#linuxcnc | Logs for 2014-11-27

[02:20:11] <Deejay> moin
[02:28:13] <cathode> hi guys
[02:30:28] <cathode> i'm designing a fence for my manual bandsaw (not a cnc machine) and i thought it would be handy to have a leadscrew with a handwheel on the front to make fine adjustments. i'd probably use a pair of nuts with a light spring pushing them apart to reduce backlash. should i go with acme threaded rod, or would normal threaded rod be okay?
[02:38:20] <archivist> spring should be above forces
[02:38:51] <archivist> screw type depends on accuracy desired/expected
[02:39:49] <cathode> ok
[02:40:03] <cathode> what do you mean "spring should be above forces"?
[02:40:08] <archivist> but its a band saw and they can wear the blade if you do curved work, any fence then gets in the way
[02:40:26] <archivist> your backlash spring you mentioned
[02:40:28] <cathode> yes, the fence would be detachable
[02:43:57] <archivist> the cutting force or you pushing material against the fence
[02:45:24] <cathode> the fence would get locked down after being positioned
[02:45:54] <cathode> via a cam-action lever with most likely some hard rubber pad that would grip against the rail that the fence moves on
[02:45:56] <archivist> are you sure you need any backlash control then :)
[02:46:00] <cathode> yes
[02:46:23] <cathode> if i use threaded rod with 8 threads per inch, then 1/8th turn of the wheel means the fence moves by exactly 1/8"
[02:46:43] <cathode> so i would want the wheel to be always accurate
[02:47:05] <archivist> as long as you work from one direction that is the case without any backlash control
[02:47:09] <cathode> right
[02:47:16] <cathode> but as soon as i change direction.... :)
[02:47:21] <archivist> like on old manual lathes
[02:48:17] <cathode> i mean it doesn't have to be accurate to a ten-thousandth of an inch or anything ... but threads typically have what, maybe 0.025" of play? or more?
[02:49:02] <cathode> one of the things i want to use this for is cutting wood veneer. it would be quite handy to be able to move the wheel by 1/16th of a turn, make a cut, move the wheel 1/16th of a turn, make another cut, etc
[02:49:39] <cathode> er
[02:49:59] <cathode> sorry, if it's 8tpi then it would be 8 turns of the wheel for 1 inch so 1/8" would be 1 turn
[02:50:11] <cathode> it is late, my brain is not functioning well
[02:50:12] <archivist> I have see sawn veneer on old clocks
[02:50:53] <archivist> seen and repaired I should say
[02:53:49] <cathode> hmm
[02:54:08] <cathode> here's my project currently: http://lumberjocks.com/cathode/blog/43306
[02:54:08] <cathode> :)
[02:54:20] <archivist> make sure the leadscrew itself has end float control too
[02:55:59] <cathode> ah right
[02:56:06] <cathode> otherwise the entire leadscrew would move around
[02:56:29] <cathode> i don't have a lathe. if i bought a piece of raw threaded rod how should i make smooth parts for it to rest in a bearing?
[02:56:43] <archivist> english dial clock had a built up bezel similar to your wheel
[02:57:20] <cathode> it turned out nice
[02:57:26] <cathode> they feel extremely solid
[02:57:53] <cathode> and the hard maple rim should stand up well to the pressure of a highly tensioned bandsaw blade pressing on it
[02:58:22] <archivist> you can bolt two bearings(on the frame) and then use lock nuts on the rod to remove play
[02:58:58] <cathode> i'd have to get bearings that had the same ID as the OD of the threaded rod as measured at the peaks of the threads, right?
[02:59:20] <cathode> hmmm i might just skip this whole thing for now, lol
[02:59:40] <archivist> or make some bushing
[03:00:13] <archivist> there are plenty cheap suitable bearings
[03:02:43] <archivist> I have two aluminium plates clamping a cheap ball bearing with nuts either side of the inner for a very small amount of play on plain threaded rod
[03:03:59] <cathode> hmm ok
[03:04:33] <archivist> pic in a minute
[03:04:39] <cathode> i really need to get a small machinists lathe :)
[03:05:05] <archivist> I use a pillar drill to make the holes
[03:05:50] <cathode> pillar drill?
[03:05:52] <cathode> you mean a drill press?
[03:09:09] <archivist> yes http://www.collection.archivist.info/archive/DJCPD/PD/2014/2014_11_27_barber_colman/IMG_1855.JPG
[03:10:05] <archivist> was not sure how permanent the stuff would be so did it as fast and cheap as possible
[03:10:24] <cathode> ah
[03:10:27] <cathode> wow that's some heavy plate
[03:10:30] <cathode> is that 1"
[03:11:51] <archivist> 10mm and 1/4"
[03:12:47] <archivist> just used a hole saw
[03:12:48] <cathode> oh, what size is the rod then?
[03:13:28] <archivist> 10mm
[03:14:03] <cathode> huh. the plate looks really thick
[03:14:26] <archivist> perspective, camera is close
[03:14:48] <archivist> 10mm threaded rod is 9.86
[03:15:29] <archivist> before I added that
[03:16:17] <archivist> oops http://www.collection.archivist.info/showresult.php?prog=1&srcprog=searchv13.php&srcdata=title&Type=PD&Accn_no=9430&subject=27332
[03:19:00] <cathode> that looks like a lathe but ... it's strange
[03:19:41] <syyl_> cute gear hobber :D
[03:25:40] <archivist> http://www.collection.archivist.info/searchv13.php?searchstr=barber+colman
[03:27:00] <archivist> all the modifications can be removed so it can be put back to original, no drilling extra holes
[03:31:15] <cathode> interesting
[03:31:29] <cathode> you restored that whole machine from the rusted hunk it started as, i presume?
[03:34:28] <archivist> yes, although I did not completely take it to bits, worked around and through, to clean it internally, some rusted stuff like the slide had to come apart
[03:34:58] <cathode> cool
[03:35:33] <archivist> motor needs new sleeve bearings one day
[03:55:49] <Loetmichel> sr: sleeve bearings is te brass7bronce kind?
[03:56:08] <Loetmichel> as opposed to ball nearings?
[03:56:12] <Loetmichel> archivist
[03:56:30] * Loetmichel sorts his fingers... again
[04:01:03] <archivist_herron> yes bronze
[05:56:15] * Loetmichel just got his salary... if that notebook was aviable in 14" i would TOTALLY buy it now... black numbers on the accound cant be, thats unnatural ;-) -> http://www.itsco.de/notebooks/notebook_lenovo_thinkpad_w510_intel_core_i7-620m_vpro_2x_266ghz_4391_i26_11930_0.htm
[07:07:46] <MrSun-uthus> soo .. looks like my "ballnose" (yes cmt said it was one of those) .. was a bullnose :P
[07:11:00] <SpeedEvil> :)
[07:12:48] <SpeedEvil> This is sort-of-on-topic as I'm sort of pondering these as rails for a roof-based access platform
[07:12:54] <SpeedEvil> http://www.scaffolding-direct.co.uk/alloy-tube-48-3mm-x-6m-length-for-tube-clamps-and-scaffolding.aspx
[07:13:15] <SpeedEvil> A naive calculation leads me to the conclusion that I can bend this tube to ~2m radius without exceeding the elastic limit
[07:13:23] <SpeedEvil> how do I work out when it will buckle?
[07:13:32] <SpeedEvil> assuming no point forces on it
[07:18:23] <jthornton> what are you going to bend it with?
[07:18:58] <SpeedEvil> I'm just wondering in the general case
[07:19:17] <SpeedEvil> I'm wondering about using it to support heavy loads
[07:19:36] <SpeedEvil> though in practice - bending that much would be unlikely
[07:20:17] <jthornton> I can bend up to 3" stainless tubing with a 5" radius but it does reduce the ID a tad in the bend area
[07:20:36] <SpeedEvil> but that's likely supported with proper mandrells
[07:21:09] <jthornton> yea if you have a mandrel bender... they are very expensive
[07:21:23] <jthornton> and are usually used on thin wall tubing
[07:22:07] <SpeedEvil> I was more meaning - is there a rule of thumb to tell what's the point at which i can expect buckling - in a pure bending load with no point stress
[07:22:39] <jthornton> ah I see now
[07:24:14] <jthornton> the calculations depend on distance between supports, load, load location, and bending strength of the material
[07:24:24] <jthornton> quite complicated I think
[07:24:57] <SpeedEvil> yeah.
[07:25:11] * SpeedEvil wishes FEA was easier.
[07:25:20] <jthornton> or use my Grandpa's calculations... if it looks right it probably is
[07:25:25] <SpeedEvil> hah
[07:25:46] <SpeedEvil> yeah - that relies on having your common sense calibrated.
[07:26:15] <jthornton> yea
[07:27:22] <jthornton> happy thanksgiving
[07:36:04] <Jymmm> oink oink
[07:53:03] <archivist> SpeedEvil, they dont quote ductility
[08:02:29] <MrSun_uthus> damn the details shows a bit better when the router bit has the right form ... :P
[08:02:50] <MrSun_uthus> before it gouged away material that shouldnt be removed .. as it thought it was a ballnose when it actualy was a bull :P
[08:05:49] <SpeedEvil> archivist: ?
[08:05:56] <SpeedEvil> Oh - well - I was just assuming from the alloy
[08:06:52] <archivist> bending may snap it if not ductile enough
[08:07:19] <SpeedEvil> yeah - I was using the elastic limit of 5% I found
[09:07:44] <archivist> seems over priced http://www.ebay.co.uk/itm/Broken-Tap-Remover-/291294944622
[09:11:56] <CaptHindsight> gobble gobble
[09:13:19] <_methods> turkey lurkey
[10:03:58] <FinboySlick> archivist: Is that like a sinker-edm?
[10:04:14] <archivist> yes
[10:05:29] <archivist> there have been articles in model engineers workshop for simple ones
[10:05:39] <FinboySlick> Interesting that they'd use a drill chuck.
[10:06:15] <FinboySlick> I guess it's conductive enough but it seems a bit odd to me.
[10:06:17] <archivist> lazy way of fitting small bars to the spindle
[10:09:26] <SpeedEvil> collet takes rather longer
[10:09:40] <SpeedEvil> and if you're actually using bar-stock - and the torque is ~0 - the chuck won't wear
[10:31:38] <Tecan> <XXCoder> laser etched food tastes so nasty
[10:31:47] <Tecan> you wouldnt believe
[10:31:52] <XXCoder> lol ok
[10:32:01] <XXCoder> reading logs eh
[10:32:08] <Tecan> ?
[10:32:19] <Tecan> oh yeah from early
[10:33:03] <Tecan> should have specified in reference to the lasered pumpkin pie
[10:33:17] <XXCoder> yeah bet others are confused
[10:33:25] <XXCoder> http://geekologie.com/2014/11/tis-the-season-laser-etching-a-pumpkin-p.php
[10:33:29] <XXCoder> gonna love clcl
[10:33:42] * Tecan puts the bong on the shelf out of reach
[10:35:03] <Tecan> what would work better is lasering that gold foil
[10:35:31] <Tecan> edible gold foil for food
[10:37:18] <XXCoder> cool
[10:45:59] <Tecan> or rig a printer up with food coloring somehow and spray patterns on
[10:46:33] <XXCoder> yeah
[10:46:41] <XXCoder> or just cut patterns on food
[10:46:49] <XXCoder> assuming food is rigid enough
[10:46:55] <XXCoder> of course you need very clean tools!
[10:48:24] <Tecan> a metal stencil ontop of baked peice
[10:48:31] <Tecan> during baking
[10:49:27] <Tecan> anything but laser
[10:49:40] <XXCoder> nice idea, that
[10:49:47] <XXCoder> cnc made complex stencol
[10:55:42] <Tecan> cant believe it hasnt been done
[11:08:11] <XXCoder> Tecan: https://i.imgur.com/YW9mdGz.gif
[11:08:32] <XXCoder> Tecan: yeah sometimes it just seems olvious but not
[11:33:07] <JT-Shop> just make a krack-a-snack extruder
[13:08:00] <humble_s3a_bass> "▼"
[13:15:51] <ssi> triangle?
