Mamou
[01:15:04] <jt-plasma> hey LawrenceG
[01:15:23] <LawrenceG> I think those controllers would be great for the oven... space age digital dash
[01:17:07] <jt-plasma> hmmm. I think my config needs some work
[01:18:25] <jt-plasma> oh I know why it is not seeing my home/limit switches... I didn't tell it they are there :/
[01:18:41] <jt-plasma> but it does move :)
[01:19:07] <jt-plasma> LawrenceG: I have a plc controlling my smoker...
[01:21:44] <LawrenceG> jt-plasma, dont want a batch of jerky going bad..... I always wanted to do a still controller.... the chemical engineering dept had a great lab set up where I went to uni.
[01:22:13] <jt-plasma> * jt-plasma wonders if I need to add a base thread for my paraport or just put it on the servo thread
[01:22:29] <jt-plasma> Jerky is critical to not dry it out too much
[01:23:50] <jt-plasma> I make a mean soy jerky but for some reason my recipe pages are borked
[01:24:20] <jt-plasma> ahh a reflux still such fun
[01:26:16] <LawrenceG> corn mash in.... rocket fuel out :}
[01:28:24] <jt-plasma> Yep, the only problem is it makes me forget my name :/
[01:30:40] <jt-plasma> hmmm, my limit switches don't seem to find their way back to EMC
[01:37:12] <jt-plasma> the I/O board sees it...
[01:40:14] <jt-plasma> but if you don't do a paraport read you will never see it ...
[01:41:06] <andypugh> got a p-port in a thread in HAL?
[01:42:05] <jt-plasma> yea, I left my switches on the parport
[01:42:23] <jt-plasma> the 5i20 drives the steppers and reads the THC board
[01:42:46] <jt-plasma> one puzzle left the X axis won't move...
[01:44:48] <jt-plasma> dang them 16 bowls of chili I had for lunch are showing up now...
[02:05:44] <jt-plasma> Weee! it will home now
[02:10:10] <jt-plasma> say goodnight Gracy
[02:11:08] <jt-plasma> LawrenceG: HOME_FINAL_VEL = 1
[02:11:25] <jt-plasma> http://suburb.semo.net/jet1024/recipes/soy-jerky/soy-jerky.html
[02:11:57] <jt-plasma> ctrl-c not ctrl-v ... time to kick back
[02:16:36] <andypugh> You think you have problems. I use a Mac (Cmd-C for copy) but when in the VMWare EMC Ubuntu it is Ctrl-C. I think when I VNC to the real EMC box it is back to Cmd-C. And as for where the # key is on a UK keyboard being emulated, it can be any of shift-3, alt-3, shift-alt-3 or ;
[02:17:32] <jt-plasma> now your making me dizzy, I might not make it back to the comfort of my easy chair :)
[02:18:55] <andypugh> Anyone know the leadscrew diameter of the Denford Orac?
[02:19:43] <jt-plasma> I don't even know what that is
[02:20:45] <andypugh> CNC lathe made in my home town (Brighouse). I am bidding for some leadcrew covers from one on eBay, but I feel they might be too short and too small.
[02:21:58] <tom3p> jt-plasma: ( cajun stream to your music player )
[02:23:43] <jt-plasma> OH YEA cajun music
[02:24:00] <jt-plasma> makes me want to fire up the crawfish pot
[02:32:31] <jymm> jt-plasma: Joose just a good o' boy, ain't ya?
[02:34:02] <jt-plasma> yep
[02:34:48] <jt-plasma> say goodnight Gracie
[02:34:59] <jymm> G'night Grcie
[07:01:36] <Dave911_> Dave911_ is now known as Dave911
[07:23:30] <Dave911_> Dave911_ is now known as Dave911
[07:38:02] <EbiDK> EbiDK is now known as EbiDK|AWAY
[07:42:30] <Dave911_> Dave911_ is now known as Dave911
[08:58:18] <MarkusBec_away> MarkusBec_away is now known as MarkusBec
[12:21:43] <pjm> afternoon, anyone here using a 7i43 with emc2? I have a strange problem with my setup and need to pick some ones brain!
[12:27:33] <jthornton> go ahead and toss your question out
[12:28:01] <pjm> okey doky, well its to do with joint following errors
[12:28:32] <pjm> 95% of the time u can run the homing sequence perfectly, but very occasionally it will throw up a joint following error
[12:28:43] <pjm> u can run programs and it is perfect, no error
[12:28:54] <pjm> but manual jogging also results in a JF error
[12:29:30] <pjm> i basically migrated my timing info over from software stepgen to the 7i43 config
[12:29:38] <jthornton> do you use home_final_vel in your ini?
