#linuxcnc | Logs for 2014-07-16

[00:43:27] <zeeshan|2> i need 2000oz-in steppers =/
[00:46:57] <ssi> lol for what
[00:47:06] <Valen> use servos
[00:47:10] <ssi> srsly
[01:36:55] <ssi> https://pbs.twimg.com/media/BspQxFXIUAAnBwA.jpg:large
[03:22:45] <Deejay> moin
[03:59:47] <Einar1> Goodmorning
[05:49:19] <jthornton> morning
[06:20:02] <Loetmichel> mornin'
[06:49:19] <ktchk> hello everybody linux-image 3.4.55-rtai-2 is missing from linuxcnc.org any clue???
[06:50:35] <kfoltman> hi Loetmichel
[06:51:15] <kfoltman> Loetmichel: http://i.imgur.com/1RPWRNn.jpg
[06:51:43] <kfoltman> mostly software issues now :)
[06:51:57] <archivist> and backlash
[06:52:01] <Loetmichel> kfoltman: hmm, there seems to be some step loss between drilling and isolating, otherwise looks good
[06:52:10] <kfoltman> Loetmichel: no, it's scaling bug due to bad DPI setting
[06:52:13] <kfoltman> at least 1.5mm of it
[06:52:17] <Loetmichel> ah
[06:52:29] <Loetmichel> but you seem to have a LOT of backlash
[06:52:33] <kfoltman> I used roll-my-own (and buggy) stuff to generate gcode
[06:52:58] <archivist> the jaggies around a circle a a sign of backlash
[06:53:09] <Loetmichel> (look for the uppermost circle on the right)
[06:53:25] <kfoltman> yes, that looks very backlashy
[06:53:43] <Loetmichel> kfoltman: you have seen the vid and the result of mine?
[06:53:48] <kfoltman> yes
[06:54:26] <kfoltman> so, anyway: the speed is OK now, the depth is relatively consistent (not 100% but no longer all over the place)
[06:54:38] <Loetmichel> yeak
[06:54:43] <Loetmichel> -k+h
[06:54:56] <kfoltman> so I have some vibration issues, bad tool mounting leading to tool wandering (and possibly some backlash there)
[06:55:01] <Loetmichel> but you should do something about that backlash
[06:55:20] <kfoltman> oh, and the Y axis doesn't seem very stable in terms of mounting
[06:55:29] <kfoltman> so the backlash might come from that I suppose
[06:55:38] <Loetmichel> depends
[06:55:47] <Loetmichel> do you use mormal threaded tods?
[06:55:57] <kfoltman> 1605 ballscrew
[06:56:03] <Loetmichel> or trapezodial/ballscrews?
[06:56:06] <kfoltman> the ballscrew is mounted to a board that's a bit wobbly
[06:56:13] <Loetmichel> hmm, ballscrews shouldnt have backlash
[06:56:24] <kfoltman> the rails are mounted correctly, but the bearings for the backlash are not
[06:56:26] <Loetmichel> maybe there is some slack in the mounts
[06:56:32] <kfoltman> yes, definitely
[06:57:41] <kfoltman> I'm going to spend some part of the holidays thinking about how to improve the software, then fix the hardware after coming back home :)
[06:59:40] <Valen> ballscrews can totally have backlash
[06:59:50] <Valen> even with anti-backlash nuts
[07:00:26] <kfoltman> Valen: but not 1mm or so
[07:00:40] <Valen> ok yeah one would hope for less than that ;->
[07:01:07] <kfoltman> Valen: in this case, I'm definitely willing to trust the Chinese manufacturers over myself :>
[07:01:33] <kfoltman> it's my first mechanical project, after all
[07:03:30] <kfoltman> bbl
[07:05:00] <Loetmichel> Valen: but not in the half-millimeter-range
[07:05:09] <Loetmichel> that would be VERY unusual
[07:05:44] <Valen> i dunno half a mm if it wasn't specced for anti-backlash might be possible
[07:05:51] <Valen> if it was specced for speed or something
[07:06:00] <Valen> I'd expect more like .1 mm though
[07:10:01] <Loetmichel> did you see the pic?
[07:10:19] <Loetmichel> [13:32] <kfoltman> Loetmichel: http://i.imgur.com/1RPWRNn.jpg
[07:10:34] <Loetmichel> that is AT LEAST half a mm on the right topmost circle
[07:11:03] <Smidge204__> I guess those are supposed to be circles?
[07:14:42] <Loetmichel> i think so
[07:15:57] <Smidge204__> Looks like a lot going on in that pic
[07:18:03] <Loetmichel> ?
[07:18:28] <Smidge204__> Other than the non-circular holes, it looks like there might be some kind of calibration error?
[07:18:58] <Smidge204__> As you move down, the holes seem to be more and more offset from whre you'd expect them to be
[07:19:13] <Loetmichel> kfoltman said he had used a self-programmed gcode generator, with a bit of a scaling issue between drilling and isolating...
[07:19:25] <Smidge204__> That'd probably do it
[07:20:22] <ktchk> Hello everybody linux-image 3.4.55-rtai-2 is missing from linuxcnc.org any clue???
[08:05:49] <ktchk> Good morning, the linux-image 3.4.55-rtai-2 is not there any more any clue????
[08:06:44] <kfoltman> Smidge204__: yes, that's a scaling issue, wrong DPI when exporting gcode to a bitmap
[08:08:36] <kfoltman> also, the trace vectorization is just stooooopid, I need to find a way that preserves the original vectors
[08:09:44] <JT-Shop> ktchk, no need to repeat over and over the same question all day long
[08:12:23] <Loetmichel> JT-Shop: isnt ktchk a bot?
[08:13:07] <JT-Shop> no clue
[08:17:16] <archivist> no he is in the far east
[08:24:20] <archivist> this is ktchk's website www.engrave3d.com
[08:29:50] <cradek> I don't understand what the question is
[08:31:22] <archivist> I guess a wiki link to a file is now dead
[08:32:38] <archivist> is it one if the images seb has replaced with a later one
[08:34:12] <archivist> googling takes me straight to http://wiki.linuxcnc.org/cgi-bin/wiki.pl?LinuxCNC_On_Ubuntu_Precise
[09:36:09] <PetefromTn_> Morning folks.
[09:38:05] <jdh> whuttup pete
[09:38:16] <jdh> another gorgeous day in appalachia?
[09:42:08] <ssi> morn
[09:44:50] <PetefromTn_> actually it is quite beautiful out today..
[09:45:23] <PetefromTn_> I took my Husky out this morning and it was nice and sunny and not hot like it has been lately.
[09:45:35] <PetefromTn_> I think we are supposed to hit low 80's today.
[09:45:40] <PetefromTn_> Welcomed change.
[09:47:14] <PetefromTn_> I finally got my kitchen cabinet bases sanded and refinished. We went with a cream color with a brown glaze and some water based urethane that seems to be very solid. Just gotta get them installed here now and then rip out the wall cabinets.