[13:16:23] <humble_sea_bass> just leaving irssi for weechat, stray setting
[13:34:00] <ssi> lol
[14:14:03] <PetefromTn_> Happy Thanksgiving everyone
[14:15:21] <ssi> hey pete
[14:15:42] <PetefromTn_> hey
[14:15:49] * LeelooMinai is tempted to buy this: http://www.busybeetools.com/products/SURFACE-PLATE-12IN.-X-18IN.-X-3IN..html
[14:17:11] <LeelooMinai> The question is what the shipping they will quote
[14:36:51] <cathode> hey guys. happy thanksgiving (for those in the USA)
[14:38:20] <cathode> got a question about balancing wheels (20" diameter). they're wooden spoked wheels i made for bandsaw blade to ride on. i'm thinking of using epoxy putty to add weight where necessary around the inside rim of the wheel for balance. does that seem like a logical idea?
[14:39:12] <cathode> and balancing the wheel on top of a large marble or a pool ball or something so i can see where it tips towards
[14:43:14] <SpeedEvil> don't
[14:43:18] <SpeedEvil> simply remove wood
[14:43:31] <SpeedEvil> also - spoked - why the hell
[14:44:56] <cathode> https://dl.dropboxusercontent.com/u/88948814/Shop/Bandsaw/2014-10-23%2021.17.12.jpg
[14:45:34] <SpeedEvil> What's wrong with a solid disk of MDF or ply
[14:46:14] <cathode> lots of things
[14:46:20] <SpeedEvil> you have computed the G loads on that?
[14:46:29] <cathode> no
[14:46:40] <cathode> but the spokes are hickory
[14:46:59] <cathode> one of the stiffest and highest strength woods out there
[14:47:03] <renesis> why are we back in the 1700s
[14:47:05] <cathode> the rim is hard maple
[14:47:29] <SpeedEvil> cathode: yes - and MDF or ply is much much more dimensionally stable.
[14:47:47] <SpeedEvil> Neglecting that.
[14:47:50] <cathode> mmmk then use that for your own project..
[14:47:53] <SpeedEvil> Have you trued the outside of the wheel
[14:47:59] <cathode> roughly, yes
[14:48:07] <cathode> it's a little oversize right now
[14:49:44] <_methods> you can add inserts too to add weight
[14:49:50] <_methods> instead of removing material
[14:50:28] <cathode> _methods - yeah i was asking about using epoxy putty
[14:50:40] <cathode> and sticking small bits of it around the inside rim until it's balanced
[14:50:55] <cathode> the whole thing is going to have paint over the top
[14:51:23] <_methods> yeah
[14:55:43] <cathode> ok thanks
[14:55:59] * LeelooMinai sighs
[14:56:23] <LeelooMinai> My local place just quoted me a bargain price of $250 + tax for a gallon of epoxy
[14:56:37] <ssi> what kind of epoxy?
[14:56:40] <SpeedEvil> LeelooMinai: At that price, I will ship you some.
[14:56:44] <ssi> seriously
[14:57:00] <LeelooMinai> Just epoxy resin
[14:57:18] <LeelooMinai> I thought I could save on shipping and make my sister pick it locally:)
[14:57:24] <ssi> I pay about $100 us for west epoxy
[14:57:31] <ssi> and anther $20 or so for the hardener
[14:57:45] <LeelooMinai> ssi: A gallon?
[14:57:54] <ssi> yeah
[14:58:10] <cathode> that seems really high
[14:58:19] <cathode> but i dont buy epoxy much so...
[14:58:33] <ssi> 1.2 gal epoxy kit at spruce is $137.95
[14:58:37] <ssi> but I think I get around 15% discount on that
[14:58:43] <ssi> http://www.aircraftspruce.com/catalog/cmpages/westepoxy.php?clickkey=279624
[14:58:45] <LeelooMinai> Well, I searched all places online - that's not what I can see. Crazy places like Lee Valley tools sell a litre for $80 or so:)
[14:58:58] <cathode> http://www.ebay.com/itm/MARINE-GRADE-EPOXY-RESIN-1-GALLON-KIT-UV-RESISTANT-CLEAR-NON-TOXIC-/230732090356
[14:59:02] <ssi> epoxy's not cheap, but it's not $250/gal either
[14:59:05] <ssi> unless its something exotic
[14:59:08] <LeelooMinai> Sometimes living in Canada sucks
[14:59:37] <cathode> oh my bad, that's a surface treatment
[14:59:40] <cathode> not an adhesive
[15:01:12] <LeelooMinai> I am looking for 100% solids. I think all those surface/garage/floor treatments have a lot of stuff that evaporates and makes the resin shrink
[15:01:48] <ssi> http://www.ebay.com/itm/EPOXY-RESIN-BOAT-BUILDING-MARINE-GRADE-HiIGH-STRENGHT-FIBERGLASSING-1-GAL-KIT/221376042360?_trksid=p2047675.c100010.m2109&_trkparms=aid%3D555012%26algo%3DPW.MBE%26ao%3D1%26asc%3D27538%26meid%3D29ad3954176f4dc695d4dfc1966ce206%26pid%3D100010%26prg%3D11353%26rk%3D4%26rkt%3D24%26mehot%3Dpp%26sd%3D230732090356
[15:01:50] <LeelooMinai> But makes it level better I presume
[15:02:27] <LeelooMinai> ssi: And they will make customs fee another $100:)
[15:02:43] <ssi> but it's in ontario! ;)
[15:03:44] <LeelooMinai> lol, in California - I guess there's a city called Ontario, wierd
[15:04:20] <DaViruz> how useful would a 25W laser be for cutting thin plywood (1/8" to 1/4") and acrylic of rougly the same dimension?
[15:04:35] <DaViruz> a quality laser cutter in case that matters.
[15:04:35] <ssi> 1/4" might be a bit dicey
[15:04:46] <ssi> 40W cuts 1/4" pretty well
[15:04:46] <LeelooMinai> DaViruz: From yesterday - for acrylic you need specific wavelength
[15:04:47] <DaViruz> i suspect it does with regards to focus and such
[15:05:02] <DaViruz> this machine has been used for acrylic specifically
[15:05:05] <DaViruz> and 1/8" specifically
[15:05:07] <ssi> CO2 lasers cut acrylic beautifully
[15:05:23] <ssi> 25W likely will cut 1/4" acrylic ok, but you'll need the right lens
[15:05:26] <LeelooMinai> DaViruz: For example blue laser will not cut it
[15:05:34] <DaViruz> this is a CO2 laser.
[15:05:41] <LeelooMinai> A, ok, then it will work
[15:05:42] <DaViruz> i'm also contemplating a laser tube upgrade
[15:06:26] <DaViruz> http://laserprouk.com/laser-engraving-machines-mercury.html
[15:06:30] <DaViruz> it's one of these deals
[15:06:54] <DaViruz> it seems rather nice (to my clueless eyes) :)
[15:06:59] <LeelooMinai> Seems like a cheap hobby budget machine to me... or not:)
[15:07:35] <DaViruz> i'm pretty reluctant to get one of those chinese machines, though they seem to work pretty well based on various youtube reviewers
[15:08:24] <LeelooMinai> ssi is an expert on laser cutters - including burning half of the house:)
[15:08:29] <DaViruz> finding a non-chinese laser cutter in sweden that's somewhat affordable doesn't happen too often
[15:08:40] <DaViruz> else there's this one.. http://www.blocket.se/dalarna/Laserskarmaskin_Mazak_Turbo_X_48_1KW_57435265.htm?ca=9&w=3
[15:08:41] <ssi> yea I have a pretty good idea of what works and what doesn't :P
[15:09:00] <DaViruz> it's not far from here either, walking distance.. :)
[15:09:07] <DaViruz> though $60k is a bit hefty
[15:09:25] <LeelooMinai> That would not fit in my room, so I have to pass
[15:09:45] <DaViruz> i'm not too fond of the oxygen consumption either
[15:10:02] <JT-Shop> dang UPS waits till I ship something to Turkey to give me the preferred rate
[15:10:32] <DaViruz> ssi: what's the right lens?
[15:10:33] <_methods> better late than never?
[15:10:41] <DaViruz> (for 25W CO2 1/4" acrylic)
[15:10:55] <JT-Shop> yea, I think they just got competitive with USPS now
[15:11:30] <DaViruz> ups mail innovations is pretty cool. i can get a moderate size box from the us to sweden for $1.6 which is just ridiculous.
[15:11:37] <DaViruz> i can't even send a domestic postcard for that
[15:12:01] <_methods> ugh i need lemon fanta
[15:12:10] <ssi> DaViruz: I'd probably start with a 2" lens, but you may need longer, like a 3"
[15:12:13] <_methods> need to get it shipped from europe
[15:12:22] <DaViruz> oh focal distance
[15:12:42] <DaViruz> is there a benefit to shorter?
[15:12:50] <_methods> smaller hip
[15:12:51] <JT-Shop> last box I shipped to turkey cost me $125 for 4 lbs
[15:12:56] <_methods> means you can cut faster
[15:13:02] <DaViruz> hip?
[15:13:03] <CaptHindsight> DaViruz: from Denmark to Sweden?
[15:13:13] <DaViruz> CaptHindsight: USA to sweden
[15:13:19] <_methods> yes the beam hip or waist
[15:13:32] <DaViruz> i'll have to research that :)
[15:13:41] <_methods> the focal area that cuts best
[15:13:44] <DaViruz> it seems to ship with a 2" lens
[15:13:52] <_methods> the optimal focal area
[15:13:53] <ssi> shorter means smaller, hotter spot
[15:13:56] <DaViruz> with a bunch of others available as options
[15:14:02] <ssi> longer means wider depth of field
[15:14:14] <DaViruz> oh.
[15:14:43] <DaViruz> how about plywood 1/4" plywood?
[15:14:58] <DaViruz> that's probably more important than acrylic
[15:15:40] <ssi> plywood is harder
[15:15:52] <_methods> an 80w laser should cut that fine i think
[15:15:56] <ssi> my 40W laser could cut 1/4" plywood reasonably well, but only certain types
[15:15:58] <_methods> i don't know much about hobby lasers
[15:16:09] <ssi> sandeply cut well, but oak plywood didn't
[15:16:14] <ssi> the more layers, the harder it is to cut
[15:16:15] <ssi> cause of the glue
[15:16:30] <DaViruz> i see
[15:17:06] <LeelooMinai> I wonder if I can cut 0.125" stainless sheet at home
[15:17:17] <ssi> with what?
[15:17:33] <ssi> almost certainly not with a laser
[15:17:35] <LeelooMinai> The only thing I have that could touch that is angle grinder and those cut discs
[15:17:49] <LeelooMinai> Not sure if that would work well (?)
[15:17:58] <DaViruz> that'll work fine
[15:18:20] <LeelooMinai> May be a bit scary experience
[15:18:49] <DaViruz> it creates a lot of dust
[15:19:23] <DaViruz> the thinner the disc the easier the cut, and it generates less dust
[15:19:43] <LeelooMinai> Too bad it's cold now outside. I guess I could wear a dust mask
[15:20:30] <LeelooMinai> How can I measure how flat a sheet like that is?
[15:21:09] <ssi> surface plate
[15:21:13] <SpeedEvil> LeelooMinai: surface plate
[15:21:15] <ssi> laser interferometry
[15:21:23] <SpeedEvil> profilometer
[15:21:26] <ssi> clever use of a decent straightedge
[15:21:28] <SpeedEvil> trained ducks
[15:21:38] <LeelooMinai> Well, I don't have a surface plate. Maybe I will have one soon, but it will be smaller then the plate I cut...
[15:21:50] <SpeedEvil> you can cut 3mm stainless with a decent sharp hacksaw
[15:21:54] <ssi> how flat do you need it to be?
