#linuxcnc | Logs for 2012-04-10

[00:03:46] <JT-Shop> what's the syntax to wait for an input in a M1xx bash file?
[00:08:49] <cradek> consider using M66 instead, but if you must use M1xx here are some clues: http://wiki.linuxcnc.org/cgi-bin/wiki.pl?CustomMcodesToHal
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[00:12:07] <JT-Shop> cradek, thanks
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[00:25:17] <Tecan> wholy man cradek you really modified the crap outa image-to-gcode lol
[00:25:36] <Tecan> i just found the orig copy from the site with a skull on it
[00:26:06] <Tecan> http://www.junktech.de/en/software/15-modified-heightmap-script.html
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[00:37:30] <cradek> the one that comes with linuxcnc is a zillion times better than what I originally wrote
[00:38:17] <Tom_itx> that's alot
[00:39:27] <cradek> only the basic idea and algorithm is the same - jepler rewrote the whole thing
[00:39:32] <JT-Shop> that is a bunch of numbers
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[00:40:15] <kb8wmc> cradek: I have been running the 2.5~pre and keeping up with the upgrades, should I install version 2.5?
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[00:43:07] <cradek> are you using the buildbot 2.5 packages?
[00:43:29] <kb8wmc> I have been
[00:43:53] <kb8wmc> have not had any upgrades in several weeks though
[00:43:56] <cradek> then you already have 2.5.0 and perhaps a change or two afterward (I think there were only doc fixes so far)
[00:44:04] <cradek> odd - you should have
[00:44:25] <kb8wmc> ok
[00:44:37] <Tecan> cradek in 2.5 you cant open image-to-gcode in the open menu of linuxcnc
[00:45:02] <kb8wmc> my last was .626
[00:45:13] <cradek> if you have the filter options set properly, you can just open the image and it will run image-to-gcode for you.
[00:46:02] <Tecan> thats what i mean its not in there to pick
[00:46:05] <cradek> kb8wmc: the latest on 2.5 branch should be dc10e7130a
[00:46:18] <Tecan> ngc is the only thing there
[00:46:18] <kb8wmc> will check
[00:46:25] <cradek> file/open, select an image file like a jpg?
[00:46:39] <Tecan> its not working here
[00:46:58] <cradek> then maybe your config doesn't have image-to-gcode set up as a filter
[00:47:14] <Tecan> oh that might be :) i just used a sample config
[00:47:14] <cradek> you could try the sim/axis config to see how it all works, I'm pretty sure it's set up there.
[00:47:25] <ssi> I bought three of those AMC drives
[00:47:47] <kb8wmc> my last was 626-g402b6cd
[00:48:40] <cradek> that's way way old
[00:48:52] <kb8wmc> oooohhh
[00:49:38] <djdelorie> cradek: there's nothing magic about the python-as-gcode stuff in linuxcnc, is there? With a config line, any language would be supported?
[00:49:41] <cradek> from January some time, just the start of the rebranding
[00:50:08] <cradek> djdelorie: nothing is magic. anything that spits out gcode on stdout makes a fine filter.
[00:50:14] <djdelorie> sweet
[00:50:38] <kb8wmc> I am going to check my software sources
[00:50:40] <cradek> I've used sed as a filter to read a very slightly different dialect of gcode
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[00:51:50] <kb8wmc> hmmm....I believe it is correct as follows: "ht--://buildbot.linuxcnc.org/ lucid v2.5_branch-rt"
[00:52:42] <cradek> did you censor your http?
[00:52:59] <kb8wmc> yes
[00:53:02] <cradek> but yeah I think that's what it should look like. what happens when you do apt-get update, apt-get upgrade?
[00:53:16] <kb8wmc> will do so right now....
[00:54:28] <pfred1> maybe that is why my system never broke when I updated it I always used aptitude update;aptitude safe-upgrade
[00:54:50] <kb8wmc> it does the update, and nothing to upgrade
[01:00:56] <cradek> http://buildbot.linuxcnc.org/dists/lucid/v2.5_branch-rt/binary-i386/?C=M;O=D
[01:01:12] <cradek> you should get
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[01:01:38] <cradek> I bet you've got emc2 installed, not linuxcnc
[01:01:54] <kb8wmc> ah, yes sir, I do
[01:02:04] <cradek> aha
[01:02:26] <cradek> just apt-get install linuxcnc
[01:02:51] <cradek> or switch to the releases if that toots your horn
[01:03:04] <kb8wmc> rgr, will do....tnx for the help
[01:03:08] <cradek> welcome
[01:04:35] <kb8wmc> doing the install now....
