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[00:00:02] <jthornton> seems to be the lightest weight one with good wheel options
[00:02:08] <Tom_itx> jt, what are you building now? a trike?
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[00:03:48] <Danimal_garage> no vids or pics yet, i just gotta hook up a couple relays and i'll take some
[00:04:02] <Danimal_garage> jthornton: good call, they're pretty bulletproof too
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[00:04:54] <Danimal_garage> the mustangs probably have the narrowest
[00:05:19] <Danimal_garage> jthornton: most 5 lug imports use the same lug pattern as a mustang.
[00:05:35] <Tom_itx> how does independent rear axles work out for those projects?
[00:05:40] <Tom_itx> ie a vet rearend
[00:05:49] <Danimal_garage> honda, toyota, nissan, etc
[00:06:06] <Danimal_garage> Tom_itx: too much work
[00:06:11] <Tom_itx> oh
[00:06:58] <Danimal_garage> jthornton: how are you going to make it work? are you only using the axles and differential?
[00:07:04] <Danimal_garage> making your own housing?
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[03:04:44] <Danimal_garage> yay machine is done
[03:05:59] <Danimal_garage> now i just need a reducing collet
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[03:44:37] <factor> What is a good stepper motor to get for say moving around a dremel
[03:49:24] <KimK> The one you can get a bargain on.
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[03:50:16] <factor> Was trying to make my own gears , but will hold off on that and just buy a geared one
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[03:52:56] <factor> http://www.robotshop.com/geared-bipolar-stepper-motor.html
[03:53:11] <factor> Was thinging of this one says 26 lb -in
[03:53:16] <factor> usually they talk about oz
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[04:01:00] <Tom_itx> http://ultimachine.com/catalog/electronics/motors
[04:01:04] <Tom_itx> factor
[04:01:17] <factor> looking
[04:01:49] <Tom_itx> yours would be rather slow since they're on a gearhead
[04:02:05] <factor> yes more torque though
[04:02:22] <factor> 118 rpms I am seeing
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[04:03:35] <factor> The one you posted is a 6.3 watts motor, pretty powerful
[04:06:03] <factor> I like the torue , but dont want it to take too long to get to one side or the other.
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[04:07:13] <KimK> Ah, yes, the old racer's saying: "Speed costs money, how fast do you want to go?"
[04:10:51] <factor> 150 turns gets me halfway.
[04:11:05] <factor> would like to have the 300 turns in 30 seconds
[04:11:35] <factor> so 300 rms and enough torque
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[04:16:11] <Danimal_garage> http://www.youtube.com/watch?v=2HdA2myl_oQ
[04:16:26] <Danimal_garage> took a vid of it running
[04:16:37] <Danimal_garage> spindle's off because of the noise
[04:17:31] <Danimal_garage> 600ipm in x and y, 400ipm in z
[04:17:58] <factor> nifty
[04:18:07] <Danimal_garage> thanks
[04:18:16] <factor> What steppers
[04:18:22] <Danimal_garage> servos
[04:18:51] <factor> so no holding torue
[04:19:13] <Danimal_garage> ok
[04:19:22] <Danimal_garage> and no missed steps
[04:20:37] <Danimal_garage> it's perfectly fine for engraving, which is the only reason why i built it
[04:20:51] <factor> I will be making one for cutting tile
[04:21:20] <factor> so need holding torue, but would like to get to one side or the other in a fairly fast manner
[04:21:25] <Danimal_garage> if i want to cut stuff, i'll use the mill
[04:22:19] <Danimal_garage> i have no problem with holding torque with the servos in my mill
[04:22:30] <Danimal_garage> and they're half the size of the steppers they replaced
[04:22:48] <Danimal_garage> and much faster, and more accurate
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[04:25:38] <pcw_home> Not sure what you are saying factor, both step motor and servo motor systems have holding torque
[04:25:40] <pcw_home> its just that the servo systems have dynamic torque (as much as needed) and step motor systems have static torque
[04:25:41] <pcw_home> (always apply full torque) Either will have trouble if you exceed their maximum torque capability
[04:26:43] <factor> yes static torque when not moving or being pushed back on
[04:28:40] <Danimal_garage> i'd rather have something that can compensate for increased loads and measure/correct for error rather than something that just hopes for the best
[04:29:01] <pcw_home> you cant have torque unless you are being pushed...
