#linuxcnc | Logs for 2013-07-01

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[00:04:04] -!- Tom_itx [Tom_itx!~Tl@unaffiliated/toml/x-013812] has joined #linuxcnc
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[00:04:46] <Aero-Tec2> thread depth
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[00:05:03] <Aero-Tec2> need it for threading
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[00:05:50] <Aero-Tec2> 0.25 x 20 G76 example uses 0.045 for thread depth
[00:06:50] <Aero-Tec2> have a calculated hight of 0.0307
[00:07:13] <Aero-Tec2> so why 45 thou in the threading example?
[00:07:41] <Tom_itx> are they measuring to different points on the thread profile?
[00:08:04] <andypugh> It's complicated
[00:08:12] <Aero-Tec2> lol
[00:08:19] <Aero-Tec2> any way to make it simple?
[00:08:20] <Tom_itx> you can use a wire for that i believe
[00:08:27] <andypugh> What shape is your tool?
[00:08:37] <Tom_itx> you can use the root diameter
[00:08:45] <andypugh> And how are you definign the tool point?
[00:08:45] <Aero-Tec2> 60 Deg point
[00:09:00] <Aero-Tec2> sharp point
[00:09:15] <andypugh> http://en.wikipedia.org/wiki/Unified_Thread_Standard
[00:09:20] <Aero-Tec2> the point being the tool zero
[00:09:48] <Tom_itx> it might need to be some percent less than the point
[00:10:25] <Tom_itx> i haven't tried singlepointing threads yet
[00:10:31] <andypugh> There is a significant difference between the perk-to-root distance of a thread, and the diameter that a sharp tool turns a diameter to and how deep it needs to go to make a proper thread.
[00:11:21] <andypugh> And it is different again for a formed tool with a root radius, as that turns a different diamater, but should cut less deep.
[00:12:12] <Aero-Tec2> I have thread triangles for measuring threads
[00:12:41] <Tom_itx> you really need a 'go' 'no-go' gage
[00:12:53] <Tom_itx> do do it 'right'
[00:12:57] <andypugh> If you lok at the diagram on that Wiki page: The nominal thread diameter is the very top point. The actual OD you need to machine to is the next diamter down, the nominal less p/8.
[00:13:00] <Tom_itx> to do*
[00:13:00] <Aero-Tec2> I do not use the wire method for measuring threads
[00:14:20] <andypugh> Then, a form tool needs to remove a further 3H/8 (plus a bit) bit a pointed tool needs to remove a 3H/8 + H/4
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[00:15:09] <Tom_itx> and then there are tolerance classes for threads as well
[00:15:15] <andypugh> I claim to undertand this stuff and still always seem to need three goes at a thread and end up taking off twice as much as I expect.
[00:15:25] <Tom_itx> you can get several sizes of 1/4-20 for example
[00:15:51] <Tom_itx> tap sizes that is
[00:15:55] <Aero-Tec2> what about this formula
[00:15:58] <Tom_itx> just as an example
[00:16:04] <Aero-Tec2> 0.61343 x ( 1 / # of threads per inch)
[00:16:32] <Aero-Tec2> it seams very popular
[00:16:43] <Tom_itx> are you cutting metric or imperial?
[00:16:50] <Tom_itx> i assume they are a bit different
[00:17:08] <andypugh> I think that only works for a (correctly) rounded tool, a pointy tool needs to cut deeper to make the threads thin enough.
[00:17:27] <Aero-Tec2> but gives a thread depth of 0.0307 for 1/4 x 20 thread
[00:17:37] <andypugh> Actually, ISO and Unified are exactly the same form, just different pitch and diameter.
[00:20:34] <Aero-Tec2> so for a sharp point is 45 thou the right thread depth to use for a 1/4 x 20 thread?
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[00:23:06] <andypugh> No idea :-)
[00:23:46] <Tom_itx> .0379
[00:24:04] <Tom_itx> acording to this calculator
[00:24:44] <Aero-Tec2> what calculator?
[00:25:02] <Tom_itx> www.sherline.com/thread%20calculator.xls
[00:25:24] <Tom_itx> HANDY CALCULATOR FOR DIMENSIONS NEEDED TO SINGLE POINT STANDARD 60░ THREADS. 4, INCH 60░THREADS, METRIC 60░ THREADS
[00:25:26] <Aero-Tec2> 0.0383
[00:25:27] <Aero-Tec2> if you add 20% for the 80% thread
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[00:26:19] <Tom_itx> http://www.bradleyteets.com/Threading.htm
[00:26:43] <andypugh> I suggest working it out from scratch from the Wiki page.
[00:27:29] <andypugh> Because the Sherline calculator does not know just _how_ pointy your tool is, nor quite how you are defining the tool point position.
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[00:29:05] <Tom_itx> you would know for sure if you did the calcs
[00:29:24] <Tom_itx> but the spreadsheet might get you in the ballpark
[00:30:41] <Tom_itx> also check the machinery handbook
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[00:34:08] <Tom_itx> http://www.practicalmachinist.com/vb/general/newbie-pre-threading-calculation-questions-243014/
[00:34:17] <Tom_itx> fwiw
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[01:21:46] <Aero-Tec2> just did a drawing of a thread in solid works
[01:22:12] <Aero-Tec2> thread depth for 20 TPI is 0.0492
[01:22:55] <Aero-Tec2> if you use a sharp point threading tool
[01:25:50] <Aero-Tec2> I hate then things do not agree
[01:27:40] <Aero-Tec2> solid works drawing says 0.0492 for thread height, the wiki formula says 0.0433
[01:28:04] <Aero-Tec2> just about 6 thou diff
[01:28:14] <Aero-Tec2> to much for my liking
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[01:28:31] <roycroft> same tolerence for both?
[01:28:57] <Aero-Tec2> and the G76 threading sample had a thread depth of 45 thou
[01:29:11] <Aero-Tec2> AFAIK
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[01:37:32] <RyanS> previous msg didn't send..... is '4E' the grade of grey cast iron i need for machining ?
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[01:55:43] <ssi> wb
[01:56:13] <PetefromTn> huh?
[01:56:19] <ssi> welcome back
[01:56:38] <PetefromTn> aah...
[01:56:48] <PetefromTn> thank you.
[01:57:14] <PetefromTn> just got back from Fishkin..
[01:57:30] <PetefromTn> eatin' some Italian Ices...
[01:57:47] <ssi> Aero-Tec2: does your solidworks drawing have the right outside diameter? It'll be smaller than the nominal size, and that's what produces the crest flats
[01:59:39] <Aero-Tec2> I just drew a 2D drawing of 20 TPI, then measured
[02:00:03] <ssi> does it have the right flats?
[02:00:24] <Aero-Tec2> no flats
[02:00:48] <Aero-Tec2> do you need flats?
[02:00:58] <ssi> absolutely
[02:01:16] <ssi> you should have a crest flat either way
[02:01:25] <Aero-Tec2> why?