[15:22:21] <LeelooMinai> I cannot really make it flat - I am just curious how flat it is by itself
[15:22:23] <SpeedEvil> LeelooMinai: if it's cold outside, you need a thicker disk
[15:22:30] <SpeedEvil> LeelooMinai: and a bigger angle grinder
[15:22:32] <SpeedEvil> more sparks
[15:23:07] <zeeshan|2> fak
[15:23:10] <SpeedEvil> A 3mm sheet will not meaningfully stay flat over any significant distance
[15:23:13] <zeeshan|2> this modbus programming taking forever
[15:23:29] <LeelooMinai> BTW, I found a grout that costs $33 per 1.1L - maybe I can use it for my epoxy/granite table
[15:23:43] <LeelooMinai> That's the only thing that gives me a hope of making it for now
[15:24:28] <LeelooMinai> http://www.homedepot.ca/product/ceg-lite-100-solids-commercial-epoxy-grout-150-382-bone-11-l/983083
[15:24:43] <SpeedEvil> LeelooMinai: what sized object do you want
[15:25:01] <LeelooMinai> It seems to be 100% solids epoxy mixed with something - probably something like very fine sand, so should work?
[15:25:09] <SpeedEvil> seems likely
[15:25:34] <LeelooMinai> I read the datashhet and they say that typical shrinkage is 0.08% and I think 0.2% max
[15:25:44] <LeelooMinai> So seems perfect
[15:26:00] <LeelooMinai> SpeedEvil: 21" by 21" by maybe 1.5"
[15:26:14] <LeelooMinai> Not sure if one box would be enough - maybe
[15:26:28] <SpeedEvil> At that size, an actual bit of rock might be simpler
[15:26:45] <LeelooMinai> E, what?
[15:26:49] <LeelooMinai> What do you mean simpler?
[15:26:56] <SpeedEvil> cheaper, easier
[15:27:14] <LeelooMinai> Bit or rock? What is that? :)
[15:27:18] <LeelooMinai> of*
[15:27:31] <SpeedEvil> granite
[15:27:49] <LeelooMinai> And how will I make holes or slots in that?
[15:27:55] <LeelooMinai> A lot of them
[15:27:58] <SpeedEvil> angle grinder
[15:28:00] <pcw_home> slowly
[15:28:11] <LeelooMinai> That does not sound simpler:)
[15:28:29] <DaViruz> chisel and hammer!
[15:29:04] <SpeedEvil> Simply remove anything that doesn't look like a CNC base
[15:29:10] <ssi> hahah
[15:29:47] <DaViruz> remember to do it simply.
[15:30:38] <LeelooMinai> You are all spoiled because you already have some expensive/big machines that can help you. YOu would not sing that nice if all you had were simple tools and no money:p
[15:31:15] <ssi> we all started somewheer
[15:31:20] <SpeedEvil> LeelooMinai: I'm on a low, fixed income, and have fuck-all in proper tooling
[15:31:24] <zeeshan|2> we also didnt spend a week
[15:31:28] <zeeshan|2> trying to figure out what to use for a table
[15:31:39] * zeeshan|2 hides
[15:31:53] <LeelooMinai> zeeshan|2: My point exactly - you did not have to:)
[15:32:11] <zeeshan|2> call up b&d steel in burlington and get yourself a mic6 plate 1/2
[15:32:19] <zeeshan|2> for 120$ 24x24x.5
[15:32:20] <zeeshan|2> enuf
[15:33:03] <ssi> thing is, for less money than you've poured into this machine already, you could have bought a decent cheap used mill
[15:33:16] <zeeshan|2> ssi mean
[15:33:22] <LeelooMinai> I don't want a mill. I want a cnc platform.
[15:33:28] <DaViruz> what's the fun in that
[15:33:32] <zeeshan|2> wut
[15:33:33] <ssi> if you had a mill, you could make your cnc machine
[15:33:34] <zeeshan|2> you have a mill
[15:33:46] <pfred1> I have a mill
[15:33:50] <zeeshan|2> you dont think you can mount a laser cutter nozzle on a mill? :P
[15:34:02] <pfred1> not easily no
[15:34:04] <LeelooMinai> zeeshan|2: I don't see why - a diode one
[15:34:26] <zeeshan|2> just tape it to the spindle
[15:34:49] <LeelooMinai> zeeshan|2: You think only spindles can be attached to z-bed?
[15:35:14] <zeeshan|2> LeelooMinai: im not gonna waste my time :)
[15:35:16] <zeeshan|2> do what you want
[15:35:19] <LeelooMinai> imho anything can be
[15:35:20] <zeeshan|2> ssi hi
[15:35:26] <zeeshan|2> did you get your new laser parts? :D
[15:35:37] <ssi> not yet
[15:35:48] <zeeshan|2> i hope youre going to build it bigger and better!
[15:35:49] <ssi> have other priorities honestly
[15:35:51] <zeeshan|2> so you can cut stianless sheet
[15:35:51] <zeeshan|2> :D
[15:35:54] <ssi> but yes eventually
[15:36:28] <LeelooMinai> Like fireproof walls? :)
[15:36:52] * SpeedEvil is seriously considering a large CNC platform built from wood :)
[15:37:46] <LeelooMinai> SpeedEvil: Do you want to join "mr dried bubble gum" guy?
[15:37:48] <pfred1> SpeedEvil I have a small one built from wood and I am in the process of bolting more steel to it now
[15:38:39] <SpeedEvil> I should at some point in the near future work out cutting forces.
[15:38:55] <pfred1> there are online calculators
[15:39:04] <SpeedEvil> yeah
[15:39:05] <ssi> just make zeeshan do it
[15:39:12] <LeelooMinai> SpeedEvil: I hope you are not going to duplicate this design: https://www.youtube.com/watch?v=gKBp3YJEaFQ
[15:39:14] <zeeshan|2> haha ssi
[15:39:17] <zeeshan|2> fak you
[15:39:19] <zeeshan|2> i aint no calculator
[15:39:24] <ssi> you love doing that stuff :)
[15:39:43] <SpeedEvil> LeelooMinai: I want to be able to cut more than polystyrene
[15:40:08] <SpeedEvil> LeelooMinai: I'm aiming at ~100kgf causing .1mm deflection
[15:40:09] <ssi> zeeshan|2: I'm gonna build a 4x8 router before I do another laser
[15:40:26] <zeeshan|2> hm
[15:40:31] <LeelooMinai> SpeedEvil: You will use ironwood? :)
[15:40:39] <SpeedEvil> LeelooMinai: over a 2.4*4.8m bed
[15:40:40] <SpeedEvil> err
[15:40:41] <zeeshan|2> thats huge
[15:40:42] <SpeedEvil> 1.2*2.4
[15:40:47] <SpeedEvil> which is still huge
[15:40:54] <SpeedEvil> 1.3*2.5 actually
[15:41:01] <zeeshan|2> speedevil
[15:41:05] <zeeshan|2> can you talk in human units please
[15:41:07] * zeeshan|2 hides
[15:41:08] <zeeshan|2> :-)
[15:41:13] <ssi> lol
[15:41:18] <SpeedEvil> LeelooMinai: no, plywood, properly supported
[15:41:21] <LeelooMinai> He is talking in human units...
[15:41:30] <zeeshan|2> yes
[15:41:32] <zeeshan|2> the units of kg
[15:41:38] <zeeshan|2> that is a massive mass
[15:41:39] <zeeshan|2> vs a lb
[15:41:42] <zeeshan|2> fak you!
[15:42:04] <ssi> what are you on about
[15:42:08] <zeeshan|2> trolling
[15:42:14] <ssi> stahp
[15:42:29] <LeelooMinai> I would be very happy if all imperial units were just gone one sunny day:)
[15:42:36] <zeeshan|2> sucks for you
[15:42:38] <zeeshan|2> we're in canada
[15:42:41] <zeeshan|2> and its not changing anytime soon
[15:42:44] <zeeshan|2> i love my imperial units
[15:42:48] <zeeshan|2> when it comes to machining :P
[15:43:01] <LeelooMinai> Not sure why...
[15:43:09] <SpeedEvil> zeeshan|2: 1000N then
[15:43:09] <zeeshan|2> because everything around you is in it?
[15:43:15] <zeeshan|2> go order yourself some meter by meter plate.
[15:43:58] <LeelooMinai> zeeshan|2: Well, that's not a good reason - that's just unfortunate state of things:)
[15:44:09] <zeeshan|2> yea it's too far gone to convert over now
[15:44:17] <zeeshan|2> i always do my calculations in imperial
[15:44:23] <zeeshan|2> its the same
[15:44:40] <ssi> you know what will be super productive?
[15:44:41] <ssi> whining about units
[15:44:43] <LeelooMinai> I end up using both
[15:44:45] <zeeshan|2> :D
[15:44:57] <zeeshan|2> ssi i ask the students how big 0.04 mm is +/-
[15:45:02] <zeeshan|2> they have no clue
[15:45:06] * SpeedEvil sighs.
[15:45:11] <SpeedEvil> .001"
[15:45:13] <zeeshan|2> but if i ask how big 0.001" +/-
[15:45:15] <zeeshan|2> they have a clue :P
[15:45:43] <LeelooMinai> The reverse would happen in other small parts of the world - like Europe or Asia:)
[15:45:50] * SpeedEvil wonders how many people use 186/300 to compare km and miles
[15:45:53] <zeeshan|2> yep
[15:45:56] <zeeshan|2> but we live in north america
[15:46:03] <zeeshan|2> not europe or asia :)
[15:46:15] <LeelooMinai> Yes, but I order most stuff from China and they are not imperial
[15:46:35] <DaViruz> i use 6/10 to compare miles and km, because i remember the 60/100 radio from speedometers :P
[15:46:39] <pfred1> I try to stay away from Chinese goods myself
[15:47:07] <LeelooMinai> If I was rich maybe I would stay away too - but that's not realistic for a poor hobbyist
[15:47:25] <pfred1> I was working with a Chinese motor here and the rotor induces a current into the motor's housing that would light up a light bulb to ground
[15:47:39] <zeeshan|2> rofl
[15:47:44] <LeelooMinai> Maybe that's a feature:)
[15:47:48] <pfred1> I thought it was pretty funny too
[15:47:53] <zeeshan|2> nice
[15:47:54] <ssi> pfred1: chinese electrics are OFTEN unsafe as hell wrt groundis
[15:48:19] <pfred1> needless to say once I saw that I quickly retired that motor some fomething made in illinois
[15:48:53] <LeelooMinai> You just have to do more research - you can still buy things that will work well.
[15:49:18] <LeelooMinai> Sometimes open stuff and see inside if it looks sane.
[15:49:20] <pfred1> made in USA or stay away
[15:49:47] <zeeshan|2> heY!
[15:49:54] <zeeshan|2> made in canada made in germany made in europe
[15:49:56] <zeeshan|2> ftw
[15:49:56] <pfred1> I had the motor all opened up it looked fine
[15:49:59] <ssi> zeeshan|2: canada is part of usa ;)
[15:50:04] <zeeshan|2> lol
[15:50:09] <pfred1> there was no short to the housing
[15:50:22] <zeeshan|2> bbl
[15:50:29] <zeeshan|2> i wonder when i get back if LeelooMinai will have a table
[15:50:47] <LeelooMinai> Don't worry - eventually I will
[15:50:55] <zeeshan|2> if not i might have to send her the piece of aluminum
[15:50:59] <zeeshan|2> so i dont go crazy
[15:51:06] <zeeshan|2> bbl :D
[15:51:07] <LeelooMinai> I can always just buy 30kg of concrete for $10:)
[15:51:49] <pfred1> my personal best is pouring 540 cubic yards of concrete in a day
[15:51:57] <LeelooMinai> Just that my confidence level would not be too high with that
[15:52:24] <pfred1> we were burning better than $30,000 a minute on that job
[15:53:13] <LeelooMinai> I thought concrete is cheap
[15:53:21] <pfred1> well labor ain't
[15:53:36] <pfred1> and 540 cuyd of concrete ain't too cheap either
[15:53:38] <LeelooMinai> $30 per minute? :)
[15:53:46] <pfred1> no $30,000
[15:53:46] <LeelooMinai> That's some highe payed workers
[15:53:53] <ssi> concrete is NOT cheap
[15:54:06] <ssi> I've been looking into building a hangar, and the concrete costs as much as the building
[15:54:49] <LeelooMinai> Well, cheap in comparison I guess to other materials, like steel, aluminum, etc.