[04:29:40] <factor> well static as how much torque can it hold before moving
[04:29:53] <Danimal_garage> pcw_home: got the 7i33 today, and got the machine up and running, thanks again
[04:30:53] <pcw_home> Glad it worked out, looked at your video, seems like a nice machine
[04:31:10] <Danimal_garage> thanks, it works pretty well
[04:31:11] <factor> looks like I will have to go direct drive for any speed
[04:31:36] <Danimal_garage> seemed to engrave the stainless baseplate ok so i think it'll be good enough for engraving anything
[04:31:58] <pcw_home> Both servo and step motor systems have static torque in that sense
[04:32:25] <pcw_home> Di you mean to engrave the baseplate?
[04:32:29] <pcw_home> did
[04:32:35] <Danimal_garage> i'm replacing the existing baseplate with a thicker plate of aluminum most likely
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[04:32:53] <Danimal_garage> yes, the baseplate isn't as thick as i'd like, so i'm replacing it
[04:33:09] <Danimal_garage> it's only like .125" thick
[04:33:21] <edibrac> that's what she said?
[04:33:28] <Danimal_garage> giggity
[04:33:34] <pcw_home> I wonder how much backlash it has, looks pretty heavy
[04:33:48] <pcw_home> (for a printer)
[04:34:07] <Danimal_garage> pcw_home: not enough to worry me.
[04:34:22] <Danimal_garage> there's a little flex in the z axis, but it's not bad
[04:34:44] <Danimal_garage> it'll be fine for engraving
[04:34:46] <pcw_home> well good show, nice to see leftovers turned into a tool
[04:35:06] <Danimal_garage> thanks!
[04:35:43] <Danimal_garage> i just put in a ssr for the spindle, i'll control the speed with the knob on the router for now
[04:36:13] <Danimal_garage> i'll only have to adjust it for different materials, so not a big deal
[04:36:41] <pcw_home> Aluminum mainly?
[04:36:47] <Danimal_garage> yea
[04:36:58] <Danimal_garage> ti and ss sometimes, but not as often
[04:37:35] <Danimal_garage> i cut about .01" deep into the stainless baseplate, that's deeper than i'd ever really go
[04:37:44] <Danimal_garage> and it cut ok
[04:38:08] <pcw_home> Neat, so just for (permanent) marking
[04:38:33] <Danimal_garage> a little noisy because it's sheetmetal, which is why i want to put in a nice thicker plate, and i'll shim it to level it
[04:38:41] <Danimal_garage> yea, basically
[04:39:12] <Danimal_garage> i could have done it on the cnc mill, but with a 6krpm spindle and somewhat slow acceleration, it would take too long
[04:39:28] <Danimal_garage> this thing will do 35krpm and 600ipm
[04:39:44] <Danimal_garage> the accel is set to 90
[04:40:21] <pcw_home> much more appropriate for small bits
[04:40:26] <Danimal_garage> yea
[04:40:42] <pcw_home> maybe PCB routing as well?
[04:40:45] <factor> <Tom_itx>The KYSAN site has some good data calcs
[04:40:46] <Danimal_garage> plus the mill pays the mortgage, so i hate tying it up for stuff like that
[04:41:04] <factor> http://dnn.mandeeps.com/Portals/0/LiveContent/927/Flash/Calculator.swf
[04:41:10] <pcw_home> well getting past this old guys bedtme, bbl
[04:41:24] <Danimal_garage> pcw_home: i can't see myself ever cutting a pcb, but i'm sure it would do ok for that
[04:41:36] <Danimal_garage> goodnight!
[04:42:02] <pcw_home> ya spec wise sounds like a pcb router
[04:42:04] <pcw_home> 'nite
[05:00:38] <factor> some of these KYSAN motors will kick it at 5000 pps
[05:00:41] <factor> nice
[05:00:45] <factor> with no load
[05:00:53] <factor> to move from one side to the other
[05:01:29] <factor> would get me fomr one side to the other in 12seconds
[05:01:33] <factor> that will work
[05:02:06] <factor> 10 watt stepper motor
[05:03:10] <factor> http://www.kysanelectronics.com/Products/datasheet_display.php?recordID=6415
[05:03:57] <factor> trying to find the price.