[02:01:26] <ssi> a proper thread has a root flat, but if you use a sharp V tool, you won't have one
[02:01:42] <Aero-Tec2> taps do not have flats
[02:01:56] <Tom_itx> there is no standard adopted for the flat
[02:02:10] <Tom_itx> says machinery's handbook
[02:02:16] <Aero-Tec2> I can see why they are used
[02:02:42] <ssi> if you're trying to compare your drawing against a UN thread calculator, you WILL get different answers
[02:02:52] <Tom_itx> usually about 1/25th the pitch
[02:03:09] <Tom_itx> also says the same book
[02:03:14] <ssi> I'm pretty sure that UN does specify a standard for flats
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[02:04:16] <Aero-Tec2> 20 tpi should be 1/20
[02:04:24] <Aero-Tec2> 0.05
[02:04:56] <Tom_itx> D=.866/tpi
[02:05:13] <Tom_itx> D is point to point
[02:05:16] <Tom_itx> root to crest
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[02:05:22] <Aero-Tec2> =DEGREES(COS(30))*(1/E63)
[02:05:45] <Aero-Tec2> oops
[02:06:05] <Aero-Tec2> Height = cos(30deg) * P
[02:06:23] <sharpen047> hey guys im looking to convert my 3 axis cnc into a laser cutter/engraver with a co2 laser. im trying to figure out what i would need. i know id need the tube the power supply and maybe a focusing lens? but is there a special controller to tell it when to turn on and off?
[02:06:30] <Aero-Tec2> witch is what tom said
[02:06:30] <Tom_itx> D = P * COS 30 deg
[02:06:56] <Tom_itx> or P * .866
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[02:08:32] <Aero-Tec2> so why the big difference from drawing to calculated value?
[02:08:40] <Aero-Tec2> 20 tpi
[02:09:07] <Aero-Tec2> 0.0433
[02:09:07] <Aero-Tec2> thread height calculated
[02:09:54] <Aero-Tec2> 0.0492 in solid works
[02:10:05] <Aero-Tec2> ooops
[02:10:23] <Aero-Tec2> got to check something
[02:11:47] <Aero-Tec2> life is good
[02:12:01] <Tom_itx> i suppose i could draw it and measure the result
[02:12:26] <Aero-Tec2> thought I had, and had meant to add the deg in drawing
[02:12:34] <Aero-Tec2> it all works out good now
[02:12:58] <Aero-Tec2> both come out to 0.0433
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[02:31:08] <sharpen047> does anyone know what controls a cnc laser to turn on and off rapidly?
[02:35:51] <CaptHindsight> probably a mosfet for a LED laser
[02:37:42] <sharpen047> what sends the signal? the par port pin? to a transistor then to diode?
[02:37:54] <sharpen047> i cant find any schematics or ones to buy
[02:39:19] <CaptHindsight> what type of laser?
[02:39:56] <sharpen047> havent decided but looks like co2 works well for engraving and cutting plexiglass and engraving aluminum and wood
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[02:44:01] <CaptHindsight> http://www.lightobject.com/40W-PWM-CO2-Laser-Power-Supply-P71.aspx
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[02:45:22] <sharpen047> but what tells it when to power the laser?
[02:45:45] <t12> ttl
[02:45:59] <sharpen047> printer port voltage?
[02:46:02] <CaptHindsight> what do you want to control it with?
[02:46:47] <sharpen047> i have a cnc mill now controlled by emc and a g540
[02:47:05] <CaptHindsight> what do you have for spare IO?
[02:47:27] <sharpen047> i only have 4 motors connected. no limit switches or spindle control.
[02:47:44] <CaptHindsight> any extra pins on your EPP?
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[02:48:15] <sharpen047> yes, i also have a second parport available. just not sure how hard it would be for the laser
[02:49:17] <sharpen047> does it just have a signal wire coming from a pin on the DB25 to the psu?
[02:52:26] <CaptHindsight> depends on the laser power supply
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[02:55:07] <sharpen047> ah ok thanks though
[02:55:27] <CaptHindsight> http://retired.beyondlogic.org/spp/parallel.pdf
[02:56:44] <CaptHindsight> if your power supply has 5V TTL inputs you're set, if not you'll have to see about level shifting
[02:57:11] <sharpen047> cool, so just a wire connecting the pin with the output to the wire in on the psu?
[02:57:14] <sharpen047> its that easy?
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[02:57:23] <CaptHindsight> maybe
[02:57:29] <sharpen047> depending anyway
[02:57:58] <sharpen047> hah alright well ill look more tomorrow. thanks for the help. could be the reason i cant find much info on it though. its really easy if you have the right psu
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[06:49:26] <DJ9DJ> moin
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[09:34:16] <Loetmichel> mornin'
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[09:57:40] <RyanS> hmm drill bit doctors seem suspiciously like daytime television products
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[10:12:05] <jthornton> lol
[10:33:38] <Valen> dad has one
[10:33:42] <Valen> seems to do the job
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[10:49:20] <jthornton> the ones I have tried have too coarse of a wheel and the finish on the bit is rather rough
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[11:50:56] <skunkworks> in case some missed this - https://www.youtube.com/watch?v=2STkBhUiKwg
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[11:53:10] <jthornton> cool
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[11:54:34] <skunkworks> morning john
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[11:55:06] <jthornton> morning
[11:55:18] <jthornton> hows it going in your neck of the woods
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[12:15:17] <skunkworks> jthornton, not bad. We finally had some sunny days. Been raining a lot here.
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[13:23:24] <Heinz_60> whats up with linuxcnc.org?
[13:23:35] <Heinz_60> downtime?
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[13:33:06] <archivist> werksforme
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[14:03:07] <cradek> also wfm here
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[14:11:35] <skunkworks_> cradek, here you go - https://www.youtube.com/watch?v=2STkBhUiKwg
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[14:14:48] <cradek> eek, jogging downward with the wireless joystick was scary
[14:15:34] <ssi> skunkworks_: is that someone in our group?
[14:16:16] <ssi> I need to get my delta machine going
[14:16:21] <cradek> I definitely want to build something like this - I have started trying to figure out what to use for knuckles
[14:16:22] <ssi> mine's not nearly that robust though :)
[14:23:05] <skunkworks_> ssi, I don't know - he did a nice hexapod too
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[14:25:05] <ssi> if we get BBB linuxcnc going, I may use it to run my delta
[14:26:06] <ssi> http://sphotos-a.xx.fbcdn.net/hphotos-frc1/577596_10100133843429202_1708616203_n.jpg
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[14:29:44] <skunkworks_> neat
[14:29:55] <skunkworks_> Parallel robots 1 day ago
[14:29:55] <skunkworks_> Thank you Andy! Though ja3 certainly has some trajectory planning´╗┐ issues. G61 works faster than G64 for some reason. Probably joints and axes still mixed together somewhere. I will change joints acceleration and see if that's true.
[14:30:31] <cradek> I noticed some world mode acceleration problem years ago when I was working on the puma
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[14:30:56] <cradek> I really should try it again. people keep saying it works right, but I haven't seen that myself yet
[14:31:22] <skunkworks_> well - seb has a robot arm now.. ;)
[14:31:32] <cradek> road trip to seb's!