[09:48:06] <PetefromTn_> Gonna be embellishing them with light rails, Crown, Crown base, some end finishings and then spray and reinstall.
[09:48:49] <PetefromTn_> Also got some new counter tops and a new white sink my wife wanted....that enamel and cast iron sink is a heavy bitch!!
[09:49:05] <PetefromTn_> what are you folks up to?
[09:49:06] <FinboySlick> PetefromTn_: I read your last two statements diagonally and I was thinking (why does he need light rails for his chickens?)
[09:49:22] <jdh> Pete: all this for your hours that you want to get rid of?
[09:49:23] <PetefromTn_> chickens?
[09:49:31] <FinboySlick> I misread 'kitchen'
[09:49:35] <PetefromTn_> aah
[09:49:40] <PetefromTn_> hours?
[09:49:49] <PetefromTn_> you mean house?
[09:49:50] <jdh> your house.
[09:50:07] <PetefromTn_> yeah right now that is the only thing really keeping it from looking really nice inside.
[09:50:28] <PetefromTn_> We have ripped off a lot of the original trim inside too and we are refinishing it as well..
[09:50:38] <PetefromTn_> Anything to make it more beutiful and sell easier right now.
[09:51:09] <PetefromTn_> Besides this is mostly just paint and some hard work I already had most of the wood and trim from other custom cabinet jobs I did recently as leftovers.
[09:51:28] <PetefromTn_> If it makes our home more beautiful hopefully it will sell faster.
[09:51:47] <PetefromTn_> Besides our kitchen has been kinda shitty for a long time now and my wife and I are over it LOL...
[09:52:23] <jdh> I actually made stuff with my new 6040 last night. still have some feed/speed issues for finish and chip removal
[09:52:24] <PetefromTn_> Trying to decide if I should just repair and refinish all the original doors or make all new ones on my shaper....
[09:52:35] <PetefromTn_> what did you make?
[09:54:27] <jdh> HDPE stand for my dive scooter
[09:54:38] <PetefromTn_> I got a 12 foot piece of 1/2 inch 6061 bar and some 3/4 inch aluminum 6061 round stock ordered today from my local supplier. I am supposed to pick it up this afternoon.
[09:54:57] <PetefromTn_> It is for a customer's project I hope to be making at least several of.
[09:55:05] <jdh> watch the whip
[09:55:09] <PetefromTn_> I love dive scooters.... what kind is it..
[09:55:25] <PetefromTn_> what whip?
[09:55:40] <jdh> http://www.silent-submersion.com/Products/Viper/Viper.html
[09:55:59] <jdh> I assume you are turning the round bar.
[09:56:46] <PetefromTn_> yeah but it will be getting cut down beforehand. The 12 foot piece of flat bar will be cut to 6' lengths at the supplier.
[09:56:51] <PetefromTn_> that looks like a nice one man.
[09:57:25] <PetefromTn_> I got to use one of those when I was doing dive training down in South Florida years back. Sure is nice to just push a button and haul ass underwater..
[09:57:51] <jdh> I made a cradle for it so it doesn't roll around on the boat
[09:57:52] <PetefromTn_> Do you get those kinda run times they are quoting?
[09:57:57] <PetefromTn_> Nice..
[09:58:24] <PetefromTn_> I remember the one we had was strong but did not last too long on the batteries so you had to be sparing with it.
[09:58:26] <jdh> I've never run that long but I've gone a mile in then a mile out on it.
[09:58:40] <PetefromTn_> sweet. Great for beach dives I guess..
[09:58:54] <jdh> caves
[09:59:06] <PetefromTn_> LOL no thanks..
[09:59:43] <PetefromTn_> I went into one cave years ago and nearly got stuck.... that was it for me and caves. I do like wreck diving tho even tho it is about as dangerous.
[10:01:02] <PetefromTn_> Took my new Bronco for a cruise last night... Damn I love that 351. Sounds so mean LOL. Of course you can watch the gas gauge move when you push down the pedal LOL...
[10:01:47] <jdh> heh... guy here has an ancient bronco.. He's from .tn.us, license plate is 'SECFTBL"
[10:01:53] <PetefromTn_> Haven't got a tag on it yet but had to drive it around the neighborhood.
[10:02:14] <PetefromTn_> lemme guess.....it's orange and white LOL
[10:02:18] <PetefromTn_> God I hate that...
[10:02:36] <jdh> he's got some Vol stickers
[10:02:59] <PetefromTn_> I really love this truck tho.. It is so damn comfortable and clean inside it is not funny. Amazing really for a truck that is 20 years old.
[10:03:17] <PetefromTn_> I need to get my ass out there and wash and buff it out.
[10:04:08] <PetefromTn_> trying to figure out which aftermarket stereo to get for it. I had a sweet Alpine Bluetooth CD/USB in my Fiero GT that I should have not sold with the car. Thinking about getting one of those babies only their newest one.
[10:05:11] <PetefromTn_> JDH you need to get a Florida Gators sticker and tag his windshield with it or something when he is not looking. Make him really happy LOL.
[10:30:23] <archivist> anarchos2, where did you get ECA from in your question the other day?
[10:39:32] <ssi> https://pbs.twimg.com/media/BsrNezOIMAAaCTF.jpg
[10:39:35] <ssi> tube mounts!
[10:39:46] <ssi> I need fully threaded screws though before it'll be properly adjustable
[10:40:06] <kfoltman> ssi: 3d printed I presume?
[10:40:28] <jdh> pretty nice looking
[10:40:38] <jdh> how long to model?
[10:48:27] <ssi> kfoltman: yea
[10:48:30] <ssi> jdh: an hour or so
[10:49:34] <jdh> what kind of printer? those look like they are actually useful vs. most 3d prints
[10:52:23] <kfoltman> jdh: I wouldn't say so - 3d printers are certainly oversold/overhyped, but they have their good uses
[10:53:45] <ssi> it's a mendelmax style machine... those prints are pretty typical actually
[10:54:28] <ssi> just because most people print plastic moustaches with them doesn't mean they're not useful :P
[10:54:45] <jdh> key fobs, logos
[10:56:32] <jdh> I want a plastic thingie that holds an 80mm fan, that mates to my rebreather inhale hose.
[10:57:32] <jdh> but, I guess I will make it out of HDPE.
[10:57:35] <ssi> heh
[10:57:52] <marmite> i wanto kill someone :D
[10:57:56] <marmite> fawk
[10:58:01] <jdh> I have yet to make anything useful in SW
[10:58:14] <jdh> I must be missing some fundamentals of 3d stuff
[10:58:26] <marmite> the item iwanto mill is 218x204mm and my machine cad mill 215x202mm
[10:58:51] <jdh> turn it diagonally and do it in 2 parts
[10:59:05] <marmite> cant do it in two parts :/
[10:59:08] <marmite> thats the issue
[10:59:13] <marmite> and i cant rotate it either
[10:59:30] <marmite> http://hackoteket.se/?attachment_id=36 its a hard thing to rotate
[10:59:36] <jdh> even better, buy/build a new machine
[10:59:46] <marmite> i wish
[10:59:50] <jdh> whip out teh angle grinder and increase your envelope
[11:00:17] <marmite> yeah not so much i need
[11:00:31] <jdh> knock a mm off each edge
[11:00:45] <marmite> i wounder of i could putt washers
[11:00:47] <marmite> on the corners
[11:00:57] <marmite> on every screw so it would fit
[11:00:58] <marmite> :D
[11:01:13] <CaptHindsight> I use paintbrushes to make my fake mustaches
[11:02:18] <jdh> make the two long corners out of a different material then pocket them to slip over the existing part.