[12:30:04] <pjm> i do yes, i have it pretty slow
[12:30:10] <pjm> and have tried tweaking to down
[12:30:18] <pjm> but it is still erroring
[12:30:50] <pjm> i had another silly fault relating to a sets hal command, it was reporting i had provided 6 arguments when 2 were needed
[12:31:11] <pjm> turned out that there was non printable chars in the hal file that were being parsed by EMC2
[12:31:21] <pjm> 2 damn hours that took to find!!! grrr
[12:31:21] <jthornton> can you tell what part of the homing sequence that it errors on?
[12:31:49] <pjm> well it doesnt always get to the homing switch
[12:32:10] <pjm> it seems that it occurs on a trasverse movement, same when jogging
[12:32:36] <pjm> i just need a clue of where to start looking. when it was using software stepgen, i never received JF errors
[12:32:37] <jthornton> is it just on one axis?
[12:32:47] <pjm> it can be random
[12:33:10] <jthornton> stepper system?
[12:33:12] <pjm> this is the part i dont understand, why it is not always one axis
[12:33:21] <pjm> yes its stepper driven by a 7i43
[12:34:03] <jthornton> http://www.linuxcnc.org/docview/html//common_Stepper_Diagnostics.html#r1_2_1
[12:34:27] <pjm> the problem is that its only just started since using the 7i43
[12:34:35] <pjm> under parport there were never errors
[12:35:24] <pjm> i could use the 7i43 just for pwm gen for the VFD and also spindle encoder, and keep the motor control via the parports, but it just seems a total waste to do that
[12:36:11] <jthornton> yes, I agree. I have a 5i20 just to bring in a voltage from my plasma so it is driving the Geckos as well
[12:36:47] <pjm> ah yes, perhaps it is the way to go, although i'd like to move everything over to the mesa card
[12:37:05] <jthornton> did you read the link?
[12:37:36] <pjm> reading now yes
[12:39:35] <pjm> ok good there are some useful pointers there, I'll have a play
[12:39:56] <jthornton> ok
[12:40:07] <pjm> presumably the rtapi stuff isnt really applicable to the 7i43 since it is making the pulses
[12:40:32] <pjm> although i have the base period etc set to the same as it was with my stepper system
[12:41:16] <jthornton> your still connected to the parallel port with the 7i43 right?
[12:41:23] <pjm> yeah
[12:41:33] <pjm> but only for the low speed cmds to the 7i43
[12:42:26] <pjm> anyway i will have a fiddle with the parms again to see if i can stop it producing the following errors
[12:42:37] <jthornton> ok
[12:46:58] <pjm> anyway thanks for the link, i will work on that now
[12:48:21] <jthornton> np
[12:56:03] <MarkusBec> MarkusBec is now known as MarkusBec_away
[12:56:56] <MarkusBec_away> MarkusBec_away is now known as MarkusBec
[14:08:15] <pjm> jthornton - btw I think I have it sorted, my ferror was far too small, i've upped it a bit and so far have not had a single J-F error ;-)
[14:08:25] <pjm> and the 7i43 is generating steps nicely ;-)
[14:09:06] <jthornton> as they say down in Arkansas Sweet!
[14:09:47] <pjm> it is indeed, i'm just migrating all the config for the IO stuff across
[14:17:57] <pjm> btw my steppers are running with IMS483 drivers, they can run with 256uSteps per 'step' of the motor, is it best to run with higher microsteps now I have moved away from the parport? The IMS boards can clock steps in at 10MHz max
[14:20:08] <jymm> G'Morning People of Earth!
[14:21:37] <pjm> hi
[14:30:42] <jymm> Still trying to get used to the new LCD
[15:07:58] <jymm> SWPadnos: 1.5TB = $90 http://newspaperads.mercurynews.com/ROP/ads.aspx?advid=32664&adid=8459701&subid=27149057&type=
[15:12:29] <tomp> tomp is now known as tom3p
[15:12:32] <Dave911> I just bought a 1 TB seagate drive for $89 and I thought I got a good deal. You gotta buy two of those - otherwise how do you backup the first one?? ;-)
[15:12:57] <jymm> RAID
[15:13:04] <archivist> you need to backup the second as well....
