#linuxcnc | Logs for 2016-08-12

[00:09:47] <DaViruz_> cool, i also used djgpp back in the day
[00:12:34] <jesseg> well back to DXF for me :P
[01:03:45] <witnit> Maaaaaaaacccc
[01:03:54] <MacGalempsy> yo
[01:04:00] <witnit> play after a few?
[01:04:23] <MacGalempsy> cant. finishing up some bf4 and then off to bed. We are leaving for New Orleans in the AM
[01:04:36] <witnit> oooh safe travels!
[01:06:44] <MacGalempsy> how did the client mtg go?
[01:08:26] <witnit> Gooood!
[01:12:54] <witnit> im playing a round of chess with this kid, he says hes studying economics. I told him it might be a dying profession, like studying icebergs or something...
[01:15:18] <MacGalempsy> well, I almost got the z axis lifts done today on my new printer
[01:16:06] <witnit> pictures
[01:16:18] <MacGalempsy> one sec
[01:18:16] <MacGalempsy> they are loading to flicker
[01:18:24] <witnit> what did you call me
[01:18:26] <witnit> :P
[01:19:48] <MacGalempsy> https://www.flickr.com/photos/58181938@N03/28850576201/in/dateposted-public/
[01:20:40] <MacGalempsy> there is also a pic of todays material score
[01:20:46] <witnit> oooh thats gonna work
[01:20:54] <witnit> looks like it glides smoooth
[01:21:52] <witnit> you have a very girly keychain
[01:22:09] <witnit> what is that mammoth thing?
[01:22:19] <MacGalempsy> trying to decide if the gantry should move, or if the bed should raise
[01:22:56] <MacGalempsy> its going to be a multitool. heated chamber printer, but also want to do some multi axis stuff with it
[01:23:07] <MacGalempsy> multi-5 or more
[01:23:57] <MacGalempsy> I was so tired of my 3d prints looking like crap that this time I am going to do it right
[01:24:49] <witnit> I thought about making some kind of micro machine with as many axis as possible and just carry it into a place and be like, this is my resume
[01:25:05] <MacGalempsy> you think the bed should move up/down or the gantry should move up or down?
[01:26:20] <MacGalempsy> the print area should be X30cmxY35cmxZ45cmz
[01:27:03] <witnit> ahh
[01:27:05] <witnit> hmmmm
[01:27:22] <MacGalempsy> 24v system. the whole thing is mounted into an audio server wall rackmount cabiinet
[01:27:28] <witnit> its hard to say I mean it guess it should be decided around your rigidity
[01:29:19] <MacGalempsy> I kind of leaning towards a changing the bed so the x/y is locked into position
[01:29:30] <jesseg> hmmm blah. Should I have a zero length arc be a point, or a full circle? (i.e. if start and stop angle are the same.) Some softwares does it one way, others the other..
[01:30:08] <jesseg> MacGalempsy, yeah I agree, raising the bed is better way probably
[01:30:49] <MacGalempsy> the brackets can be reversed, with the motors at the top instead of the bottom. If I flip it, then all the motor wires can be shorter
[01:31:59] <MacGalempsy> ok. it is way too late. got to get up at 0700! catch you guys later!
[01:32:12] <witnit> take care
[02:11:43] <jesseg> Any chance someone could see if this DXF file opens in autocad? http://videoflier.com/files/gasket1.dxf Thanks!
[02:11:49] <jesseg> Good night, I'll check in morning.
[02:12:23] <jesseg> anyway I think I got DXF export for polylines/polygons and arcs working in my cad program.. ugh.
[02:13:32] <Deejay> moin
[02:19:34] <jesseg> Mornin
[02:19:53] <jesseg> but it's midnight here so I'm going to bed :P
[02:20:01] <Deejay> sleep well
[02:20:10] <jesseg> hey Deejay do you have autocad?
[02:20:15] <Deejay> nope
[02:20:24] <Deejay> i'm using qcad on linux :)
[02:20:52] <renesis> is it actively developed?
[02:20:57] <jesseg> me neither but I added primitive DXF export (polys and arcs) to my home made linux CAD program
[02:21:02] <renesis> i used that shit a long time ago and it was pretty good
[02:21:22] <Deejay> not sure
[02:21:25] <jesseg> did qcad get renamed librecad?
[02:21:53] <renesis> Last Updated on Monday, 23 May 2016 13:43
[02:22:02] <jesseg> I installed qcad with apt-get install qcad and when it was done I could not find qcad anyplace on the computer, but librecad was installed and fresh
[02:22:05] <Deejay> is think librecad is something different
[02:22:12] <jesseg> yeah I thought so too.
[02:22:23] <jesseg> renesis, do you have autocad?
[02:22:31] <renesis> no
[02:22:47] <renesis> well, who knows maybe in some very old installer directory
[02:23:00] <jesseg> well I meant did you have it handy to test my created DXF file with :D
[02:23:14] <renesis> i just have solidworks
[02:23:21] <jesseg> oh does it import DXF? http://videoflier.com/files/gasket1.dxf
[02:24:00] <jesseg> Deejay, actually I would be interested to know if your qcad correctly opened that file too
[02:27:04] <jesseg> well I go to bed. I'll check in morning for any followups you may provide. Thanks! :D
[02:30:45] <renesis> yeah it should import dxf
[02:30:54] <renesis> but i just want to eat soup and crash out
[02:32:14] <jesseg> go for it :D (eating soup and crashing out, that is.)