[14:32:53] <ssi> does linucnc have any notion of keepout areas?
[14:33:22] <ssi> a machine I work on has permanent fixtures, and I'm trying to come up with some relatively idiot-proof modular code for them
[14:33:51] <ssi> google suggests such a thing doesn't exist :P>
[14:34:14] <cradek> no it doesn't
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[14:35:38] * JT-Shop calculates the time to fill the rotary table with oil based on the rate of adding the oil and the unknown volume to be somewhere between a week and a year
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[14:56:30] <Jymmm> JT-Shop: Ah yes, volume has always been measured in time units.
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[15:07:56] <PetefromTn> MMMmmmmoooorrnin! folks.. LOL
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[15:14:11] <IchGuckLive> hi all B)
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[15:26:31] <JT-Shop> howdy
[15:26:44] <IchGuckLive> B9
[15:26:56] <IchGuckLive> sattel the horses BBq in texas !
[15:27:46] <IchGuckLive> hedding home for resttime by till later
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[15:43:13] <ej> hello
[15:44:28] <ej> anyone else getting "unexpected character after o-word" when using macros?
[15:44:57] <JT-Shop> no
[15:45:11] <JT-Shop> must be a typo
[15:45:24] <micges> ej: pastebin.com your gcode
[15:45:24] <archivist> define macro
[15:45:26] <JT-Shop> or copied from a windoze computer
[15:45:44] <JT-Shop> hi micges and archivist
[15:46:07] <micges> hi JT-Shop
[15:46:13] <ej> http://pastebin.com/z8k5vkba
[15:47:03] <ej> I made some macros in 2.4 and thought to write more of them in 2.5 (I really like being able to run them in MDI from files). Unfortunately I get the mentioned error way too often and can't figure out why.
[15:47:20] <micges> in what line do you have error?
[15:47:42] <ej> "near line 21"
[15:48:35] <ej> I had a working rectangular pocet macro that worked earlier. Now I get the same error.
[15:53:12] <micges> ej: I have no errors on 2.5.2
[15:53:39] <micges> seems JT-Shop is right - leave windows
[15:54:13] <cradek> there's nothing wrong with this code so I expect it is not the same as the code you are running when you see the error?
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[15:54:33] <cradek> and I don't understand what you mean by "way too often"
[15:54:57] <ej> I meant that all my macros stopped working when updated 2.4->2.5
[15:55:07] <ej> I now have 2.5.0, let me try the 2.5.2
[15:55:36] <cradek> that's not going to change it
[15:56:48] <ej> I copy-pasted the code again: http://pastebin.com/3W5uh8Rk
[15:57:03] <ej> tried a few times to check it was the same I tried to load
[15:57:32] <ej> I can't figure out what I'm doing wrong.
[16:00:23] <cradek> hmm I get it too
[16:01:30] <cradek> 0000a0 6f 39 39 20 63 61 6c 6c o 9 9 c a l l
[16:01:30] <cradek> 0000a8 20 5b 35 30 5d c2 a0 5b [ 5 0 ] c2 a0 [
[16:01:54] <cradek> I don't know what you edited this file with, but the character between [50] and [100] is not a space
[16:02:37] <archivist> utf8?
[16:02:47] <cradek> I'm guessing you used a word processor to edit it, when you should have used a text editor
[16:03:31] <archivist> editors are becoming utf8 not just word processors
[16:04:51] <archivist> c2 a0, NO-BREAK SPACE in utf8
[16:05:20] <cradek> ej: more information about the history of this file, please
[16:06:15] <cradek> I am sure 2.4 would not have accepted this file either, so you have changed it since then
[16:09:50] <ej> I used gedit
[16:10:05] <ej> never thought to check the file in hex editor
[16:10:16] <ej> this one is brand new
[16:10:21] <cradek> the file had dos line endings, so I'm inclined to suspect you did other things too?
[16:10:42] <cradek> I suppose maybe pastebin mangled it, but in a way that gives me the same error you have seems unlikely
[16:11:15] <ej> the file had some extra code in the subroutine, but otherwise I didn't edit it
[16:11:18] <cradek> to be fair I don't use gedit so maybe it IS braindamaged
[16:11:39] <ej> any suggestions for a editor to edit subroutines then?
[16:12:01] <skunkworks_> I use gedit...
[16:12:04] <archivist> I do use gedit but am still on older ubuntu
[16:12:18] <micges> ej: geany
[16:12:19] <cradek> 000000 6f 39 39 20 63 61 6c 6c o 9 9 c a l l
[16:12:19] <cradek> 000008 20 5b 31 5d 20 5b 32 5d [ 1 ] [ 2 ]
[16:12:26] <cradek> I just created a new file with gedit and it's fine
[16:12:28] <archivist> but, it is 2013 and utf8 is rather comon
[16:12:40] <CaptHindsight> http://chicago.craigslist.org/nwc/tls/3897132604.html does this have a J head?
[16:12:51] <cradek> also it does not have dos line endings. are you 100% SURE you didn't edit (or even open it) in anything else?
[16:14:15] <cradek> I agree with JT-Shop that it smells like windows is involved somehow
[16:14:36] <ej> Right now I'm editing the code in virtualbox, my main OS is Win7. The copy-paste went through the VM's shared clipboard.
[16:14:43] <ej> Whether this messed it up, I can't tell.
[16:14:58] <cradek> neither can we
[16:15:16] <cradek> well at least now you are aware of the problem
[16:15:36] <ej> however, last time I wrote code was at my laptop (running xubuntu 12) and more editing at my 10.04 linuxcnc-machine. Then I got the errors as well.
[16:15:45] <cradek> you will have to figure out how to avoid it (and not using windows will help)
[16:15:46] <ej> Yes. Thank You all for help!
[16:15:56] <cradek> welcome
[16:16:02] <JT-Shop> ej: use notepad++ in windoze
[16:16:11] <ej> or programmer's notpad.
[16:16:23] <cradek> if you can find a way to cause the error WITHOUT using windows or virtual machines etc, let us know because we might have to notify people
[16:16:41] <ej> I'll keep that in mind
[16:17:09] <ej> I really like this community. I've gotten help many times very fast from this IRC-channel. Much appreciated.
[16:19:13] <cradek> yay :-)
[16:23:10] <ej> One possible source of the bug might be the finnish keyboard. If I run the subroutine from file in MDI mode putting spaced between variables, I get the error. Without spaces everything works fine.
[16:23:40] <cradek> ohhhh interesting
[16:23:48] <cradek> maybe you ARE directly typing those characters
[16:25:09] <cradek> % echo "a b" |hd
[16:25:09] <cradek> 000000 61 20 62 0a a b lf
[16:25:13] <cradek> do this at a shell
[16:25:48] <ej> 00000000 61 20 62 0a |a b.| 00000004
[16:26:02] <skunkworks_> maybe you are hiding goverment secrets in your spaces!