[15:13:27] <tom3p> which came first the chicken or the backup?
[15:13:42] <jymm> The dumbass who didn't backup
[15:31:33] <AchiestDragon> the nightmares i have had in the past with windows backup ,, does not bare thinking about
[15:32:23] <jymm> Such a thng does not truly exist.
[15:33:26] <AchiestDragon> like you cant backup the windoes dir as it fails to backup some active files ,, if you do then the first you know about is if the worst happens and you need to restore the backup only to find that it trashes the system
[15:34:46] <AchiestDragon> worst i had was when upgrading from me to xp ,, backed up data files to cdr ,, upgraded to xp , then found as xp had writer software built in and the previous writer software was not xp compatable that the following happend
[15:35:42] <jymm> AchiestDragon: You NEVER EVER "Upgrade" M$ OS'es.
[15:35:49] <AchiestDragon> windows announced that the disk was still open session and said it must close it first , so let it do that , then it basicaly closed the sesson making the already writtend data appear as deleted
[15:36:20] <AchiestDragon> jymm: you do but better upgrading them to linux
[15:36:27] <AchiestDragon> :)
[15:36:27] <jymm> AchiestDragon: You NEVER EVER "Upgrade" M$ OS'es.
[15:37:17] <jymm> AchiestDragon: as far as backups go, one word... Virtualization.
[15:38:11] <AchiestDragon> lost more files dew to norton antivirus than to viruses
[15:38:26] <Dave911> Never upgrade - why would you...?? XP is it for me.. The backup issue with windows is solved with Acronis - works 100% of the time.
[15:38:28] <Dave911> How does virtualization help if the data on the drive you want is inaccessiable?
[15:39:01] <Dave911> You have to have data in two places or else you are dead meat eventually
[15:39:33] <AchiestDragon> i tend to use a "live backup method " basicaly inportant files are held on 2 seperate machines and on seperate drives
[15:40:29] <AchiestDragon> if one fails then you still have a working copy ,and duplicate to other machine as soon as posible
[15:41:57] <Dave911> Separate drives - separate computers < That is pretty good but it doesn't solve the lightning problem. I backup once in a while to a separate drive and then remove the drive and put it into a steel cabinet - even better would be a bank safety deposit box - I got the box but haven't done that yet. But I really should.
[15:42:45] <AchiestDragon> as to upgrading o/s or install fresh , remove drive with old data on , install new drive , install os and then insert old drive and copy inpportant data to new one , then remove that and keep that drive untuched as a backup
[15:42:46] <archivist> my website has the same database as home
[15:42:58] <archivist> backup and reomte
[15:43:25] <Dave911> How much website drive space do you have?
[15:43:26] <AchiestDragon> if the new drive fails then just insert old and you got the system backup and running in less time than it takes to install a program
[15:43:31] <tom3p> jymm: how do you use vm's as backup? can you restore? just make making vm's at end of day/time period?
[15:43:46] <archivist> as much as I want I self server
[15:44:14] <archivist> vm image
[15:44:42] <jymm> tom3p: Say you have XP installed as a VM on MachineA. Now, the mobo dies. You restore the VM to MachineB (totally diferent brand of mobo too), Done.
[15:45:13] <tom3p> so you dont 'restore', you just use vm image on new mobo?
[15:45:40] <jymm> tom3p: Sure, check out xen
[15:45:54] <AchiestDragon> fine unless you get hdd failure
[15:46:02] <tom3p> i'd think ubuntu would have fits if i changed the video and cpu... but i spose it'd just be aggravating, not death
[15:46:09] <jymm> AchiestDragon: that's what backups are for.
[15:46:31] <jymm> tom3p: It's a VM, the hypervisor takes care of all that.
[15:47:02] <tom3p> wow its in ubuntu repo
[15:47:56] <tom3p> ah, cool, yes, the parent system has the hardware environment figgered, and the vm just lives in there
[17:22:39] <spasticteapot> Does anyone know of a good table of information for milling various materials?
[17:23:04] <jymm> machinery handbook?
[17:23:27] <spasticteapot> I'm trying to figure out if I can get away with using a very powerful router (2+HP) and cutting slowly at reduced RPM, or whether I should just convert a proper vertical mill.
[17:23:33] <spasticteapot> jymm: Any good ones?
[17:23:36] <archivist> also depends on machine and size of cut and the wind direction
[17:23:46] <spasticteapot> Wind direction?