[02:32:17] <jesseg> Good night!
[02:39:53] <Computer_barf> i hereby revoke crashing out
[02:40:01] <Computer_barf> both of you have to stay up
[02:44:50] <archivist> it is morning anyway (8am)
[02:46:52] <Deejay> 9 am ;)
[02:54:00] <archivist> the meridian is here :) we kept it
[02:54:05] <renesis> is 12:30, perseides are peaking tonight
[02:54:11] <renesis> i dunno where to go watch
[02:54:16] <renesis> also i have very little weed left
[02:55:04] <archivist> jesseg, an old copy of qcad opens it without crashing or errors
[02:55:34] <roycroft> go as far away from a city as you can
[02:55:44] <renesis> the place i went last time is like 30 miles away too much fun for whats left of my my brakes and tires
[02:55:53] <renesis> -my
[02:56:31] <renesis> also this city isnt well lit enough for driving, which annoys the fuck out of my but is convenient for shit like this
[02:56:37] <renesis> its flat as fuck around here tho
[02:57:11] <renesis> i think local state park w/ foothills is closed at night
[02:58:04] <roycroft> flat is good
[02:58:08] <roycroft> you can see more of the sky
[02:58:10] <renesis> hmm whatever if cops tries to give me a ticket i beat him up
[02:58:52] <renesis> roycroft: the only place kind of open has hills facing NW but i think there is enough field before itll work
[02:59:42] <renesis> like, 3 or 4 years ago i forgot completely and was driving home along the coast at 3am
[02:59:56] <roycroft> i'll be camping on the coast next week
[03:00:04] <renesis> all this shit started falling, i was convinced it was little chinese pods filled with north koreans
[03:00:06] <roycroft> well away from civilization
[03:00:10] <renesis> where?
[03:00:15] <roycroft> near coos bay oregon
[03:00:20] <renesis> oh neat
[03:00:25] <roycroft> the meteor shower will still be visible then
[03:00:31] <roycroft> not as intense as tonight
[03:00:35] <roycroft> but it will be a lot darker there
[05:23:22] <jthornton> morning
[05:35:28] <XXCoder> snake in boots
[05:37:07] * Deejay only knows puss in boots
[05:38:20] <XXCoder> its from woody
[05:39:02] <XXCoder> Deejay: http://treasure.diylol.com/uploads/post/image/433498/resized_buzz-and-woody-everywhere-meme-generator-those-are-andy-s-mom-s-toys-they-have-the-same-names-as-us-d4cbd5.jpg
[06:40:21] <XXCoder> http://interestingengineering.com/hexagonal-wall-patterns-create-quick-sound-insulation/
[06:40:34] <XXCoder> I wonder how well it would work for cnc machine sound isulation heh
[06:43:31] <Sync> the only innovation there is the shape, kinda
[06:43:45] <XXCoder> lol ok
[06:43:45] <archivist> added cost at that
[06:45:04] <Sync> XXCoder: the stuff has been around for years
[06:47:05] <archivist> marketing, making something "new" by a minor repackaging
[06:55:57] <jthornton> http://interestingengineering.com/video/metalworker-creates-cube-within-cube-within-cube-lathe/
[06:58:47] <Tom_itx> turner's cube
[07:00:24] <XXCoder> nice
[07:00:39] <XXCoder> just looked though my 3d printer box
[07:00:53] <XXCoder> reel was a surpise Im supposed to get just small sample
[07:03:31] <jthornton> I wondered how they made the last cut on the cube but hot glue explains it all
[07:05:57] <XXCoder> different shot per face lol
[07:06:03] <XXCoder> make it interesting
[07:10:54] <XXCoder> jthornton: the oppoite of the gloved one
[07:11:24] <XXCoder> jthornton: since it was made from lathe the finishes are amazing
[07:13:56] <malcom2073> Heh, we just got a sound insulated wall at work. Looked much simpler and esaier than that, and works amazing
[07:15:00] <XXCoder> malcom2073: I do want just enough to surround machine
[07:15:09] <XXCoder> OI dont wanna annoy neighbors with machine
[07:15:17] <malcom2073> Ah heh
[07:15:30] <malcom2073> The key to sound deadening is air gaps
[07:16:01] <_methods> glue styrofoam cups to your walls and ceiling
[07:16:06] <malcom2073> hehe
[07:16:44] <XXCoder> first step: drink lots coffee for few weeks
[07:16:56] <XXCoder> second step: relax at hospital for a week
[07:17:06] <XXCoder> third: glue em to walls!
[07:17:13] <_methods> believe it or not, you can actually buy empty cups
[07:17:56] <XXCoder> shocking.