[15:55:11] <pfred1> trouble with concrete is it doesn't wait
[15:55:24] <LeelooMinai> And cracks? :)
[15:55:28] <ssi> lawd
[15:55:33] <ssi> 25,000 60# bags of concrete
[15:55:38] <ssi> for the slab I want
[15:55:46] <pfred1> oh we used trucks
[15:56:00] <ssi> well yeah
[15:56:04] <LeelooMinai> ssi: What are you building an olimpic pool? :)(
[15:56:05] <ssi> that's a million and a half pounds of concrete
[15:56:08] <ssi> how does that even happen
[15:56:26] <DaViruz> what thickness?
[15:56:28] <pfred1> for us it happened in a warehouse floor
[15:56:31] <ssi> 6"
[15:56:35] <ssi> 140x160'
[15:56:38] <pfred1> 12" thick
[15:56:59] <DaViruz> that number seems unreasonably large
[15:57:59] <DaViruz> that would be like what, 30 truckloads?
[15:58:21] <pfred1> a truck can carry 10 cuyd but they usually only haul 9
[15:58:35] <ssi> it's 414 yd
[15:58:45] <ssi> so 40-50 truckloads :/
[15:58:47] <pfred1> that's a huge pour
[15:58:49] <PetefromTn_> Damn that was some good Turkey!! and stuffing, and potatoes, and candied Yams, and hot fresh rolls, and...and....and....
[15:58:57] <_methods> amen
[15:59:04] <_methods> did my turkey i the egg
[15:59:06] <PetefromTn_> I am gonna sit here and rub my belly for about an hour
[15:59:08] <_methods> it was a hit
[15:59:16] <PetefromTn_> nice
[15:59:25] <PetefromTn_> Gotta percolate for awhile
[15:59:26] <_methods> https://www.dropbox.com/s/flll1pk6txtsacs/2014-11-27%2010.50.42.jpg?dl=0
[15:59:50] <_methods> brined for 48 hours then injected with hot sauce and butter
[15:59:51] <PetefromTn_> so I can make room for the NY style homemade cheesecake and Pumpkin pie!! Oh and the fresh Italian cookies!!
[16:00:10] <PetefromTn_> Woohoo the green egg strikes again!!
[16:00:14] <_methods> yes yes
[16:00:21] <PetefromTn_> yes yes yes
[16:00:45] <DaViruz> well i guess 160' is quite a bit
[16:01:11] <PetefromTn_> I swear my wife makes some amazing cheesecake. I TRY to not eat the whole damn thing but who am I kiddin'
[16:01:20] <PetefromTn_> ;)
[16:01:58] <ssi> we're doing dinner in the egg too
[16:02:01] <ssi> but ours is ribs
[16:02:03] <ssi> mmmm ribs
[16:02:27] <LeelooMinai> Or she added some hallucinogenic substances to them
[16:04:20] <PetefromTn_> whoo maybe but it works... I might take seconds!!
[16:05:07] <_methods> ssi you got egg too?
[16:05:12] <ssi> my roommate does
[16:05:15] <_methods> sweet
[16:05:30] <_methods> i did ribs i it a couple weeks ago
[16:05:45] <_methods> i need to make one of those rib racks for it
[16:07:10] <ssi> yea he has one
[16:07:27] <LeelooMinai> Hmm, maybe for those flatness measurements I should invest in "straight edge" that is really straight
[16:09:18] <PetefromTn_> that would cost more than the plate LOL
[16:09:30] <LeelooMinai> Really?
[16:09:48] <LeelooMinai> Isn't it just a piece of metal ground flat?
[16:09:51] <PetefromTn_> well I guess that depends on your definition of flat
[16:10:11] <LeelooMinai> Not crazy-flat - close to B grade surface plate I guess
[16:10:15] <ssi> you can get a 24" aluminum straightedge for $50 or so
[16:10:37] <ssi> $31 actually
[16:10:44] <ssi> but those possibly aren't flat enough for your purposes
[16:10:49] <ssi> 0.003"
[16:11:12] <ssi> their steel ones are 0.001", and $51 for 24"
[16:12:21] <LeelooMinai> Maybe I should concentrate on woodworking - would be much cheaper
[16:12:32] <ssi> starretts are 0.0002"/foot, 24" is about $85
[16:12:33] <pfred1> that's what I'm doing
[16:13:20] <pfred1> I'm hoping the third time I put my machine together over here is going to be the charm
[16:24:15] <Deejay> gn8
[16:25:48] <pfred1> http://www.realitytvworld.com/news/creed-singer-scott-stapp-blames-obama-for-financial-woes--50134642.php
[16:25:55] <pfred1> Thanks Obama!
[16:27:08] <cathode> woot. https://www.dropbox.com/s/olpkt0z9spxucx1/2014-11-27%2013.59.56.jpg?dl=0
[16:27:57] <PetefromTn_> Awesome!!.....er.....whattahell is it?
[16:28:13] <pfred1> w3hoops wrong channel
[16:28:17] <pfred1> heh
[16:28:33] <cathode> it lifts the upper bandsaw wheel to apply tension to the blade
[16:28:48] <cathode> with two pneumatic cylinders, instead of a steel spring
[16:29:16] <cathode> the springs can't apply much force and they get mushy after a while because of vibration + fatigue and stuff.
[16:29:44] <PetefromTn_> hm every bandsaw I ever saw used a threaded screw to tension the wheels...
[16:29:53] <cathode> yes, a threaded screw with a spring
[16:30:09] <pfred1> that's how mine works
[16:30:10] <cathode> if you don't have something to absorb shocks, you can snap a blade if a chip gets caught between the wheel and the blade
[16:30:47] <PetefromTn_> sure
[16:31:02] <cathode> larger industrial bandsaws (like 36"+) use either pneumatics or hydraulics
[16:31:22] <cathode> anyway, i built this one from scratch, entirely of my own design. so it uses air cylinders :P
[16:32:02] <cathode> i tapped threads directly into the wood to install that whole thing and then used some acetone-thinned epoxy to strengthen the wood fibers around the threads. seems to work great
[16:32:39] <cathode> i did a test with a 1/2-13 bolt and tightened it with an impact driver and it crushed the wood fibers around the head of the bolt but none of the threads gave way
[17:20:09] <taiden> hey all
[17:20:21] <taiden> got the new machine running. 900 ipm rapids
[17:20:22] <taiden> :)
[17:20:41] <Tom_itx> that'll wake ya up
[17:20:52] <taiden> problem is when I feed linuxcnc a toolpath it likes to run at about 50 ipm
[17:21:19] <taiden> i think it's an issue of the toolpath being made up of a ton of short lines and lookahead wont allow it to pick up speed
[17:21:34] <Tom_itx> what ver lcnc?
[17:21:40] <Tom_itx> 2.7 is supposed to fix that
[17:21:42] <taiden> 2.6.4
[17:21:52] <Tom_itx> the new TP is in 2.7 i believe
[17:22:17] <Tom_itx> may not yet be released for realtime though
[17:22:24] <taiden> what's TP?
[17:22:30] <Tom_itx> trajectory planner
[17:22:34] <taiden> oh I see
[17:22:56] <taiden> so what are my options?
[17:23:02] <Tom_itx> also from what i gather if you have more than X Y Z it falls back to the old one
[17:23:14] <Tom_itx> go slow or wait?
[17:23:24] <Tom_itx> or compile it and give it a try
[17:23:53] <taiden> well, I spent a decent amount of money on getting a machine that would actually run 900 ipm well
[17:24:04] <taiden> so going slow and waiting aren't really options
[17:24:18] <taiden> do you guys know if mach3's trajectory planning is better?
[17:24:23] <Tom_itx> ask the developers how it's coming along
[17:24:24] <taiden> i've never actually used it
[17:24:34] <Tom_itx> i seriously doubt it
[17:26:29] <PetefromTn_> sounds like your toolpath maybe needs work... sometimes the way things are drawn or the way your post processor is setup it will do that from what I gather
[17:26:31] <Tom_itx> read today's log in the developer channel
[17:26:41] <Tom_itx> they were talking about it
[17:27:07] <Tom_itx> a good planner should eat code for lunch
[17:27:33] <Tom_itx> from what i hear the new one is a big improvement
[17:31:37] <Tom_itx> http://buildbot.linuxcnc.org/
[17:31:42] <Tom_itx> if you wanna try it
[17:31:46] <Tom_itx> i think that's the link
[17:33:52] <taiden> are there guidelines for creating toolpaths that work well with linuxcnc's trajectory planner?
[17:34:04] <Tom_itx> and yes you could lessen the precision on your toolpath and improve the line segment count
[17:34:31] <Tom_itx> that goes for just about any control
[17:34:51] <taiden> reduce line segment count
[17:34:57] <Tom_itx> yes
[17:35:05] <taiden> that should be the main goal im guessing
[17:35:14] <taiden> does linuxcnc 2.6 tp only read out a certain number of lines?
[17:35:16] <taiden> is that the issue?
[17:35:32] <Tom_itx> i'm not sure but i believe the lookahead has been the issue with it
[17:36:09] <PetefromTn_> honestly if your machine is capable of 900 IPM and you are only getting 50 I would say you have issues other than the capabilites of linuxCNC's trajectory planner.
[17:37:02] <Tom_itx> probably so
[17:39:00] <taiden> with a simple g1 f900 it's no problem
[17:39:09] <taiden> this happens when i use mastercam generated toolpath for surface contouring
[17:39:14] <Tom_itx> it's only eating one line of code though
[17:39:18] <Tom_itx> not 2000
[17:39:22] <taiden> this is why i think it's TP
[17:39:31] <Tom_itx> break that same move into 2000 and see what happens
[17:39:41] <taiden> yeah
[17:39:41] <PetefromTn_> your accell rates are also a factor for the axes
[17:39:50] <taiden> i'm doing 45 in/s/s
[17:39:51] <Tom_itx> are you using mesa hardware?
[17:39:56] <taiden> software stepping
[17:40:07] <Tom_itx> well that's a major part of it
[17:40:15] <taiden> i dont see why
[17:40:38] <Tom_itx> because the pc has to do more work?
[17:40:50] <Tom_itx> work takes time
[17:40:59] <Tom_itx> let other hardware help with the workload
[17:41:37] <taiden> i assumed that generating stepper signals wasn't resource intensive
[17:41:40] <Tom_itx> i have a crappy little mill but when i switched over to better drivers and mesa cards my feeds improved from 20 to 80
[17:41:57] <taiden> and that had nothing to do with step frequency?
[17:41:57] <Tom_itx> talk to pete about it
[17:42:13] <taiden> my software step frequency allows 900 ipm movement
[17:42:20] <Tom_itx> he's probably got a turkey hangover though
[17:42:25] <taiden> i know I do!
[17:43:17] <Tom_itx> i can't give specifics because i didn't write the software or build the hardware but i think i'm on the right track
[17:44:37] <Tom_itx> what sort of machine is it?
[17:45:35] <PetefromTn_> I know exactly jack squat about stepper motors but I agree with Tom that Mesa cards handling things allows you much higher performance especially the PCI cards apparently. I like the 5i25/7i77 setup on my Cincinatti and my new CNC lathe will be getting them at some point here soon as well.
[17:47:14] <Tom_itx> well i think his newer boards offer better performance simply due to the higher frequencies the fpga runs at
[17:51:26] <taiden> i had assumed that faster linear motion was a result of higher step frequency provided by the mesa cards
[17:51:42] <taiden> not any increase in available processing resources to improve lookahead
[17:52:03] <Tom_itx> both?
[17:52:08] <taiden> in any case, my tolerances in post were 0.0001" across the board
[17:52:14] <taiden> just changed it to 0.001" and will test
[17:52:26] <jdh> what screw pitch/etc?