[05:04:36] <factor> about $22
[05:04:38] <factor> nice
[05:07:42] <factor> but also just have my controller kicking out 1000 pps max right now
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[05:09:01] <factor> which puts it at from one side to the other in 1 min. which is what I was looking for.
[05:09:58] <factor> ok thanks all for the help
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[10:30:47] <Loetmichel> mornin'
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[12:31:33] * anonimasu is painting the lathe
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[13:04:39] <jthornton> what color?
[13:21:40] <anonimasu> white
[13:22:46] <anonimasu> tho, I need to go and buy clearcoat someday soon
[13:22:58] <anonimasu> to paint the chip pan and the crosslide
[13:23:04] <jthornton> white would blend in with my shop
[13:23:40] <anonimasu> white and a few pieces will still be left green like the base of the machine
[13:23:47] <anonimasu> tho everything else will be painted
[13:23:49] <anonimasu> :)
[13:24:52] <anonimasu> tho, right now im stuck gotta paint the crosslide 2 more times and the paint takes 12 hours to dry
[13:25:03] <anonimasu> and sand between the layers
[13:25:56] <anonimasu> I hate it.
[13:26:08] <anonimasu> (the process) but it's rewarding in the end
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[13:31:04] <jthornton> oil base paint?
[13:31:19] <anonimasu> hammerite
[13:32:43] <jthornton> nice
[13:35:09] <Loetmichel> anonimasu: use 2k epoxy paint!
[13:35:13] <Loetmichel> 20 minutes ;-)
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[13:40:43] <anonimasu> Loetmichel: then i defenetively need to spray it
[13:40:54] <anonimasu> im painting with brush and sanding between coats :)
[13:41:23] <anonimasu> the clearcoat is like that
[13:41:27] <anonimasu> 2 component
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[13:45:41] <anonimasu> awallin: I'd like that paper someday :)
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[13:47:43] <awallin> anonimasu: I think I dl'd the nurbs-paper at work, remind me tomorrow
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[13:57:13] * anonimasu craves for a surface grinder
[14:08:54] <jthornton> interesting application note for Hammerite "Each additional coat must be applied within 4 hours or after 14 days of drying."
[14:10:52] <Loetmichel> jthornton: isnt there silicone in hammerite?
[14:11:05] <Loetmichel> for the " dent"-effect?
[14:11:33] <jthornton> I was looking at the smooth enamel finish
[14:11:34] <Loetmichel> (so the paint looks loke hammered steel afterwards)
[14:11:43] <Loetmichel> ok
[14:11:44] <jthornton> http://www.masterchem.com/masterchem/v/index.jsp?vgnextoid=a4e390033f9ff110VgnVCM1000008a05d103RCRD
[14:11:47] <Loetmichel> was a thought
[14:11:56] <jthornton> msds is in that link
[14:13:14] <Loetmichel> i see
[14:14:22] <Loetmichel> i thought of the silicone used for the hammered look, that has similar properties: paint "wet in wet" OR wait until hardened throughly and then use silicon remover before second layer ;-)
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[14:27:42] <anonimasu> im painting the glossy white one
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[14:44:55] <jthornton> you got any photos of it?
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[15:06:30] <anonimasu> not after painting
[15:06:46] <anonimasu> http://ah.io23.net/ul/files/IMAG1571.jpg
[15:06:47] <anonimasu> befor
[15:07:25] <syyl> is this going to be your cnc?
[15:08:22] <anonimasu> yes
[15:08:47] <syyl> looks pretty sturdy for such a little lathe
[15:08:51] <syyl> especialy the saddle
[15:08:57] <anonimasu> it's a retrofit, cleaning and swapping bearings and cleaning the screws
[15:09:15] <anonimasu> yep, it's stable
[15:09:33] <anonimasu> this is the machine im hoping for insane precision on
[15:09:34] <anonimasu> :p
[15:09:41] <syyl> ;)
[15:09:47] <anonimasu> (dual balnuts in every axis)
[15:10:09] <jdhNC> looks like my 9x20 stand
[15:10:25] <anonimasu> and like three bearings in duplex for the screws
[15:10:48] <syyl> go home, mori seiki and monfors, there comes anonimasu :D
[15:11:10] <anonimasu> hehe
[15:11:14] <anonimasu> it's a denford actually
[15:11:27] <anonimasu> im hoping it'll be good enough to run som series production at work
[15:11:31] <syyl> do you got a tailstock for it?
