#linuxcnc | Logs for 2014-11-28

[00:02:59] <taiden> well i just tried it at 100 in/s/s and it's actually not much better believe it or not
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[00:11:16] <taiden> just used g64 p0.002 and it's going almost twice the speed
[00:14:15] <taiden> g64 p0.005 even faster still, 400 ipm in sections
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[00:26:15] <taiden> g64 p0.010 and 100 i/s/s allowed me to contour a 4" x 6" surface with 0.050" stepover in about 58 seconds
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[00:39:19] <Tom_itx> how's the accuracy?
[00:40:10] <Tom_itx> this must be a router or such
[00:40:25] <Tom_itx> i didn't catch what machine you had
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[00:59:46] <taiden> it's a custom built router
[01:00:36] <taiden> https://www.facebook.com/video.php?v=10203035962239609
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[01:01:11] <taiden> i built it for surface contouring
[01:01:23] <taiden> low DOC low stepover fast contouring
[01:01:24] <PetefromTn_> video no worky
[01:01:28] <_methods> linkie no workie
[01:01:33] <taiden> sorry one second
[01:01:48] <_methods> cuttin foam?
[01:02:26] <taiden> https://dl.dropboxusercontent.com/u/23865811/Video/IMG_1702.MOV
[01:02:30] <taiden> hardwoods
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[01:02:50] <_methods> ah nice
[01:03:29] <taiden> i'll probably adjust the belt ratio to allow 500 ipm rapids though
[01:03:41] <taiden> that video is at 900 ipm
[01:04:18] <_methods> pbc linears?
[01:04:56] <_methods> nice build
[01:08:43] <PetefromTn_> interesting
[01:08:47] <PetefromTn_> is that a weldment?
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[01:10:07] <PetefromTn_> what sort of table are you planning for it and how will it be affixed to the lower movement
[01:11:04] * _methods was kinda wondering the same
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[01:19:26] <Tom_itx> can't view either one on this pc :(
[01:20:02] * Tom_itx visualizes a nice custom built router
[01:20:15] <_methods> what format you need?
[01:20:36] <Tom_itx> i dunno, youtube works on it
[01:20:44] <_methods> mp4
[01:20:49] <PetefromTn_> It opened fine with my KMpplayer
[01:20:52] <pfred1> IMG_1702.MOV worked here
[01:20:53] <Tom_itx> it's a rather slow irc only pc
[01:21:06] <Tom_itx> yeah i don't have alot of stuff installed on it
[01:21:22] <pfred1> aptitude install mplayer
[01:21:25] <Tom_itx> but it does irc rather well
[01:22:02] <pfred1> mplayer will work with like an original Pentium P200
[01:22:11] <_methods> converting now
[01:22:50] <_methods> https://www.dropbox.com/s/p7b072tjupzywl9/IMG_1702.mp4?dl=0
[01:23:00] <_methods> mp4 for ya heheh
[01:23:30] <Tom_itx> http://tom-itx.no-ip.biz:81/~webpage/itx/itx2.JPG
[01:23:43] <Tom_itx> been running 12/7 for several years now
[01:24:38] <Tom_itx> thanks
[01:24:54] <_methods> np
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[02:00:22] <PetefromTn_> I ate too much
[02:00:33] <PetefromTn_> :D
[02:03:56] <taiden> NSK linear actuators
[02:04:02] <taiden> and yes a steel welded frame
[02:04:23] <PetefromTn_> it looks pretty nice man
[02:04:38] <PetefromTn_> got any closer pictures of it so we can see how it is constructed?
[02:05:10] <taiden> i appreciate it. i have some renders
[02:05:50] <PetefromTn_> envelope?
[02:05:57] <taiden> 15x15x9
[02:06:09] <taiden> z is too long, had to do with parts availability
[02:06:34] <taiden> https://dl.dropboxusercontent.com/u/23865811/Photos/solidedge13.JPG
[02:06:35] <PetefromTn_> if you ask me your Z can never be too long heh
[02:06:57] <taiden> I hear you, I'm not crying over it :)
[02:07:17] <taiden> I have 6" under the gantry so this allows quite a bit of options for the future including a large 4th axis
[02:07:19] <PetefromTn_> is there any outside edge support planned for the table?
[02:07:34] <taiden> I do not understand your question
[02:07:41] <taiden> oh
[02:07:44] <taiden> I understand now
[02:07:46] <taiden> no, there is not
[02:07:56] <taiden> I will consider it if it proves to be an issue
[02:08:09] <taiden> table is 0.500" mic 6 with 3/4" MDF over it
[02:08:19] <PetefromTn_> honestly I like the design it is simple and stout but I would have made the table use two guideways one on each side
[02:08:26] * LeelooMinai steals the table from taiden and runs off
[02:08:32] <taiden> Yes, everyone who has seen it has said that
[02:08:37] <taiden> :)
[02:09:01] <taiden> the effective linear guide width on the MCM08 is about 80mm
[02:09:38] <taiden> it seems to do a lot for handling moments
[02:10:08] <taiden> and moments on a moving table Y are very low
[02:10:16] <taiden> moment arm is about 3"
[02:10:41] <taiden> so with a 50 lb cutting force the moment on the linear actuator is about 12 ft-lbs
[02:11:08] <taiden> rotational deflection on these components in the 20 ft-lb range is sub 0.001"
[02:11:17] <PetefromTn_> this is for wood and plastic cutting or what?
[02:11:22] <taiden> yes, wood and plastic
[02:11:26] <taiden> mostly hardwoods
[02:11:38] <PetefromTn_> interesting
[02:11:57] <PetefromTn_> did you weld up the frame
[02:12:00] <taiden> I did
[02:12:05] <PetefromTn_> tig?
[02:12:09] <taiden> I was surprised at how little it moved during welding
[02:12:19] <taiden> 120v mig welder
[02:12:29] <taiden> i used the linear actuators as my clamps
[02:12:31] <taiden> nothing else
[02:12:41] <taiden> ended up having to shim one axis 0.007" and that was it
[02:13:33] <PetefromTn_> when you shim the axis what do you do with the gap from one end to the other fill it with epoxy or something?
[02:13:41] <taiden> i use shim sock
[02:13:47] <PetefromTn_> or rather how did you shim it
[02:13:52] <taiden> stock
[02:13:54] <PetefromTn_> tapered shim stock
[02:13:56] <PetefromTn_> ?
[02:13:58] <taiden> nope
[02:14:05] <taiden> you can buy a nice pack of it from amazon for about 420
[02:14:07] <taiden> $20
[02:14:24] <taiden> comes in 1 thou, 2, 3, 4, 5, 6, 7, 10, and 15 i think
[02:14:55] <taiden> you can cut it with scissors
[02:15:14] <taiden> i have four bolts holding the actuators to the frame
[02:15:24] <taiden> i tighten down three and use a feeler gauge to find the gap
[02:16:03] <PetefromTn_> ok
[02:16:24] <taiden> then i just shim it with the aforementioned shim stock
[02:16:31] <taiden> my only complaint with the steel frame is it rings like a bell
[02:16:33] <taiden> it's very loud
[02:17:08] <PetefromTn_> maybe you can drill some holes and squirt in some epoxy or something to deaden it.
[02:17:11] <LeelooMinai> taiden: You have big spaces in there - fill them with something - epoxy granite for example:)
[02:17:33] <pfred1> duck tape
[02:17:40] <LeelooMinai> Presumably it has 30 times more dampening than steel
[02:18:06] <taiden> that would be awesome
[02:18:27] <taiden> it's already very heavy
[02:18:32] <taiden> about 140 pounds
[02:18:32] <LeelooMinai> I put in my aluminum beams sand - not sure if it will make a lot of difference, but it's there in side
[02:18:45] <taiden> I bet sand would work very well
[02:18:51] <taiden> I considered rice
[02:19:29] <taiden> I have found that the steppers will stall with about a 50 lb linear force
[02:19:49] <taiden> i feel that this is acceptable for cutting hardwoods
[02:20:10] <taiden> with the Hitachi m12vc router
[02:20:12] <PetefromTn_> what kind of projects are you planning to make with the hardwoods
[02:20:28] <taiden> I make audio products
[02:20:36] <taiden> headphone parts
[02:21:03] <taiden> my last build rapided at about 240 ipm and was very floppy
[02:21:15] <PetefromTn_> what kind of headphone parts
[02:21:27] <taiden> i wanted to do complex surfaces and it was too long to be profitable with the old machine
[02:21:34] <taiden> that is why i went nuts and designed for 900ipm
[02:21:52] <taiden> too long meaning it would take too long to cut
[02:22:32] <jdh> pics of hardwood headphones?