[17:52:27] <Tom_itx> or even .0005
[17:52:41] <taiden> 20mm true lead X & Y, 10mm true lead Z
[17:52:48] <taiden> step frequency around 40khz
[17:52:53] <Tom_itx> must be pretty high if he's getting 900ipm
[17:53:22] <Tom_itx> taiden, compare your code size
[17:53:33] <taiden> great idea!
[17:54:07] <Tom_itx> i know when we were cutting surfaces we'd go thru thousands of lines a min
[17:56:19] <Connor> maybe it was 900 mm per min
[17:56:40] <Tom_itx> maybe, that's not what i read
[17:57:13] <Tom_itx> i know i'd be happy with a machine that did 900 ipm rapids
[17:57:15] <jdh> seems awfully high for a stepper and any kind of normal screw
[17:57:20] <Tom_itx> agreed
[17:57:31] <Connor> I've seen very few systems with steppers be able to pull off 900ipm
[17:57:31] <Tom_itx> that's why i suggested a high pitch screw
[17:57:39] <jdh> low pitch screw
[17:57:43] <Tom_itx> that
[17:58:08] <Tom_itx> and if it's not a mill there's little load on the table
[17:58:09] <Connor> I have a 10mm pitch on my router.. I can only do around 200IPM
[17:58:10] <jdh> low pitch screw on a 1.8degree stepper is low ers
[17:58:45] <Tom_itx> mine is 20 tpi screw
[17:58:58] <jdh> connor: limited by step speed? or just physical?
[17:59:01] <Tom_itx> i don't expect too much from it
[17:59:11] <Connor> limited by stepper voltage.
[17:59:15] <Connor> only 24v
[17:59:23] <Tom_itx> double it
[17:59:33] <taiden> 167kb to 164 kb lol
[17:59:35] <Tom_itx> makes life better
[17:59:38] <Connor> Using cheap 4 axis ebay stpper driver..
[17:59:54] <taiden> what does "low ers" mean
[17:59:55] <Connor> only good for up to 30v I think.
[17:59:57] <jdh> res
[18:00:01] <Tom_itx> oh
[18:00:16] <Tom_itx> maybe 24v is best for them then
[18:00:23] <Connor> low resolution
[18:00:25] <jdh> 1 rev = 20mm?
[18:00:28] <pfred1> I went from 24V to about 28V with my TB6560s and it made a difference
[18:00:44] <jdh> pfred1: did it change the whine?
[18:00:53] <Tom_itx> i went from 24 to 48 and noticed big improvements
[18:01:01] <pfred1> not that i noticed
[18:01:11] <Connor> g540 + 48v would be best..those steppers have high inductance too.. really a bad choice.. was first ones I ever purchased.. didn't no jack about steppers and stuff
[18:01:14] <pfred1> the whine usually means inductance in the sense current path
[18:01:36] <jdh> don't g540's go up to 60v?
[18:01:38] <Tom_itx> i'm not pushing my steppers as hard as i could be either
[18:01:49] <Connor> I changed out the caps on my TB6560's to reduce the high pitch whine..
[18:01:50] <pfred1> Tom_itx feed 48V into a TB6560 and you have an explosive device
[18:01:53] <Tom_itx> 2.5 A iirc and will take 4 i think
[18:02:00] <Tom_itx> heh
[18:02:16] <Tom_itx> i got the good geckos though
[18:02:18] <pfred1> there is an upgrade IC to it though
[18:02:30] <Tom_itx> 80v iirc
[18:02:38] <Connor> Happy Thanksgiving those of you who celebrate it.. those who don't, you don't know what your missing. :)
[18:02:48] <jdh> gluttony? :)
[18:02:50] <Tom_itx> or probably don't care
[18:02:51] <taiden> yeah i'm still having huge issues with lookahead
[18:02:52] <pfred1> Tom_itx my drives cost me $10 a piece
[18:03:03] <Tom_itx> i'm not knocking your drives...
[18:03:05] <Tom_itx> just saying
[18:03:06] <pfred1> you're not getting Geckos for that
[18:03:10] <Tom_itx> nope
[18:03:13] <taiden> wont break 100 ipm on a 6" long segment that doesn't deviate more than 0.010" from being a straight line
[18:03:28] <taiden> will break 600 ipm on a 6" long G1 movement
[18:03:44] <Tom_itx> so it's better?
[18:03:50] <taiden> it's not better
[18:03:55] <taiden> it's about the same
[18:04:00] <pfred1> right now my electronics is about all that is working right on my machine
[18:04:30] <pfred1> well, it is just the X axis that is screwed up
[18:04:37] <Tom_itx> seems 100 is better than 50
[18:04:45] <taiden> i misspoke earlier
[18:04:47] <Tom_itx> that's 2x improvement
[18:05:03] <taiden> that was with an earlier test
[18:05:17] <taiden> with the current test it was 100 ipm before changing tolerances and 100 ipm after :( sorry for the confusion
[18:05:34] <taiden> mastercam doesn't appear to have reduced the number of segments used either
[18:05:44] <Tom_itx> it should
[18:05:55] <Tom_itx> deviation from true path
[18:06:00] <Tom_itx> that's what you're looking for
[18:06:26] <taiden> hm
[18:06:36] <taiden> mastercam post is set for 0.01gs of cornering acceleration
[18:06:53] <taiden> i can never tell what stuff is actually controlled in post or by linuxcnc
[18:07:07] <Tom_itx> i've seen lots of others but no mastercam post
[18:07:24] <Tom_itx> that's why you compare the code output
[18:08:28] <taiden> compare to what?
[18:08:46] <Tom_itx> previous output
[18:09:25] <pfred1> try setting the cornering acceleration higher
[18:10:19] <Tom_itx> if the code gets smaller you know the segments are longer and less accurate
[18:10:27] <Tom_itx> but maybe within part tolerance
[18:12:06] <Tom_itx> you're not gonna get fabulous performance from software stepgen
[18:13:08] <taiden> i'm not willing to accept that it's because of software stepping
[18:13:19] <pfred1> me either latency is latency
[18:13:19] <taiden> maybe i'm being naive
[18:13:31] <pfred1> it doesn't change appreciably with load
[18:13:58] <taiden> sure the rapids will be faster because a mesa card will produce much higher pulse frequencies
[18:14:22] <taiden> but in my opinion that has nothing to do with the fact that this thing is running 1/9 the velocity it is designed to run
[18:14:29] <taiden> in a situation that makes it seem like it's a lookahead issue
[18:14:37] <pfred1> like you said it can do the speed
[18:15:47] <taiden> http://pastebin.com/FK7pUJuL
[18:15:54] <taiden> here is the toolpath in question
[18:18:15] <taiden> i mean, i could just bump the acceleration up really high but
[18:18:20] <taiden> i'd rather not if i can avoid it
[18:22:55] <taiden> well i just tried it at 100 in/s/s and it's actually not much better believe it or not
[18:31:12] <taiden> just used g64 p0.002 and it's going almost twice the speed
[18:34:12] <taiden> g64 p0.005 even faster still, 400 ipm in sections
[18:46:11] <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
[18:59:15] <Tom_itx> how's the accuracy?
[19:00:07] <Tom_itx> this must be a router or such
[19:00:21] <Tom_itx> i didn't catch what machine you had
[19:19:43] <taiden> it's a custom built router
[19:20:32] <taiden> https://www.facebook.com/video.php?v=10203035962239609
[19:21:07] <taiden> i built it for surface contouring
[19:21:19] <taiden> low DOC low stepover fast contouring
[19:21:21] <PetefromTn_> video no worky
[19:21:24] <_methods> linkie no workie
[19:21:29] <taiden> sorry one second
[19:21:45] <_methods> cuttin foam?
[19:22:22] <taiden> https://dl.dropboxusercontent.com/u/23865811/Video/IMG_1702.MOV
[19:22:27] <taiden> hardwoods
[19:22:46] <_methods> ah nice
[19:23:26] <taiden> i'll probably adjust the belt ratio to allow 500 ipm rapids though
[19:23:37] <taiden> that video is at 900 ipm
[19:24:15] <_methods> pbc linears?
[19:24:53] <_methods> nice build
[19:28:40] <PetefromTn_> interesting
[19:28:44] <PetefromTn_> is that a weldment?
[19:30:03] <PetefromTn_> what sort of table are you planning for it and how will it be affixed to the lower movement
[19:31:01] * _methods was kinda wondering the same
[19:39:23] <Tom_itx> can't view either one on this pc :(
[19:39:59] * Tom_itx visualizes a nice custom built router
[19:40:12] <_methods> what format you need?
[19:40:32] <Tom_itx> i dunno, youtube works on it
[19:40:41] <_methods> mp4
[19:40:45] <PetefromTn_> It opened fine with my KMpplayer
[19:40:49] <pfred1> IMG_1702.MOV worked here
[19:40:50] <Tom_itx> it's a rather slow irc only pc
[19:41:03] <Tom_itx> yeah i don't have alot of stuff installed on it
[19:41:18] <pfred1> aptitude install mplayer
[19:41:22] <Tom_itx> but it does irc rather well
[19:41:58] <pfred1> mplayer will work with like an original Pentium P200
[19:42:08] <_methods> converting now
[19:42:46] <_methods> https://www.dropbox.com/s/p7b072tjupzywl9/IMG_1702.mp4?dl=0
[19:42:56] <_methods> mp4 for ya heheh
[19:43:27] <Tom_itx> http://tom-itx.no-ip.biz:81/~webpage/itx/itx2.JPG
[19:43:39] <Tom_itx> been running 12/7 for several years now
[19:44:35] <Tom_itx> thanks
[19:44:50] <_methods> np
[20:20:19] <PetefromTn_> I ate too much
[20:20:30] <PetefromTn_> :D
[20:23:52] <taiden> NSK linear actuators
[20:23:59] <taiden> and yes a steel welded frame
[20:24:19] <PetefromTn_> it looks pretty nice man
[20:24:34] <PetefromTn_> got any closer pictures of it so we can see how it is constructed?
[20:25:07] <taiden> i appreciate it. i have some renders
[20:25:46] <PetefromTn_> envelope?
[20:25:53] <taiden> 15x15x9
[20:26:05] <taiden> z is too long, had to do with parts availability
[20:26:31] <taiden> https://dl.dropboxusercontent.com/u/23865811/Photos/solidedge13.JPG
[20:26:32] <PetefromTn_> if you ask me your Z can never be too long heh
[20:26:53] <taiden> I hear you, I'm not crying over it :)
[20:27:14] <taiden> I have 6" under the gantry so this allows quite a bit of options for the future including a large 4th axis
[20:27:15] <PetefromTn_> is there any outside edge support planned for the table?
[20:27:30] <taiden> I do not understand your question
[20:27:37] <taiden> oh
[20:27:40] <taiden> I understand now
[20:27:43] <taiden> no, there is not
[20:27:53] <taiden> I will consider it if it proves to be an issue
[20:28:06] <taiden> table is 0.500" mic 6 with 3/4" MDF over it
[20:28:16] <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
[20:28:23] * LeelooMinai steals the table from taiden and runs off
[20:28:29] <taiden> Yes, everyone who has seen it has said that
[20:28:34] <taiden> :)
[20:28:58] <taiden> the effective linear guide width on the MCM08 is about 80mm
[20:29:35] <taiden> it seems to do a lot for handling moments
[20:30:04] <taiden> and moments on a moving table Y are very low
[20:30:12] <taiden> moment arm is about 3"
[20:30:37] <taiden> so with a 50 lb cutting force the moment on the linear actuator is about 12 ft-lbs
[20:31:04] <taiden> rotational deflection on these components in the 20 ft-lb range is sub 0.001"
[20:31:13] <PetefromTn_> this is for wood and plastic cutting or what?
[20:31:19] <taiden> yes, wood and plastic
[20:31:22] <taiden> mostly hardwoods
[20:31:35] <PetefromTn_> interesting
[20:31:54] <PetefromTn_> did you weld up the frame
[20:31:57] <taiden> I did
[20:32:02] <PetefromTn_> tig?