[15:11:36] <anonimasu> yes
[15:11:54] <anonimasu> tho it needs a bit of adaptation so i can move it with pneumatics
[15:12:00] <syyl> :)
[15:12:10] <anonimasu> i think there'
[15:12:14] <anonimasu> 's a steady rest also
[15:12:15] <syyl> are you going for a bar feeder?
[15:12:22] <anonimasu> not for a start
[15:12:32] <anonimasu> im imagining a half bar feeder
[15:13:26] <anonimasu> i dont see a point in a full length magazine
[15:13:35] <syyl> that could be a possibility
[15:13:39] <anonimasu> gotta find a huydralic chuck for cheap first
[15:13:41] <syyl> http://www.youtube.com/watch?v=pfq0Rhivlsc
[15:13:55] <syyl> pull the bar our of the spindle after paring of
[15:14:06] <anonimasu> that's my plan :)
[15:14:22] <anonimasu> but the chuck is a issue
[15:14:48] <anonimasu> as i dont have huydralics on the machine it's more limited
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[15:16:46] <anonimasu> we'll see where it goes, i'd be damn happy to make chips next week
[15:16:48] <anonimasu> :)
[15:17:05] <anonimasu> syyl: next machine to get fixed is the schaublin sv13
[15:17:25] <syyl> yeah
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[15:17:53] <anonimasu> I have a high speed spindle 22krpm that will go on it as it'll be cutting pretty much aluminium
[15:18:15] <anonimasu> and the same motors as on the lathe
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[15:27:04] <anonimasu> damn, no rs232 adapter..
[15:27:06] <anonimasu> hand programming day.
[15:37:15] <Danimal_garage> hi
[15:37:34] <Danimal_garage> mornin jthornton
[15:39:42] <jthornton> Hi Dan
[15:40:17] <anonimasu> facing the plate now :)
[15:40:23] <anonimasu> oh yeah, no toolchanging either
[15:40:52] <jthornton> make one
[15:41:05] <Danimal_garage> jthornton:
http://www.youtube.com/watch?v=2HdA2myl_oQ
[15:41:10] <anonimasu> I cant actuate the drawbar
[15:41:16] <Danimal_garage> got it finished!
[15:42:25] <Danimal_garage> i just want to make a sheetmetal cover to cover the spindle
[15:43:19] <Danimal_garage> and i need a sturdier table, when the y axis moves, it rocks it pretty good
[15:43:49] <jthornton> sweet
[15:44:14] <Danimal_garage> 600ipm for x and y, 450ipm for z
[15:44:21] <Danimal_garage> accel is set at 90
[15:44:52] <jthornton> is that a vacuum table?
[15:45:08] <Danimal_garage> no, just a tooling plate made of 1/8" stainless
[15:45:14] <Danimal_garage> it came on there
[15:45:24] <Danimal_garage> i'm replacing it with some 3/4" aluminum
[15:45:56] <jthornton> some MIC plate?
[15:46:06] <Danimal_garage> something like that
[15:46:47] <Danimal_garage> i'll shim it to get it on plane with the spindle
[15:47:37] <Danimal_garage> i dont think milling it flat is an option in that machine unless i use a small cutter
[15:48:15] <Danimal_garage> it's just for engraving, i think shimming will be fine
[15:48:48] <jthornton> engraving your sprockets and stuff?
[15:48:51] <Danimal_garage> yea
[15:49:02] <Danimal_garage> thats the only reason i built it
[15:49:32] <Danimal_garage> it'll be faster than my mill and it won't tie it up
[15:49:41] <jthornton> back to being a plumber for me
[15:49:47] <Danimal_garage> ha
[15:49:50] <jthornton> finishing up the RO install
[15:49:56] <Danimal_garage> i'm out of here too
[15:50:01] <Danimal_garage> cool
[15:50:06] <Danimal_garage> take it easy
[15:50:29] <Danimal_garage> i'm getting a hang glider today!