[17:25:18] <jymm> http://www.pdf-search-engine.com/machinery-handbook-pdf.html
[17:25:44] <archivist> what Im saying is some experience required, never try to cut cast iron on a router, some thinking required
[17:26:06] <jymm> Though, those are probably illegal
[17:26:23] <archivist> its not just a slow feed, some machines are just too flimsy
[17:35:37] <AchiestDragon> a 2hp motor on some routers would be like putting a v8 on a peddle bike ,, first time you come to some rough ground the frame would just colapse
[17:38:03] <AchiestDragon> usualy you would pick a machine made so the spindle power is matched not only to the machine but also to what material they intended it be used for
[17:38:20] <andypugh> I don't think a router would have the bearings to handle the cutting forces for very long.
[17:39:13] <andypugh> But considering you can cut cast iron with a chisel, it would definitely work if you were slow and gentle enough.
[17:39:53] <archivist> routers cant do slow
[17:40:21] <archivist> tool would heat up and melt
[17:40:54] <AchiestDragon> you could just grind microns of in each pass rather than trying to take mil's off each pass
[17:41:30] <andypugh> That would be my concern. But a small diameter solid carbide cutter would probably cope. It would be an interesting to calculate what diameter gives the correct surface speed for the router speed.
[18:24:46] <pjm> archivist , evening, how was the engineering show/
[18:24:47] <pjm> ?
[19:11:56] <issy> hi all
[19:33:15] <Guest189> anybody out there?
[19:34:10] <andypugh> No :-)
[19:34:34] <Guest189> haha
[19:35:08] <Guest189> need a kind fellow to answer a question about home/limit switches
[19:35:46] <andypugh> Might be best to ask, and then wait a while. Lots of people seem to skim every hour or so
[19:36:16] <Guest189> ahh ok
[19:36:38] <andypugh> Though if it is a very easy question, I might be able to answer
[19:37:01] <Guest189> im using combined min limit/home switches on x,y,z and seeing a "joint 0 on limit switch error"
[19:37:36] <andypugh> Is it on a hardware-inverted parallel port pin?
[19:37:53] <andypugh> Joint 0 will be x
[19:37:57] <andypugh> (probably)
[19:38:00] <Guest189> i do have the inversion set. however
[19:38:08] <Guest189> i hit home all axis
[19:38:28] <Guest189> and it the z axis starts to jog along until it hits the min axis limit switch
[19:38:31] <andypugh> I suspect that the limit is set as limit but not home, then
[19:38:38] <Guest189> then i see the error so it isnt immediate
[19:39:37] <micges> Guest189: do yuo have enabled HOME_IGNORE_LIMITS = YES on all axes ?
[19:39:53] <andypugh> Do you see it at the home switch, or before then>
[19:40:19] <andypugh> If it is coming up when you are not actually at the limit, then I suspect noise in your limit switch lines
[19:40:41] <Guest189> yep IGNORE = YES on all axis in the .ini file
[19:40:58] <Guest189> im right at the limit
[19:41:07] <Guest189> the z axis trips the switch
[19:41:14] <Guest189> then the window pops up
[19:41:52] <andypugh> I don't think z is axis 0, is it?
[19:42:05] <andypugh> So your limits might be cross-wired
[19:42:45] <andypugh> Can you trigger the limits manully ans look for the little glyps that pop up next to the axis position display in Axis?
[19:43:50] <Guest189> ahh
[19:43:53] <Guest189> i ll try that
[19:44:03] <Guest189> the little circle with the x through it
[19:45:29] <andypugh> I think that means "homed". It is a little arrow with a bar for "limit tripped"
[19:47:27] <cradek> do you have the limits all wired together to the same parport pin?
[19:48:50] <Guest189> i only have the max x,y,z switches wired in series
[19:48:54] <Guest189> ill have to doubt check
[19:49:45] <frallzor> hello boys
[19:50:19] <andypugh> We were all girls to you yesterday, I am not sure this is better
[19:50:33] <frallzor> :(
[19:51:06] <frallzor> allow me to show a thread about my mill on a forum
[19:51:22] <frallzor> in swedish, but the pics will talk much
[19:52:13] <frallzor> http://www.elektronikforumet.com/forum/viewtopic.php?f=3&t=35964 what do you think I can sell this "beast" for?