[20:32:05] <taiden> I was surprised at how little it moved during welding
[20:32:16] <taiden> 120v mig welder
[20:32:25] <taiden> i used the linear actuators as my clamps
[20:32:27] <taiden> nothing else
[20:32:37] <taiden> ended up having to shim one axis 0.007" and that was it
[20:33:30] <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?
[20:33:38] <taiden> i use shim sock
[20:33:44] <PetefromTn_> or rather how did you shim it
[20:33:48] <taiden> stock
[20:33:50] <PetefromTn_> tapered shim stock
[20:33:53] <PetefromTn_> ?
[20:33:55] <taiden> nope
[20:34:01] <taiden> you can buy a nice pack of it from amazon for about 420
[20:34:03] <taiden> $20
[20:34:21] <taiden> comes in 1 thou, 2, 3, 4, 5, 6, 7, 10, and 15 i think
[20:34:51] <taiden> you can cut it with scissors
[20:35:11] <taiden> i have four bolts holding the actuators to the frame
[20:35:20] <taiden> i tighten down three and use a feeler gauge to find the gap
[20:36:00] <PetefromTn_> ok
[20:36:20] <taiden> then i just shim it with the aforementioned shim stock
[20:36:28] <taiden> my only complaint with the steel frame is it rings like a bell
[20:36:30] <taiden> it's very loud
[20:37:04] <PetefromTn_> maybe you can drill some holes and squirt in some epoxy or something to deaden it.
[20:37:07] <LeelooMinai> taiden: You have big spaces in there - fill them with something - epoxy granite for example:)
[20:37:29] <pfred1> duck tape
[20:37:36] <LeelooMinai> Presumably it has 30 times more dampening than steel
[20:38:02] <taiden> that would be awesome
[20:38:24] <taiden> it's already very heavy
[20:38:28] <taiden> about 140 pounds
[20:38:28] <LeelooMinai> I put in my aluminum beams sand - not sure if it will make a lot of difference, but it's there in side
[20:38:41] <taiden> I bet sand would work very well
[20:38:47] <taiden> I considered rice
[20:39:26] <taiden> I have found that the steppers will stall with about a 50 lb linear force
[20:39:45] <taiden> i feel that this is acceptable for cutting hardwoods
[20:40:07] <taiden> with the Hitachi m12vc router
[20:40:09] <PetefromTn_> what kind of projects are you planning to make with the hardwoods
[20:40:24] <taiden> I make audio products
[20:40:32] <taiden> headphone parts
[20:40:59] <taiden> my last build rapided at about 240 ipm and was very floppy
[20:41:12] <PetefromTn_> what kind of headphone parts
[20:41:23] <taiden> i wanted to do complex surfaces and it was too long to be profitable with the old machine
[20:41:30] <taiden> that is why i went nuts and designed for 900ipm
[20:41:48] <taiden> too long meaning it would take too long to cut
[20:42:28] <jdh> pics of hardwood headphones?
[20:45:27] <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
[20:45:42] <jdh> snob
[20:45:47] <taiden> things like stands
[20:45:47] <taiden> people seem to like really nice wood products
[20:45:47] <taiden> i figure it's because we live in a world of plastic
[20:45:59] <taiden> my oldone was made from duct tape and bailing wire :)
[20:47:05] <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
[20:48:01] <PetefromTn_> that looks like a decent machine too actually
[20:49:06] <taiden> if lookahead was improved it would probably reduce machining time for surfaces for me by about 50%
[20:49:23] <taiden> i'd like to learn more about the new trajectory planner that was mentioned earlier
[20:50:13] <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
[20:51:01] <taiden> i like to carve sometimes
[20:51:03] <pfred1> get a 3D printer
[20:51:24] <taiden> you get some awesome forms from wood carving
[20:51:25] <PetefromTn_> no I want to learn to program my VMC for 3d parts a lot more than I have been
[20:51:59] <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
[20:52:14] <PetefromTn_> what kind of hardwood parts have you machined on your routers
[20:52:17] <taiden> surface finishing took so long on my old machine
[20:52:32] <taiden> mostly those headphone parts
[20:52:43] <PetefromTn_> what headphone parts?
[20:52:46] <taiden> they are usually round, not that complex
[20:53:09] <taiden> but i actually wanted to do surface machining for stuff with ergonomic handles
[20:53:18] <taiden> target pistol grips are a great example
[20:53:29] <jdh> how do you generate toolpaths
[20:53:41] <pfred1> I think a lot of stuff like that is finished with sanders
[20:53:44] <taiden> http://www.eeaston.com/wp-content/uploads/2010/06/SigTrailside-PlasticGrip-Right.jpg
[20:53:51] <taiden> yes it is
[20:54:04] <PetefromTn_> did you make that?
[20:54:08] <taiden> I did not
[20:54:12] <jdh> I'd like to make some 45 grips
[20:54:15] <taiden> but if you can get it to a 0.003" scollop height your sanding time is very quick
[20:54:34] <pfred1> I knew a guy who knew the guy that made the plastoc for Colt
[20:54:36] <pcw_home> taiden: if you are doing high speed profiling you would benefit from the new TP
[20:54:53] <pfred1> you know the plastic with the swirl patterns in it?
[20:54:56] <taiden> that is what i am excited for
[20:55:04] <taiden> pcw_home: do you know where i can find more information on it?
[20:55:27] <pfred1> he had a whole sheet of it
[20:55:28] <pcw_home> you just download 2.7 or master, its included in both
[20:55:35] <pfred1> like 4x8
[20:55:39] <taiden> is it already released and stable?
[20:56:14] <pcw_home> its pre release but lots of people are using it
[20:56:35] <taiden> can i grab it from a repository?
[20:56:43] <taiden> i'm not very savvy
[20:57:09] <pfred1> I've built pre-releases of Linuxcnc it's not hard
[20:57:12] <pcw_home> yes, you can get it from the buildbot or build it from source
[20:57:37] <taiden> how close is it to release?
[20:57:48] <taiden> i'm not sure if pre-release is like an alpha version or just about to be deployed
[20:57:52] <pcw_home> I think 2.7 is relatively close to release
[20:58:18] <pcw_home> (master is 2.8.0-pre or some such)
[20:58:23] <pfred1> building an RTAI kernel can be tough sometimes though
[20:58:33] <pcw_home> no need
[20:58:50] <pfred1> if you're setting up a whole custom system you kind of need it
[20:59:02] <pcw_home> debian iso has both RTAI and preemt-rt kernel available
[20:59:08] <taiden> where can i find a guide on installing it? i have a fresh install of 2.6 live USB
[20:59:46] <pcw_home> The wiki instructions for installing from source work OK
[20:59:46] <pfred1> I've done a Debian build on my own and almost got Gentoo to work
[21:00:14] <pfred1> I'd have gotten gentoo to work but building the kernel there was one parameter I didn't have right
[21:00:20] <pcw_home> if you like to play, fine... If you want to run a machine download the ISO
[21:00:20] <taiden> what about buildbot? is that recommended?
[21:00:47] <pcw_home> if you dont want to build from source, its an option
[21:00:48] <taiden> I need this to be as reliable as possible, this will be a machine deployed in a business
[21:00:55] <pfred1> if you don't like to play then don't run Linux
[21:01:15] <taiden> pfred1: I don't agree, a plain install of LinuxCNC has worked very well for me for a few years
[21:01:21] <pcw_home> i run linux so i dont have to play
[21:01:21] <taiden> I prefer it much more than WinCNC and Mach3
[21:01:21] <pfred1> go run fucking Windows
[21:01:48] <taiden> I'd just like this new TP :)
[21:01:50] <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.
[21:02:42] <pcw_home> probably possible but those scales are notoriously inaccurate
[21:03:09] <LeelooMinai> In this case it's a digital indicator
[21:03:12] <pcw_home> probably better to just use a switch based probe
[21:03:21] <LeelooMinai> Supposedly accurate to 0.001mm
[21:03:52] <LeelooMinai> I already looked at the signal from it on oscilloscope - seems 1.8V based simple stream
[21:03:55] <pcw_home> Ha Ha
[21:04:15] <pfred1> taiden well it was people playing that made Linux possible
[21:04:46] <taiden> yep! and I am grateful for that
[21:04:49] <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
[21:05:08] <zeeshan|2> LeelooMinai: hi
[21:05:13] <zeeshan|2> is it a 1.8V square wave?
[21:05:19] <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
[21:05:28] <LeelooMinai> It's a digital signal of course, yes
[21:05:33] <LeelooMinai> Just clock + data
[21:05:40] <pcw_home> I renishaw type knockoff probe wii be more accurate ans probably faster
[21:05:42] <zeeshan|2> like if your caliper is reading 1.000"
[21:05:44] <zeeshan|2> what outputs?
[21:05:57] <zeeshan|2> and 2.000"
[21:07:00] <LeelooMinai> Well, they advertise it with 0.001 resolution and 0.004mm accuracy
[21:07:09] <LeelooMinai> Not sure if that is true, but maybe? :)
[21:07:21] <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
[21:07:33] <zeeshan|2> no no
[21:07:36] <pcw_home> the protocol is known but it reads continuously at a slow repeat rate, to a touch probe is better
[21:07:39] <zeeshan|2> im wondering what the output is at 1.000"
[21:07:41] <zeeshan|2> and 2.000"
[21:07:44] <zeeshan|2> like how the output changes
[21:08:00] <LeelooMinai> zeeshan|2: What does it matter?
[21:08:22] <zeeshan|2> to know how to program it.
[21:08:23] <pcw_home> its just a binary (or BCD) position count
[21:08:27] <LeelooMinai> pcw_home: What is that touch probe you talk about? Some $1k device? :)
[21:08:28] <zeeshan|2> oh
[21:08:30] <zeeshan|2> thats easy then!
[21:08:36] <zeeshan|2> each position = 0.001"?
[21:09:00] <LeelooMinai> I am not worrying about decoding it - just how to connect it to hardware and get at it from linuxcnc
[21:09:19] <zeeshan|2> i think the 7i77 needs 4.5V to register a change of state
[21:09:27] <pcw_home> there are decent home made Renishaw type knockoffs
[21:09:39] <LeelooMinai> I can put level decoder between them - that's also not a problem
[21:09:50] <zeeshan|2> so then just connect it to your input?
[21:09:56] <zeeshan|2> your output from it is slow enough
[21:10:13] <LeelooMinai> Yes, and then what?
[21:10:23] <zeeshan|2> then write some code
[21:10:26] <zeeshan|2> to do what you want to do :P
[21:10:28] <zeeshan|2> you're the programmer!
[21:10:48] <LeelooMinai> Right, but do I deal with hal, some linuxcnc plugins, I don't know
[21:10:59] <zeeshan|2> you deal with a hal component
[21:11:08] <zeeshan|2> which you can write in c
[21:11:15] <zeeshan|2> correct me if im wrong
[21:11:25] <zeeshan|2> but you're basically wanting to command stepper to move 0.001"
[21:11:28] <pcw_home> I think the issue I noticed with those cheap scales is the battery+ is ground
[21:11:31] <zeeshan|2> and then you want to compare that with your input from your scale
[21:11:32] <zeeshan|2> right?
[21:11:39] <LeelooMinai> Are there some components like this for any kind of probes done already?
[21:11:40] <zeeshan|2> to see if you're good
[21:12:12] <pcw_home> so the output swing negative relative to case ground
[21:12:59] <LeelooMinai> I am looking at those renishaw probes - how are they different from an indicator?
[21:13:23] <pcw_home> they are just a switch (a very accurate switch)
[21:13:38] <LeelooMinai> Switch for measuring distance?
[21:13:45] <LeelooMinai> What would that be? :)
[21:14:06] <zeeshan|2> pcw_home: she's trying to map her table
[21:14:07] <zeeshan|2> error
[21:14:07] <LeelooMinai> I want to measure XY table distance from Z axis
[21:14:18] <pcw_home> they switch when the probe is touched
[21:14:31] <LeelooMinai> A, so that's not really what I am looking for
[21:14:50] <zeeshan|2> LeelooMinai: are you just trying to map the error?