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[02:25:30] <PetefromTn_> that welded steel boxed frame is a welcomed change from the flimsy POS made from duct tape and bailing wire CNC routers we have been seeing around lately LOL
[02:25:46] <jdh> snob
[02:25:50] <taiden> things like stands
[02:25:51] <taiden> people seem to like really nice wood products
[02:25:51] <taiden> i figure it's because we live in a world of plastic
[02:26:03] <taiden> my oldone was made from duct tape and bailing wire :)
[02:27:09] <taiden> https://fbcdn-sphotos-d-a.akamaihd.net/hphotos-ak-xfa1/v/t1.0-9/269293_3328632894265_1951333701_n.jpg?oh=b3109f9dac477bae3ef00529f3030e60&oe=551E4055&__gda__=1427826844_06a9742dcc47510b4364157a8cffb77d
[02:28:04] <PetefromTn_> that looks like a decent machine too actually
[02:29:09] <taiden> if lookahead was improved it would probably reduce machining time for surfaces for me by about 50%
[02:29:27] <taiden> i'd like to learn more about the new trajectory planner that was mentioned earlier
[02:30:16] <PetefromTn_> I need to start playing with 3d stuff a lot more not really done much of it yet. It is the reason I started down this road a long time ago
[02:31:05] <taiden> i like to carve sometimes
[02:31:06] <pfred1> get a 3D printer
[02:31:27] <taiden> you get some awesome forms from wood carving
[02:31:29] <PetefromTn_> no I want to learn to program my VMC for 3d parts a lot more than I have been
[02:32:03] <taiden> i want to be able to replicate these features on my cnc router, but have it take about as long as a traditional 2.5d toolpath would
[02:32:18] <PetefromTn_> what kind of hardwood parts have you machined on your routers
[02:32:20] <taiden> surface finishing took so long on my old machine
[02:32:36] <taiden> mostly those headphone parts
[02:32:46] <PetefromTn_> what headphone parts?
[02:32:49] <taiden> they are usually round, not that complex
[02:33:12] <taiden> but i actually wanted to do surface machining for stuff with ergonomic handles
[02:33:22] <taiden> target pistol grips are a great example
[02:33:32] <jdh> how do you generate toolpaths
[02:33:45] <pfred1> I think a lot of stuff like that is finished with sanders
[02:33:48] <taiden> http://www.eeaston.com/wp-content/uploads/2010/06/SigTrailside-PlasticGrip-Right.jpg
[02:33:54] <taiden> yes it is
[02:34:08] <PetefromTn_> did you make that?
[02:34:11] <taiden> I did not
[02:34:16] <jdh> I'd like to make some 45 grips
[02:34:19] <taiden> but if you can get it to a 0.003" scollop height your sanding time is very quick
[02:34:38] <pfred1> I knew a guy who knew the guy that made the plastoc for Colt
[02:34:40] <pcw_home> taiden: if you are doing high speed profiling you would benefit from the new TP
[02:34:57] <pfred1> you know the plastic with the swirl patterns in it?
[02:34:59] <taiden> that is what i am excited for
[02:35:07] <taiden> pcw_home: do you know where i can find more information on it?
[02:35:30] <pfred1> he had a whole sheet of it
[02:35:32] <pcw_home> you just download 2.7 or master, its included in both
[02:35:38] <pfred1> like 4x8
[02:35:43] <taiden> is it already released and stable?
[02:36:17] <pcw_home> its pre release but lots of people are using it
[02:36:39] <taiden> can i grab it from a repository?
[02:36:46] <taiden> i'm not very savvy
[02:37:13] <pfred1> I've built pre-releases of Linuxcnc it's not hard
[02:37:16] <pcw_home> yes, you can get it from the buildbot or build it from source
[02:37:41] <taiden> how close is it to release?
[02:37:52] <taiden> i'm not sure if pre-release is like an alpha version or just about to be deployed
[02:37:55] <pcw_home> I think 2.7 is relatively close to release
[02:38:22] <pcw_home> (master is 2.8.0-pre or some such)
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[02:38:26] <pfred1> building an RTAI kernel can be tough sometimes though
[02:38:36] <pcw_home> no need
[02:38:54] <pfred1> if you're setting up a whole custom system you kind of need it
[02:39:05] <pcw_home> debian iso has both RTAI and preemt-rt kernel available
[02:39:12] <taiden> where can i find a guide on installing it? i have a fresh install of 2.6 live USB
[02:39:49] <pcw_home> The wiki instructions for installing from source work OK
[02:39:50] <pfred1> I've done a Debian build on my own and almost got Gentoo to work
[02:40:18] <pfred1> I'd have gotten gentoo to work but building the kernel there was one parameter I didn't have right
[02:40:24] <pcw_home> if you like to play, fine... If you want to run a machine download the ISO
[02:40:24] <taiden> what about buildbot? is that recommended?
[02:40:50] <pcw_home> if you dont want to build from source, its an option
[02:40:52] <taiden> I need this to be as reliable as possible, this will be a machine deployed in a business
[02:40:58] <pfred1> if you don't like to play then don't run Linux
[02:41:18] <taiden> pfred1: I don't agree, a plain install of LinuxCNC has worked very well for me for a few years
[02:41:24] <pcw_home> i run linux so i dont have to play
[02:41:24] <taiden> I prefer it much more than WinCNC and Mach3
[02:41:25] <pfred1> go run fucking Windows
[02:41:52] <taiden> I'd just like this new TP :)
[02:41:53] <LeelooMinai> What would be involved for using linuxcnc with mesa hardware to program the whole setup to read position from a digitall sensor/caliper-like device (I think it's 1.8V based) move the probe in XY, read it again, etc. and store all the results in the file? That is map some surface.
[02:42:46] <pcw_home> probably possible but those scales are notoriously inaccurate
[02:43:13] <LeelooMinai> In this case it's a digital indicator
[02:43:16] <pcw_home> probably better to just use a switch based probe
[02:43:25] <LeelooMinai> Supposedly accurate to 0.001mm
[02:43:56] <LeelooMinai> I already looked at the signal from it on oscilloscope - seems 1.8V based simple stream
[02:43:58] <pcw_home> Ha Ha
[02:44:19] <pfred1> taiden well it was people playing that made Linux possible
[02:44:49] <taiden> yep! and I am grateful for that
[02:44:53] <LeelooMinai> I am just not sure how to go about it - if I would need to modify fpga bistream or I can just capture some inputs and do it inside lunuxcnc, using some plugin or what
[02:45:12] <zeeshan|2> LeelooMinai: hi
[02:45:17] <zeeshan|2> is it a 1.8V square wave?
[02:45:23] <taiden> i'd love to play with it in the future, but for a tool that I use to provide for myself, playing is sometimes not the best option
[02:45:32] <LeelooMinai> It's a digital signal of course, yes
[02:45:37] <LeelooMinai> Just clock + data
[02:45:44] <pcw_home> I renishaw type knockoff probe wii be more accurate ans probably faster
[02:45:46] <zeeshan|2> like if your caliper is reading 1.000"
[02:45:47] <zeeshan|2> what outputs?