[07:18:07] <XXCoder> heh
[07:18:24] <XXCoder> dang I somehow set keyboard to overwrite mode
[07:20:06] <malcom2073> Why we still have overwrite mode is beyond me
[07:20:44] <XXCoder> dunno but im stuck in it, apple keyboard
[07:21:41] <XXCoder> found a way
[07:22:23] <malcom2073> command-q-applekey-d
[07:22:24] <malcom2073> or something
[07:22:45] <XXCoder> in linux, using apple keyboard, its just numberpad 0
[07:22:54] <XXCoder> must be numberlock off mofr
[07:22:57] <XXCoder> mode
[08:04:25] <debiancnc> da
[08:04:43] <debiancnc> +i
[08:06:26] <archivist> -1
[08:09:34] <ctjctj> Hello. When using axis 2.7 (most recent) and the file has a manual tool change, what is the best reference for how to reset the Z axis to account for the new tool length?
[08:18:15] <malcom2073> ctjctj: If you figure that out, please, let me know!
[08:20:05] <ctjctj> malcom2073, right now my method is to stop the run (the tool is retracted.) Make the tool change. Touch off in Z. send the tool back to retract position, "run program at" on the line that positions the tool and then runs the tool change request. Press the "continue" button and it goes on.
[08:22:19] <archivist> some use a height switch to touch off to, the worst example of http://www.ebay.co.uk/itm/1Pc-Milling-Tools-CNC-Z-Axis-Tool-Setting-Touch-Plate-Probe-Mach3-Router-Mill-/151993876548
[08:23:04] <archivist> others are proper probe technology
[08:23:45] <malcom2073> ctjctj: That's what I've been doing
[08:25:08] <ctjctj> archivist, I made an aluminum z hight set. Round and exactly 0.7500 tall. It has a flat disk held under a retaining ring. Spring loaded. Wire from that to an in pin. Aligator clip for the tool. put disk where you want to probe for Z height. Run probe subroutine. Z touch off is now set correctly.
[08:25:19] <archivist> my tooling cannot be measured like that though
[08:25:21] <ctjctj> The disk in the center is spring loaded so if you come down a little to hard it gives.
[08:26:21] <archivist> try finding the centre line of http://www.archivist.info/cnc/target.php
[08:26:39] <ctjctj> archivist, how to do the touch off is well documented. Everything from the paper drags to real reneshaw probes to Screw with wire in table. It is "How do I do it when I'm at the manual change tool prompt"
[08:27:53] <archivist> it should not be at the prompt but after
[08:28:06] <ctjctj> You measure the gear cutter and then measure to the top or bottom. You can measure the outside of your gear blank.
[08:28:45] <archivist> the cutters are not exactly central, I do it visually
[08:29:23] <ctjctj> If I was to do that with my tool, I would replace the disk with a rod on a disk. Known height, say 2.5in tall. Now you can lower until the bottom of the gear cutter touches the rod and use the offset. (or just have a spacer rod to sit on top of my disk thingie.
[08:29:43] <ctjctj> archivist, involute cutters aren't centered? Everything I've read says they are.
[08:30:07] <archivist> one hopes
[08:30:26] <archivist> that cutter is not involute either
[08:31:14] <ctjctj> Ah, I thought the gear shape was a little off but I've never actually cut gears. I'm in the process of building a dividing head.
[08:33:10] <ctjctj> why would the cutters not be centered? And what are we talking about in terms of "not centered" < 0.0001? <0.001?
[08:33:11] <archivist> watch and clocks use cycloid, and the makers of them are not that "accurate" but the resultant gear looks very wrong if a thou off centre on a small watch pinion
[08:33:27] <ctjctj> archivist, got it!
[08:34:05] <archivist> often make one look at it, adjust, make another
[08:34:36] <ctjctj> So we are talking about gear teeth that are maybe 0.015 wide?
[08:35:00] <archivist> or smaller
[08:35:27] <archivist> http://gears.archivist.info/gears/IMG_1214_hires.JPG
[08:36:03] <archivist> must get a new camera for better depth of field
[08:36:21] <ctjctj> I would consider measuring the gear cutter using those numbers to center as if it was accurately positioned. Cut a sample. Adjust. When done record the offset?
[08:37:23] <archivist> except you need to take into account wobble/concentricity of the arbour as well
[08:38:27] <archivist> I have thought of making a database of offsets but grit and human factors....
[08:45:15] <ctjctj> archivist, so my guess is that you aren't doing this with a 70 years old southbend lathe and a 50 year old bridgeport.
[08:45:58] <archivist> home brew 5 cnc and linuxcnc
[08:46:03] <archivist> 5 axis
[08:46:43] <ctjctj> Very very nice.
[08:47:05] <archivist> I think it is a fugly machine
[08:47:12] <malcom2073> It's fugly, but amazing
[08:48:37] <archivist> I have started to remake the support for one of the rotaries
[08:49:44] <ctjctj> It can't be as ugly as my JGRO.
[08:51:00] <ctjctj> I'm in the process of attempting to make it something like ridgid
[08:51:46] <archivist> note the overhang of the rotary http://www.collection.archivist.info/archive/DJCPD/PD/2013/2013_08_11_bevel/IMG_1633.JPG
[08:52:33] <archivist> that was a long while ago before new ball slides
[08:55:45] <ctjctj> That thing is freaking awsume!
[08:57:14] <archivist> that was generating bevel gears with a "rack" form
[08:58:17] <archivist> but while I got the form, the resultant pair did not mesh at the right angle
[09:00:11] <ctjctj> What caused it to have an issue meshing?
[09:01:14] <archivist> I think some errors in the rotary backlash not compensated properly
[09:02:08] <ctjctj> Did you clamp the rotary table after each move?