[21:15:02] <zeeshan|2> i think your component will be really easy.
[21:15:18] <zeeshan|2> it needs to know what your x and y limits are
[21:15:23] <pcw_home> http://www.vinland.com/touch-probe.html
[21:15:32] <LeelooMinai> I want to see if the table is flat basically in respect to the z-axis
[21:15:34] <zeeshan|2> and then you have a loop that moves the table 0.001" in x for example
[21:15:47] <zeeshan|2> and you record the scale position in an array and then save it into a text file.
[21:16:02] <pcw_home> theres already code for doing this (with a probe)
[21:16:18] <zeeshan|2> oh youre trying to measure flatness
[21:16:19] <zeeshan|2> lol
[21:16:33] <LeelooMinai> That's kind of reverse of what I want to do:)
[21:17:04] <LeelooMinai> I want to use readings from digital probe all over the table to align axis, check the table is flat, etc.
[21:17:08] <zeeshan|2> pcw_home: are you a programmer?
[21:17:14] <LeelooMinai> I cannot really use touch probe for that...
[21:17:28] <zeeshan|2> why not
[21:17:36] <LeelooMinai> zeeshan|2: I think he makes and programs mesa cards, etc. so yes? :)
[21:17:37] <zeeshan|2> you can if your positioning in the X axis is accurate
[21:17:53] <pcw_home> well a low level programmer (nothing above assembler if I can help it)
[21:17:58] <taiden> wait
[21:18:01] <zeeshan|2> okay you're hardcore then :P
[21:18:07] <taiden> is there already a supported method for touch probe scanning with linuxcnc?
[21:18:31] <pcw_home> This is exactly what a touch probe is for
[21:18:49] <taiden> yes, I just never looked into it for linuxcnc
[21:18:55] <LeelooMinai> Hmm, I guess if I assume that the rails are straight...
[21:19:15] <LeelooMinai> I could use touch probe to align things too
[21:19:41] <LeelooMinai> It seems to be pretty simple too - just something that will short to the bed
[21:19:51] <LeelooMinai> Unless it's make from epoxy granite like mine may be:p
[21:20:05] <LeelooMinai> made*
[21:20:14] <LeelooMinai> Then what...
[21:20:18] <zeeshan|2> LeelooMinai: if youre just trying to measure flatness
[21:20:26] <zeeshan|2> i dont understand why you cant drag the probe across the table
[21:20:29] <zeeshan|2> and just record the values?
[21:20:40] <zeeshan|2> so for each x y position you have Z value
[21:20:40] <LeelooMinai> zeeshan|2: With hand? :)
[21:20:52] <zeeshan|2> then output that as a 3d plot
[21:20:54] <zeeshan|2> in a math software
[21:21:04] <LeelooMinai> Yes, but doing say 400 measurements like that would be much nicer if automated
[21:21:11] <zeeshan|2> yea its just two for loops?
[21:21:29] <PetefromTn_> usually you would surface the table using the machine to try to get it flat to the spindle
[21:21:44] <PetefromTn_> at least on a table top router anyway
[21:22:11] <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 } }
[21:22:14] <pcw_home> assuming the rails are not skewed...
[21:22:26] <LeelooMinai> But the spindle won't get to every part of the table - the working area is smaller
[21:22:26] <zeeshan|2> and then write the array to a text file?
[21:22:53] <zeeshan|2> okay so map the working area first using that method
[21:23:05] <zeeshan|2> and then stick the probe out
[21:23:08] <zeeshan|2> and do the outside areas
[21:23:09] <LeelooMinai> zeeshan|2: I know that that part is easy - but first I need to get that data into the component code
[21:24:29] <LeelooMinai> So it seems I need to read docs on writing those components and not mess with mesa firmware, right?
[21:24:29] <os1r1s> zeeshan|2: Probing that way is called the "bed of nails" approach.
[21:24:40] <os1r1s> zeeshan|2: Works great for 3d, but sucks for 2D
[21:24:51] <zeeshan|2> shes wanting a 3d profile..
[21:25:09] <zeeshan|2> LeelooMinai: why would you mess with mesa??!
[21:25:57] <LeelooMinai> NOt sure if I will get the data intact from mesa
[21:26:09] <os1r1s> zeeshan|2: You can use the output as a point cloud. Run it through meshlab to turn it into an STL
[21:26:50] <LeelooMinai> It's not super-fast protocol, but not sure if I read it directly if I will get all the data stream (?)
[21:27:09] <zeeshan|2> try
[21:27:14] <zeeshan|2> =D
[21:27:21] <zeeshan|2> worst comes to worst you can use rs232
[21:29:01] <LeelooMinai> Or write it on paper and enter using keyboard
[21:29:10] <zeeshan|2> :D
[21:29:47] <zeeshan|2> os1r1s: got a link for this point could method
[21:32:11] <pcw_home> probing is already supported in linuxcnc. not sure why you would want to make this more complicated
[21:33:05] <LeelooMinai> Because it relies on the axis position and does not really read any values from digital probe
[21:33:19] <os1r1s> zeeshan|2: https://www.youtube.com/watch?v=gDFRUPK-eIc
[21:33:34] <os1r1s> zeeshan|2: Best link I could find in a minute
[21:33:36] <Tom_itx> pcw_home on that common block it's split so you can use GND and +5v on the same rail?
[21:34:17] <zeeshan|2> thats cool :C
[21:35:12] <os1r1s> zeeshan|2: Follow the pictures. Its actually really easy
[21:36:40] <pcw_home> Tom_itx: yes its split in half
[21:38:18] <zeeshan|2> is there a quick way to clone a hd in linux
[21:38:27] <zeeshan|2> and then replace the hd with that cloned hd
[21:38:28] <pcw_home> dd
[21:38:29] <zeeshan|2> and have it all work
[21:38:49] <Tom_itx> i've used ghost
[21:38:56] <Tom_itx> but on a win box
[21:39:11] <zeeshan|2> i want to use the same comp to make a copy of its drive
[21:39:29] <zeeshan|2> im doing from an ide old school drive to a sata solid state
[21:39:33] <zeeshan|2> i dont wanna re-install everything
[21:39:38] <Tom_itx> i've done that
[21:39:38] <zeeshan|2> doing = going
[21:39:44] <zeeshan|2> okay howd you do it? :)
[21:39:45] <Tom_itx> but not on the host pc
[21:39:47] <zeeshan|2> aw
[21:39:54] <Tom_itx> i pulled them and used ghost
[21:40:14] <Tom_itx> i'm sure linux has a way but i'm not familiar with it
[21:40:23] <Tom_itx> ^^ suggested 'dd'
[21:40:38] <pfred1> tar
[21:41:08] <zeeshan|2> Tom_itx: did it copy the master boot record too?
[21:41:13] <Tom_itx> i recently went from a 300g to 500g with ghost with no problems
[21:41:21] <Tom_itx> it copies it all
[21:41:22] <zeeshan|2> or did you have to fix it
[21:41:22] <zeeshan|2> ok
[21:41:29] <zeeshan|2> im gonna try this thing called "clonezilla
[21:41:32] <Tom_itx> i've done windows and linux both this way
[21:41:41] <pfred1> the classic solution is to use tar
[21:42:49] <pfred1> http://www.thinkwiki.org/wiki/How_to_copy_a_Linux_installation
[21:43:47] <pfred1> dd will copy errors
[21:43:52] <Tom_itx> pcw_home what's the difference between the din rail kits (2pcs) vs (3pcs)
[21:43:57] <Tom_itx> the pics are the same for both
[21:44:09] <pcw_home> 2 vs 3 clips
[21:44:17] <Tom_itx> does it include any rail?
[21:44:23] <Tom_itx> or do you have rail
[21:45:07] <LeelooMinai> I think you need to have some rail for it already
[21:45:26] <Tom_itx> i have a little but i don't think it's enough
[21:45:27] <pcw_home> you need th DIN rail
[21:45:32] <Tom_itx> ok
[21:48:04] <Connor> I used 4 clips on the 7i76, 1 for each pair of holes.. wanted it supported at each stress point.
[21:48:23] <Tom_itx> where did you get your rail?
[21:48:30] <Connor> McMaster.
[21:48:46] <Connor> http://www.mcmaster.com/#din-rails/=us9eip
[21:48:52] <LeelooMinai> I just attached 7i76 to aluminum base with PC standoffs
[21:49:18] <Connor> I got 8961K15
[21:49:50] <Connor> probably should have gotten 8961K45 -- the one without holes.. one with holes ended up being a pain because they were so dang large.
[21:50:10] <Connor> http://www.ivdc.com/cnc/mill_11_21_14_02.jpg
[21:50:19] <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)
[21:50:21] <Connor> You can see the size of them on the DIN rail in the upper right hand area
[21:51:01] <Connor> I did DD from 1GB to a 2GB drive.. and the resized it.. don't remember how..
[21:51:02] <zeeshan|2> pcw_home: so basically i do dd if=/dev/sda of=/dev/sdb bs=4096 ?
[21:51:28] <pcw_home> if they are different drives I would use tar
[21:51:31] <pfred1> you maintain the same file fragmentation with dd
[21:51:32] <zeeshan|2> oh damn
[21:51:56] <pcw_home> fragmentation is a windows thing
[21:52:03] <PetefromTn_> http://i.imgur.com/1yk4el8.jpg :)
[21:52:10] <pfred1> you think Linux filesystems don't fragment?
[21:52:19] <pfred1> OK
[21:52:39] <Connor> PetefromTn_: Yup. solid rail.. no slots in it..
[21:52:57] <PetefromTn_> works a treat
[21:53:21] <Connor> I need a bracket that has a db25 and db9 holes in it...
[21:53:29] <Connor> standard pc bracket.
[21:53:58] <Connor> I use to have access to tons of that stuff when I worked at the ISP / Computer Store.
[21:54:01] <Connor> not so much now.
[21:58:17] <pfred1> Connor if you really look at db cut outs they're just ovals with slots on the ends
[21:58:46] <pfred1> i know this because recently I had to cut a db 25 out here
[21:58:59] <skunkworks> Connor: how is the 5i25 going?
[21:59:36] <Connor> I know.. machine it parts right now.. no way to make one.
[21:59:44] <Connor> skunkworks: got the z moving last night
[22:00:17] <pfred1> I used a unibit amd a body saw
[22:02:02] <pcw_home> some DXXX cutouts are trapezoidal (the oval ones are common on PC brackets)
[22:02:04] <pfred1> before I really looked at one I thought the cut outs had the angle like the jacks have
[22:02:28] <Connor> I probably have one in a box somewhere.. it's just a matter of finding it.
[22:02:30] <pfred1> yeah I took my cues from a PC bracket I had laying around
[22:03:05] <pfred1> I think the knock out for cutting them has the angle?
[22:03:38] <pcw_home> Yes the Greenlee punch has an angle
[22:03:44] <pfred1> those knock out dies are pretty expensive though
[22:04:20] <pfred1> you really need to be punching a lot of those holes to justify that cost
[22:05:12] <pfred1> in any event an oval with slots seems to work just fine to me
[22:05:33] <pcw_home> Connor: aren't there parallel +serial cards that have that bracket hole combo?
[22:05:52] <pfred1> I think i have a few of the brackets like that here
[22:05:57] <Connor> pcw_home: Yup. I can buy them.. I was just hoping I had one already.
[22:06:27] <pfred1> but I needed the hole in a piece of sheet metal
[22:06:53] <Connor> http://www.amazon.com/Pc-Accessories-Mounting-Bracket-L-Bracket-10-PACK/dp/B00CBAK83Q
[22:07:03] <pfred1> lifetime supply
[22:07:04] <Connor> $5.60 + $7.87 shipping OUCH
[22:07:18] <pfred1> yeah but you'll never need to buy another one
[22:08:59] <LeelooMinai> Or... http://www.aliexpress.com/item/Motherboard-RS232-DB9-Pin-Com-Port-Ribbon-Serial-Cable-Connector-Bracket-ES88/1791400129.html
[22:09:30] <Connor> LeelooMinai: Need on that has both db25 and db9.. only 1 slot
[22:09:55] <skunkworks> I probably have a ton at work.. I could send you a few but not until next week..