[02:46:01] <zeeshan|2> and 2.000"
[02:47:03] <LeelooMinai> Well, they advertise it with 0.001 resolution and 0.004mm accuracy
[02:47:13] <LeelooMinai> Not sure if that is true, but maybe? :)
[02:47:24] <LeelooMinai> It's one like this: http://www.aliexpress.com/item/Good-Quality-High-Accuracy-Electronic-Digital-Micron-Indicator-0-001mm-5310-10/963668366.html
[02:47:36] <zeeshan|2> no no
[02:47:40] <pcw_home> the protocol is known but it reads continuously at a slow repeat rate, to a touch probe is better
[02:47:43] <zeeshan|2> im wondering what the output is at 1.000"
[02:47:45] <zeeshan|2> and 2.000"
[02:47:48] <zeeshan|2> like how the output changes
[02:48:04] <LeelooMinai> zeeshan|2: What does it matter?
[02:48:25] <zeeshan|2> to know how to program it.
[02:48:26] <pcw_home> its just a binary (or BCD) position count
[02:48:31] <LeelooMinai> pcw_home: What is that touch probe you talk about? Some $1k device? :)
[02:48:32] <zeeshan|2> oh
[02:48:34] <zeeshan|2> thats easy then!
[02:48:39] <zeeshan|2> each position = 0.001"?
[02:49:04] <LeelooMinai> I am not worrying about decoding it - just how to connect it to hardware and get at it from linuxcnc
[02:49:23] <zeeshan|2> i think the 7i77 needs 4.5V to register a change of state
[02:49:30] <pcw_home> there are decent home made Renishaw type knockoffs
[02:49:42] <LeelooMinai> I can put level decoder between them - that's also not a problem
[02:49:54] <zeeshan|2> so then just connect it to your input?
[02:49:59] <zeeshan|2> your output from it is slow enough
[02:50:17] <LeelooMinai> Yes, and then what?
[02:50:27] <zeeshan|2> then write some code
[02:50:29] <zeeshan|2> to do what you want to do :P
[02:50:31] <zeeshan|2> you're the programmer!
[02:50:51] <LeelooMinai> Right, but do I deal with hal, some linuxcnc plugins, I don't know
[02:51:02] <zeeshan|2> you deal with a hal component
[02:51:11] <zeeshan|2> which you can write in c
[02:51:19] <zeeshan|2> correct me if im wrong
[02:51:29] <zeeshan|2> but you're basically wanting to command stepper to move 0.001"
[02:51:32] <pcw_home> I think the issue I noticed with those cheap scales is the battery+ is ground
[02:51:34] <zeeshan|2> and then you want to compare that with your input from your scale
[02:51:35] <zeeshan|2> right?
[02:51:42] <LeelooMinai> Are there some components like this for any kind of probes done already?
[02:51:43] <zeeshan|2> to see if you're good
[02:52:16] <pcw_home> so the output swing negative relative to case ground
[02:53:02] <LeelooMinai> I am looking at those renishaw probes - how are they different from an indicator?
[02:53:27] <pcw_home> they are just a switch (a very accurate switch)
[02:53:41] <LeelooMinai> Switch for measuring distance?
[02:53:48] <LeelooMinai> What would that be? :)
[02:54:09] <zeeshan|2> pcw_home: she's trying to map her table
[02:54:10] <zeeshan|2> error
[02:54:10] <LeelooMinai> I want to measure XY table distance from Z axis
[02:54:22] <pcw_home> they switch when the probe is touched
[02:54:34] <LeelooMinai> A, so that's not really what I am looking for
[02:54:54] <zeeshan|2> LeelooMinai: are you just trying to map the error?
[02:55:05] <zeeshan|2> i think your component will be really easy.
[02:55:22] <zeeshan|2> it needs to know what your x and y limits are
[02:55:26] <pcw_home> http://www.vinland.com/touch-probe.html
[02:55:36] <LeelooMinai> I want to see if the table is flat basically in respect to the z-axis
[02:55:37] <zeeshan|2> and then you have a loop that moves the table 0.001" in x for example
[02:55:51] <zeeshan|2> and you record the scale position in an array and then save it into a text file.
[02:56:06] <pcw_home> theres already code for doing this (with a probe)
[02:56:22] <zeeshan|2> oh youre trying to measure flatness
[02:56:22] <zeeshan|2> lol
[02:56:36] <LeelooMinai> That's kind of reverse of what I want to do:)
[02:57:08] <LeelooMinai> I want to use readings from digital probe all over the table to align axis, check the table is flat, etc.
[02:57:11] <zeeshan|2> pcw_home: are you a programmer?
[02:57:18] <LeelooMinai> I cannot really use touch probe for that...
[02:57:32] <zeeshan|2> why not
[02:57:39] <LeelooMinai> zeeshan|2: I think he makes and programs mesa cards, etc. so yes? :)
[02:57:41] <zeeshan|2> you can if your positioning in the X axis is accurate
[02:57:57] <pcw_home> well a low level programmer (nothing above assembler if I can help it)
[02:58:02] <taiden> wait
[02:58:05] <zeeshan|2> okay you're hardcore then :P
[02:58:11] <taiden> is there already a supported method for touch probe scanning with linuxcnc?
[02:58:35] <pcw_home> This is exactly what a touch probe is for
[02:58:53] <taiden> yes, I just never looked into it for linuxcnc
[02:58:59] <LeelooMinai> Hmm, I guess if I assume that the rails are straight...
[02:59:18] <LeelooMinai> I could use touch probe to align things too
[02:59:44] <LeelooMinai> It seems to be pretty simple too - just something that will short to the bed
[02:59:55] <LeelooMinai> Unless it's make from epoxy granite like mine may be:p
[03:00:08] <LeelooMinai> made*
[03:00:18] <LeelooMinai> Then what...
[03:00:22] <zeeshan|2> LeelooMinai: if youre just trying to measure flatness
[03:00:29] <zeeshan|2> i dont understand why you cant drag the probe across the table
[03:00:33] <zeeshan|2> and just record the values?
[03:00:43] <zeeshan|2> so for each x y position you have Z value
[03:00:43] <LeelooMinai> zeeshan|2: With hand? :)
[03:00:56] <zeeshan|2> then output that as a 3d plot
[03:00:58] <zeeshan|2> in a math software
[03:01:08] <LeelooMinai> Yes, but doing say 400 measurements like that would be much nicer if automated
[03:01:14] <zeeshan|2> yea its just two for loops?
[03:01:32] <PetefromTn_> usually you would surface the table using the machine to try to get it flat to the spindle
[03:01:47] <PetefromTn_> at least on a table top router anyway
[03:02:14] <zeeshan|2> for x x_min_limit:.001:x_max_limit { for y y_min_limit:.001:y_max limit { move probe to x,y , record value of digital indiccator in an array } }
[03:02:18] <pcw_home> assuming the rails are not skewed...
[03:02:29] <zeeshan|2> and then write the array to a text file?
[03:02:29] <LeelooMinai> But the spindle won't get to every part of the table - the working area is smaller
[03:02:56] <zeeshan|2> okay so map the working area first using that method
[03:03:08] <zeeshan|2> and then stick the probe out
[03:03:12] <zeeshan|2> and do the outside areas
[03:03:13] <LeelooMinai> zeeshan|2: I know that that part is easy - but first I need to get that data into the component code
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[03:04:33] <LeelooMinai> So it seems I need to read docs on writing those components and not mess with mesa firmware, right?
[03:04:33] <os1r1s> zeeshan|2: Probing that way is called the "bed of nails" approach.
[03:04:43] <os1r1s> zeeshan|2: Works great for 3d, but sucks for 2D
[03:04:55] <zeeshan|2> shes wanting a 3d profile..
[03:05:12] <zeeshan|2> LeelooMinai: why would you mess with mesa??!
[03:06:01] <LeelooMinai> NOt sure if I will get the data intact from mesa
[03:06:12] <os1r1s> zeeshan|2: You can use the output as a point cloud. Run it through meshlab to turn it into an STL
[03:06:53] <LeelooMinai> It's not super-fast protocol, but not sure if I read it directly if I will get all the data stream (?)