[15:52:41] <pcw_home> Dont fly any higher than you wish to fall...
[16:12:06] <anonimasu> :)
[16:12:13] <anonimasu> good point
[16:12:30] <anonimasu> 1½ more op and i'll be doone with a motor mount
[16:12:39] <anonimasu> tho the chatter makes it look ugly..
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[16:31:35] <A2Sheds> heh pure craftsmanship here
http://www.youtube.com/watch?v=jrqnMQ9rPGo&feature=related starter motor bike 50 km/h
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[16:50:06] <anonimasu> soon done :)
[16:50:12] <anonimasu> tho today is not a good machinig day.
[16:55:03] <Tom_itx> why not?
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[16:56:09] <anonimasu> because im screwing things up.. and im lazy
[16:56:18] <anonimasu> ie, i could have gotten the compressor runnig
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[16:56:29] <anonimasu> and drilled all holes, now im going to do it by hand power later when i get home..
[16:56:36] <anonimasu> but it's a 5 minute walk..
[16:57:09] <anonimasu> and I had a cutter get dull on me..
[16:57:56] <IchGuckLive> Sunday wokoff ?
[16:58:44] <anonimasu> yep :)
[16:59:02] <anonimasu> im fixing the z axis motor mount for the lathe
[17:01:24] <anonimasu> tho last finish pass now
[17:01:57] <anonimasu> lesson of the day leave the carbide insert rougher i the spindle when you go home
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[18:38:13] <jthornton> plumbing done, now for a nap
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[19:59:08] <mikegg> ok, so I downloaded the source for emc2.5 pre
[19:59:15] <mikegg> i don't understand this bold note: If you have already installed EMC from the Live CD do not use --prefix/make install. Use the 'run in place' method (the default) instead.
[19:59:33] <mikegg> I have already installed emc from a live CD
[19:59:45] <mikegg> what is the run in place method?
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[20:15:04] <Tom_itx> mikegg, i installed it from here over the cd just fine:
http://buildbot.linuxcnc.org/
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[20:20:05] <mikegg> a
[20:20:13] <mikegg> ah hah. brilliant
[20:20:16] <mikegg> thanks!
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[21:26:15] <anonimasu> for whoever that asked me if i had pictures of the painted stuff
http://ah.io23.net/ul/files/IMAG1574.jpg
[21:29:52] <andypugh> What's the process for preparing and painting bare castings? I think there is some sort of putty involved?
[21:30:07] <syyl> yeah
[21:30:28] <andypugh> Becase my raw casting is _very_ raw.
[21:30:32] <syyl> i used car-putty
[21:30:38] <syyl> somethink like bondo
[21:30:41] <syyl> *thing
[21:30:42] <andypugh> Cataloy?
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[21:31:36] <syyl> then grind and smothen the putty, prime, paint
[21:31:40] <anonimasu> yep
[21:31:42] <andypugh> anonimasu: White? Isn't that rather an impractical colour? (It's the colour mine is too, oddly)
[21:32:50] <anonimasu> it gives better visibility i think
[21:33:11] <anonimasu> there'll be a coat or three of clearcoat on the chip pan(maybe on the rest too)
[21:34:24] <syyl> white implies a high-precision-toolroom-machine :)
[21:34:37] <syyl> white and light-grey are modern machine colors
[21:35:13] <anonimasu> i think it looks more modern then green :)
[21:35:46] <syyl> yes
[21:36:07] <anonimasu> since i took everything apart cleaned and stuff and measured it deserves new color :)
[21:36:45] <anonimasu> if it dosent perform i'll paint it brown. and sell it
[21:36:55] <andypugh> A better colour than that foul Reseda Green that all the stuff I used to design had to be in (inspection/calibration equipment standard colour)
[21:37:05] <syyl> hehe
[21:37:14] <syyl> reseda green makes people sad
[21:37:17] <anonimasu> i agree
[21:37:36] <syyl> damn
[21:37:36] <syyl> http://dl.dropbox.com/u/24396704/2011-06-27_14-50-22_297.jpg
[21:37:39] <syyl> to much green ;)
[21:37:50] <anonimasu> agreed
[21:38:03] <anonimasu> the schaublins are blue-greenish
[21:38:11] <anonimasu> alot less depressing
[21:38:33] <anonimasu> nice shop
[21:38:59] <syyl> :)
[21:39:12] <syyl> http://dl.dropbox.com/u/24396704/2011-06-27_14-50-46_229.jpg
[21:39:16] <syyl> more green and grey..