[11:02:47] <jdh> or just get rid of everything below the pickup selector
[11:02:52] <marmite> jdh: good idea onley need to do it on the left
[11:02:54] <marmite> yeah exactly
[11:03:00] <marmite> take that corner
[11:03:03] <marmite> and do a pocket
[11:03:27] <kfoltman> I wonder how many of those things that normally require printers, can be done with clever jigs cut with CNC router
[11:03:41] <jdh> then get a new machine
[11:03:53] <jdh> internal voids are hard
[11:04:00] <jdh> unless you build in sections.
[11:04:15] <jdh> which is what I will do for my fan holder
[11:06:41] <marmite> hmm i will check if i can lose a couple off mm
[11:08:45] <PetefromTn_> I don't see why you could not do that in two ops..
[11:13:22] <archivist> cheat and mount it on a rotary that is near an end
[11:13:48] <archivist> that is how I made a gear once
[11:19:52] <PetefromTn_> ssi Those tube mounts look pretty nice man. Can't wait to see your completed setup.
[11:21:14] <ssi> PetefromTn_: haha you and me both
[11:22:30] <jdh> don't look at the beam with your remaining eye.
[11:26:07] <PetefromTn_> Yeah that would NOT be a good idea.
[11:26:59] <PetefromTn_> Gotta make some fixtures for these parts I am doing for a customer tomorrow. Then I can start making the parts themselves. Always a pre work work with CNC milling it seems LOL.
[11:28:06] <PetefromTn_> Wish I had some extra cash I like grabbing the odd piece of aluminum from their cutoff piles when I run into Knoxville. Sometimes I get some damn good deals.
[11:29:24] <jdh> I wish there was some place around here that would sell scrap.
[11:29:41] <jdh> I got some stuff from one once, but last time they ran me out.
[11:32:40] <Smidge204__> jdh: There's no fab shops? They'll usually sell you lumps from their scrap iles
[11:34:40] <jdh> might be some of those. hadn't thought about trying them.
[11:35:31] <PetefromTn_> I used to buy drop pieces from the local large machine and fab shop but they went out of business. Now I just try to buy from this supplier because he often beats the online prices pretty good.
[11:35:44] <PetefromTn_> gotta go be back later guys.
[11:46:12] <tehcereal> hello what should i put in
[11:46:27] <ssi> nutmeg
[11:46:28] <tehcereal> in the stepconf wizzard for leadscrew pitch
[11:46:33] <tehcereal> i have mm/rev
[11:46:43] <tehcereal> and my pitch is for example 2mm
[11:48:43] <jdh> put in 2
[11:52:08] <jdh> or nutmeg
[11:55:17] <tehcereal> thx
[11:55:49] <Jymmm> cardamon
[12:06:12] <Jymmm> I need to make a cutting table (I already have the honeycomb), but my drillpress isn't the greatest and I'm not sure how I can drill/tap/clamp so that the pieces are and will remain square. http://i56.tinypic.com/eb8t9t.jpg and http://i53.tinypic.com/n63oyb.jpg and http://i51.tinypic.com/30vi4if.jpg
[12:07:08] <jdh> hmm... blind urls
[12:07:15] <Jymmm> Doesn't need to be exactly like those, but need to be able to drop the top rulers flush with the honeycomb so a sheet of paper will NOT slip underneath too.
[12:08:55] <archivist> tinypic just crashed my firefox use a sane picture site
[12:09:19] <Jymmm> archivist: It is sane
[12:09:20] <SpeedEvil> Just post them on 4chan/b/ - confuse the perverts
[12:10:41] <jdh> will the squareness of drilling/tapping matter much? seems like that will mostly be relative to what you are bolting to.
[12:11:41] <Jymmm> The cutting table just sits flush with the existing rulers in the machine, it's removeable not fastened in any way to the machine.
[12:12:09] <Jymmm> It's like an "insert" of sorts.
[12:14:20] <Jymmm> You can see the two black rulers it would sit flush against here http://www.inlay.com/cnc/laser/image2.jpg
[12:15:17] <SpeedEvil> what are you doing?
[12:20:07] <IchGuckLive> hi all B)
[12:22:14] <kfoltman> hi IchGuckLive
[12:22:55] <IchGuckLive> ;-)
[12:23:24] <IchGuckLive> kfoltman: kfoltman said he had used a self-programmed gcode generator, with a bit of a scaling issue between drilling and isolating.
[12:23:26] <IchGuckLive> WHY
[12:23:36] <kfoltman> why not?
[12:23:40] <IchGuckLive> isent there apcb 2 gcode you like
[12:23:54] <IchGuckLive> or just for fun
[12:24:20] <kfoltman> an excuse to make myself learn something that I would normally be too lazy to learn ;)
[12:24:52] <jdh> excellent reason.
[12:24:53] <kfoltman> also, I wasn't happy with existing pcb2gcode
[12:27:17] <IchGuckLive> ok up to you
[12:38:50] <IchGuckLive> i think jesosAlos in Spain ,etted today in his shop as temp hitted 40deg
[12:39:14] <IchGuckLive> melted like ice
[12:39:45] <Jymmm> Anyhow, what I was really asking for is suggests on alignment/fastening when the tools available are less than desired.
[12:42:03] <Jymmm> s/desired/ideal/
[12:42:09] <IchGuckLive> tools in retch are always lower thewn needed
[12:42:45] <IchGuckLive> 12 tools is good to go
[12:43:09] <IchGuckLive> 24 is best but you got 00 almost if not more in the toolbox
[12:44:49] <gene78> new 10.04.4 LTS install on lathe, old drive died. The cd went all thru the install, but on the reboot, grub (or bios) can't find a bootable drive!
[12:45:48] <gene78> So, you folks running atom mb's, what is he sata emulation set to in the bios? Its defaulted to IDE here.
[12:47:49] <Jymmm> Try ACPI
[12:48:24] <Jymmm> err AHCI
[12:49:05] <Loetmichel> hmmm, i just emptied my trousers front pockets... i think thats getting out of hand lately... (and i have 2 sticks lent away (8gb and 32gb) and have two sticks 64gb usb3 incoming friday... ;-) -> http://www.cyrom.org/palbum/main.php?g2_itemId=15032
[12:50:04] <gene78> Doing a re-install now with that setting
[12:50:33] <gene78> The bios warns about it though
[12:52:26] <K6MLE> I have installed the steppers on the machine, however, when jogging any of the axes, the motors appear to stall. What setting(s) in the HAL, or INI files can have an effect on that?