[03:07:12] <zeeshan|2> try
[03:07:18] <zeeshan|2> =D
[03:07:25] <zeeshan|2> worst comes to worst you can use rs232
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[03:09:05] <LeelooMinai> Or write it on paper and enter using keyboard
[03:09:13] <zeeshan|2> :D
[03:09:50] <zeeshan|2> os1r1s: got a link for this point could method
[03:12:14] <pcw_home> probing is already supported in linuxcnc. not sure why you would want to make this more complicated
[03:13:08] <LeelooMinai> Because it relies on the axis position and does not really read any values from digital probe
[03:13:22] <os1r1s> zeeshan|2: https://www.youtube.com/watch?v=gDFRUPK-eIc
[03:13:37] <os1r1s> zeeshan|2: Best link I could find in a minute
[03:13:39] <Tom_itx> pcw_home on that common block it's split so you can use GND and +5v on the same rail?
[03:14:21] <zeeshan|2> thats cool :C
[03:15:15] <os1r1s> zeeshan|2: Follow the pictures. Its actually really easy
[03:16:44] <pcw_home> Tom_itx: yes its split in half
[03:18:21] <zeeshan|2> is there a quick way to clone a hd in linux
[03:18:30] <zeeshan|2> and then replace the hd with that cloned hd
[03:18:31] <pcw_home> dd
[03:18:32] <zeeshan|2> and have it all work
[03:18:52] <Tom_itx> i've used ghost
[03:18:59] <Tom_itx> but on a win box
[03:19:15] <zeeshan|2> i want to use the same comp to make a copy of its drive
[03:19:32] <zeeshan|2> im doing from an ide old school drive to a sata solid state
[03:19:36] <zeeshan|2> i dont wanna re-install everything
[03:19:41] <Tom_itx> i've done that
[03:19:41] <zeeshan|2> doing = going
[03:19:48] <zeeshan|2> okay howd you do it? :)
[03:19:48] <Tom_itx> but not on the host pc
[03:19:51] <zeeshan|2> aw
[03:19:57] <Tom_itx> i pulled them and used ghost
[03:20:18] <Tom_itx> i'm sure linux has a way but i'm not familiar with it
[03:20:27] <Tom_itx> ^^ suggested 'dd'
[03:20:42] <pfred1> tar
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[03:21:11] <zeeshan|2> Tom_itx: did it copy the master boot record too?
[03:21:16] <Tom_itx> i recently went from a 300g to 500g with ghost with no problems
[03:21:24] <Tom_itx> it copies it all
[03:21:25] <zeeshan|2> or did you have to fix it
[03:21:26] <zeeshan|2> ok
[03:21:32] <zeeshan|2> im gonna try this thing called "clonezilla
[03:21:35] <Tom_itx> i've done windows and linux both this way
[03:21:45] <pfred1> the classic solution is to use tar
[03:22:52] <pfred1> http://www.thinkwiki.org/wiki/How_to_copy_a_Linux_installation
[03:23:50] <pfred1> dd will copy errors
[03:23:55] <Tom_itx> pcw_home what's the difference between the din rail kits (2pcs) vs (3pcs)
[03:24:00] <Tom_itx> the pics are the same for both
[03:24:13] <pcw_home> 2 vs 3 clips
[03:24:21] <Tom_itx> does it include any rail?
[03:24:27] <Tom_itx> or do you have rail
[03:25:10] <LeelooMinai> I think you need to have some rail for it already
[03:25:30] <Tom_itx> i have a little but i don't think it's enough
[03:25:31] <pcw_home> you need th DIN rail
[03:25:36] <Tom_itx> ok
[03:28:07] <Connor> I used 4 clips on the 7i76, 1 for each pair of holes.. wanted it supported at each stress point.
[03:28:26] <Tom_itx> where did you get your rail?
[03:28:33] <Connor> McMaster.
[03:28:50] <Connor> http://www.mcmaster.com/#din-rails/=us9eip
[03:28:56] <LeelooMinai> I just attached 7i76 to aluminum base with PC standoffs
[03:29:21] <Connor> I got 8961K15
[03:29:54] <Connor> probably should have gotten 8961K45 -- the one without holes.. one with holes ended up being a pain because they were so dang large.
[03:30:13] <Connor> http://www.ivdc.com/cnc/mill_11_21_14_02.jpg
[03:30:23] <pcw_home> dd only works for 1-1 copies but is simpler in that case (physical copy so no messing with boot stuff partitions etc)
[03:30:25] <Connor> You can see the size of them on the DIN rail in the upper right hand area
[03:31:04] <Connor> I did DD from 1GB to a 2GB drive.. and the resized it.. don't remember how..
[03:31:06] <zeeshan|2> pcw_home: so basically i do dd if=/dev/sda of=/dev/sdb bs=4096 ?
[03:31:31] <pcw_home> if they are different drives I would use tar
[03:31:35] <pfred1> you maintain the same file fragmentation with dd
[03:31:35] <zeeshan|2> oh damn
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[03:32:00] <pcw_home> fragmentation is a windows thing
[03:32:07] <PetefromTn_> http://i.imgur.com/1yk4el8.jpg :)
[03:32:13] <pfred1> you think Linux filesystems don't fragment?
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[03:32:23] <pfred1> OK
[03:32:43] <Connor> PetefromTn_: Yup. solid rail.. no slots in it..
[03:33:00] <PetefromTn_> works a treat
[03:33:25] <Connor> I need a bracket that has a db25 and db9 holes in it...
[03:33:33] <Connor> standard pc bracket.
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[03:34:01] <Connor> I use to have access to tons of that stuff when I worked at the ISP / Computer Store.
[03:34:04] <Connor> not so much now.
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[03:38:20] <pfred1> Connor if you really look at db cut outs they're just ovals with slots on the ends
[03:38:50] <pfred1> i know this because recently I had to cut a db 25 out here
[03:39:02] <skunkworks> Connor: how is the 5i25 going?
[03:39:40] <Connor> I know.. machine it parts right now.. no way to make one.
[03:39:48] <Connor> skunkworks: got the z moving last night
[03:40:21] <pfred1> I used a unibit amd a body saw
[03:42:06] <pcw_home> some DXXX cutouts are trapezoidal (the oval ones are common on PC brackets)
[03:42:08] <pfred1> before I really looked at one I thought the cut outs had the angle like the jacks have
[03:42:31] <Connor> I probably have one in a box somewhere.. it's just a matter of finding it.
[03:42:34] <pfred1> yeah I took my cues from a PC bracket I had laying around
[03:43:09] <pfred1> I think the knock out for cutting them has the angle?
[03:43:42] <pcw_home> Yes the Greenlee punch has an angle
[03:43:47] <pfred1> those knock out dies are pretty expensive though
[03:44:24] <pfred1> you really need to be punching a lot of those holes to justify that cost
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[03:45:16] <pfred1> in any event an oval with slots seems to work just fine to me
[03:45:36] <pcw_home> Connor: aren't there parallel +serial cards that have that bracket hole combo?
[03:45:56] <pfred1> I think i have a few of the brackets like that here
[03:46:00] <Connor> pcw_home: Yup. I can buy them.. I was just hoping I had one already.
[03:46:30] <pfred1> but I needed the hole in a piece of sheet metal
[03:46:56] <Connor> http://www.amazon.com/Pc-Accessories-Mounting-Bracket-L-Bracket-10-PACK/dp/B00CBAK83Q
[03:47:06] <pfred1> lifetime supply
[03:47:07] <Connor> $5.60 + $7.87 shipping OUCH
[03:47:22] <pfred1> yeah but you'll never need to buy another one
[03:49:03] <LeelooMinai> Or... http://www.aliexpress.com/item/Motherboard-RS232-DB9-Pin-Com-Port-Ribbon-Serial-Cable-Connector-Bracket-ES88/1791400129.html
[03:49:34] <Connor> LeelooMinai: Need on that has both db25 and db9.. only 1 slot
[03:49:59] <skunkworks> I probably have a ton at work.. I could send you a few but not until next week..
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[03:50:02] <zeeshan|2> PetefromTn_: damn your blurry pics!! :P
[03:50:03] <LeelooMinai> http://www.aliexpress.com/item/NI5L-PCI-Slot-Header-Serial-DB9-Pin-COM-with-Parallel-DB25-Pin-LPT-Cable-Bracket/1243471032.html
[03:50:26] <zeeshan|2> wow
[03:50:28] <PetefromTn_> ?