[21:39:20] <syyl> its our shop at work
[21:42:20] <anonimasu> tomorrow is the day for getting a motor mounted :]
[21:42:36] <syyl> i will wait for pictures
[21:42:58] <andypugh> syyl: I really like that style of Mill, but they cost so much, and CNC-converting would be a travesty.
[21:43:13] <syyl> yes
[21:43:31] <syyl> those are designed as manual mills
[21:43:35] <syyl> and should stay manual
[21:43:44] <andypugh> I did find a TOS clone of the Aciera, but with ballscrews already fitted. Not the right time and place though.
[21:43:59] <syyl> the big mill in the background is a cnc
[21:44:02] <anonimasu> http://ah.io23.net/ul/files/IMAG1572.jpg <- motor mount
[21:44:06] <syyl> but by default
[21:44:51] <anonimasu> just 7 more holes and it'll be done
[21:44:56] <syyl> ah cool
[21:44:58] <syyl> some chips
[21:46:33] <anonimasu> not happy with the surface on top tho..
[21:46:54] <anonimasu> I gotta fix it tomorrow
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[21:49:29] * anonimasu orders fresh limit switches
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[21:55:07] <andypugh> I have been doing motor mounts too:
https://picasaweb.google.com/bodgesoc/Gibbs?pli=1&gsessionid=luixP5ETFXxsWqg5oEt6Mg#5630434064687887650 and the following few pictures. (and a random picture of some magnetic spheres)
[21:56:10] <syyl> ah, nice wohlhaupter ;)
[21:56:42] <syyl> and the motor mounts look pretty robust
[21:57:33] <andypugh> I am trying to do things in the same way as Harrison might have done it, if they made a CNC version. :-)
[21:58:26] <andypugh> The Wohlhaupter was very busy today, making the bearing housing and motor register in that casting.
[21:59:32] <andypugh> The boring head is about 10x as stiff as my other milling machine, I get 0.1mm oval holes :-(
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[22:00:01] <syyl> :(
[22:00:06] <andypugh> Luckily that isn't a huge problem for either of those bores.
[22:00:29] <syyl> we have two wohlhaupters at work, but i have very seldom the chance to use it..
[22:00:32] <andypugh> But on heavy cuts you can see the milling head wobbling from side to side.
[22:00:58] <andypugh> I have an even nicer one that is far too big for any of my machines.
[22:01:23] <syyl> hehe
[22:01:38] <andypugh> https://picasaweb.google.com/bodgesoc/Gibbs#5584383602073848802
[22:01:58] <syyl> oh
[22:02:05] <syyl> upa4 and upa3?
[22:02:10] <syyl> *guessing*
[22:02:13] <andypugh> Yes.
[22:02:28] <anonimasu> I'd love one of thoose with iso40 taper.
[22:02:29] <andypugh> I want a UPA2 and a UPA1 to complete the family :-)
[22:02:44] <anonimasu> from ebay.
[22:02:49] <andypugh> I made a BT30 taper for the UPA3.
[22:02:58] <anonimasu> did you grind it?
[22:03:25] <anonimasu> im playing with the thought if using the manual schaublin as grinder so I can make stuff super flat..
[22:03:34] <anonimasu> or round with the rotary table
[22:03:55] <anonimasu> tho, I gotta figure out how to make _good_ way covers
[22:03:57] <andypugh> No, I cheated. I bought a generic threaded boring bar arbour from ebay, and modified it to suit the Wohlhaupter attachment xheme.
[22:03:58] <syyl> i am lookign for a upa 1 / Mk3
[22:04:20] <syyl> maybe a upa2
[22:04:43] <andypugh> You know that the newer UPA heads have detachable shanks?
[22:04:52] <syyl> jep
[22:05:04] <syyl> looks like a short morsetaper iirc
[22:05:16] <andypugh> It's a really clever arrangment of pegs and threads.
[22:05:21] <andypugh> https://picasaweb.google.com/bodgesoc/Gibbs#5614119116650654722 and following.