[12:54:04] <archivist> K6MLE, stepping too fast
[12:54:30] <archivist> K6MLE, also do you have enough current through the motors
[12:54:50] <archivist> also reduce the acceleration rate
[12:55:20] <K6MLE> Being a newbie, I would like to know what setting(s) to change ... I've altered the acceleration rate, with no improvement.
[12:55:34] <K6MLE> Brand new power supply prividing ample current.
[12:56:30] <archivist> have you set the current on your drivers
[12:57:08] <K6MLE> Yes, the current has been set according to the G540 manual ... I'm using a 2.7K resistor on the DB9.
[12:57:13] <archivist> set a slower acceleration till it works
[12:57:50] <archivist> and check you wired the motor correctly
[12:58:12] <ssi> heh I'm printing some cable chain, and I actually like the printed chain better than the igus opentop chain I have
[12:58:47] <K6MLE> I'll play with the acceleration, but I should mention that the stalls, when running gcode, mostly occur when making arcs, as opposed to a XY traverse.
[12:59:24] <K6MLE> I am confident with the way the motors are wired.
[12:59:27] <archivist> check stiffness of machine too
[12:59:44] <gene78> partitioner looks broken, it only allows a 1 meg boot/grub! wtf?
[12:59:45] <archivist> are they stalling at the top speed
[13:00:24] <K6MLE> Just swapped out old motors (unipolar) and an old drive, for newer bipolar motors and the G540.
[13:00:41] <kfoltman> Loetmichel: could be worse, endmills in your pocket in the airport ;)
[13:00:46] <K6MLE> Machine stiffness didn't appear to be an issue before.
[13:01:01] <archivist> K6MLE, top end speed may be lower
[13:01:07] <Loetmichel> kfoltman: the endmills are in the jackets pocket
[13:01:21] <Loetmichel> ... and the leatherman wave at the belt ;-)
[13:01:30] <K6MLE> I don't notice a specific stalling at top speed when making a traverse movement ...
[13:01:43] <K6MLE> Reduce the top end speed?
[13:01:54] <archivist> yes
[13:01:57] <kfoltman> Loetmichel: I was thinking of a machine gun ammo-looking endmill 'clip' ;)
[13:02:00] <K6MLE> Okay
[13:02:07] <archivist> torque drops with speed
[13:02:30] <kfoltman> Loetmichel: or a vanity CNC 'tool picker' ;)
[13:02:32] <ssi> K6MLE: if it's stalling in arcs rather than rapids, it may be accel
[13:03:02] <K6MLE> The location of the new machine means it's not currently on the network, so I'll check it and come back here.
[13:03:29] <K6MLE> ssi: as in accel to high?
[13:03:34] <ssi> yeah
[13:03:49] <ssi> I'd turn accel and velocity way down and work upwards
[13:04:14] <K6MLE> Okay, so I have two things to try ... accel and velocity ... will give them a try and report back ... thanks!
[13:04:48] <archivist> K6MLE, if you are running through a resonance it will get noisy and possibly stall
[13:05:23] <Loetmichel> kfoltman: nothing that fancy, jkust a few of these packets: http://www.cyrom.org/palbum/main.php?g2_itemId=13000
[13:05:23] <K6MLE> I was hoping the resonance issues would have been solved by putting the motors under the load of the machine ...
[13:05:28] <archivist> arcs are a "good" way of finding that problem
[13:06:20] <ssi> K6MLE: what drives are you using
[13:06:51] <kfoltman> Loetmichel: BTW, just ordered some 45 degree v-bits, going to try your method of enclosure-making (possibly using ABS or thick HIPS as a material)
[13:07:05] <kfoltman> Loetmichel: and put way more screws in the gantry :D
[13:07:12] <Loetmichel> hrhr
[13:07:39] <archivist> ssi, G540
[13:07:41] <kfoltman> if I push on the Z axis, the whole gantry moves, so that's definitely not good
[13:07:48] <kfoltman> might be the source of backlash indeed
[13:07:55] <Loetmichel> i "lost" about 1000 spax screws 5mm by 50mm in this: http://www.cyrom.org/palbum/main.php?g2_itemId=4935
[13:08:12] <kfoltman> well, you needed the rigidity for that area
[13:09:16] <archivist> the extra screw are for DTI magnetic bases to stick to :)
[13:10:37] <Loetmichel> no, to hold the base and the gantry stiff
[13:10:55] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=4053 <- thats inside the base
[13:11:55] <kfoltman> K6MLE: if it stalls when moving diagonally but no in X only or Y only then it may be a power supply (guess how I knew :>)
[13:11:56] <archivist> I think you should cast one in iron one day
[13:12:19] <kfoltman> archivist: marble? granite?
[13:12:41] <archivist> Iron is nice
[13:13:07] <kfoltman> "my CNC machine will be my gravestone"
[13:13:12] <k6mle-CNC> Got a wifi usb dongle for network from the mill machine
[13:13:38] <Flipp> anyone have a suggestion for a smallish miter saw that'd fit in an apartment?
[13:13:39] <k6mle-CNC> Should I make the velocity and accel adjustments in the INI file at [TRAJ}?
[13:14:44] <kfoltman> I never had accel problems with arcs that wouldn't be reproducible with rapids
[13:14:53] <kfoltman> or at least, not yet
[13:14:59] <k6mle-CNC> Flipp: try www.micromark.com/
[13:15:38] <k6mle-CNC> Perhaps the problem is not with accell then?
[13:16:00] <kfoltman> k6mle: what happens if you reduce the drive current for the steppers?
[13:16:09] <kfoltman> k6mle: does it also stall when running all 3 axes at the same time?
[13:16:14] <kfoltman> preferably at top speed
[13:16:21] <Loetmichel> kfoltman: s/accel/resonance and i can tell the nicest stories ;-)
[13:16:36] <kfoltman> Loetmichel: resonance seems evil indeed
[13:16:37] <k6mle-CNC> Not sure how I'd make that adjustment on the G540?
[13:16:48] <ssi> the resistor on the connector
[13:16:52] <kfoltman> Loetmichel: something I'd be worried about is the tool chatter
[13:17:20] <Loetmichel> ideallys: the tool shouldnt chatter anyways ;)
[13:17:31] <k6mle-CNC> The resistor is currently set to provide 2.7 amps to a motor rated at 2.8 amps.
[13:17:34] <Loetmichel> -s
[13:18:00] <kfoltman> k6mle: is your power supply adequate? is your wiring adequate?
[13:18:09] <kfoltman> any risk of ground loops?
[13:18:23] <ssi> what voltage
[13:18:36] <kfoltman> also, mechanical problems can easily cause missed steps
[13:18:45] <k6mle-CNC> I think the supply (bought for this purpose) is more than adequate ... it's got plenty of headroom ...
[13:18:59] <kfoltman> what voltage/current?
[13:19:20] <k6mle-CNC> As for mechanical problems ... the machine was working fine with the old motors and controller ... just needed to upgrade it.