[03:50:28] <zeeshan|2> a buck for that
[03:50:39] <zeeshan|2> PetefromTn_: of the 7i77 :P
[03:50:50] <PetefromTn_> maybe your vision is just shitty
[03:50:57] <Connor> skunkworks: That would be fine. Not in a super hurry for it.
[03:51:00] <PetefromTn_> looks fine to me :D
[03:51:00] <zeeshan|2> http://i.imgur.com/1yk4el8.jpg
[03:51:03] <zeeshan|2> fak you!! :P
[03:51:04] <pfred1> probably bad lighting
[03:51:05] <zeeshan|2> its lburry!!
[03:51:05] <zeeshan|2> ahhaha
[03:51:12] <zeeshan|2> what do you take photos with?
[03:51:33] <zeeshan|2> and why does your 7i77 have no orange field power connector
[03:51:35] <PetefromTn_> I use a flint and chisel like the flintstones
[03:51:36] <pcw_home> my eyes!
[03:51:56] <PetefromTn_> you can all kiss my keister heh
[03:51:58] <zeeshan|2> i got the premium orange version
[03:52:01] <zeeshan|2> :D
[03:52:08] <PetefromTn_> I don't even have one now
[03:52:13] <pfred1> that is the shakes
[03:52:19] <Connor> http://www.ivdc.com/cnc/mill_11_21_14_01.jpg
[03:52:22] <Connor> like mine. :)
[03:52:26] <os1r1s> Anyone have any good suggestions for a video camera to use as a spindle cam?
[03:52:30] <zeeshan|2> connor has the preimum orange version
[03:52:31] <zeeshan|2> :D
[03:52:32] <PetefromTn_> apparently the one that I sent is not repairable sigh
[03:52:47] <Connor> PetefromTn_: Dang, that sucks.
[03:52:47] <zeeshan|2> connor
[03:52:51] <zeeshan|2> did you seriously crimp all your wires
[03:52:53] <PetefromTn_> hey thats blurry too
[03:52:55] <zeeshan|2> to be put in pin pads? :p
[03:53:03] <PetefromTn_> how come nobody is whining about that pic
[03:53:07] <Connor> zeeshan|2: yes, yes I did.
[03:53:07] <pcw_home> Actually I got determined and fixed it
[03:53:14] <zeeshan|2> PetefromTn_: we like to pick on you :D
[03:53:22] <PetefromTn_> yeah that much I got
[03:53:36] <zeeshan|2> connor you're hardcore :P
[03:53:43] <PetefromTn_> pcw_home really? Or are you just bustin' chops?
[03:54:05] <zeeshan|2> wow pcw_home
[03:54:08] <zeeshan|2> master expert
[03:54:13] <Connor> pcw_home: Looking at my setup. http://www.ivdc.com/cnc/mill_11_21_14_01.jpg You think I'll have any issues with interferance on the ribbon cable? I'm a tad concerned about the Black/White wires.. they're my DC spindle...
[03:54:59] <pcw_home> Yeah 4 chips dead (output drivers, 3.3V regulator, DSPIC)
[03:55:09] <PetefromTn_> hey you got pins on all those wires!
[03:55:11] <zeeshan|2> 240v did only that? :P
[03:55:18] <PetefromTn_> how come we did not do that on my shite?
[03:55:39] <Connor> PetefromTn_: I told you to do it.. but you didn't want too.. :/
[03:55:50] <zeeshan|2> you guys have too much time
[03:55:52] <zeeshan|2> its pin pads!
[03:55:53] <PetefromTn_> so the repair will cost as much as three new 7i77's right WAAH!
[03:55:56] <zeeshan|2> you can shove a wire right inthere :P
[03:56:10] <PetefromTn_> when I don't remember that?
[03:56:26] <pfred1> its that moonshine
[03:56:27] <PetefromTn_> besides I don't have the right tools or pins for that
[03:57:08] <Connor> I don't know.. when we was wiring it up.. I told you about wire ferrules.. I don't have the exactly right tool either..but.. I have one that works.. :)
[03:57:32] <PetefromTn_> how much are the wire ferrules?
[03:57:41] <Connor> zeeshan|2: http://www.ivdc.com/cnc/mill_10_27_14_01.jpg
[03:57:43] <zeeshan|2> connor i thought wire ferrules were for non padded terminals
[03:57:53] <Connor> all those have wire ferrules too.
[03:57:55] <pcw_home> Connor: might be an issue, try an keep the motor leads at right angles to the signal cable
[03:58:27] <pcw_home> (to avoid making a transformer)
[03:59:08] <Connor> pcw_home: Right. I may get one of those 90 degree db25 ribbion connectors and use it... to put a bit more distance between them.
[03:59:25] <Connor> Looks like I would get 1.5" or so.
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[03:59:54] <pcw_home> you will know if theres too much coupling...
[03:59:56] <Connor> zeeshan|2: You can use them on anything. I like them better than just using bear wires..
[04:01:15] <zeeshan|2> i guess you dont have to worry about of them fraying
[04:01:17] <Connor> pcw_home: Anything I can do to mitigate it in the event I do? short of moving it? Chock coil on either the spindle leads or the ribbon cable?
[04:01:18] <zeeshan|2> and touching another terminal |:P
[04:01:20] <pcw_home> the plastic sleeve make a nice strain relief (for bending strain not pulling)
[04:02:02] <pcw_home> common mode choke on the spindle wires maybe
[04:02:51] <Connor> is that like one of those clip-on ones from radio-shack ?
[04:03:01] <pcw_home> (and twist the spindle wires)
[04:03:40] <pcw_home> (so the magnetic field cancels as much as possible)
[04:04:01] <Connor> right. I have some slack.. I might be able to twist it enough for it to stay.
[04:04:35] <pcw_home> big beads are a little better than clip on (but need to thread)
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[04:05:25] <Connor> It's wire spaded, not soldered.. so I can disconnect from the plug and thread them
[04:05:41] <pcw_home> I think the ones we use are from Laird
[04:06:00] <zeeshan|2> guys im stuck on this CAD problem
[04:06:17] <zeeshan|2> i need to generate random circles from 0.001" diameter to 0.008" max
[04:06:23] <pcw_home> you can steal them from defunct monitor cables if you have any left around
[04:06:26] <zeeshan|2> the space between them has to be minimum 0.003"
[04:06:30] <zeeshan|2> the circles cant intersect.
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[04:06:35] <zeeshan|2> i need to do this in cad. im so lost :/
[04:07:02] <pcw_home> write a little script
[04:07:29] <zeeshan|2> i think i have to use some math in the script?
[04:07:35] <zeeshan|2> to find intersections
[04:07:47] <pcw_home> toss em randomly about, delete any that violate your rules
[04:07:59] <zeeshan|2> delete em manually?
[04:08:17] <zeeshan|2> i dont know if the api in solidworks or inventor
[04:08:23] <zeeshan|2> has some sort of detection for intersection of circles
[04:08:28] <zeeshan|2> i know how to do it using math
[04:08:48] <PetefromTn_> can you use some kind of array setup?
[04:08:52] <zeeshan|2> but like using equatio of a circle x^2+y^2 = r^2
[04:08:53] <pcw_home> just make an array of centers and diameters
[04:09:08] <zeeshan|2> and checking circle intersection using that eqn
[04:09:31] <zeeshan|2> okay i can make an array like that
[04:09:34] <pcw_home> search for intersections on each new candidate
[04:09:36] <zeeshan|2> but how to check for intersection and minimum gap
[04:09:47] <zeeshan|2> using math? :p
[04:10:10] <zeeshan|2> okay i guess i need to look at the api
[04:10:18] <zeeshan|2> and see if there is intersection detection
[04:10:20] <PetefromTn_> take your paint gun, stick your thumb over the nozzle and spray it onto a sheet of paper and scan it LOL
[04:10:26] <zeeshan|2> PetefromTn_: ROFL
[04:10:31] <zeeshan|2> im trying to do the exact oposite
[04:10:35] <zeeshan|2> like make a stencil
[04:10:43] <zeeshan|2> so i can use a spray can and some of the holes let the paint through
[04:10:46] <Connor> pcw_home: What will the symptoms be if I do have interference?