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[01:10:39] <kb8wmc> cradek: installed ok, all is well so far
[01:13:47] <kb8wmc> now I will move some files around
[01:14:45] <kb8wmc> cradek: oh, what will be the new resource url?
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[01:15:15] <cradek> I don't understand what you mean by resource url
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[01:15:51] <kb8wmc> the software source location for updates
[01:16:23] <cradek> for buildbot packages it's the same as what you have now. for releases it's different
[01:16:26] <cradek> which are you wanting?
[01:16:50] <cradek> releases are deb http://linuxcnc.org lucid linuxcnc2.5
[01:17:28] <kb8wmc> I best leave it as is....
[01:17:35] <kb8wmc> thanks again
[01:17:40] <cradek> welcome
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[01:41:02] <skunkworks__> logger[psha]:
[01:51:32] <asdfasd> the closed loop is back :)
[01:54:07] <skunkworks__> ;)
[01:59:51] <skunkworks__> I do have a couple of stepper machines....
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[02:01:21] <skunkworks__> seb!
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[02:01:43] <Tecan> how do i speed up my gcode ?
[02:01:55] <asdfasd> I hate myself that I used steppers for the last project
[02:01:57] <Tecan> my table is slow as air drying
[02:03:28] <djdelorie> Tecan: for my table, I reduced the steps/rot but that's not something you can do with a stepper ;-)
[02:03:48] <Tecan> no its something in gcode im going to try g97
[02:03:55] <djdelorie> make sure the "max speed" is correct in your ini file for each axis
[02:04:21] <djdelorie> make sure there isn't some confusion between IPM and IPS ?
[02:05:13] <Tecan> whats the fastest feed speed i can set ?
[02:05:25] <Tecan> i have g01 f200
[02:06:37] <djdelorie> the fastest you can set depends on your machine's limits, linuxcnc won't exceed those limits regardless of the gcode
[02:07:21] <skunkworks__> depending on what the moves are - your acceleration has a lot to do with it also..
[02:09:04] <Tecan> its not my limits its the code
[02:09:24] <asdfasd> change F
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[02:10:42] <skunkworks__> have you tried http://linuxcnc.org/docs/2.5/html/gcode/gcode.html#sec:G61-G61.1-G64
[02:10:53] <djdelorie> does the runtime in File->Properties change if you load the gcode up in the simulator?
[02:11:07] <skunkworks__> g64px.xxxqx.xxxx
[02:12:14] <asdfasd> g64 do not affect straight lines, is it moving fast on straigt lines?
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[02:17:15] <OhSnapp> not moving fast in straight lines
[02:17:37] <OhSnapp> its probably because im setting my S50 value for spindle speed
[02:17:39] <asdfasd> then g64 will not change
[02:17:47] <joe9> is it a bad idea to connect the -VDC (48Volts) to the taig frame?
[02:18:02] <OhSnapp> is it suposed to be S or F for spindle speed setting ?
[02:18:11] <asdfasd> s
[02:18:37] <asdfasd> it is a bit tifferent if you are using g95
[02:18:49] <OhSnapp> i have g96 on
[02:19:01] <asdfasd> but in normal conditions S is RPM and F is units per min
[02:19:05] <OhSnapp> and 97
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[02:19:29] <OhSnapp> hmm brb i try some more things
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[02:20:31] <asdfasd> ops
[02:20:37] <asdfasd> I mean G96
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[02:20:43] <asdfasd> I just checked
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[02:21:32] <asdfasd> you set constant surface speed and constant spindle, that mean it will stick to the spindle RPMs
[02:21:33] <OhSnapp> if i move my feed rate override it gets a little better
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[02:22:01] <asdfasd> you can try G94
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[02:22:10] <asdfasd> feen per minute
[02:22:13] <asdfasd> feed
[02:22:18] <joe9> alex4nder: is it a bad idea to connect the -VDC (48Volts) to the taig frame?
[02:22:28] <asdfasd> then F200 will give you 200 IPM
[02:22:55] <alex4nder> joe9: you mean as a common ground?
[02:22:58] <asdfasd> this is too fast actually
[02:23:08] <asdfasd> be carefull
[02:24:05] <asdfasd> joe9: ground loops are tricky
[02:24:10] <joe9> alex4nder: yes, but not the GND pin of the ac connection.
[02:24:26] <alex4nder> joe9: I don't ever depend on shared grounds for signals
[02:24:37] <joe9> this is the -ve pin of the PSU.
[02:24:41] <alex4nder> I think it's because I've done a lot of race car wiring, and that stuff will drive you insane if it goes wrong.