[13:19:59] <k6mle-CNC> Power supply current is 8 A and the voltage is set to 45 volts at present.
[13:20:22] <IchGuckLive> thats ok for 3 Axis
[13:20:24] <kfoltman> 2.7A per phase to 3 motors?
[13:20:39] <gene78> install done in AHCI mode, no boot disk found on the reboot.....
[13:20:43] <k6mle-CNC> kfoltman: that's correct.
[13:20:47] <archivist> bigger motors often are slower so expect to change acceleration and max speed
[13:21:12] <kfoltman> k6mle: 4-wire or 8-wire motors?
[13:21:19] <k6mle-CNC> 4-wire
[13:21:44] <kfoltman> yeah, I'd start with reducing the max velocity and the acceleration
[13:22:48] <k6mle-CNC> Right now the INI file has MAX_LINEAR_VELOCITY = 0.78, MAX_ACCELERATION = 1.5.
[13:23:20] <k6mle-CNC> That's in the [TRAJ] section.
[13:24:29] <kfoltman> k6mle: just try halving both and see what happens, just to see
[13:24:54] <k6mle-CNC> Okay ... will cut them both in half ..
[13:25:54] <kfoltman> what mode did the old driver work in? what kind of microstepping?
[13:26:46] <k6mle-CNC> kfoltman: that's a good question ... it's an old drive that came with the MAXNC10, with unipolar motors.
[13:27:04] <kfoltman> did it use microstepping? 2x, 4x, 8x, 16x?
[13:27:26] <IchGuckLive> kfoltman: its fixed on 16x
[13:27:33] <kfoltman> IchGuckLive: I mean the old one
[13:27:47] <kfoltman> before he replaced it with gecko
[13:27:50] <anarchos> any reason why i shouldn't use a 25 foot parallel cable? my choices are 3 feet, which is too short, or 25 feet (everything else is sold out)
[13:27:56] <IchGuckLive> oh are there more versions I LOVE Europ no Gecko inside
[13:28:02] <kfoltman> anarchos: signal integrity?
[13:28:11] <anarchos> that's what i was thinking
[13:28:19] <pcw_home> shipping weight?
[13:28:26] <kfoltman> that too
[13:28:47] <anarchos> lol, free shipping :P
[13:31:10] <Tom_itx> if it's a good cable it should work
[13:32:31] <Tom_itx> or wait and get the length you actually need
[13:33:23] <ssi> hm I wonder if I have any din rail left
[13:33:33] <ssi> or mesa din mounts for that matter... probably should have thought to include those in my order :P
[13:33:49] <Tom_itx> i wish i'd have gotten those
[13:33:53] <seltecc> Hi Ichgucklive...
[13:34:21] <seltecc> wie gehts denn so?
[13:34:25] <ssi> ooh I have two sets of din rail mounts actually :D
[13:34:46] <Tom_itx> ssi, i think PCW should remind us upon ordering that we're surely forgetting something...
[13:34:53] <ssi> hahah
[13:35:05] <ssi> I have a big ol' box of extra mesa gear on hand for exactly that reason
[13:35:08] <IchGuckLive> hi seltecc
[13:35:26] <IchGuckLive> seltecc: please hit mi nick for german
[13:35:32] <anarchos> i need to figure out how to install my kelling drivers onto a din rail
[13:36:19] <ssi> I made an electronics shelf and mounted the drives directly down to the shelf
[13:36:50] <ssi> https://pbs.twimg.com/media/Bsr2IBJIIAAsSqv.jpg
[13:39:09] <Tom_itx> i mounted mine under the heatsink on the door: http://tom-itx.ddns01.com:81/~webpage/cnc/psu/control3.jpg
[13:40:02] <Loetmichel> mine are on the back of the machine
[13:40:21] <Tom_itx> my machine isn't that big :D
[13:40:34] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=12811
[13:40:38] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=12808
[13:40:46] <Loetmichel> mine neither
[13:41:05] <Loetmichel> only 200mm*110mm*110mm
[13:41:11] <Loetmichel> travel
[13:41:32] <ssi> cute
[13:41:45] <ssi> how do you like that spindle?
[13:42:21] <Tom_itx> i wonder if a spindle like that would fit on a sherline
[13:42:39] <Tom_itx> would hardly be worth it...
[13:42:42] <jdh> the 800w should.
[13:43:25] <Tom_itx> i don't like the way they have the motor offset on the Z axis
[13:43:37] <Tom_itx> i'm using a counterweight to help offset it
[13:43:38] <Loetmichel> ssi: great
[13:43:51] <Tom_itx> Loetmichel what collets does it use?
[13:43:55] <Loetmichel> er11
[13:43:59] <ssi> I've always wanted to get one
[13:44:04] <Tom_itx> max diameter tool?
[13:44:06] <ssi> they're a bit more money than I've ever been able to justify :)
[13:44:13] <Loetmichel> 8mm with special collets
[13:44:17] <Loetmichel> usually 7mm
[13:44:21] <Tom_itx> ok
[13:44:28] <ssi> Loetmichel: is yours the 800W one?
[13:44:39] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=13221
[13:44:40] <Loetmichel> it is
[13:44:46] <Tom_itx> i think i go up to 3/8" i may have one 1/2" collet
[13:44:54] <ssi> what's the lowest practical speed on it?
[13:45:05] <Loetmichel> and the second one on the chinese 6040 cnc at the company is also
[13:45:28] <Loetmichel> ... which now, after about 2 jears, starts to "sing" with the bearings when cold
[13:45:39] <Tom_itx> my only issue with that is not being able to preset tooling
[13:45:55] <Loetmichel> 35Hz works, althoug with mutch less torque
[13:46:34] <Loetmichel> torque stats to develop at about 100Hz
[13:46:37] <Loetmichel> starts
[13:46:39] <Tom_itx> it would be cool if they made one that took tool holders
[13:46:58] <Loetmichel> there is one iirc
[13:47:10] <ssi> what sort of tool holders?
[13:47:10] <Tom_itx> probably alot more $$
[13:47:11] <Loetmichel> but so expansive that i makes no sense
[13:47:17] <Tom_itx> yup
[13:47:22] <Loetmichel> sk something
[13:47:25] <Loetmichel> forgot it
[13:48:08] <Loetmichel> sk20 i believe
[13:48:27] <Loetmichel> and you'll need compressed air, and much more height
[13:49:17] <JT-Shop> Tom_itx, where was that speed and feed calculator that had material and stuff?
[13:49:56] <Tom_itx> http://zero-divide.net/index.php?page=fswizard&shell_id=199&load_tool_id=27011
[13:50:21] <Tom_itx> or
[13:50:21] <JT-Shop> thanks
[13:50:23] <Tom_itx> http://www.onsrud.com/plusdocs/Doc/index.html?model.code=FeedSpeeds
[13:50:36] <Tom_itx> JT-Shop, you can download the first one as a standalone
[13:51:00] <Tom_itx> in fact, i've got it on my phone
[13:51:10] <JT-Shop> thanks
[13:52:24] <Tom_itx> http://zero-divide.net/index.php?page=fswiz_mobile
[13:57:52] <JT-Shop> is it only the mobile one that you can download?