[04:10:56] <zeeshan|2> thx :D
[04:11:09] <PetefromTn_> hehe
[04:11:16] <pcw_home> most likely will be sserial CRC or extra character errors
[04:11:26] <Connor> ok
[04:12:07] <pcw_home> (just because other errors like in step signals are not checked)
[04:13:13] <Connor> yea. I'll do extensive testing before I use to cut anything to be on the safe side.. fire up the spindle.. change the RPM.. jog it around while changing the RPM.
[04:13:46] <zeeshan|2> if there is a crc fail
[04:13:48] <zeeshan|2> what happens?
[04:13:55] <zeeshan|2> does it go in limp mode
[04:14:57] <pcw_home> messages with CRC errors are ignored by the remote (just logged)
[04:15:04] <zeeshan|2> ah
[04:15:29] <zeeshan|2> the reason i ask is i have to do crc check with modbus
[04:15:42] <zeeshan|2> i'm wondering what action i should take if there is a crc error
[04:15:47] <pcw_home> but this means the remote will not answer so you will get a notifier of a failed response
[04:15:48] <zeeshan|2> for vfd comm
[04:16:47] <zeeshan|2> maybe a resend of packet
[04:16:47] <pcw_home> the next cycle should be OK though so nothing is really lost
[04:16:54] <Connor> He.. I called VXD about that bearing that was messed up.. lady took my info.. and said she would send out a replacement.. SHE Freaking shipped it 1 day UPS from CA!
[04:17:12] <Connor> I had it the next day at like 9:30am in the morning... and didn't even realize it..
[04:17:33] <PetefromTn_> Damn that is impressive service
[04:17:43] <zeeshan|2> PetefromTn_: tell us
[04:17:55] <PetefromTn_> it's nice to get that kind of servive
[04:17:59] <PetefromTn_> service
[04:18:03] <Connor> No joke. and no real proof that it was damaged before I used it.. I could have damaged it.. I have no idea..
[04:18:08] <PetefromTn_> tell us wha?
[04:18:15] <zeeshan|2> oh i thought you were tell us about your 7i77 repair :D
[04:18:39] <PetefromTn_> wish I had something to tell hehehe
[04:18:52] <Connor> sounds like pcw_home fixed it. :)
[04:19:04] <PetefromTn_> that's the rumor
[04:19:06] <zeeshan|2> LeelooMinai:
[04:19:07] <zeeshan|2> http://www.kijiji.ca/v-tool-other/kitchener-waterloo/machining-tools/1035705885?enableSearchNavigationFlag=true
[04:19:12] <zeeshan|2> er
[04:19:13] <zeeshan|2> nm
[04:19:22] <Connor> (10:54:59 PM) pcw_home: Yeah 4 chips dead (output drivers, 3.3V regulator, DSPIC)
[04:19:55] <zeeshan|2> pete i think you should buy a new one
[04:20:06] <zeeshan|2> ps pcw i'll take pete's old one for a discounted rated
[04:20:07] <zeeshan|2> thank u!
[04:20:13] <zeeshan|2> :-)
[04:20:31] <PetefromTn_> thanks for that kind offer but no I think I'll pass
[04:20:44] <zeeshan|2> =D
[04:20:51] <zeeshan|2> man i cant find the damn pic someone took of me
[04:21:05] <Connor> PetefromTn_: If you end up using steppers on the lathe you might sell it to him so you can get a 7i76. :)
[04:21:06] <zeeshan|2> we have 80" vernier calipers mitutoyo at school
[04:21:10] <zeeshan|2> i was measuring myself with it
[04:21:11] <zeeshan|2> hahah
[04:21:31] <PetefromTn_> Connor That's a possibility ya never know
[04:21:44] <PetefromTn_> not sure what kind of motors I am going to put on this monster yet.
[04:22:00] <PetefromTn_> altho those closed loop steppers do look interesting.
[04:24:11] <Connor> I think I need to install Mach3 on a machine for a test.. I need to check the mpg pendant out and see if it goes to 4 digits after decimal or not.. and if so, what code gets sent to it from mach3 to toggle such mode..
[04:24:35] <PetefromTn_> NOOOOOoooooo!
[04:28:12] <zeeshan|2> perm ban
[04:29:06] <Connor> Give me another idea then...
[04:29:19] <Connor> I sent a email off to the people who make the thing... and asked on the forum too..
[04:29:31] <PetefromTn_> sure give it to me and it won't matter anymore hehehe
[04:30:02] <Connor> You'll just complain about it not having 4 digits after the decimal point...
[04:30:12] <Connor> :)
[04:30:52] <PetefromTn_> mmm probably..
[04:33:53] <PetefromTn_> what do you guys think is the practical size limit for a traveling table fixed gantry machine like the welded one we saw earlier?
[04:35:14] <skunkworks> Connor: what pendon?
[04:35:46] <skunkworks> pendant
[04:37:00] <skunkworks> if it is the hb04 or variant... then it looks like no.. https://www.youtube.com/watch?v=oA_JDPKp3tI
[04:39:33] <Connor> Hb04
[04:39:46] <Connor> Wired version
[04:40:30] <Connor> That video has the older version with the 100 CPR MPG
[04:44:29] <os1r1s> Connor: Does the wheel work ok
[04:44:33] <os1r1s> ?
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[04:47:01] <Connor_iPad> The detention is a little soft compared to other mpgs I've used. But not too bad.
[04:47:21] <Connor_iPad> Detent. Stupid autocorrect
[04:47:35] <os1r1s> Connor_iPad: One of the reviews I saw had it sticking
[04:47:53] <Connor_iPad> Not had that.
[04:48:06] <os1r1s> Glad to hear that isn't happening.
[04:48:18] <Connor_iPad> First one I got was bad. Mpg would loose direction.
[04:49:13] <Connor_iPad> I think it was a return that ebay reseller resold.
[04:50:21] <PetefromTn_> damn I can't seem to get the profile of this new rail to look the way I want in cad right now sigh
[04:58:02] <LeelooMinai> Do hal components work only by being run periodically and sampling signals or they can also be called by some kind of interrupt from the hardware?
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[05:14:54] <pcw_home> hal component functions are attached to periodic threads like this:
[05:14:55] <pcw_home> addf stepgen.makepulses basethread
[05:15:17] <Connor_iPad> LeelooMinai: I think they're polled based on basethread or servothread
[05:15:57] <LeelooMinai> Right, so there's no way to call them only at a point some signal changes?
[05:16:22] <Connor_iPad> What are you trying to do?
[05:16:42] <LeelooMinai> Decoding simple protocol coming from digital indicator
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[05:35:09] <LeelooMinai> That's lame though
[05:35:31] <Connor_iPad> Why?
[05:35:38] <LeelooMinai> I think I will go with my original plan of making fpga output the value of it in some registers
[05:35:55] <LeelooMinai> I will have to make a version of the firmware though
[05:36:44] <LeelooMinai> Because sampling some protocol at imprecise intervals is just ugly
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[05:39:07] <PetefromTn_andro> Ya know what's really ugly?
[05:40:09] <PetefromTn_andro> I think I am making a deeper impression in my bed mattress than normal after thanksgiving dinner and two slabs of cheesecake LOL
[05:41:13] <PetefromTn_andro> But damn it was worth it.