[09:02:34] * ctjctj is trying to learn here, not criticizes.
[09:03:04] <archivist> not a chance of clamping
[09:03:29] <archivist> gear generation is a continuous process
[09:04:17] <ctjctj> Manually you clamp, cut, rest, unclamp, rotate, repeat.
[09:04:31] <ctjctj> But if you just set the machine to do it then there would be no chance to clamp.
[09:04:34] <archivist> hobbing gets away with rotary backlash due to unidirectional method
[09:05:24] <ctjctj> Yep.
[09:05:55] <ctjctj> Do spur to spur gears mesh? Is it only spur to rack that has problems?
[09:06:38] <archivist> all gears have backlash, unless you add some "spring"
[09:07:42] <ctjctj> Yes. I was asking about your gear cutting. You said "the resultant pair did not mesh at the right (correct) angle". I was asking if spur gears did mesh correctly. If it was only the rack to spur that caused issues.
[09:09:30] <archivist> it was a bevel pair, and this was the maths for traversing the cutter http://www.archivist.info/gear/designbevel.php
[09:10:02] <archivist> and then show http://www.collection.archivist.info/searchv13.php?searchstr=bevel
[09:10:12] <archivist> bottom image
[09:10:48] <pjm> afternoon chaps, can anyone recommend a H-Bridge motor driver with something like 0-5v input capable of handling 24V 10A motor
[09:12:17] <archivist> some of the drives for bldc motors
[09:13:11] <archivist> they have built in shoot through protection
[09:14:09] <ctjctj> archivist, thanks for the images. I'm still at the crude beginner level. I have hopes of cutting gears "soon" but that requires castings, which requires better patterns and flasks (and temps that aren't in the 100s)
[09:15:04] <archivist> ctjctj, use a vertex rotary, save time and has the angular accuracy
[09:16:27] <ctjctj> archivist, uhhhh, I'm hoping to save up enough to get an adjust true six jaw chuck, which I'll use every day.
[09:16:52] <ctjctj> I'm not sure I can afford a vertex rotary table....
[09:17:18] <ctjctj> I'm very very lucky in that my wife supports my hobby. But not to the point of spending the mortgage on toys. *GRIN*
[09:17:19] <archivist> when making a high count gear, the worm and wheel becomes a huge error source
[09:17:45] <ctjctj> I can believe that.
[09:18:54] <archivist> the small one a real vertex was about £120 iirc the larger one is a copy but seems ok
[09:19:10] <ctjctj> In my dividing head, based on dave gingery's design, I used boston gear for the gears. 40:1. I'm looking at 3 to 5 inch diameter gears and if I'm lucky I'll make one 127tooth which I expect to be my largest gear.
[09:21:02] <ctjctj> archivist, amazon has a 4 inch for $178 and a 6 in for $260
[09:21:35] <ctjctj> Not horrid... (And likely cheaper than what I'll end up putting into my home built dividing head)
[09:21:50] <archivist> I did some measuring of a random worm for a giggle http://www.archivist.info/cnc/wormtest/
[09:23:24] <archivist> once upon a time I made some bad gears that got rejected hence I check the gear these days
[09:27:27] <ctjctj> At this point if the number of teeth is correct and they mesh they will be "good enough" for what I need this week. And this week that means a step down for the vertical bandsaw and some other places where I need to change speeds.
[09:27:52] <ctjctj> If I ever am able to cast the lathe beds then I'll be looking at gearing for other reasons.
[09:28:29] <ctjctj> Current goal is to make three Gingery Lathes. one for my son as a metal working lathe, one for me as CNC and one as a wood working lathe.
[09:29:09] <ctjctj> Thanks for the wormtest paper.
[09:29:39] <archivist> that comes with E&OE
[09:29:51] <ctjctj> E&OE?
[09:30:19] <archivist> errors and omissions excepted
[09:31:08] <archivist> estate agents use the term to get away with "mistakes" in descriptions
[09:32:54] <ctjctj> archivist, Thanks. Like the "inspector" that was very careful to report the cracked beam in the house we wanted to buy but failed to notice the sister beam that had been put in place to take over the load....
[09:35:42] <archivist> I later tested the vertex http://www.collection.archivist.info/archive/DJCPD/PD/2016/2016_01_03_wormtest/IMG_2022.JPG
[09:36:43] <archivist> but was running into a resolution problem for accurate measuring
[09:37:46] <JT-Shop> and they builders just pulled out
[09:38:24] <archivist> hmm http://gnipsel.com/images/equipment-shed/e-shed-18.jpg
[09:38:46] <archivist> I kept the url in my browser :)
[09:39:36] <archivist> corner capping ?
[09:41:49] <JT-Shop> done
[09:42:29] <archivist> we await pic 19 with corners and large door
[09:43:15] <JT-Shop> door will be here first of the week
[10:56:01] <Frank_10> --
[11:35:11] <JT-Shop> http://gnipsel.com/images/equipment-shed/e-shed-19.jpg
[11:35:46] <dioz> looks like you need to make some room
[11:36:01] <dioz> lemme give you my address and you can ship me that plasma table
[11:36:02] <archivist> for another shed :)
[11:36:27] <dioz> oh i didn't even click the link tbh
[11:36:50] <dioz> i need to wait for paint till i can do more at this place i think
[11:37:16] <JT-Shop> that's the end of shed building for me
[11:37:21] <dioz> i got most of the grills in
[11:37:31] <dioz> most of my defusers
[11:38:07] <dioz> few more big fans need to be put in but buddy needs to come back from vacation
[11:38:40] <dioz> 10:00 friday morning and i have no work to do
[11:38:47] <dioz> should i start drinking?