[14:05:56] <jdh> the free one only has a few materials
[14:16:48] <JT-Shop> I only use a few materials
[14:17:07] <jdh> me too. It has 6061 and some steels
[14:17:24] <JT-Shop> is only the phone one you can download?
[14:17:59] <JT-Shop> oh windows only
[14:18:18] <jdh> can try g-wizard
[14:19:10] <JT-Shop> I rarely need one, just when I use a hss end mill on something
[14:19:40] <jdh> I think you will re-evaluate after you see what max actually is.
[14:19:45] <jdh> <urk>
[14:19:56] <JT-Shop> me?
[14:20:01] <jdh> no, wrong channel.
[14:20:28] <JT-Shop> heh
[14:20:35] <jdh> I wonder if I would get a better finish on HDPE if I slowed the spindle down a lot
[14:21:11] <_methods> that shit is a nightmare to get speed and feed just right for good finish
[14:21:17] <_methods> hard to break a chip
[14:21:51] <_methods> coolant can have a large effect on hdpe finish
[14:21:55] <JT-Shop> jdh, you need a dead sharp tool and big chips on most plastics
[14:22:04] <jdh> no coolant.
[14:22:10] <_methods> ah
[14:22:13] <_methods> good luck
[14:22:25] <jdh> yeah, chips are fairly small. Worse in slots
[14:23:50] <Loetmichel> compressed air works as cooolant, too
[14:23:54] <JT-Shop> I like onshrud (or however it is spelled) single flute for plastic
[14:23:56] <Loetmichel> for plastics especially
[14:24:26] * JT-Shop should use the sf calculator he wrote...
[14:24:26] <jdh> I will try to bring myself to buy an onsrud or two
[14:24:32] <_methods> i thought he was turning?
[14:24:36] <_methods> you milling?
[14:24:40] <jdh> routing
[14:24:43] <_methods> ah
[14:25:15] <jdh> mainly profiles so the deeper it gets, the worse it is since the chips don't come out.
[14:25:21] <_methods> what are you using now for tool
[14:25:28] <jdh> I imagine an onsrud up-cut cutter would help a lot.
[14:25:31] * JT-Shop cuts a 1 1/2" deep slot in 1018 with a 3" long 7/16" hss end mill... I hope I make it
[14:26:00] <jdh> first attempt was a 2-flute 1/8" carbide because it was there
[14:26:11] <_methods> yeah 2 fluter should work
[14:26:13] <jdh> I have some single flutes too but I have snapped a few of those
[14:26:20] <_methods> single flute would be better
[14:27:05] <_methods> well if you're not using coolant at least use airblast
[14:27:08] <_methods> that will help
[14:27:42] <jdh> first cut with this machine was last night. I was holding the vacuum cleaner hose.
[14:28:45] <jdh> I have other things to do to it first though. having to remember to turn the spindle on is amazingly hard.
[14:33:03] <kfoltman> Loetmichel: after adding more screws, I started getting motor stalls and all sorts of other badness
[14:33:29] <kfoltman> not unexpected...
[14:33:35] <Loetmichel> :-)
[14:37:47] <JT-Shop> not having a 19/32" drill bit I guess I'll drill it out to 9/16" then mill the hole to 19/32" then ream to 5/8"
[14:39:50] <kfoltman> Loetmichel: srsly, it's HORRENDOUS, farty resonance when starting, jerky movement, and the whole box wobbles as if it was about to explode
[14:40:17] <Loetmichel> makea vid
[14:41:09] <jdh> I'd like to ride on it.
[14:47:00] <kfoltman> Loetmichel: uploading, going very slow
[14:52:30] <JT-Shop> wow it cut the whole slot without breaking
[14:52:59] <kfoltman> about 50% uploaded
[14:58:29] <JT-Shop> at least the slot is roughed out now
[14:58:30] <kfoltman> Loetmichel: https://drive.google.com/file/d/0B32uenhGO_E3UWROX2FwOW95SUk/edit?usp=sharing you can only download it as 3gp :(
[15:02:28] <skunkworks> kfoltman, how many steps/rev are the steppers set to?
[15:03:03] <kfoltman> skunkworks: hw is 200 steps/rev and x8 microstepping
[15:03:20] <skunkworks> what drives?
[15:03:31] <kfoltman> cheapest crap tb6560
[15:03:46] <skunkworks> can you adjust the steps/rev?
[15:03:58] <kfoltman> it's clearly a mechanical problem, pressing on the fixed bearing block side helps
[15:05:05] <seltecc> how can I switch directions of arrow keys in the hal file?
[15:05:17] <Loetmichel> thats a bearing block not gliding but "rubbing"
[15:05:30] <Loetmichel> are that SBR?
[15:05:36] <Loetmichel> or platic gliders?
[15:05:38] <Loetmichel> +s
[15:05:47] <seltecc> where to put "invert 1"
[15:05:50] <kfoltman> SBR
[15:05:56] <Loetmichel> hmmm
[15:06:06] <kfoltman> the offending one is the ballscrew floating side
[15:06:09] <Loetmichel> maybe you got dirt in one of the bearing blocks
[15:06:14] <kfoltman> could well be
[15:06:23] <Loetmichel> that sounds ecacly like sliding balls instead of moving balls
[15:06:56] <kfoltman> ok, so it's sliding and not rolling
[15:07:07] <kfoltman> sounds bad
[15:07:35] <kfoltman> it's most apparent at f300, at f400 and higher it mostly goes away
[15:07:41] <seltecc> change directions of manual jog with "- invert 1" how?
[15:09:27] <JT-Shop> seltecc, does G0 go the right way?
[15:11:02] <seltecc> nope..
[15:11:56] <JT-Shop> invert the direction signal
[15:12:11] <seltecc> my x shows y in linuxcnc and the directions of x and y should be in opposite directions....
[15:12:30] <kfoltman> so you want to change axes not directions?
[15:12:40] <kfoltman> as in, swap axes
[15:12:42] <seltecc> both
[15:13:22] <seltecc> in the hal file....
[15:14:45] <JT-Shop> parallel port stepper machine?
[15:14:59] <seltecc> yup
[15:15:02] <JT-Shop> how did you make the configuration file?
[15:15:53] <seltecc> http://pastebin.com/JwjwptfY
[15:16:02] <seltecc> here....
[15:16:31] <skunkworks> change SCALE = 40.0 to
[15:16:35] <skunkworks> SCALE = -40.0
[15:16:51] <seltecc> sorry this was the ini...
[15:16:52] <JT-Shop> you would have to change the pins in the hal file to match how you wired it up or change the wires
[15:17:04] <seltecc> sorry...
[15:17:46] <seltecc> http://pastebin.com/h5SxiiRd
[15:18:41] <seltecc> wires, yes but I want to make and learn how to make it in the hal file...