[19:52:37] <frallzor> around 300x800x200 travel
[19:52:40] <cradek> if you are homing Z but axis.0.max-limit-switch is triggered, you'll get an error because X is seen as on limit
[19:52:56] <Guest189> im going to check my wiring
[19:52:57] <cradek> if you are using limit switches as home, each must go to its own input
[19:53:35] <cradek> if only max x,y,z are series, you could home on the min limit switches instead of max
[19:53:58] <Guest189> yes
[19:54:10] <Guest189> each axis has its own min limit/home
[19:54:51] <Guest189> the xmax,ymax and zmax are in series and are sharing a single input
[19:55:07] <Guest189> i think its pint 15,13,12 for min/homes
[19:56:04] <cradek> and you are homing toward the min switches?
[19:56:18] <cradek> this sounds OK if so
[19:56:50] <andypugh> frallzor: Are you selling your project, or thinking of making them commercially?
[19:56:58] <frallzor> selling the project =)
[19:57:18] <frallzor> G540 controlling it all
[19:57:34] <Guest189> ok guys thanks for the slap upside the head
[19:58:09] <Guest189> apparently during my cleanup of the wiring two limits were swapped
[19:58:40] <Guest189> Doh
[19:58:48] <frallzor> andypugh any guess on what I can sell it for? =)
[19:59:06] <andypugh> Sorry, no. You could try cnczone.com
[19:59:21] <andypugh> It looks quite nice though.
[19:59:27] <frallzor> http://www.vimeo.com/user1988230/videos and some vids to show it off too :P
[20:00:59] <Guest189> isnt that quite a span (1m) for unsupported rails frallzor
[20:01:41] <frallzor> not really
[20:02:23] <frallzor> good enough for its purpose =)
[20:02:32] <Guest189> looking at your videos
[20:03:09] <Guest189> looks like you went down to a single rail
[20:03:13] <Guest189> looks pretty solid
[20:03:15] <Guest189> nice work
[20:03:35] <frallzor> yes, calculated the bending and found that 1 pair was enough for it
[20:04:56] <frallzor> but now I got a new little thing in the works, and I need financing so to speak :P
[20:05:11] <frallzor> and discovered I cant salvage a single part for the new one =)
[20:07:22] <andypugh> There are folks building similar devices on here who might want it, but none of them give the impression of having the money.
[20:07:47] <frallzor> well I rather not send stuff :P
[20:10:19] <frallzor> hah, how about milling an sales-add and having as add for selling? :P
[20:17:48] <tomp> tomp is now known as tom3p
[20:26:15] <pjm> this 7i43 is Excellant - I should have bought one years ago!!!
[20:26:35] <Guest865> pjm: how far along are you?
[20:26:46] <Guest865> Guest865 is now known as skunkworks
[20:27:11] <pjm> well i'm migrating my stepper machine away from parport stepgen to this 7i43
[20:27:42] <pjm> so have just finished the velocity mode stepgen element that provides a pulse train to my VFD for spindle speed - its working very well indeed
[20:28:29] <skunkworks> nice :)
[20:29:27] <pjm> yes it rocks bigtime
[20:29:39] <pjm> i cannot wait to test out the spindle encoder when its running at full tilt
[20:29:57] <pjm> finally i'll have a proper speed readout above 1200rpm!!
[20:30:29] <pjm> then i will add the spindle load monitoring
[20:30:56] <andypugh> Does EMC2 do adaptive feed?
[20:31:07] <pjm> i guess u could pid loop it?
[20:31:19] <pjm> take the spindle load and tweak the cutting speed or something
[20:32:09] <andypugh> Tweaking max-velocity would do the trick, but it would have a scary tendency to rocket into the work at zero load...
[20:33:10] <pjm> anyway its something to play with once its in a position to read back the cutting load
[20:34:01] <skunkworks> emc has an adaptive feed pin in hal
[20:35:24] <skunkworks> http://linuxcnc.org/docs/2.3/html/gcode_main.html#sec:M50:-Feed-Override
[20:36:59] <pjm> ah interesting, i must rtfm
[20:37:59] <andypugh> I keep meaning to
[20:39:24] <tom3p> "'adaptive feed', a HAL pin that can be used to scale the feedrate in real time. Simular to feedrate override, but can only vary from 0.0 to 1.0, and reacts much faster. Intended for use with EDM and other applications that require closed loop control of feedrate. "
[20:39:37] <pjm> ah yes also once the 7i43 stuff is finished, i'll add in closed loop spindle speed control
[20:55:19] <andypugh> I think it would need to go negative for EDM?