[16:26:08] <ej> however, now I'm unable to repeat the bug
[16:26:31] <cradek> yeah that space is a space now
[16:27:27] <ej> I remember that after re-installing my production machine, my hole subroutine gave me the error until I entered the variables one by one. So that first I called it with one variable, then with two, ... After I did that, it was able to be called without errors.
[16:27:32] <ej> Beats me.
[16:29:06] <archivist> I think linuxcnc will have to embrace utf8 soon as it becomes the norm
[16:29:48] <JT-Shop> http://www.spyderlovers.com/forums/showthread.php?54801-Spyder-RT-on-Tail-of-the-Dragon-Video
[16:29:53] <archivist> at least add the problem(feature) to the docs
[16:30:32] <ej> Ok. There's something in my keyboard input. If I write the o<code> call from MDI, it gives me the error. If I write it without spaced, it works.
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[16:30:39] <cradek> surely " " (0x20) is a valid utf8 character
[16:30:46] <JT-Shop> http://www.linuxcnc.org/docs/html/gcode/overview.html#_file_requirements
[16:30:51] <cradek> NBSP is a different one that happens to not be valid in gcode
[16:31:11] <cradek> I'm not sure what you mean by either "embrace" or "problem"
[16:31:12] <JT-Shop> should that Note say something about utf8?
[16:32:05] <archivist> nbsb is a valid space in utf8
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[16:32:41] <archivist> and new users will be confused that utf8 is not valid
[16:33:05] <terrym> Hi all
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[16:33:46] <ej> Ok, I know now that was the problem... my assumption.
[16:33:47] <cradek> there are many kinds of whitespace: http://bogofilter.org/pipermail/bogofilter/2003-March/001889.html
[16:34:00] <terrym> What is an easy way to generate gcode to do engraving of text along a curved path?
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[16:34:25] <cradek> terrym: "easy" is a matter of opinion but you could modify truetype-tracer to do that
[16:34:26] <ej> Being lazy, I've been writin the "] [" holding alt-gr all the time. This puts a blank character, although It's not space.
[16:34:37] <JT-Shop> you mean text on a cylinder
[16:35:09] <cradek> ej: oh so you're actually typing it, but did not notice because it looks the same
[16:35:17] <cradek> ej: thanks for reporting back what you figured out
[16:35:30] <terrym> text in the XY plane, along a curve.
[16:35:50] <ej> Thank you for pointing to the right direction!
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[16:36:41] <JT-Shop> you might check the g code generators on the wiki I think one might work, but I"m not sure
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[16:38:28] <archivist> could cheat and rotate the item under the spindle between letters
[16:38:33] <JT-Shop> you could also rotate the coordniate system between letters
[16:38:47] <cradek> or keep the work fixed and rotate the mill
[16:38:51] <archivist> choices
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[16:41:52] <tjtr33> JT-Shop, great video, like the way we can see your rev trike vs the guy in front of you ( handles SAME way)
[16:41:53] <JT-Shop> archivist: repairs completed http://imagebin.org/263106
[16:41:53] <tjtr33> and the music is great ~Mannheim SteamRoller+Symphony ( they just broke into the 'mission impossible riff )
[16:42:20] <archivist> JT-Shop, proper job !
[16:42:52] <JT-Shop> tjtr33: that's not my video, one of the other riders at the Owners Event at Maggie Valley
[16:42:56] <JT-Shop> archivist: thanks
[16:43:16] <JT-Shop> and I didn't even cut it in two with a torch and weld it back
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[16:58:33] <IchGuckLive> hi all B)
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[17:21:34] <Tom_itx> JT-Shop, is the gear keyed?
[17:30:33] <PetefromTn> Well my Router adapter is looking pretty good here.
[17:30:43] <ssi> awesome
[17:30:49] <Connor> PetefromTn: You get it opened up a bit more ?
[17:31:04] <PetefromTn> I just removed it from the vise this morning and deburred everything and it is a SNUG fit on the router AND the spindle
[17:31:13] <PetefromTn> No actually I decided against it.
[17:31:21] <Connor> slot cut ?
[17:31:36] <jdh> snug is good.
[17:31:44] <PetefromTn> I like it to be tight and even if I have to kinda pry the opening up a smooch to get the router in there I am good with it.
[17:32:04] <jdh> good for router mounts too
[17:32:07] <PetefromTn> No not yet but I have been playing with the labrynth seal plate and it goes into the recess I machined
[17:32:13] <ssi> you could put a setscrew in one side that'll let you push the slot open and hold it open a tad
[17:33:27] <PetefromTn> Basically it looks like plate will get installed over four studs that replace four of the six securing bolts for the labrynth seal and then I can snug it up there. It will probably need a tap with a rubber mallet or two to get on there fulluy but the repreatability will be excellent.
[17:33:49] <PetefromTn> ssi: Not a bad idea but I am not sure there will be room once I get the pinch bolt in there.
[17:34:22] <ssi> if you're clever, you could actually use the pinch bolt as a hold-open as well
[17:34:36] <Aero-Tec2> only 56 tools max in the tool table, so can one use ; or something else to rem out tool lines?
[17:34:46] <PetefromTn> I really wanted to be able to align this spindle with the factory spindle along the X axis so that my offsets are simple and repeatable.
[17:35:07] <Aero-Tec2> would like to have more then 56 tools and rem out the ones not needed if possible
[17:35:13] <PetefromTn> ssi: Yeah I have considered that, perhaps a nut in a recess in the middle somehow.
[17:35:52] <PetefromTn> So far this thing is BIG and CHUNKY.... Should be strong and rigid for the router. Glad I went with the 1" plate.
[17:35:58] <ssi> groove the bolt where it emerges from the head side in the slot, and put an e clip on it
[17:36:02] <ssi> so the bolt can rotate but not back out
[17:36:12] <ssi> then you can tighten it to pinch, or loosen it to expand
[17:37:19] <PetefromTn> I thought of milling a slot in between where the pinch happens and putting a slim nut in there and using it to push against the non threaded side.
[17:38:15] <PetefromTn> Honestly I will probably just stick a large screwdriver in there and pry LOL... The router body and the hole are the exact same dimensions so I just need a skootch...
[17:38:20] <ssi> yea
[17:38:28] <PetefromTn> Skootch being a technical term...
[17:40:17] <PetefromTn> I am still continually amazed at the precison of this machine. Basically all of the dimensions are EXACTLY what the drawing was to the best of my measuring ability. Lomach told me how precise his is and I can see what he means now. I am so used to allowing for stuff and creaping up on dimensions this is kinda different LOL
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[17:40:47] <ssi> yeah my hnc is that way
[17:41:12] <PetefromTn> Connor: You get them damn pullies installed yet? I am anxious to hear if it runs smooth or not after our work.
[17:41:33] <PetefromTn> ssi: I'm sure it is.. Hardinge did not play games with quality.
[17:42:10] <ssi> PetefromTn: and the original control had a mode that gave it 0.000020" resolution
[17:42:13] <PetefromTn> Coming from mostly chinese machinery and having owned many different mills and lathes over the years this is pretty nice so far
[17:42:31] <PetefromTn> ssi: You gonna be able to get that with the NEW control no?