[15:22:57] <JT-Shop> change the parallel port pins to match net xstep => parport.0.pin-02-out
[15:23:24] <JT-Shop> if x step is really pin 5 then change them to match your physical wiring
[15:23:26] <Deejay> gn8
[15:23:33] <JT-Shop> nighty night
[15:24:31] <JT-Shop> seltecc, http://linuxcnc.org/docs/html/hal/parallel_port.html
[15:24:44] <JT-Shop> if a direction pin is wrong invert it
[15:25:00] <JT-Shop> parport.<p>.pin-<n>-out-invert (bit) Inverts an output pin.
[15:25:40] <seltecc> one sec I post my pins...
[15:26:42] <seltecc> x step and dir is 2, 14
[15:26:58] <seltecc> y 16, 3
[15:27:19] <seltecc> z 7, 8
[15:27:34] <seltecc> a 6, 5
[15:27:49] <seltecc> b 14 , 4
[15:27:54] <Einar1> Loetmichel: Why do you use regulated power supply for the step drivers?
[15:28:44] * JT-Shop heads to town
[15:31:36] <jdh> why such 'odd' pins?
[15:31:48] <seltecc> the link does not open...
[15:32:13] <seltecc> 5 axis breakout board...
[15:32:27] <seltecc> why odd?
[15:33:29] <seltecc> jdh: why odd?
[15:34:39] <jdh> just makes it hard to remember what goes where (for me anyway) I guess if teh BoB is wired that way, that's all you can do.
[15:35:52] <seltecc> ok....can t change I guess
[15:36:24] <PCW> yeah more common to use the data pins for step/dir, that is DB25 pins 2..9
[15:39:44] <seltecc> my x shows y in linuxcnc and the directions of x and y should be in opposite directions....
[15:41:00] <seltecc> the manual jog should be inverted in the hal file...
[15:41:20] <seltecc> exchange left and right....
[15:41:50] <jdh> what is your differentiation between 'manual jog' and axis direction?
[15:41:50] <seltecc> left and right arrow....
[15:42:47] <jdh> invert your dir pin, or just change your scale to -
[15:42:58] <seltecc> they are not in proper directions and should be inverted...
[15:43:38] <seltecc> would you like to see my hal file...?
[15:43:53] <jdh> invert your dir pin, or just change your scale to -, or swap the two phase A wires on your driver
[15:45:30] <seltecc> i did just that and linuxcnc didn t start...
[15:46:16] <jdh> what did it say
[15:46:30] <seltecc> maybe manual exchang wires is easier
[15:47:32] <jdh> remove power first.
[15:47:35] <seltecc> here is my hal file would you be so kind and paste the proper changes...?
[15:48:00] <seltecc> http://pastebin.com/h5SxiiRd
[15:48:11] <k6mle-CNC> I've made some changes to accel and velocity, with some positive results. One thing that's still troubling is that every so often, a direction change won't take place.
[15:48:43] <seltecc> yup, but hal file , lets try for aducation also...
[15:48:46] <k6mle-CNC> I seem to find it occuring mostly on the Z axis.
[15:49:15] <k6mle-CNC> Any thoughts as to what I might tweak to correct it?
[15:50:31] <k6mle-CNC> Being a newbie, I'm all up for education! :)
[15:51:20] <seltecc> sorry, yes education...!
[15:51:48] <seltecc> this is the right place to be for this...
[15:53:10] <Tom_itx> JT-Shop, were the feeds close for your cutter?
[15:57:22] <seltecc> my x shows y in linuxcnc and the directions of x and y should be in opposite directions when manual jog with arrow keys....
[15:58:59] <seltecc> how to edit the hal file to fix all problems...
[16:11:31] <k6mle-CNC> seltecc: it looks like you might have the X & Y motor connectors reversed? Can you just swap connectors?
[16:26:25] <Tom_itx> is GLIBC a graphic lib?
[16:27:22] <Tom_itx> getting an error with 10.04 installing my logic analizer
[16:33:42] <archivist> k6mle-CNC, I found a break out board had a resistor for the driver opto as well as the driver having one so the signal was not getting into the drive properly, one needs to scope the signals to check
[16:35:18] <k6mle-CNC> archivist: assuming the drive isn't the problem, it would seem there's an adjustment that should be made in either HAL, or INI files?
[16:35:30] <gene78> 10.04.4 linuxcnc install probs, no ipv4 static network, what file contains the ipv4 disable command?
[16:35:43] <archivist> this is an electronic not software
[16:35:53] <archivist> problem
[16:36:22] <k6mle-CNC> so it could be the parallel port giving me some grief?
[16:36:54] <archivist> is the port direct to the driver or via some breakout
[16:37:07] <k6mle-CNC> I have no breakout ...
[16:38:01] <k6mle-CNC> I'm pretty sure I set the BIOS for EPP on the parallel port ...
[16:38:33] <archivist> I would be scoping the signal on the dir pin
[16:39:04] <k6mle-CNC> Okay ... I'll create something that will allow me to do that ...
[16:39:57] <archivist> also some have needed to change the delay dir signal change to step time which is in the ini somewhere
[16:40:24] <JT-Shop> Tom_itx, seemed to be
[16:41:01] <k6mle-CNC> archivist: yeah ... I was hoping to play with that before having to drag out the scope!
[16:41:03] <CaptHindsight> archivist: ever cut gears like these used in automotive for differentials? http://imagebin.ca/v/1TYb2OtvuFC6
[16:41:09] <archivist> called dirsetup
[16:41:39] <DaViruz> hypoid
[16:41:47] <archivist> CaptHindsight, no, too specialised for me
[16:43:07] <CaptHindsight> archivist: some of these are amazing, the gears in that pic have 250K miles on them
[16:43:40] <archivist> nice even wear
[16:44:20] <archivist> unlike the typical 150 year old clock pinion
[16:44:42] <CaptHindsight> the only reason it's apart is the pinion seal has started leaking after 20 years
[16:45:05] <k6mle-CNC> archivist: the HAL file shows dirhold and dirsetup both at 6500 ... does that seem reasonable for G540?
[16:45:11] <CaptHindsight> what happens in old clock gears? How do they wear?
[16:45:29] <archivist> CaptHindsight, a bit of wear http://www.collection.archivist.info/archive/DJCPD/PD/2001/2001_07_04_worn_clock_pivot/P1010097.JPG
[16:45:51] <archivist> you can see the flank craters
[16:46:07] <archivist> k6 no idea
[16:46:41] <archivist> the pivot was the best I had see so took a pic
[16:46:46] <archivist> seen
[16:47:35] <k6mle-CNC> archivist: okay ... thanks ... the default setting is 200ns for the G540 in stepconf ... I think I'll try lowering them ...