[20:56:27] <alex_joni> andypugh: it might, but that's not supported atm
[21:17:40] <mIreland> Hello again people of planet emc. I'm trying to cut 1/8NPT threads, and for that i need a taper. should i try to construct a threading cycle from spindle sync moves or can i trick the 'tapered beginning/end' to do the business?
[21:18:42] <SWPadnos> G33 (or whatever the threading G-code is) can do tapers. The only trick is that the Z value is along the hypoteneuse, not parallel to Z
[21:18:43] <micges> andypugh: can yuo tell when adaptive-feed could go negative?
[21:19:17] <andypugh> It can't, but for EDM you might want it to if the work shifts due to the relief of internal stresses
[21:19:59] <mIreland> thanks i thought so. anybody happen to have the numbers worked out?
[21:20:19] <SWPadnos> that's left as an exercise for the reader :)
[21:20:34] <SWPadnos> bbl
[21:20:48] <mIreland> yay my machinist bible gets to earn it's keep
[21:29:31] <tom3p> in edm the taper was ( the normal to the angled surface ) was based on the sine of the half angle ( the whole angle being side to side, the half angle being the ctrline to one side ) the zdrop * sine (angle/2) = distance to work
[21:31:34] <andypugh> Are we using different meanings of EDM here?
[21:31:56] <tom3p> spark erosion, erodieren, funkerodieren,
[21:32:28] <micges> obrobka elektroerozyjna ;)
[21:32:34] <tom3p> yah!
[21:33:37] <tom3p> thx, i'll save that one for searches ( polish right micges?)
[21:33:55] <micges> yes
[21:34:08] <andypugh> In that case I remain puzzled. Why would edm have an odd way of calculating angles?
[21:37:25] <tom3p> no, the overburn is the tool. the tool is not in z, it is normal to the surface of the tool ( a taper), the distance traveled in Z to move the tool in contact with the work is different from the distance from the tool to the work. ( the overburn is normal to the tool , no the axis )
[21:39:22] <tom3p> micges, nice http://m6.mech.pk.edu.pl/~skoczyp/UB/UB_04_EDM.pdf , thx again
[21:39:42] <andypugh> I was thinking in terms of wire erosion.
[21:40:24] <andypugh> And I confess I am baffled by that paragraph about overburns
[21:41:19] <micges> tom3p: welcome
[21:41:26] <tom3p> ah, doesnt apply to wedm much
[21:41:39] <tom3p> micges: i deal with page 13 a lot
[21:43:24] <micges> I'm trying to open that doc
[21:50:36] <micges> ok I see it
[21:51:15] <micges> tom3p: are you produce that kind of stuff with edm?
[22:04:16] <tom3p> edm sin of half angle http://imagebin.ca/view/cky4aU.html
[22:05:05] <tom3p> micges: i build machine that work on them. coolant holes, hole that blend gasses, pockets to relieve weight
[22:06:51] <tom3p> coolest new thing is 'turbulators, when the gas moves thru the tiny hole, it doesnt cool as whene there's undercut rings on the hole. the hole is may 1/2mm dia, 30mm deep, and the undercut grooves are maybe .75mm high and deep.
[22:11:34] <micges> I see
[22:13:06] <andypugh> tom3p: OK, I now see what you mean, but I don't get the relevance to adaptive feed?
[22:15:03] <tom3p> ha! no it was relevant to the guy looking at tapered threads
[22:16:00] <tom3p> he has to worry about Z drop and angled side motion
[22:20:08] <andypugh> Not really, the pitch is approximately the pitch, not the z-drop
[22:20:58] <tom3p> anybody using 'transmission'? i am dloading the gutenberg library dvd, and the stock version puked a lot. the devs told me to get ver 1.75 which ubuntu 8.04 can use as described here https://edge.launchpad.net/~transmissionbt/+archive/ppa
[22:21:13] <tom3p> andy the z drop, not the pitch
[22:22:32] <tom3p> to avaid... oops i just countersunk it too deep, oops the tapered thread is too shallow for the pipe plug to begin
[22:36:00] <micges> good night all
[22:43:10] <tom3p> nite
[23:05:59] <alex_joni> g'night all
[23:10:43] <tom3p> gnite
[23:11:50] <tom3p> i didnt know adobe reader 9 had a read out loud feature , for ubuntu view | read out loud
[23:29:45] <MarkusBec> MarkusBec is now known as MarkusBec_away