[17:42:49] <ssi> well I have linuxcnc configured so it only displays 0.0001"
[17:42:55] <ssi> but I'm sure it could be done
[17:43:09] <ssi> the accuracy is in the ways and the screws and the resolvers
[17:43:10] <Connor> No. I did manage to get the damn top guide back in place.. looks like crap.. it's all banged up.. :( Maybe I can clean it up with some sand paper after I get it mounted. But, I can't do crap with the pulley till we do the set screws.. and to dot those, I need to make my adapter plate for my rotary table.
[17:44:00] <PetefromTn> Connor...oh that sucks, what is tthe top guide? Did we make that?
[17:44:09] <ssi> I need to sit down and calculate what the effective resolution of the resolvers is
[17:44:14] <Connor> That stupid thingie we took off..
[17:44:25] <Connor> that's pressed on.
[17:44:30] <PetefromTn> not sure what stupid thingie
[17:44:33] <ssi> I'm not sure offhand how many resolver rotations per linear inch there are, but it's a lot
[17:44:36] <ssi> like 20 or something
[17:45:08] <PetefromTn> ssi: I am sure you can probably turn parts into the tenths pretty easily with that machine.\
[17:45:09] <ssi> and the mesa resolver converter is 14 bit I believe... so with some math I could figure out what the smallest angle of change in the resolver can be measured with that 14 bit ad
[17:45:20] <ssi> oh yea I can hold a tenth all day long on it
[17:45:21] <Connor> we had to take them off using the brass punch..
[17:46:27] <PetefromTn> I was looking at the bores I machined.. Had to use a 3/8 endmill that only had a 7/8 LOC on it and the part is 1" deep so two passes a little more than half inch. It looks like it was bored with a boring bar almost. Unbelievable.
[17:46:35] <ssi> awesome
[17:46:39] <ssi> I really need a machine like that :/
[17:46:45] <PetefromTn> Oh you mean the pulley guides..
[17:46:56] <PetefromTn> flanges.
[17:48:22] <andypugh> http://cgi.ebay.com/ebaymotors/Sea-Harrier-FA2-Jump-Jet-/281126520805
[17:48:24] <PetefromTn> Yeah I thought there would be a specific line where one pass went over the other but I cannot find it... the second pass was essentially rubbing the endmills shank on the already cut part and it still looks good.
[17:48:25] <Connor> flanges.. yea.. couldn't think of the damn word.
[17:48:43] <andypugh> There is a "FREE Quote from Geico" link, but it doesn't seem to work.
[17:49:03] <ssi> I wonder what it lacks to be airworthy
[17:49:41] <PetefromTn> Connor, don't feel bad man, I mangled my flanges on my RF45 build and I was able to use a brass rod to kinda true them up while they were spinning and they looked okay...
[17:50:18] <Connor> Not biggie. I'll sand the top and get the tooling marks out.. and then true up the flanges at some pint.
[17:50:19] <Connor> point.
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[17:50:50] <PetefromTn> Andy must be doing well for himself as he is now looking at fighter aircraft with VTOL for toys....
[17:51:21] <IchGuckLive> By im off !
[17:51:23] <PetefromTn> Jeez between SSI owning several planes and Andy getting ready to buy a Harrier I am feeling a bit gunshy around here LOL
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[17:52:06] <PetefromTn> I want a plane to play with sigh...\
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[18:03:09] <ssi> :D
[18:03:23] <ssi> planes planes everywhere, and not a one to fly
[18:04:17] <PetefromTn> Kinda like my Project Fiero GT I guess huh...only one helluva lot more expensive LOL
[18:04:30] <ssi> potentially
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[18:07:34] <PetefromTn> Only I can drive my Fiero GT when I want to LOL
[18:07:56] <ssi> I can fly my airplanes when I want to, assuming they're put together
[18:08:03] <ssi> if you pull your fiero apart, you can't drive it either ;)
[18:08:33] <PetefromTn> I am not gonna pull my Fiero apart until I have the 3800 turbo motor that is going to be going back in it ready.
[18:09:06] <PetefromTn> Only I don't have the motor nor the spare engine cradle to put it on yet LOL
[18:09:08] <archivist> conversion of toy to kit....kit to toy always takes longer
[18:09:27] <PetefromTn> huh?
[18:11:31] <PetefromTn> After I eat my Peanut Butter and Jelly and a Half Sammich, I am gonna try to crank up the VMC and machine this perch and hole for the tapped pinch bolt. Then I can slot it and see if it will work. damn bolts that hold it on are metric something like 8mmx1.25 so I gotta go buy some studs that size somewheres.
[18:11:55] <PetefromTn> Anyone here grind their own engraving bits, single fluters?
[18:12:23] <archivist> I have ground one or two
[18:12:34] <PetefromTn> yeah do tell...got pics?
[18:13:16] <archivist> used an antique tool and cutter grinder no pics of operation though
[18:13:18] <Loetmichel> PetefromTn: all the time
[18:13:23] <PetefromTn> Nothing like a tall COLD glass of milk and a peanut butter and jelly sammich
[18:13:41] <Loetmichel> but free hand and TC bits
[18:13:47] <PetefromTn> Loetmichel: Can ya do it if you don't have one...
[18:13:59] <PetefromTn> whatsa TC bit?
[18:14:07] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=8958
[18:14:11] <Loetmichel> Tungsten carbide
[18:14:17] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=8961
[18:14:21] <PetefromTn> Oh okay carbide blanks
[18:14:31] <archivist> PetefromTn, this is the rear of the machine http://www.archivist.info/cnc/works2008/P1010214.JPG
[18:14:46] <Loetmichel> https://www.youtube.com/watch?v=4iaFb6WInuw
[18:15:04] <Loetmichel> PetefromTn: not blanks... broken mill bits ;-)
[18:15:47] <PetefromTn> Thats what I am hoping to use some broken 1/4 inchers or old drill bits.
[18:15:57] <ssi> that's a good idea
[18:16:09] <ssi> I could probably fixture a spindex on an angle plate on my surface grinder
[18:16:14] <ssi> conically od grind them
[18:16:18] <PetefromTn> Standby watching the stockelshleifenwhatchamacallit video
[18:16:21] <ssi> then reposition flat and grind the flat
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[18:16:51] <archivist> then sharpen
[18:16:58] <Loetmichel> PetefromTn: "stichel" is german for "engraving bit"
[18:17:09] <Loetmichel> and "schleifen" is grinding
[18:17:16] <CaptHindsight> http://chicago.craigslist.org/nwc/tls/3897132604.html does this look like a J head?
[18:17:28] <skunkworks_> I make the carbide engraving bit by mounting it in a dremel - a diamond wheel in the other dremel. ground it to a point - then ground half away
[18:17:34] <PetefromTn> Loetmichel: Yeah I know man I was just bustin your chops LOL..
[18:17:41] <Loetmichel> but granted: i had to do about 20 to have the first working ;-)
[18:18:00] <PetefromTn> Thats what I was afriad you would say
[18:18:31] <archivist> get the clearance right
[18:18:31] <PetefromTn> I actually have done the same thing with a cordless drill and my handheld pneumatic belt sander which incidentally KICKS ASS!!