[05:41:35] <PetefromTn_andro> ;)
[05:45:35] <PetefromTn_andro> Somebody poted a 5hp three phase face mount motor on Craig's list nearby
[05:45:56] <PetefromTn_andro> It's a good price for it too
[05:46:29] <PetefromTn_andro> too but I really wanted to get a 7.5 hp motor
[05:46:51] <PetefromTn_andro> Which is what the lathe came with
[05:47:49] <PetefromTn_andro> Not sure what the specific information was on the original motor
[05:48:36] <PetefromTn_andro> Found just a few brochures on it online but nothing else
[05:49:10] <PetefromTn_andro> I would guess it probably had a slower speed motor maybe a 1725 rpm
[05:49:53] <PetefromTn_andro> Because you generally don't run a lathe this size up above more than say 4k or so I would think
[05:51:06] <PetefromTn_andro> If I picked up a 5hp motor the vfd would probably be a little cheaper and the machine came stock with that size
[05:51:42] <PetefromTn_andro> The 7.5 hp larger motor was optional.
[05:54:59] <PetefromTn_andro> Not sure what would be better for low end torque a 1725 rpm motor geared up to double that or a 3450 rpm motor with more like 1-1 ratio
[05:57:15] <PetefromTn_andro> It has a triple vee belt drive on it. There unfortunately is no motor pulley with the boxes of parts that came with it.
[05:58:56] <PetefromTn_andro> I think what I really would want is to get the larger7.5 hp motor and add a timing belt drive to the machine somehow to get the max torque possible
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[06:02:49] <PetefromTn_andro> Someone posted a cool 8hp continuous 18hp max brushed dc motor for sale too. Not even sure how I could power it but it said 24-72 vdc
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[06:25:56] <tjtr33> isnt the probe value captured during the same period as the trip?
[06:25:57] <tjtr33> so as the thread cycle time diminishes, the trip to capture interval is small, and _approaches_ interrupt speed?
[06:26:17] <tjtr33> and you can repeat the touch probe to prove repeatability
[06:27:37] <tjtr33> Happy Thxgiving all. have nice sleep on all that turkey tryptophane :)
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[07:42:22] <Tecan> http://i.imgur.com/JtRkQn4.jpg
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[08:09:45] <Deejay> moin
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[08:21:47] <Tecan> moin moin
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[12:49:08] <The_Ball> I measured the runout on my lathe today, is this as good as I can expect on a chinese import? https://www.youtube.com/watch?v=d02_FN2AsXM
[12:49:13] <The_Ball> It's about 0.01mm
[13:03:46] <_methods> new lathe or used lathe?
[13:04:18] <_methods> a lot of this chinese stuff has to be "tweaked" in when you get it, to run "right"
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[13:13:16] <taiden> hey call
[13:13:31] <taiden> trying to share wifi with my linuxcnc computer using a network bridge on windows 7 and an ethernet cable
[13:13:45] <taiden> i was able to do this pretty easily in the past with ubuntu 10, having trouble now on debian wheezy
[13:14:09] <The_Ball> _methods, I bought it new, had it for a few years, seen very little work
[13:14:27] <taiden> it responds to the cable being plugged in but doesn't actually appear to connect to the network
[13:14:40] <taiden> is there something simple I might have overlooked?
[13:15:31] <_methods> yeah with a lot of those chinese machines you may need to take that chuck off and check the spindle runout without the chuck on
[13:15:51] <_methods> all that runout could be in the chuck
[13:15:53] <The_Ball> _methods, that's exactly what I did
[13:16:00] <_methods> ahhh
[13:16:09] <_methods> same rounout in the spindle?
[13:16:34] <The_Ball> I only measured the spindle, 0.01mm on the "cone" and 0.01mm on the backing plate
[13:16:52] <_methods> well you might have to tweak the spindle in then
[13:17:07] <_methods> unless you can live with that runout
[13:17:14] <The_Ball> Does that mean stripping down the machine?
[13:17:25] <_methods> yeah at least the headstock
[13:17:35] <_methods> but i don't know without looking at the schematic
[13:17:51] <_methods> you might be able to loosen up some easy to get to stuff and bring it in
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[13:18:04] <The_Ball> hmm, ok
[13:18:04] <_methods> or you might have to rip apart the whole headstock
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[13:32:40] <taiden> Lol. two click share internet over ethernet on OS X, works flawlessly
[13:32:51] <taiden> 30 minutes trying to configure Windows 7 to do the same... nothing
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[13:38:10] <taiden> go figure
[13:42:24] <SpeedEvil> Deep throat 2014.
[13:42:25] <SpeedEvil> http://www.ebay.co.uk/itm/STARTRITE-316-HEAVY-DUTY-BANDSAW-/301390680020?pt=UK_Hand_Tools_Equipment&hash=item462c48cfd4
[13:44:47] <taiden> good lord that is cheap
[13:45:12] <taiden> so british
[13:46:25] <taiden> so I went to open a debian package for linuxcnc 2.7 wheezy-rt
[13:46:40] <taiden> and it asks me what program i want to use to open the package...?
[13:47:12] <taiden> so I choose Synaptic and it says
[13:47:21] <taiden> "failed to execute child process "synaptic"
[13:47:46] <taiden> lul
[13:49:22] <taiden> how the heck do I install this thing?
[13:49:33] <taiden> on ubuntu you'd just double click on a debian package and wheeeeee off to the races
[13:49:57] <jthornton> I installed it using the iso
[13:50:46] <ssi> time to go pick up my southbend :D
[13:51:07] <taiden> there's a linuxcnc 2.7 iso?
[13:51:25] <jthornton> 2.6
[13:51:36] <taiden> I'm trying to install 2.7
[13:51:41] <jthornton> sorry missed the 7 part
[13:52:14] <jthornton> bleeding edge
[13:52:22] <taiden> any ideas on how to open this debian package on ... debian lol
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[13:53:50] * jthornton seems to be having connection issues
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[14:02:56] <_methods> http://buildbot.linuxcnc.org/
[14:04:19] <_methods> oh ignore me
[14:04:33] <_methods> my screen was way up
[14:04:59] <Jymmm> /ignore _methods
[14:05:20] <_methods> i'm suprised you didn't have me on /ignore already lol
[14:05:33] <Jymmm> =)
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[14:09:39] <taiden> alright got 2.7 on there
[14:09:45] <taiden> tp is a lot faster but now i lose a ton of steps
[14:12:46] <taiden> 2.6 will be used in the shop
[14:17:23] <_methods> hahah apparently we've infected england with our black friday retardation
[14:17:45] <taiden> exporting democracy one made up holiday at a time
[14:17:52] * taiden salutes the flag
[14:18:08] * taiden fondles glock
[14:18:18] * taiden eats turkey
[14:18:44] <_methods> hilarious
[14:18:47] <PetefromTn_> taiden has my respect
[14:19:53] <_methods> wow poor saps have walmarts over there now
[14:20:01] <_methods> asda = walmart
[14:20:54] <PetefromTn_> over where?
[14:22:26] <SpeedEvil> _methods: it's really not
[14:22:41] <SpeedEvil> _methods: it's owned by the same vendor - but it hasn't meaningfully changed since the acquisition
[14:22:48] <SpeedEvil> they do not use the walmart brand at all
[14:28:07] <_methods> interesting
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[14:46:33] <archivist_herron> they did have a walmart sign as an addition on the derby asda for a period
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[15:03:42] <pcw_home> If you lose steps you probably have the velocity or acceleration set too high
[15:05:18] <pcw_home> new TP, same accel but at higher velocities = lost steps if you were close to the edge with old TP
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[15:14:01] <alex_joni> the new TP was tested intensively against limit violations, and if the limits are set ok for your machine there shouldn't ever be lost steps
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[15:26:28] <pcw_home> Yeah I suspect think his accel /velocitysettings are just too fast for the drives
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[15:30:05] <SpeedEvil> pcw_home: resonances also
[15:31:13] <pcw_home> Yeah the new TP will be tougher on drives because it will run the same back/forth accels at higher speeds than the old TP
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[15:34:55] <pcw_home> and since step motors lose torque quickly as speed increases, this
[15:34:57] <pcw_home> is likely to cause missed steps if there is not sufficient margin
[15:36:02] <taiden> my motors aren't running more than 1200 rpm
[15:37:14] <taiden> I think I will have to accept the fate of open loop steppers
[15:37:25] <taiden> and upgrade to closed loop servos later
[15:37:40] <SpeedEvil> taiden: resonance can be a big issue - robbing torque at particular speeds to the point it stalls
[15:37:58] <taiden> SpeedEvil: I wouldn't deny that at all
[15:38:06] <SpeedEvil> adding a fairly massive flywheel to the stepper shaft may actually help
[15:38:10] <taiden> do you think frame vibration will contribute as well?