[02:25:04] <alex4nder> what's your goal?
[02:25:24] <joe9> i am trying to come up with a crude home switch
[02:25:34] <alex4nder> oh, like a wire running into the chassis?
[02:25:38] <alex4nder> "chassis"
[02:25:40] <joe9> yes.
[02:26:00] <alex4nder> where are you going to contact that isn't painted/annodized?
[02:26:08] <alex4nder> -n
[02:26:27] <joe9> oh, the anodized stuff does not conduct electriccity?
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[02:26:39] <alex4nder> it will, but it's an oxide layer
[02:27:19] <alex4nder> so you're going to have trouble keeping it conductive
[02:27:49] <joe9> i was thinking of having the chasis to the -ve pin of the psu. and having a small copper plate mounted on a double sided scotch tape that is the +ve pin (with a resistor and all that).
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[02:28:24] <joe9> so, that when the small copper sheet touches the chasis, it is home.
[02:28:25] <alex4nder> it's going to depend on where the ground is attached
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[02:28:44] <OhSnapp> lol
[02:28:57] <OhSnapp> f is the spindle speed and s is feed
[02:29:09] <alex4nder> joe9: I think you'll find that approach to be flakey
[02:29:37] <alex4nder> and going to be heavily dependent on where you expect current to flow, and where you're forced to remove paint
[02:29:37] <asdfasd> G95 G96 G97 make a lots of changes
[02:29:49] <joe9> oh, so I am better off with a tactile switch like this: http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&itemSeq=113121133&uq=634695990904919904
[02:30:17] <asdfasd> better try in G94 mode first, so you can setup all correctly
[02:30:38] <alex4nder> joe9: that didn't load for me, but yah.. a real switch makes sense.
[02:30:38] <joe9> stick it with double sided tape to the axis plate which comes in contact with the chasis at the end of travel.
[02:30:51] <alex4nder> I'd hard mount it
[02:31:15] <alex4nder> unless it's PSA with specified compression characteristics, it's going to be flakey
[02:32:02] <djdelorie> or four switches, in corners of a plate that the bit can hit, wired so that two switches in opposite corners have to close to "activate" ?
[02:32:10] * djdelorie is overthinking again
[02:32:23] <joe9> http://search.digikey.com/us/en/products/TL3310AF200QG/EG4589CT-ND/1794143 alex4nder try this link.
[02:33:04] <alex4nder> joe9: do you think that switch will survive a mill environment?
[02:34:10] <joe9> alex4nder: it will be on the underside of the axis, protected by the waycovers for the x and y axis
[02:34:10] <djdelorie> the four-switch option lets you use a rubber gasket around the perimiter to seal it
[02:34:38] <alex4nder> joe9: well if you trust it
[02:35:03] <joe9> alex4nder: it is just 87cents. should not be a big deal to replace it, if it does not.
[02:35:28] <alex4nder> right, if your time is free, and the annoyance of a failed switch costs nothing.
[02:35:43] <Tom_itx> might be a big deal to replace what it breaks when it fails
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[02:36:18] <alex4nder> joe9: what's the goal of the switch?
[02:36:30] <joe9> Tom_itx: probably not, it is a home'ing switch.
[02:36:37] <asdfasd> joe9: better take something more durable, and better dust resistant
[02:36:47] <joe9> alex4nder: to identify the end of travel for that axis.
[02:37:02] <alex4nder> so an emergency limit?
[02:37:09] <joe9> and I plan on using limits in the .ini file that correspond to the actual travel per the taig spec.
[02:37:12] <Tom_itx> it looks like a smt rubber bumper switch
[02:37:16] <joe9> alex4nder: no, a home switch.
[02:37:34] <alex4nder> that happens to be where a limit switch is. :D
[02:37:43] <joe9> yes.
[02:37:53] <joe9> only on one side.
[02:37:55] <djdelorie> you probably don't want a home switch that the carriage could damage if it smashes into it. Better to be one that the carriage can go past
[02:38:28] <alex4nder> if you fixture a lot, I could see the reason to make home switches a priority.. but I've never had a need for home switches.
[02:38:45] <alex4nder> I spend all my time with touchoff.
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[02:39:33] <djdelorie> I used MS0850505F045S1A switches for mine
[02:40:44] <alex4nder> djdelorie: yah exactly
[02:40:57] <alex4nder> I think the roller and lugs are the ticket
[02:41:46] <djdelorie> the X has a bump-out that swipes past the switch so it won't hurt it; the other two have the switches next to the actual ends so the machine takes the impact
[02:41:52] <alex4nder> joe9: this will all work, the question is 'how long' and 'how well'..