[18:18:32] <Loetmichel> needs a bit of experience to do it without any grinding guide ;-)
[18:18:33] <skunkworks_> heh - similar to what Loetmichel did :)
[18:19:03] <PetefromTn> skunkworks_: LOL
[18:19:59] <PetefromTn> I need a carbide one with a .030 or so radius on the head, does not have to be perfect but as long as it cuts. Any tips on the angle of the grind along the shaft?
[18:20:46] <PetefromTn> It just needs to be halfway and no more right and maybe with the angle beyond square towards the direction of cut no?
[18:21:13] <PetefromTn> I bought some for my RF45 when I was doing a lot of relief engraving for cheap but I am pretty tapped out right now...
[18:21:40] <PetefromTn> It would be nice to be able to get engraving with this thing for free until I sell some more parts LOL
[18:27:40] <Loetmichel> PetefromTn: i assume you mean inch?
[18:28:38] <PetefromTn> Loetmichel: Yeah sorry man Inch and the tip diameter is .020-.030 Nothing fancy here and with a 1/4 inch shank.
[18:28:55] <Loetmichel> a proper engraving bit is curt EXACTLY in half, and the leading edge is "ground free" by grinding the trailing edge more than the leading edge
[18:29:23] <Loetmichel> i am used to 1/8" shanks
[18:29:39] <Loetmichel> but i assume 1/4" is much similar, even more easy
[18:29:43] <PetefromTn> Loetmichel: Okay. Gonna try it here in a bit.
[18:30:27] <PetefromTn> So are you saying the unground part of the cone shape is not round but tapered?
[18:30:39] <Loetmichel> right
[18:30:51] <Loetmichel> no, not tapered
[18:31:33] <PetefromTn> So you grind the cone shape first, then cut the halfway grind into one side, then you try ti carefully grind away the relief on the back of the leading edge and around to the other side then?
[18:31:42] <archivist> yes
[18:32:04] <Loetmichel> PetefromTn: loop at what io do after 4:06 in the video
[18:32:11] <PetefromTn> Cool.. We'll see how terrible I do at it now in a bit.
[18:32:13] <archivist> just buy pre ground blanks
[18:32:37] <PetefromTn> If I was gonna buy pre ground blanks I would just but proper engraving cutters first...
[18:33:03] <Loetmichel> tha bit is ground at the circumfence, just shy of the leading edge standing upright on the grinding disc
[18:33:09] <Loetmichel> so you get the "free angle"
[18:33:45] <PetefromTn> Aah crap just got a text from the weather man on my smartphone that we are in for some big thunderstorms. I don't usually power up the CNC's when there is thunder around.
[18:34:02] <PetefromTn> Loetmichel: Lemme watch that video again here sec.
[18:34:02] <Loetmichel> [20:31] <PetefromTn> So you grind the cone shape first, then cut the halfway grind into one side, then you try ti carefully grind away the relief on the back of the leading edge and around to the other side then? <- exactly
[18:35:14] <Aero-Tec2> does the tool table editor drop lines starting with ;?
[18:35:16] <Loetmichel> PetefromTn: oh, are we a bit pussy? (thunderstorms)
[18:35:20] <Loetmichel> ... just kidding ;-)
[18:35:55] <PetefromTn> Yeah man I am a BIG PUSSY when it comes to thunderstorms and my expensive CNC toys in the shop..
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[18:36:03] <Aero-Tec2> can one edit out lines by using ; and not have them over written by the editor or the tool table tool
[18:36:18] * Loetmichel had THAT a few days ago: https://www.youtube.com/watch?v=Y456lJMXs3A
[18:36:23] <Loetmichel> (bit dark)
[18:36:27] <PetefromTn> Just watched the video again, I think I get what you are saying...
[18:37:35] <PetefromTn> Oh well I will just wait till later when the storms pass and run the spotface and drill for the pinch bolt. I don't have the studs for the mounting plate yet anyways....
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[18:49:08] <ssi> bored :(
[18:57:01] <archivist> make something
[18:57:10] <ssi> I'm at work... my options are limited :)
[18:57:21] <ssi> I guess I could... do work... but that sounds boring too
[18:58:59] <archivist> real work can be boring I know
[18:59:28] <ssi> Connor: I ordered some AC spindle bearings for the 704
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[19:01:03] <Loetmichel> ssi: hmm, nice job... last time i was bored at the company must be 2 companys ago ;-)
[19:01:23] <ssi> Loetmichel: I get hung up waiting on other people a lot :)
[19:01:32] <PetefromTn> apparently that will also change the pulley config
[19:01:37] <ssi> will it?
[19:01:50] <Loetmichel> at the moment it is more like " where can i get that cloning vat?"
[19:01:59] <ssi> Loetmichel: oh trust me I've had those moments :)
[19:02:07] <PetefromTn> yeah the tophat depth apparently.
[19:02:21] <ssi> deeper or shallower?
[19:02:33] <ssi> if it's deeper, no biggie, I can always deepen it myself
[19:03:06] <ssi> I need to get a chuck to mount on my rotary table...
[19:03:47] <Loetmichel> ssi: i have them continously
[19:03:53] <Loetmichel> for the last three years
[19:05:03] <Loetmichel> i have my full 25 holidays for this year AND 6 from last year i couldnt take because of to much work...
[19:05:30] <ssi> they should pay them out to you!
[19:05:30] <PetefromTn> Honestly I dont know the entire dynamics of the way it is put together but Connor was initially saying that since you are using the original bearings and NOT going with a power drawbar Hoss's plans are fine.
[19:05:54] <ssi> that's fine
[19:06:02] <ssi> do them to his plans and I'll sort it out if/when I change the bearings
[19:06:05] <ssi> but I went ahead and ordered them
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[19:07:46] <PetefromTn> I would put them in if I were you. I would also go ahead and do the power drawbar you are gonna want it sooner than later.
[19:07:49] <Loetmichel> ssi: i'd rather not. if i get my offtime payed out the money wil be gon a month later... but my free time will be even less than now... i HOPE to take a lenghly vacattion later this year...
[19:08:16] <ssi> just make sure you take the vacation :)
[19:08:19] <Loetmichel> my paycheck is small anyway
[19:08:29] <PetefromTn> Mine's nonexistant...
[19:08:34] <Loetmichel> compared to that of my wife ;-)
[19:08:45] <ssi> yea that's right, you're the one with the sugar momma ;)
[19:08:46] <PetefromTn> Hey me too!!
[19:09:17] <Loetmichel> <-has 1453 eur a month on his paycheck
[19:09:32] <Loetmichel> ... wife has about triple that ;-)
[19:09:43] <PetefromTn> It has always been that since she works in the medical field she gets health insurance for way cheaper than I can.
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[19:10:07] <ssi> room full of bums, I tell you what
[19:10:11] <Aero-Tec2> tool touch off
[19:10:13] <PetefromTn> Yeah buddy..