[16:55:06] <gene78> set it up, made it immutable so network-mangler couldn't screw it up, rebooted, works
[17:20:32] <ssi> debating whether there's any benefit to trying to setup motion via 7i43 and daughtercard, or just wait til 7i76 kit comes tomorrow
[17:51:03] <CaptHindsight> 0.00005'' Electronic Digital Indicator http://www.ebay.com/itm/0-1-2-x-0-00005-Electronic-Digital-Indicator-with-Yellow-LCD-611H-1348-/161348964940 I think the only thing they got right in this listing is the LCD being Yellow
[17:57:08] <ssi> lol
[17:57:11] <ssi> it's more of an amber
[18:07:26] <SpeedEvil> .00005 is about .000mm
[18:07:31] <SpeedEvil> .0001
[18:07:45] <SpeedEvil> Which raises the obvious question.
[18:23:00] <CaptHindsight> 0.00005 inches = 1.27 microns, so this should good enough to watch the thermal expansion and contraction of parts. I just don't see the fittings on the back for the controlled air temp supply to keep the indicator within 1 deg C :)
[18:26:17] <SpeedEvil> It doesn't need to be, if it's made of invar
[18:33:04] <CaptHindsight> not a bad deal then for $75 if it is
[18:33:38] <ssi> CaptHindsight: so, that auction for the u12 geminis for $110 apiece
[18:33:45] <ssi> CaptHindsight: has "make offer" turned on
[18:33:58] <ssi> so I put in 3x $75 + 28 shipping
[18:34:08] <ssi> 24 hours later, he flat declined it... no counter offer
[18:34:14] <ssi> so I put in 3x $90 + 28 shipping
[18:34:19] <ssi> 24 hours later, again, declined
[18:34:20] <ssi> so wtf
[18:34:23] <CaptHindsight> heh
[18:34:23] <ssi> I just bought them full ass price
[18:34:28] <ssi> tired of screwing around with him
[18:34:43] <ssi> why bother turning on make offer if you're not gonna play the game
[18:34:48] <CaptHindsight> maybe he was thinking <$109 would be robbery
[18:35:07] <ssi> perhaps
[18:35:14] <ssi> $110 is still cheap for them, so it's fine
[18:35:16] <CaptHindsight> sometimes it by mistake
[18:35:29] <CaptHindsight> other times, who knows
[18:35:40] <ssi> but like, when I put the offer in on the servos, it was on a whim
[18:35:49] <ssi> sort of a "meh for this cheap I'll buy them, otherwise I don't really need them"
[18:35:54] <ssi> but now that I have the servos, I'm sorta committed
[18:35:57] <ssi> and I NEED the drives
[18:35:57] <ssi> heheh
[18:36:46] <CaptHindsight> http://www.ebay.com/itm/Parker-Nannifin-Corp-GV6-U12E-NK-Gemini-Compumotor-Servo-Drive-/281360072313
[18:37:14] <ssi> yeah that's the auction I bought from
[18:38:01] <SpeedEvil> I've got some massive servos
[18:38:06] <SpeedEvil> From old tape drives
[18:38:12] <SpeedEvil> _old_ tape drives
[18:38:16] <CaptHindsight> oh so GV6, yeah good deal
[18:39:02] <CaptHindsight> controller + drive
[18:39:26] <CaptHindsight> the drive alone version G6 are worth that
[18:39:32] <SpeedEvil> Pancake servos. I really should do something with them
[18:43:41] <ssi> CaptHindsight: what's the difference? the step/dir mode?
[18:45:58] <CaptHindsight> one is mostly just an amplifier, the controller version has some PLC functionality
[18:46:06] <ssi> gotcha
[18:46:42] <CaptHindsight> http://www.parkermotion.com/manuals/gemini/gemini_programmers_reference.pdf
[18:46:55] <ssi> yea I saw it
[18:47:06] <ssi> those drives are very nice
[18:47:13] <ssi> the regeneration bus is clever
[18:47:45] <CaptHindsight> a bargain over the new junk even at $300 used
[18:47:49] <ssi> yep
[18:48:14] <ssi> especially when you consider I paid $90 apiece for leadshine stepper drives
[18:48:22] <ssi> $110 for these geminis is a bargain
[18:49:18] <ssi> I also like the fact that they're 120/240
[18:49:23] <ssi> so I don't need a huge expensive external ps
[18:49:41] <CaptHindsight> yeah $90 + power supply
[18:49:46] <ssi> right
[18:49:52] <ssi> 3*90 + 50 for psu
[20:29:53] <ssi> printed mirror mount came out good
[20:32:15] <ssi> https://pbs.twimg.com/media/BstU5h_CQAA0Rt6.jpg:large
[20:32:24] <ssi> https://pbs.twimg.com/media/BstU8BhCcAE0Bn9.jpg:large
[20:33:33] <jdh> you seem to be pretty speedy with that
[20:33:47] <ssi> I can solidworks like a scalded dog ;)
[20:34:12] <jdh> I can draw a rectangle in a hour or so.
[20:34:20] <Tom_itx> heh
[20:34:23] <jdh> as long as it doesn't have to a given size
[20:36:45] <ssi> this is the kind of crap the 3d pritner is good for
[20:36:51] <ssi> quick design verification
[20:37:06] <ssi> if necessary I can go back and make these out of aluminum, but I don't think it'll be necessary
[20:37:59] <ssi> also I'm printing cable chain :P
[20:38:11] <jdh> geez... how long does that take?
[20:38:13] <ssi> have like 18" so far... only 8' or so to go :'(
[20:38:31] <jdh> how many sections can you print unattended?
[20:38:38] <ssi> not as many as I'd like :/
[20:38:50] <ssi> printing a plate full of small parts like that is dicey
[20:39:04] <ssi> cause if one of them fails to adhere, or comes loose during the print, it tends to wipe out the whole plate
[20:39:24] <ssi> it's really disheartening to leave a 4-8hr print unattended and come back to a spaghetti mass of useless wasted plastic
[20:39:32] <jdh> need a pallet changer for the printer
[20:39:39] <ssi> would be nice :P
[20:39:44] <ssi> I used to have a camera on it,
[20:39:58] <ssi> and while I was at work I'd remote into it, and jog the head around to knock parts off the bed
[20:40:03] <ssi> then start new prints
[20:40:08] <ssi> if you wait for the bed to cool, they pop off easy
[20:40:36] <ssi> there exists designs for a little conveyor belt of kapton-backed paper which basically gives you a pallet changer
[20:40:44] <ssi> run the belt, and the parts pop off at the edge into a bucket
[20:45:03] <Tom_itx> it doesn't have to be stuck to the heatbed?
[20:47:11] <ssi> it's stuck when its hot, but when it cools it comes off pretty easily
[20:47:15] <ssi> especially with PET tape
[20:47:19] <ssi> PET is easier to work with than kapton
[20:48:06] <Tom_itx> so you'd have to stick the next bit if the conveyor belt moved on
[20:48:19] <ssi> yeah... I imagine it's a slow process...
[20:48:32] <ssi> complete print, wait for bed to cool, roll belt, old part pops off, heat bed, begin next print
[20:48:37] <Tom_itx> hardly worth having the conveyor then
[20:48:47] <ssi> http://makerbot-blog.s3.amazonaws.com/wp-content/uploads/2010/09/ABP7_800-620x564.jpg