[22:05:39] <syyl> ah right
[22:05:40] <andypugh> I used the same idea to extend the ballscrew on my milling machine.
[22:05:45] <syyl> with the differential screw
[22:07:58] <andypugh> The ballscrew does use a taper (7 degrees). I wanted something that would have no backlash, would be very concentric, and that could be attached/detached when down a hole (because of assembly sequence problems). the differential screw idea works a treat. You can see the hole that the allen key goes down in the Y-axis motor mount photos.
[22:08:18] <anonimasu> very nice stuff :)
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[22:09:08] <andypugh> I am also pretty pleased with the 3-prong clutch for mounting a manual handle if needed. I saw that in Machinerys Handbook, it only takes 3 cuts.
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[22:12:32] <anonimasu> syyl: do you think I can use a normal milling spindle to keep a wheel for grinding?
[22:12:45] <syyl> hmm
[22:12:48] <syyl> yes and no
[22:12:49] <syyl> :D
[22:12:54] <syyl> it could work
[22:13:04] <anonimasu> yeah speed will be low, but it's a fairly big wheel
[22:13:09] <syyl> but it wont be satisfying
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[22:13:31] <anonimasu> I can stick a support bearing on the other end
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[22:14:44] <anonimasu> not satisfactory?
[22:15:01] <syyl> dont think so
[22:15:27] <syyl> the milling machines spindle bearings are not made for grinding
[22:16:48] <anonimasu> shit, i forgot to order a wheel dresser.
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[22:19:44] <anonimasu> or I can make a mount for the toolpost grinder.
[22:19:45] <andypugh> The grinding spindles I have seen all seemed to use plain bearings. I am not sure if that is because they were old, or if it's considered better (stiffer? better damped?)
[22:20:21] <syyl> there are both, with spindle bearings and some with plain bearings
[22:21:00] <anonimasu> it's kindof stupid lots of little projects possible with a grinder
[22:21:20] <syyl> yeah :D
[22:21:34] <anonimasu> I need a vise for the small milling machine, and if i could grind i could just rough it on the big mill out of hard steel and finish grind it
[22:21:53] <syyl> i am in the lucky situation, that i can use our jung surface grinder at work for my special projects ;)
[22:22:20] <anonimasu> i'll buy one after the lathe and mill is done
[22:22:26] <anonimasu> and cnc it.
[22:22:45] <syyl> cnc everything
[22:22:47] <syyl> hmm
[22:22:51] <syyl> cnc coffeemaker
[22:22:54] <anonimasu> or simply automate it enough so i can set pass and oversteps and stuff
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[22:23:10] <syyl> most surface grinders have such automatics
[22:23:21] <anonimasu> and dro scales.
[22:23:32] <anonimasu> not the cheap ones
[22:23:32] <syyl> grind to a specified dimension
[22:23:33] <anonimasu> :)
[22:23:46] <syyl> right :)
[22:23:52] <anonimasu> 700eur will get me a decent manual grinder
[22:23:54] <syyl> jung grinders aren't cheap
[22:23:55] <syyl> :D
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[22:44:44] <Jymmm> http://www.youtube.com/watch?v=dUwMhHZLzUE
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[23:45:30] <mikegg> andypugh, can I take a look at your hal file using 3pwmgen ?
[23:46:18] <andypugh> I will see if I have one.
[23:54:39] <andypugh> mikegg: I can't find one on this computer. I might have the test config still on the other computer in the workshop, but it is 1am here.
[23:55:19] <andypugh> I have never actually used the 7i39 in anger.
[23:55:19] <mikegg> ok, no problem
[23:55:24] <mikegg> thanks for looking
[23:55:28] <mikegg> in anger?
[23:55:47] <andypugh> Hmm, yes, odd phrase.
[23:56:28] <mikegg> it operates similarly to the 8i20 doesn't it?
[23:56:35] <andypugh> I tried to use the little servos I have, but they had less torque and speed than my steppers.
[23:56:42] <mikegg> main difference is the interface, right?
[23:56:46] <andypugh> Yes.
[23:58:10] <andypugh> The 8i20 takes phase angle and current values from the bldc comp, whereas the three-phase PWM takes three PWM amplitudes. The actual information being represented is identical.