[11:38:59] <dioz> maybe wailt till noon i guess
[11:45:48] <SpeedEvil> you've got to get a couple of drinks in to be ready for noon
[11:45:58] <SpeedEvil> It's a stressful event, beginning drinking
[12:04:07] <lair82> Thats a damn nice building JT-Shop
[12:31:13] <XXCoder> wow my shop is done already
[12:32:03] <CaptHindsight> https://youtu.be/HLjS3gzHetA?t=14s Arthur 'Two Sheds'
[12:32:04] <JT-Shop> lair82: thanks
[12:39:09] <SpeedEvil> https://youtu.be/G2YUh57BVaA?t=1380 - I am reminded on on the context of shops
[12:39:16] <SpeedEvil> 'my new shop'
[12:39:19] <SpeedEvil> (not mine)
[12:40:22] <gregnosheds> that's nice
[12:52:16] <FloppyDisk> That shop is amazing (at least from the outside..)
[12:54:41] <XXCoder> JT-Shop: heh been joking about 'my shop' for while
[12:54:50] <XXCoder> it does look great
[16:10:43] <apex> zlog
[17:08:47] <Deejay> gn8
[17:43:57] <JT-Shop> lol I cut 6" off my beard today and the wife didn't even notice
[17:49:58] <XXCoder> I have so much beard your wife dont notice 6"?
[17:50:04] <XXCoder> *you
[17:53:18] <JT-Shop> not really it's 1/2" long now
[18:13:52] <jesseg> LOL she didn't notice....?!?!
[18:14:10] <jesseg> That can't be. I would even notice that and I don't even notice things like that LOL
[18:14:11] <XXCoder> or maybe she didnt care
[18:19:39] <jesseg> was she like "I see you got that lathe of yours working again... stepped a little to close, heh?"
[18:20:10] <FloppyDisk> I didn't know cam racer drivers could drive w/ beards that big? Only Harley or Indian drivers...
[18:33:06] <jesseg> So it seems DXF generally does not specify the line width for polylines or arcs. I mean there is a code for it but a lot of DXF applications ignore it. How is it normally done? I don't use autocad so I don't know. Is it "by layer" and what does that mean?
[18:42:07] <Tom_itx> if you're doing a mechanical drawing why would the line be wider than 1 anyway since it follows the part profile or wireframe etc
[18:43:46] <_methods> i'm pretty sure you can edit the line width of any of them
[18:44:49] <Tom_itx> i dunno, i've never tried disecting dxf or any other transfer format for that matter
[19:02:55] <jdh> line weights/colors/patterns can be specified by layer in autocad
[19:03:10] <jdh> but, afaik, the layer does not define them
[19:03:38] <Tom_itx> i posted tech.pdf on dxf the other day
[19:04:05] <Tom_itx> zlog
[19:04:44] <Tom_itx> http://images.autodesk.com/adsk/files/autocad_2012_pdf_dxf-reference_enu.pdf
[19:04:57] <Tom_itx> http://paulbourke.net/dataformats/dxf/min3d.html
[19:05:09] <Tom_itx> http://www.scan2cad.com/dxf/file-specification/
[19:05:20] <Tom_itx> http://www.fileformat.info/format/dxf/spec/9c99326db53b44a8a3abd9fbb336b62a/view.htm
[19:05:31] <Tom_itx> several different 'levels' of technical
[19:08:33] <_methods> i really don't even understand what he was "asking"
[19:08:46] <_methods> i guess he wasn't asking anything, more of a statement?
[19:10:05] <Tom_itx> he's been trying to figure out line width for arcs i know
[19:10:13] <Tom_itx> and arc direction
[19:10:18] <Tom_itx> but may have gotten that
[19:10:44] <Tom_itx> he's got a digitizer he's trying to format for dxf i think
[19:12:27] <_methods> ah
[19:27:02] <Tom_itx> _methods what's up this evening?
[19:36:46] <_methods> nada just got back from dinner
[19:36:57] <_methods> gettin my rucksack ready for my morning road march
[19:37:37] <_methods> i need to clean up my garage and wire up my dynasty tomorrow
[19:37:50] <_methods> and of course.....yard work
[19:39:03] * jesseg returns
[19:39:30] <_methods> i'm glad i'm not the only one upset about the chrome backspace stupidity
[19:39:32] <_methods> https://productforums.google.com/forum/?utm_medium=email&utm_source=footer#!msg/chrome/D4VMOXTxPwg/qzMBz9DrBAAJ
[19:39:37] <_methods> hilarious
[19:42:19] <jesseg> _methods, yeah, I have an ancient GTCO Rollup III with RS232 port that spits out space separated XY values, so I was trying to create DXF from it. When I had some success doing that, I added simple DXF export functionality to my CAD program.