[02:42:10] <alex4nder> I don't use my mill in a professional environment, and my steppers are 166 oz/in.. so ..
[02:42:32] <djdelorie> most reliable is probably a hall switch, uses magnetics, neither dust nor coolant will stop it from working
[02:42:34] <joe9> djdelorie: how did you attach them to the machine?
[02:42:44] <joe9> double-sided scotch mounting tape?
[02:42:51] <joe9> is what I am thinking of.
[02:42:53] <alex4nder> djdelorie: yah, and the sensors are relatively cheap
[02:43:21] <djdelorie> #2 screws through the sides http://www.delorie.com/photos/cnc/img_2571.html
[02:43:44] <joe9> i do not want to drill my machine to attach the screws.
[02:43:44] <djdelorie> http://www.delorie.com/photos/cnc/img_2561.html shows the X with the bump-out
[02:44:35] <alex4nder> joe9: there are quite a few mounting locations that could be used
[02:45:03] <alex4nder> I was thinking of mounting a bracket under the way cover mount point
[02:45:10] <alex4nder> and then the switches would screw into that
[02:45:32] <djdelorie> if you rely on tape and it fails, your next home damages the machine
[02:45:43] <joe9> alex4nder: good idea.
[02:46:16] <joe9> djdelorie: i noticed that when I get the axis past the end, it just rotates and nothing happens. not sure if it is a good idea to let it happen many times.
[02:46:43] <alex4nder> do that at 60 IPM
[02:46:45] <alex4nder> it's fun
[02:47:09] <djdelorie> I managed to bend a 3/8-16 screw rod on my test jig when the motor didn't stop at the end
[02:47:23] <alex4nder> you're also using frankenservos
[02:47:39] <djdelorie> 100 oz-in continuous
[02:49:49] <alex4nder> joe9: the cool thing is, now that you have a mill you can make all the brackets yourself
[02:49:53] <alex4nder> the world is your oyster
[02:49:54] <OhSnapp> where do i set default speed mode
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[02:50:47] <OhSnapp> G97 is using it on me
[02:51:15] <joe9> alex4nder: ok, thanks.
[02:51:46] <alex4nder> joe9: do you have a giant e-stop switch yet?
[02:51:52] <alex4nder> one that you can reach out and smack?
[02:51:53] <djdelorie> alex4nder: the problem with restoring an antique machine, is that you *have* to make all the parts yourself
[02:52:11] <joe9> alex4nder: no, I am just using a light switch as an e-stop still.
[02:52:14] * djdelorie still needs to add a *power* switch
[02:52:21] <alex4nder> joe9: the light switch? you mean for the spindle?
[02:52:29] <alex4nder> or some other light switch
[02:52:32] <joe9> no, as the e-stop switch too.
[02:52:40] <alex4nder> ah
[02:52:49] <alex4nder> well if you ask me, a giant e-stop is way more important than limit switches
[02:52:51] <alex4nder> or home
[02:53:03] <joe9> ok, will get one from digikey.
[02:53:13] <alex4nder> djdelorie: one is probably a machining badass before the antique machine purchase.
[02:53:21] <alex4nder> djdelorie: plus, machines beget more machines. ;)
[02:53:23] <djdelorie> not in this case
[02:53:32] <djdelorie> it was my father-in-law's lathe before he passed away
[02:53:33] <alex4nder> well the best of luck then
[02:54:18] <joe9> e-stop switches are pretty expensive.
[02:54:52] <alex4nder> you just bought a $1200 mill
[02:55:00] <joe9> yeah, i know.
[02:55:24] <alex4nder> I personally like Omron's giant e-stop switches
[02:55:49] <djdelorie> perhaps I should use standard big-tool power switches, the type you can just smack to shut off
[02:56:09] <Valen> estop stuff should be bashable
[02:56:25] <Valen> because if you are stopping in the case of an E you will bash it ;->
[02:56:33] <djdelorie> most of my woodworking tools have a "hit without looking" off switch
[02:56:41] <Valen> we ran without limit switches for ages
[02:56:44] <alex4nder> djdelorie: that's what Omron's e-stop switches are.
[02:56:49] <Valen> actually we still are running without limits
[02:56:52] <alex4nder> smash to kill, rotate to reset.