[19:10:33] <Aero-Tec2> Tool touch off to workpiece or Tool touch off to fixture
[19:10:35] <PetefromTn> But I make some decent money here and there or I would be working for someone else too...
[19:11:02] <Aero-Tec2> what the diff?
[19:11:13] <Aero-Tec2> looked it up and still am unsure
[19:11:31] <PetefromTn> I usually do the tool touch off to fixture and use the table and a 123 block or something and select the tool table when entering the infor.
[19:12:02] <PetefromTn> Then when I touch off the tool to the part I use tool touch off to workpiece and select G54 in the dropdown.
[19:12:14] <PetefromTn> Dunno what the actual difference is but it works for me that way.
[19:12:16] <Aero-Tec2> Tool touch off to fixture does not sound like what I want as it seams to be relative to the 9th coordinate system
[19:12:44] <PetefromTn> Have not tried it that way on mine.
[19:12:55] <PetefromTn> or rather the other way LOL
[19:13:09] <PetefromTn> I'm surely doing it wrong I usually do ..
[19:13:19] <PetefromTn> ;)
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[19:14:26] <PetefromTn> ssi: When I worked as a full time professional Custom cabinet builder I paid for our insurance and my wife did not work for almost ten years.....
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[19:14:34] <JT-Shop> tool touch off to fixture is when you have a tool changer or tools like Kwik Switch
[19:14:42] <ssi> I did cabinetwork for a couple years
[19:14:52] <Aero-Tec2> I have no home switches for my lathe, so I use tool 1 and zero it off of stock
[19:14:53] <PetefromTn> Then I had to have lung surgery when they thought I had cancer
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[19:14:57] <JT-Shop> and you touch off each tool to the same spot for Z
[19:15:08] <JT-Shop> then use any sane tool to touch off to the material
[19:15:51] <PetefromTn> JT-Shop: Thats what I was trying to say LOL...
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[19:16:11] <PetefromTn> Gonna go out to Fastenal and pick up these studs I need for this router plate.
[19:16:21] <Aero-Tec2> put in stock and tool 1, do a end cut to get a true zero and set Z zero with touch off
[19:16:33] <JT-Shop> yep
[19:16:52] <JT-Shop> and have tool touch off to material selected
[19:16:58] <Aero-Tec2> does it matter what mode I am in while doing that?
[19:17:03] <JT-Shop> and the Z axis too LOL
[19:17:05] <PetefromTn> I found that you have to make sure the tool you are touching off is indicated on the bottom of the screen and once you load it into the table go up to File and hit reload tool table to make it stick I guess..
[19:17:07] <JT-Shop> mode?
[19:17:17] <Aero-Tec2> Tool touch off to fixture or Tool touch off to workpiece?
[19:17:40] <JT-Shop> are you using more than one tool per setup?
[19:17:45] <PetefromTn> I also hit save on the tool table before I do that.
[19:17:50] <Aero-Tec2> yes
[19:18:15] <JT-Shop> then use tool touch off to material to set the Z0 of the material
[19:18:20] <PetefromTn> Honestly loading tools in LinuxCNC was a bit confusing to me
[19:18:25] <Aero-Tec2> tool one is set to 0,0 offset
[19:18:32] <JT-Shop> have you seen the little tutorial on my web site?
[19:18:39] <Aero-Tec2> no
[19:18:47] <Aero-Tec2> would love to see it
[19:19:05] <JT-Shop> http://gnipsel.com/linuxcnc/index.html
[19:19:10] <Aero-Tec2> all my other tool offsets are based on tool 1
[19:19:10] <PetefromTn> Gotta go guys see ya in a bit. Peace
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[19:19:57] <Aero-Tec2> so tool one is 0,0 and tool 2 would be like -1.23,-0.590
[19:20:07] <Aero-Tec2> all done with touch off
[19:20:47] <JT-Shop> and you use tool 1 to touch off to the material?
[19:22:09] <Aero-Tec2> yes
[19:22:22] <Aero-Tec2> tool one sets stock zero
[19:22:37] <Aero-Tec2> and all other tools are offset from tool one
[19:22:55] <Aero-Tec2> but I keep messing things up each time I add a new tool
[19:23:21] <Aero-Tec2> and have to redo all tool offsets each time I try to add a new tool
[19:23:36] <Aero-Tec2> not sure how or why I do
[19:24:42] <Aero-Tec2> to start I need to zero the machine, so load tool one and some scrap stock
[19:26:40] <Aero-Tec2> trim end and set zero for G54
[19:27:47] <Aero-Tec2> do a light cut on the OD and measure, use that number and enter it into touch off for G54
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[19:28:14] <Aero-Tec2> that zeros z and x of the lathe
[19:28:36] <Aero-Tec2> now load in next tool
[19:29:24] <Aero-Tec2> touch off the new tool and use enter offsets into tool table
[19:29:52] <Aero-Tec2> but some how I screw things up
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[19:41:58] <ssi> lathe tool offsets are much harder than mill offsets I feel
[19:42:07] <Aero-Tec2> JT-Shop, so does "Tool Touch off to fixture" auto set G59.3 and the selection of G54 or selecting the tool table have no effect of things?
[19:42:11] <ssi> and I did the same thing with my g0602... I picked one tool to be the "reference" tool
[19:42:15] <ssi> and everything else was based from that
[19:42:41] <ssi> on my HNC, I reference everything to the face of the turret
[19:44:33] <Aero-Tec2> if I just use "Tool touch off to workpiece" load tool 1 and use tool one to set zero of G54 based on tool 1
[19:45:41] <Aero-Tec2> then loaded other new tools and did the zero off of workpiece and use set tool table would that work?
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[19:50:26] <Aero-Tec2> should G92.1 be part of the starting INI of Gcode? the INI string at the start of each Gcode file
[19:52:02] <Aero-Tec2> not sure about G92, is it set to Zero at start of EMC and or is it set to zero at start of each Gcode run?
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[19:54:32] <tjtr33> JT's suggestion to read the tutorial is working for me (on a mill) http://gnipsel.com/linuxcnc/g-code/gen05.html
[19:58:15] <Aero-Tec2> JT-Shop, I have a quick change tool post, so manual tool changes, should I be looking at Tool Turret Setup?
[20:00:10] <ssi> qctp is basically a toolchanger
[20:00:21] <ssi> it's a manual toolchanger, but you do have repeatable offsets
[20:01:15] <ssi> have you gotten into radius compensation yet?
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[20:04:43] <Aero-Tec2> not yet
[20:05:11] <Aero-Tec2> still learning all this stuff
[20:08:53] <Aero-Tec2> so you have to setup fixture first, then to workpiece
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[20:33:29] <Aero-Tec2> JT-Shop, thanks for the tutorial
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[20:41:51] <JT-Shop> Aero-Tec2: I'm back
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[21:50:31] <DJ9DJ> gn8
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[22:25:55] <PetefromTn> http://s150.photobucket.com/user/matospeter/media/Cincinatti%20Arrow%20500%20Retrofit/IMG_20130701_171041_zps61d2386a.jpg.html?sort=6&o=1
[22:26:00] <PetefromTn> http://s150.photobucket.com/user/matospeter/media/Cincinatti%20Arrow%20500%20Retrofit/IMG_20130701_171050_zpsb07a216a.jpg.html?sort=6&o=0
[22:26:15] <PetefromTn> Looks like it fits pretty good upon initial test fit.