[19:42:22] <jesseg> Tom_itx, any chance you might test a DXF file for me in AutoCad? http://videoflier.com/files/gasket1.dxf
[19:42:27] <jesseg> Thanks!
[19:42:40] <Tom_itx> in a bit
[19:42:58] <Tom_itx> i'm booted in 32bit win right now... cad is in 64bit
[19:43:07] <jesseg> Thanks! Much appreciated! yeah no rush for sure.
[19:43:09] <Tom_itx> working on another software project
[19:44:03] <_methods> oh yeah?
[19:44:03] <jesseg> But I think I got my cad program exporting polylines and arcs in DXF correctly, except I'm not implementing the DXF layer table yet (since it confuses me and is optional) and various programs ignore various per-entity width
[19:44:07] <_methods> what you making now?
[19:44:16] <Tom_itx> nothing. just fixing
[19:44:28] <_methods> wut?
[19:44:32] <jesseg> I did find out that arcs in DXF seem to all go same way in a given file, and the default direction is left :P
[19:44:34] <_methods> that's not how software works
[19:44:35] <Tom_itx> boreing database work
[19:44:38] <_methods> you don't fix stuff
[19:44:44] <_methods> you just make up some new program
[19:44:49] <_methods> that doesn't work either
[19:45:06] <_methods> and you need it to have some silly name
[19:45:09] <_methods> like eyebat
[19:45:14] <_methods> or oooglie
[19:45:19] <Tom_itx> jesseg, arcs go clockwise
[19:45:31] <jesseg> Tom_itx, not by default in DXF they don't :P
[19:45:52] <Tom_itx> you just said left
[19:46:04] <Tom_itx> so they start at 180 deg and go left?
[19:46:19] <Tom_itx> or at 90 or 270?
[19:46:23] <jesseg> They start at EAST as 0 degrees, then go left. 90 degrees is straight up. 180 is WEST
[19:46:40] <jesseg> :)
[19:46:43] <Tom_itx> but i'm facing up so which way is east?
[19:46:55] <_methods> which hemisphere are you in?
[19:47:02] <jesseg> The default hemisphere
[19:47:12] <_methods> is the grass below your feet or above your feet
[19:47:14] <jesseg> at least in DXFland :D
[19:47:16] <Tom_itx> just messin... it's hard to describe some things...
[19:52:15] <Duc_mobile> mill is finally cutting some AL at 35IPM
[19:52:23] <_methods> nice
[19:52:25] <XXCoder> nice smooth finish?
[19:53:05] <Duc_mobile> looks to be
[19:53:21] <Duc_mobile> at first I wasnt pushing it fast enough so it had a high pitch squeel
[19:55:00] <jesseg> Tom_itx, I did see some mention of extrusion vectors and their sign being related to sweep direction, but couldn't figure it out.. And messing with those settings seemed to move the location of the arc lol
[19:59:43] <Duc_mobile> XXCoder: I should have pushed for a DOC. Currently at .050 DOC .625 WOC and 35 IPM in 6061
[20:00:14] <Duc_mobile> higher DOC i mean
[20:00:17] <jesseg> Tom_itx, The reason I thought it would be nice to be able to set the linewidth is because in some cases you might want to view the actual path of an endmill or plasma cutter, and it'd be real nifty for the actual width to be shown to scale :D
[20:00:56] <Tom_itx> i see
[20:32:50] <Duc_main> I did found out that two hold down clamps were not enough for the AL once I started pushing it. At the end the piece shifted .015 which cause a 1.5in DOC
[20:38:01] <Tom_itx> jesseg, sw brought it in but just arcs, open lines between them
[20:38:41] <XXCoder> Duc_main: doh
[20:39:03] <Tom_itx> jesseg, catia brought it in with lines between the arcs
[20:39:05] <Tom_itx> SW didn't
[20:39:10] <jesseg> Tom_itx, hmmmm. What's an open line? Does it look like an intake or exhaust manifold gasket?
[20:39:18] <Duc_main> XXCoder: it sucked but it was just a outside fillet radius
[20:39:32] <Tom_itx> it looks like a gasket but just shows the arcs, no lines
[20:39:45] <jesseg> Tom_itx, that's strange...!
[20:39:52] <Tom_itx> i can take a pic of eash
[20:39:54] <Tom_itx> each
[20:40:17] <jesseg> oh, thanks but if the lines didn't draw I know what that would look like :)
[20:40:19] <jesseg> Thanks for checking!
[20:40:30] <Tom_itx> but catia brought them all in
[20:40:35] <jesseg> what is catia?
[20:40:47] <Tom_itx> a $$$$$$$$$$$ cad package
[20:40:56] <Tom_itx> sw is just $$$
[20:41:05] <jesseg> maybe autocad is mad because I used LWPOLYLINE for two-point lines and it thinks I should have just used lines.
[20:41:48] <jesseg> well online DXF viewer shows my file and librecad opens it fine so who knows.
[20:42:35] <jesseg> Maybe I'll go onto a different export like GERBER or HPGL or something easy :D Thanks very much for your testing help!
[20:43:26] <CaptHindsight> where does one set the maximum limit for the Jog Speed in AXIS?