[15:39:02] <SpeedEvil> possibly, yes
[15:39:12] <taiden> because this steel tube frame is terrible for that
[15:39:38] <SpeedEvil> adding lossy stuff can help
[15:39:48] <pcw_home> 1200 RPM is fast for common step drives (just about where torque drops close to 0)
[15:39:51] <SpeedEvil> stupid stuff like filling tubes with sand can help
[15:39:57] <SpeedEvil> ah
[15:40:00] <SpeedEvil> I missed that
[15:40:43] <SpeedEvil> https://www.youtube.com/watch?v=Mey1z2zRVYQ
[15:40:48] <SpeedEvil> (somewhat related)
[15:42:29] <taiden> OK when a whitepaper says 200 pps
[15:42:34] <taiden> is that 200 full steps per second?
[15:42:47] <taiden> or 200 pulses per second, including microstepping
[15:43:08] <SpeedEvil> full
[15:43:31] <taiden> does microstepping effect graphs using pps on the x axis?
[15:43:38] <taiden> it must
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[16:08:06] <PetefromTn_> http://knoxville.craigslist.org/tls/4780654957.html I was not aware Sears sold these 7x bandsaws but that one looks very nice albeit quite overpriced.
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[16:25:58] <archivist> taiden, 1200 rpm is fast for a stepper, the loss of torque at speed is very large
[16:28:06] <SpeedEvil> esspecially if you don't have a high voltage driver
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[16:40:37] <pcw_home> also hardware step generation will allow some boost in speed
[16:40:39] <pcw_home> (not because of the faster step rate but because of more regular steps at higher speeds)
[16:40:40] <pcw_home> the software stepgen suffers from phase noise caused by beats with the base thread rate
[16:40:42] <pcw_home> when running close to its limits
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[16:42:37] <pcw_home> this phase noise can end up at frequencies that excite resonances
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[16:51:07] <taiden> thanks for clearing that up pcw_home
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[21:35:53] <_methods> anyone in here use the eagle pcg-gcode ulp much?
[21:36:04] <_methods> i can't get it to read stuff on the milling layer for some reason
[21:37:09] <_methods> ahhhhhhh
[21:37:17] <_methods> it's just not reading my arcs
[21:37:24] <_methods> great googly moogly
[21:39:20] <_methods> guess i'll have to bust all the arcs up into line segments
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[21:40:32] <PetefromTn_> bust 'em up man!!
[21:40:54] <zeeshan|2> methods what the hell man
[21:40:58] <zeeshan|2> 0.01 mm runout on that chinese lathe
[21:41:03] <zeeshan|2> and youre telling the poor guy to fix that!! :P
[21:41:09] <_methods> heh
[21:41:14] <_methods> i didn't tell him to fix shit
[21:41:26] <zeeshan|2> :)
[21:41:32] <zeeshan|2> perfectionists
[21:41:45] <_methods> i told him if he couldn't live with that runout
[21:42:26] <_methods> yeah i would have left it alone
[21:42:36] <_methods> i don't make any space shuttle parts at the house
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[21:43:52] <zeeshan|2> PetefromTn_: having turkey left overs? :D
[21:43:59] <renesis> _methods: that sucks
[21:44:14] <PetefromTn_> LOL yeah for dinner tonight probably
[21:44:32] <PetefromTn_> and cheesecake for desert :D
[21:44:39] <zeeshan|2> nice
[21:44:41] <renesis> omg nom
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[21:44:48] <PetefromTn_> and how
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[21:46:59] <ssi> hi
[21:47:13] <zeeshan|2> Hi
[21:47:25] <ssi> got my new lathe home :D
[21:47:29] <zeeshan|2> pics
[21:48:39] <ssi> https://pbs.twimg.com/media/B3j0s6ZIQAA_KpF.jpg:large
[21:48:42] <ssi> lol
[21:48:53] <zeeshan|2> nice :D
[21:48:54] <ssi> check out that squat
[21:48:57] <_methods> right on
[21:49:29] <renesis> poorcar
[21:49:32] <ssi> best pic I have as of yet:
[21:49:32] <ssi> https://pbs.twimg.com/media/B3j0undIYAE_r5M.jpg:large
[21:49:46] <ssi> car is a CHAMP
[21:49:56] <ssi> pulls that load better than a v6 pickup would
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[21:50:02] <renesis> ha nice
[21:50:04] <ssi> and 37mpg average over 100 miles dragging it home :D
[21:50:13] <renesis> nuh uh
[21:50:15] <renesis> what car
[21:50:24] <ssi> diesel :)
[21:50:30] <ssi> normally I'd get more like 48mpg on that trip
[21:50:34] <ssi> at the same speeds :P
[21:51:04] <renesis> my car consumes all the gas
[21:51:14] <ssi> mine consumes zero gas :D
[21:51:19] <zeeshan|2> hey your manual mill is nice :)
[21:51:28] <ssi> zeeshan|2: yea!
[21:51:29] <ssi> I love it
[21:51:32] <ssi> it was a good deal
[21:51:42] <renesis> i like the cabinet stand
[21:52:09] <ssi> renesis: the old open stands look more traditional, but the cabinet stand is more useful
[21:52:21] <renesis> yeah
[21:52:45] <ssi> http://shanewhitlock.com/photo/d/4047-1/IMG_8234.jpg
[21:52:47] <ssi> that looks awesome
[21:52:48] <renesis> looks cool, too, big louver doors
[21:52:50] <ssi> but it's not as useful :)
[21:53:33] <renesis> thats doesnt look like a real machine it looks like some art gallery interpretation of a real machine
[21:54:01] <renesis> i bet someone spent like 20 minutes arranging those tools on the tray, haha
[21:54:06] <ssi> heheh
[21:55:01] <renesis> omg rain
[21:55:08] <renesis> so much rain is happening i did not expect
[21:55:22] <renesis> laundry gonna suck
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[22:02:58] <_methods> anyone got any slick tricks for converting a dxf with arcs to all line segs?
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[22:12:14] <Tom_itx> my cad cam will i think
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[22:12:35] <_methods> looks like i might have to install acad lol
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[22:12:45] <_methods> there are some lisp routines that do it i guess
[22:12:52] <Tom_itx> i've never tried it with acad
[22:13:29] <_methods> haha i've been tryin to save it as iges, stl, whatever to break the arcs up
[22:13:33] <_methods> but no go lol
[22:13:58] <Tom_itx> why do you need line segments?
[22:14:27] <Deejay> gn8
[22:14:44] <_methods> the eagle ulp i'm tryin to use won't read the arcs for some reason
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[22:15:12] <Tom_itx> dxf import to eagle?
[22:15:20] <_methods> yeah
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[22:15:23] <_methods> i think i got it
[22:15:30] <_methods> i got an stl to come in broken up
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[22:16:39] <_methods> it imports the dxf fine
[22:16:51] <_methods> the problem is pcb-gcode wont' read the arcs on the milling layer
[22:17:04] <_methods> i'm trying to make a custom pcb outline
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[22:17:50] <_methods> buwhahahah now i brought it in at wrong scale lol
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[22:24:33] <_methods> finally
[22:25:26] <_methods> ok so if you ever have to break up a bunch of arcs into lines you can do it by exporting as stl then import back into solidworks and make dxf from that
[22:27:40] <renesis> hahaha
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[22:28:23] <renesis> thats neat i guess you can control number of segments by the stl resolution
[22:29:48] <_methods> yeah
[22:30:00] <_methods> talk about goin 'round your elbow
[22:30:21] <_methods> i've had this problem before though and i always forget how i deal with it
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[22:31:45] <_methods> i'm always getting files from customers in splines and polylines now i'll just extrude them and save them as sldprt
[22:31:58] <_methods> then export that as stl and reimport
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