[22:26:34] <PetefromTn> Gonna machine the pinch bolt and slot after dinner here and hopefully get the router installed.
[22:26:45] <PetefromTn> This thing seems pretty damn solid so far.
[22:26:59] <PetefromTn> We will see how it actually works pretty soon I guess.
[22:27:38] <PetefromTn> It will be sure nice to have a CNC router as well as a VMC at the same time. Now I just need to figure out how to implement some kinda vacuum shoe setup for my wet or dry.
[22:27:52] <PetefromTn> So as I can machine some wood or plastic without it getting everywhere.
[22:33:06] <skunkworks> PetefromTn: cool!
[22:35:12] <JT-Shop> Sweet!
[22:49:38] <PetefromTn> I can't wait to get it setup so I can do some more engraving work with the big mill.
[22:50:06] <PetefromTn> Its pretty nice tonight here I am thinking about having a bonfire out back and roasting marshmallows with the kids...
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[22:53:15] <PetefromTn> I am not entirely sure the best way to setup the router in the offsets yet.
[22:53:39] <PetefromTn> I am hoping it will be simple and that I can quickly switch between the main spindle and the router spindle somehow.
[22:54:14] <PetefromTn> The plan is to be able to set it up in a minute or two but I am open to suggestions.
[22:55:34] <PetefromTn> If everyting is like I hope it is with the bolt pattern machined into the face of the spindle body the router should be exactly to the right of the spindle centerline but no guarantees.
[22:56:40] <JT-Shop> just set it up in a different coordinate system
[22:58:32] <PetefromTn> Like G59 or something?
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[22:58:52] <JT-Shop> well the next unused one is cool
[22:58:54] <PetefromTn> Have you ever done anything like this
[22:59:25] <PetefromTn> Yeah I am thinking maybe the last available one since I may use the ones 54,55, 56 etc for fixture offsets more often.
[22:59:28] <JT-Shop> yes, I have a spring loaded center punch that mounts to the side of my plasma torch
[22:59:40] <PetefromTn> Oh thats a cool idea...
[22:59:41] <JT-Shop> do you have 6 vises?
[22:59:53] <PetefromTn> nope not yet LOL
[23:00:01] <PetefromTn> and I doubt I could fit more than 2 on the table.
[23:00:12] <JT-Shop> unless you have more than one fixture/vise you only need to use G54
[23:00:20] <PetefromTn> However I have run multiple parts before on fixtures'
[23:00:41] <JT-Shop> unless you have fixtures that are indexed and can be swapped without losing position
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[23:00:46] <PetefromTn> I have done up to eight I think before of the same part on plates and honestly often I will just draw it in the cam that way
[23:01:14] <JT-Shop> in that case use the next to last one, leave the last one for touch off
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[23:01:37] <PetefromTn> The shop I worked in used to routinely make production parts that were built onto several long fixutres. Say four or five per fixture and each part was its own coordinate.
[23:01:45] <JT-Shop> or use the tool table to define the offset
[23:02:01] <PetefromTn> HUh how do you mean next to last one for touchoff?
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[23:02:34] <PetefromTn> I have been using the tool table to load all my offsets and then select a tool number one that is my setup tool
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[23:03:31] <PetefromTn> That tool Is what I use to get my Z offset for the work. the rest of the tools are based off that one or rather I have since used the 123 block method on the machines table to set the tools when I install them.
[23:03:56] <PetefromTn> On my RF45 I had the TTS Tormach tooling and I set them up offline on my large granite surface plate.
[23:04:09] <JT-Shop> read about tool touch off here http://www.linuxcnc.org/docs/html/gui/axis.html#_menu_items
[23:04:42] <PetefromTn> I have not made a fixture for the cat40 that will allo me to use the offline tool measurement on the granite plate yet but I plan to.
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[23:10:16] <PetefromTn> I have actually read that before but I don' t understand what you mean by using the last offset for tool touch off exactly.
[23:13:17] <PetefromTn> Just noticed the keystroke table there and saw some things I had not seen before. Specifically the feedrate override keystroke. looks like you hit ', and then 1-9 or something, anyone use this often?
[23:14:24] <PetefromTn> Also the ability to move from Continuous to incremental without the mouse or looking at the screen will come in handy for me until I get the pendant I want.
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[23:34:59] <JT-Shop> using the MPG on 0.010 per click is about as continuous as I want
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[23:38:00] <Tom_itx> if i go too high the steppers loose steps
[23:38:18] <Tom_itx> i had to change my 'coarse' setting
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[23:40:22] <PCW> You can put the output through a lowpass filter to make larger increment jogs less jolting
[23:41:01] <Tom_itx> software filter?
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[23:41:26] <Connor> I just need to help him set it up for velocity mode vs incremental. We don't have a velocity mode yet
[23:41:54] <PCW> yes, the lowpass component
[23:42:05] <Tom_itx> i haven't looked at that
[23:42:51] <Tom_itx> seems the longer you mess with linuxcnc the more you didn't know was there
[23:44:15] <Tom_itx> http://www.youtube.com/watch?v=rI-15fovYEY
[23:44:16] <Tecan> (rI-15fovYEY) "drill SQUARE HOLES Japanese form tool" by "Joey T" is "Tech" - Length: 0:02:04
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[23:49:46] <JT-Shop> Tom_itx: I had to use lowpass on my BP to keep it from walking across the floor
[23:49:47] <Tom_itx> PCW, so all the steps get there they're just delayed?
[23:50:04] <Tom_itx> what effect would it have on lower step settings on the MPG?
[23:50:15] <Tom_itx> ie can i apply it to all the output
[23:50:23] <Tom_itx> or just the 'coarse' setting
[23:50:24] <JT-Shop> http://www.linuxcnc.org/docs/html/examples/mpg.html
[23:50:38] <Tom_itx> i'm reading the man page on it
[23:50:45] <JT-Shop> second example uses lowpass
[23:51:23] <skunkworks> our machines accelleration is a bit on the low side - so we didn't need the lowpass.
[23:53:40] <JT-Shop> I don't recall if I used it on the CHNC or not
[23:54:23] <Tom_itx> how does the scale setting affect the mux4 input setting on the selector switch?
[23:54:39] <Tom_itx> the example has scale set to 1000
[23:55:17] <Tom_itx> seems to be 2 scale settings
[23:55:20] <JT-Shop> http://www.youtube.com/watch?v=J2cbkVZgUko
[23:55:21] <Tecan> (J2cbkVZgUko) "Webb Pierce I'm Walking The Dog" by "Arnescountry" is "Music" - Length: 0:01:45
[23:56:07] <JT-Shop> I'll leave you with a little Webb Pierce
[23:56:18] * JT-Shop heads in to start chow