[20:44:47] <XXCoder> CaptHindsight: its dermined from maxamium speed it can go from what i understand but there is setting
[20:44:58] <XXCoder> *might be a setting sorry
[20:45:38] <Tom_itx> jesseg, http://tom-itx.no-ip.biz:81/~webpage/cnc/temp/catia_gasket.jpg
[20:45:40] <Tom_itx> http://tom-itx.no-ip.biz:81/~webpage/cnc/temp/SW_Gasket.jpg
[20:45:46] <CaptHindsight> XY are galvos so they are 100x faster than the stepper on Z
[20:47:03] <jesseg> Tom_itx, thanks! Fascinating. I hate DXF LOL. Does the file give any errors or anything?
[20:50:21] <Tom_itx> nope
[20:54:11] <jesseg> Fascinating. Thanks!
[20:55:31] <Tom_itx> are you importing it into acad or something else?
[20:55:44] <mmachines> CaptHindsight: I'm new to linuxcnc but I think it's:MAX_LINEAR_VELOCITY = 1.0 - The maximum velocity for linear jogs, in machine units per second.
[20:55:54] <mmachines> My value is 4.67
[20:56:01] <mmachines> and max jog is 280
[20:56:15] <jesseg> I'm generating DXF in my home made cad program so that the CNC plasma cutter shop can open it in his autocad and run his CNC cutter off fo it.
[20:56:47] <Tom_itx> have you tried inkscape
[20:56:58] <Tom_itx> i dunno if you can import a point cloud into it though
[20:58:44] <Tom_itx> you're using svg files?
[20:58:54] <Tom_itx> says it will use those
[20:59:02] <Tom_itx> and you can save to dxf
[20:59:10] <jesseg> not using SVG
[20:59:16] <Tom_itx> what are you using?
[20:59:42] <jesseg> oh I see I could export from my cad to SVG then convert to DXF in inkscape? That's an idea. Maybe even ogre2ogre
[20:59:48] <jesseg> What am I using for....?
[20:59:51] <Tom_itx> yeah
[21:00:15] <Tom_itx> what type of file do you start wit
[21:00:15] <Tom_itx> h
[21:00:26] <jesseg> my cad's file format? --> http://videoflier.com/files/deleteme.gwc
[21:07:14] <jesseg> but since I am writing my cad program in C/C++, I can make it export to any format that I can understand
[21:09:06] <Tom_itx> yeah i've done a few things like that
[21:09:21] <CaptHindsight> MAX_LINEAR_VELOCITY seems to limit the feed rate as well
[21:09:21] <jesseg> cool!
[21:09:46] <jesseg> Tom_itx, how do you like my file format? Does it look childish lol
[21:10:01] <jesseg> It sorta is, won't offend me if you say it is :P
[21:10:03] <Tom_itx> i didn't pay much attention to it, i'm still trying to fix my mess
[21:10:08] <jesseg> oh understandable
[21:10:15] <XXCoder> jesseg: its very readable.
[21:10:42] <XXCoder> heh I once wrote ldrdat2dxf. ldraw format is... a nightmare
[21:10:45] <Tom_itx> i'm fwriting an export file to import to quicken that puts everything in the right categories
[21:10:51] <mmachines> CaptHindsight: It looks like you can set that variable in multiple ini sections
[21:11:10] <mmachines> Did you set it in the DISPLAY section?
[21:11:23] <CaptHindsight> mmachines: yes
[21:11:40] <Tom_itx> CaptHindsight, you can look at my configs if you want. i'm pretty sure i set it in there somewhere
[21:12:04] <CaptHindsight> Tom_itx: sure
[21:12:07] <Tom_itx> http://tom-itx.no-ip.biz:81/~webpage/cnc/configs/sherline/
[21:12:10] <XXCoder> Tom_itx: cat *.ini | grep (variable name)
[21:12:35] <Tom_itx> XXCoder what are you talking about?
[21:12:44] <XXCoder> how to find it. :)
[21:13:03] <XXCoder> I forgot how to make it display option of which file it found it in
[21:13:18] <Tom_itx> i usually grep -flp
[21:13:28] <CaptHindsight> Tom_itx: if you change the MAX_LINEAR_VELOCITY it changes the Max Velocity and the Jog speed
[21:13:33] <Tom_itx> i don't even remember what those options are
[21:13:59] <Tom_itx> CaptHindsight, what are you trying to change? i haven't been keeping up here
[21:14:57] <XXCoder> f = fixed string, l = files with matches, p = apparently regexp
[21:15:07] <jesseg> Wow, RS274X supports the including of aperture sizes now? That's cool.
[21:15:09] <CaptHindsight> Tom_itx: I want Max Velocity in AXIS to stay at 500,000mm/min but have the jog speed to below 1000mm/min
[21:15:53] <XXCoder> why?
[21:16:27] <CaptHindsight> it seems that AXIS somehow takes the setting for Max Velocity and comes up with some Max for Jog Speed
[21:16:29] <Tom_itx> i'm not sure that's possible
[21:16:42] <CaptHindsight> heh, what I'd like :)
[21:16:56] <Tom_itx> but if it is, set the max velocity in the axis then set the other max in the display section
[21:17:39] <Tom_itx> steppers?