[02:57:01] <djdelorie> except these are the main power switches, not the big e-stop switches
[02:57:11] <Valen> but now we have the index pulses on our slides connected as home switches
[02:57:16] <alex4nder> nice
[02:57:21] <Valen> so it doesn't hit the limits anyway
[02:57:45] <Valen> we had fuses in the motor lines so running into the end made a bad noise and blew a fuse
[02:57:51] <djdelorie> like this one: http://www.grizzly.com/products/Magnetic-On-Off-Switch-110V-6-Amps/G8992
[02:58:25] <Valen> i wouldn't use one of those unless it had one of those covers that means bashing it will only turn it off
[02:58:38] <Valen> http://www.grizzly.com/products/110V-Paddle-On-Off-Switch/H8241 like this kinda
[02:58:51] <alex4nder> yah, that you could throw a baseball at
[02:58:53] <Valen> but those are a pain, the twist ones are easy to use
[02:59:14] <Valen> problem with the two button one is you could still hit the wrong one
[02:59:26] <djdelorie> most of mine have a recessed ON and a protruding OFF. Except the delta, which just puts a collar around ON so you can't "just" smack it
[03:00:01] <djdelorie> like this, which I hate: http://www.grizzly.com/products/110-220V-On-Off-Switch/H8238
[03:00:24] <alex4nder> I'm going to replace my Omron with a Hello Kitty lightswitch
[03:00:35] <alex4nder> it's illuminated
[03:00:45] <djdelorie> and you enjoy smacking it ? ;-)
[03:01:13] <alex4nder> yes; I always thought Hello Kitty sucked
[03:08:24] <OhSnapp> cradek theres something wrong with g97, it wont allow itself to be set without adjusting the feed rate
[03:15:45] <OhSnapp> no wonder... feed rate is the feed per revolution... i should still be able to make it go faster wth
[03:37:57] <OhSnapp> its strange if i set g01 f6 or f7 it gets its fastest
[03:38:09] <OhSnapp> any higher or lower is bad
[03:42:24] <OhSnapp> awe sweet its getting faster
[03:43:52] <OhSnapp> tis working afterall sorry
[03:45:25] <OhSnapp> it seems to be capped though
[03:46:50] <OhSnapp> i have to many lines of gcode im thinking
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[04:05:56] <Jymmm> SWPadnos: Pack Size : 22" H x 17" W x 11" D
[04:15:11] <OhSnapp> uploading video
[04:15:16] OhSnapp is now known as Tecan
[04:18:49] <Tecan> http://youtu.be/18_fyBeGRSk
[04:18:57] <Tecan> look how slow its going
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[04:26:45] <ssi> http://www.ebay.com/itm/HARDINGE-TURRET-TOP-PLATE-3-8-WITH-TOOLING-/290695609249?pt=LH_DefaultDomain_0&hash=item43aecefba1#ht_500wt_1413
[04:26:52] <ssi> if that was about half that money, I might snatch it :P
[04:42:47] <Tecan> http://i.imgur.com/CBPI1.jpg
[04:42:52] <Tecan> lol sooo slooow
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[04:46:05] <ssi> lol
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[04:46:19] <ssi> the more I think about it, the more I want a little laser
[04:46:25] <ssi> how well does that 40w tube do marking steel?
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[04:48:27] <Tecan> hmmm one sec i think you need 60 for that
[04:48:57] <ssi> 60 may be doable
[04:49:01] <ssi> above that it gets real spendy real fast
[04:49:20] <Tecan> 40 had no effect
[04:49:28] <Tecan> i was just using the test button though
[04:49:48] <ssi> well I've also heard you need some special coatings to make engraving work well with light power lasers
[04:50:08] <ssi> In order to engrave on bare metal, you'll need a laser engraver with a minimum of 25 watts and utilize a metal marking spray such as Cermark.
[04:51:14] <ssi> http://www.cermarc.com/
[04:54:31] <Tecan> thanks
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[04:55:18] <Jymmm> cermark does NOT engrave/etch, it only marks most metal.
[04:55:23] <ssi> yeah
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[05:26:00] <Tecan> do you guys know off hand if its possable to send more commands while its waiting to finish a g01 ?
[05:26:09] <ssi> sure, but they queue up
[05:26:56] <Tecan> i thought emc is threaded though :)
[05:28:40] <djdelorie> but your machine is not
[05:29:03] <Tecan> i just want to send spindle speeds
[05:29:19] <Tecan> thats a diff pin
[05:29:45] <Tecan> maybe it does send them
[05:29:58] <Tecan> i just need to interpolate more
[05:31:22] <Tecan> it just seemed like it was waiting on the g01 commands to finish
[05:31:23] <ssi> spindle override is the only way I know of to vary spindle speed once you're already in a move
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[06:52:42] <Loetmichel> mornin'
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[06:53:13] <mk0> moin
[06:54:08] <DJ9DJ> moin
[07:02:49] <mk0> ))
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