[21:17:56] <CaptHindsight> yeah, I might have to limit jogging for the Z axis by setting its Max Velicity in the AXIS section
[21:18:03] <Tom_itx> also set stepgen_maxaccel a % higher than max_acceleration
[21:18:14] <CaptHindsight> XY are galvos, Z is a stepper
[21:18:54] <CaptHindsight> so the galvos move 100=1000x faster than the Z axis stepper
[21:19:39] <CaptHindsight> things the devs probably were not thinking about when they wrote Linuxcnc
[21:20:06] <Tom_itx> probably not but with that said, you can mix servos and steppers and those 2 would need different rates
[21:20:19] <Tom_itx> so there must be a way
[21:20:37] <CaptHindsight> maybe tomorrow when the devs are around
[21:20:47] <Tom_itx> that's what i'd do :)
[21:21:21] <CaptHindsight> Cradek Cradek don't be away, Cradek Cradek save the day!
[21:21:46] <CaptHindsight> what we would chant when we were children
[21:26:55] <CaptHindsight> Tom_itx: the usual mix of steppers and servos are usually around the same feed and jog rates
[21:27:25] <CaptHindsight> in my instance they are 1000x different
[21:27:50] <XXCoder> makes sense. one machine at work have bad Z setup, its X and Y is ok on jog speed, but its Z is very slow, its counterweight would bounce otherwise
[21:27:54] <XXCoder> making Z position unknown
[21:28:03] <Tom_itx> that _shouldn't_ matter in theory. just the fact you can set them up differently says the vars are independent
[21:28:08] <CaptHindsight> feed rates for the galvos are 500,000mm/min, and the rate for the Z is 500mm/min
[21:28:36] <Kevin`> is it possible to adjust speed and accelleration while linuxcnc is running? pncconf's tester doesn't work so a single cycle of testing takes a long time
[21:28:41] <Tom_itx> where they all come together is in the display section where those sliders control all the rates
[21:28:46] <CaptHindsight> have to write a manual about this when I'm done
[21:28:57] <Tom_itx> you better be taking good notes
[21:29:02] <CaptHindsight> yup
[21:29:13] <Tom_itx> i did that when i did my first bitfiles
[21:29:21] <Tom_itx> now it's in the wiki
[21:29:23] <CaptHindsight> I rarely get an easy setup with Linuxcnc
[21:30:15] <CaptHindsight> I thought that this setup was all worked out before
[21:31:28] <CaptHindsight> https://www.youtube.com/watch?v=gK14SaaYMoc CNC laser galvo scanner head test but no configs posted
[21:37:14] <Tom_itx> is that yours?
[21:37:22] <Kevin`> also, can I have both constant speed and position control on an A axis?
[21:37:36] <Kevin`> re-homing would be fine if they confuse each other
[21:41:12] <CaptHindsight> Tom_itx: no
[21:43:27] <CaptHindsight> the MAX_VELOCITY setting in the AXIS section of ,ini does override the Jog Speed slider in Axis GUI
[21:45:30] <Tom_itx> does that help?
[21:45:39] * Tom_itx thinks it should
[21:45:53] <CaptHindsight> might have to live with it
[21:46:17] <CaptHindsight> I'd rather have the Slider have a lower limit
[21:46:29] <Tom_itx> or edit axis and add individual jog speed sliders
[21:46:43] <CaptHindsight> I'd like that
[21:46:47] <CaptHindsight> have an example
[21:46:51] <Tom_itx> no
[21:47:00] <CaptHindsight> more digging
[21:47:04] <Tom_itx> it should be in the axis code though
[21:47:31] <Tom_itx> you'd have to separate the signals from the original jog slider
[21:47:51] <Tom_itx> or just separate the ones you wanted to
[21:49:13] <CaptHindsight> https://forum.linuxcnc.org/forum/22-pyvcp/28788-2-independent-jog-speed-controls-one-for-a-axis
[21:50:32] <Tom_itx> looks like half your job is done
[21:57:17] <CaptHindsight> https://forum.linuxcnc.org/forum/21-axis/15386-how-do-i-add-a-2nd-jog-speed-slider-and-home-all
[21:58:57] <Tom_itx> i've got home buttons
[21:59:54] <Tom_itx> you should be careful with a 'Home All' button though
[22:00:11] <CaptHindsight> when you add a rotary axis then a second jog slider pops up
[22:00:12] <Tom_itx> as Z might not be out of the way for X & Y before the tool snaps
[22:00:54] <CaptHindsight> in thought that what that was for
[22:00:56] <Tom_itx> but you want linear don't you?
[22:01:06] <CaptHindsight> stress testing your end mills
[22:01:22] <Tom_itx> unless you fix it in your subroutine that gets called
[22:01:36] <CaptHindsight> yeah two linear but it might provide me with example code
[22:03:01] <Tom_itx> huh, i don't have those backed up
[22:03:29] <CaptHindsight> well what I really need is for the Jog slider to just apply to the Z axis
[22:03:41] <CaptHindsight> the speed of the Z
[22:04:09] <CaptHindsight> i doubt that I'll be jogging the laser around
[22:04:18] <Tom_itx> heh
[22:04:53] <XXCoder> etch-a-sketch laser
[22:05:37] <CaptHindsight> how to manually burn your.... eh steer your laser
[22:47:26] <pcw_home> Kevin`: yes you can change velocity and acceleration limits when linuxcnc is running (but not when running gcode)
[22:49:57] <pcw_home> take a look at the "ini" pins