[22:09:59] <zeeshan|2> PetefromTn_: damn your blurry pics!! :P
[22:10:00] <LeelooMinai> http://www.aliexpress.com/item/NI5L-PCI-Slot-Header-Serial-DB9-Pin-COM-with-Parallel-DB25-Pin-LPT-Cable-Bracket/1243471032.html
[22:10:22] <zeeshan|2> wow
[22:10:25] <PetefromTn_> ?
[22:10:25] <zeeshan|2> a buck for that
[22:10:36] <zeeshan|2> PetefromTn_: of the 7i77 :P
[22:10:47] <PetefromTn_> maybe your vision is just shitty
[22:10:54] <Connor> skunkworks: That would be fine. Not in a super hurry for it.
[22:10:57] <PetefromTn_> looks fine to me :D
[22:10:57] <zeeshan|2> http://i.imgur.com/1yk4el8.jpg
[22:10:59] <zeeshan|2> fak you!! :P
[22:11:00] <pfred1> probably bad lighting
[22:11:01] <zeeshan|2> its lburry!!
[22:11:02] <zeeshan|2> ahhaha
[22:11:09] <zeeshan|2> what do you take photos with?
[22:11:30] <zeeshan|2> and why does your 7i77 have no orange field power connector
[22:11:31] <PetefromTn_> I use a flint and chisel like the flintstones
[22:11:32] <pcw_home> my eyes!
[22:11:53] <PetefromTn_> you can all kiss my keister heh
[22:11:54] <zeeshan|2> i got the premium orange version
[22:11:57] <zeeshan|2> :D
[22:12:05] <PetefromTn_> I don't even have one now
[22:12:10] <pfred1> that is the shakes
[22:12:16] <Connor> http://www.ivdc.com/cnc/mill_11_21_14_01.jpg
[22:12:19] <Connor> like mine. :)
[22:12:23] <os1r1s> Anyone have any good suggestions for a video camera to use as a spindle cam?
[22:12:27] <zeeshan|2> connor has the preimum orange version
[22:12:27] <zeeshan|2> :D
[22:12:28] <PetefromTn_> apparently the one that I sent is not repairable sigh
[22:12:44] <Connor> PetefromTn_: Dang, that sucks.
[22:12:44] <zeeshan|2> connor
[22:12:48] <zeeshan|2> did you seriously crimp all your wires
[22:12:50] <PetefromTn_> hey thats blurry too
[22:12:52] <zeeshan|2> to be put in pin pads? :p
[22:12:59] <PetefromTn_> how come nobody is whining about that pic
[22:13:03] <Connor> zeeshan|2: yes, yes I did.
[22:13:04] <pcw_home> Actually I got determined and fixed it
[22:13:11] <zeeshan|2> PetefromTn_: we like to pick on you :D
[22:13:18] <PetefromTn_> yeah that much I got
[22:13:33] <zeeshan|2> connor you're hardcore :P
[22:13:40] <PetefromTn_> pcw_home really? Or are you just bustin' chops?
[22:14:01] <zeeshan|2> wow pcw_home
[22:14:04] <zeeshan|2> master expert
[22:14:09] <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...
[22:14:56] <pcw_home> Yeah 4 chips dead (output drivers, 3.3V regulator, DSPIC)
[22:15:05] <PetefromTn_> hey you got pins on all those wires!
[22:15:08] <zeeshan|2> 240v did only that? :P
[22:15:15] <PetefromTn_> how come we did not do that on my shite?
[22:15:36] <Connor> PetefromTn_: I told you to do it.. but you didn't want too.. :/
[22:15:47] <zeeshan|2> you guys have too much time
[22:15:49] <zeeshan|2> its pin pads!
[22:15:49] <PetefromTn_> so the repair will cost as much as three new 7i77's right WAAH!
[22:15:52] <zeeshan|2> you can shove a wire right inthere :P
[22:16:06] <PetefromTn_> when I don't remember that?
[22:16:23] <pfred1> its that moonshine
[22:16:24] <PetefromTn_> besides I don't have the right tools or pins for that
[22:17:04] <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.. :)
[22:17:29] <PetefromTn_> how much are the wire ferrules?
[22:17:37] <Connor> zeeshan|2: http://www.ivdc.com/cnc/mill_10_27_14_01.jpg
[22:17:40] <zeeshan|2> connor i thought wire ferrules were for non padded terminals
[22:17:50] <Connor> all those have wire ferrules too.
[22:17:52] <pcw_home> Connor: might be an issue, try an keep the motor leads at right angles to the signal cable
[22:18:23] <pcw_home> (to avoid making a transformer)
[22:19:04] <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.
[22:19:22] <Connor> Looks like I would get 1.5" or so.
[22:19:50] <pcw_home> you will know if theres too much coupling...
[22:19:53] <Connor> zeeshan|2: You can use them on anything. I like them better than just using bear wires..
[22:21:12] <zeeshan|2> i guess you dont have to worry about of them fraying
[22:21:14] <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?
[22:21:15] <zeeshan|2> and touching another terminal |:P
[22:21:16] <pcw_home> the plastic sleeve make a nice strain relief (for bending strain not pulling)
[22:21:59] <pcw_home> common mode choke on the spindle wires maybe
[22:22:48] <Connor> is that like one of those clip-on ones from radio-shack ?
[22:22:57] <pcw_home> (and twist the spindle wires)
[22:23:36] <pcw_home> (so the magnetic field cancels as much as possible)
[22:23:58] <Connor> right. I have some slack.. I might be able to twist it enough for it to stay.
[22:24:32] <pcw_home> big beads are a little better than clip on (but need to thread)
[22:25:21] <Connor> It's wire spaded, not soldered.. so I can disconnect from the plug and thread them
[22:25:37] <pcw_home> I think the ones we use are from Laird
[22:25:56] <zeeshan|2> guys im stuck on this CAD problem
[22:26:14] <zeeshan|2> i need to generate random circles from 0.001" diameter to 0.008" max
[22:26:19] <pcw_home> you can steal them from defunct monitor cables if you have any left around
[22:26:23] <zeeshan|2> the space between them has to be minimum 0.003"
[22:26:27] <zeeshan|2> the circles cant intersect.
[22:26:31] <zeeshan|2> i need to do this in cad. im so lost :/
[22:26:59] <pcw_home> write a little script
[22:27:25] <zeeshan|2> i think i have to use some math in the script?
[22:27:32] <zeeshan|2> to find intersections
[22:27:43] <pcw_home> toss em randomly about, delete any that violate your rules
[22:27:56] <zeeshan|2> delete em manually?
[22:28:14] <zeeshan|2> i dont know if the api in solidworks or inventor
[22:28:20] <zeeshan|2> has some sort of detection for intersection of circles
[22:28:24] <zeeshan|2> i know how to do it using math
[22:28:45] <PetefromTn_> can you use some kind of array setup?
[22:28:48] <zeeshan|2> but like using equatio of a circle x^2+y^2 = r^2
[22:28:49] <pcw_home> just make an array of centers and diameters
[22:29:05] <zeeshan|2> and checking circle intersection using that eqn
[22:29:27] <zeeshan|2> okay i can make an array like that
[22:29:31] <pcw_home> search for intersections on each new candidate
[22:29:33] <zeeshan|2> but how to check for intersection and minimum gap
[22:29:44] <zeeshan|2> using math? :p
[22:30:07] <zeeshan|2> okay i guess i need to look at the api
[22:30:14] <zeeshan|2> and see if there is intersection detection
[22:30:17] <PetefromTn_> take your paint gun, stick your thumb over the nozzle and spray it onto a sheet of paper and scan it LOL
[22:30:23] <zeeshan|2> PetefromTn_: ROFL
[22:30:28] <zeeshan|2> im trying to do the exact oposite
[22:30:32] <zeeshan|2> like make a stencil
[22:30:40] <zeeshan|2> so i can use a spray can and some of the holes let the paint through
[22:30:42] <Connor> pcw_home: What will the symptoms be if I do have interference?
[22:30:52] <zeeshan|2> thx :D
[22:31:06] <PetefromTn_> hehe
[22:31:13] <pcw_home> most likely will be sserial CRC or extra character errors
[22:31:22] <Connor> ok
[22:32:03] <pcw_home> (just because other errors like in step signals are not checked)
[22:33:10] <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.
[22:33:43] <zeeshan|2> if there is a crc fail
[22:33:44] <zeeshan|2> what happens?
[22:33:52] <zeeshan|2> does it go in limp mode
[22:34:54] <pcw_home> messages with CRC errors are ignored by the remote (just logged)
[22:35:01] <zeeshan|2> ah
[22:35:26] <zeeshan|2> the reason i ask is i have to do crc check with modbus
[22:35:39] <zeeshan|2> i'm wondering what action i should take if there is a crc error
[22:35:44] <pcw_home> but this means the remote will not answer so you will get a notifier of a failed response
[22:35:45] <zeeshan|2> for vfd comm
[22:36:43] <zeeshan|2> maybe a resend of packet
[22:36:44] <pcw_home> the next cycle should be OK though so nothing is really lost
[22:36:50] <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!
[22:37:09] <Connor> I had it the next day at like 9:30am in the morning... and didn't even realize it..
[22:37:30] <PetefromTn_> Damn that is impressive service
[22:37:39] <zeeshan|2> PetefromTn_: tell us
[22:37:52] <PetefromTn_> it's nice to get that kind of servive
[22:37:56] <PetefromTn_> service
[22:38:00] <Connor> No joke. and no real proof that it was damaged before I used it.. I could have damaged it.. I have no idea..
[22:38:05] <PetefromTn_> tell us wha?
[22:38:11] <zeeshan|2> oh i thought you were tell us about your 7i77 repair :D
[22:38:36] <PetefromTn_> wish I had something to tell hehehe
[22:38:49] <Connor> sounds like pcw_home fixed it. :)
[22:39:00] <PetefromTn_> that's the rumor
[22:39:03] <zeeshan|2> LeelooMinai:
[22:39:04] <zeeshan|2> http://www.kijiji.ca/v-tool-other/kitchener-waterloo/machining-tools/1035705885?enableSearchNavigationFlag=true
[22:39:09] <zeeshan|2> er
[22:39:09] <zeeshan|2> nm
[22:39:18] <Connor> (10:54:59 PM) pcw_home: Yeah 4 chips dead (output drivers, 3.3V regulator, DSPIC)
[22:39:51] <zeeshan|2> pete i think you should buy a new one
[22:40:02] <zeeshan|2> ps pcw i'll take pete's old one for a discounted rated
[22:40:03] <zeeshan|2> thank u!
[22:40:09] <zeeshan|2> :-)
[22:40:28] <PetefromTn_> thanks for that kind offer but no I think I'll pass
[22:40:41] <zeeshan|2> =D
[22:40:48] <zeeshan|2> man i cant find the damn pic someone took of me
[22:41:01] <Connor> PetefromTn_: If you end up using steppers on the lathe you might sell it to him so you can get a 7i76. :)
[22:41:03] <zeeshan|2> we have 80" vernier calipers mitutoyo at school
[22:41:07] <zeeshan|2> i was measuring myself with it
[22:41:07] <zeeshan|2> hahah
[22:41:27] <PetefromTn_> Connor That's a possibility ya never know
[22:41:40] <PetefromTn_> not sure what kind of motors I am going to put on this monster yet.
[22:41:57] <PetefromTn_> altho those closed loop steppers do look interesting.
[22:44:07] <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..
[22:44:32] <PetefromTn_> NOOOOOoooooo!
[22:48:09] <zeeshan|2> perm ban
[22:49:03] <Connor> Give me another idea then...
[22:49:15] <Connor> I sent a email off to the people who make the thing... and asked on the forum too..
[22:49:28] <PetefromTn_> sure give it to me and it won't matter anymore hehehe
[22:49:58] <Connor> You'll just complain about it not having 4 digits after the decimal point...
[22:50:09] <Connor> :)
[22:50:48] <PetefromTn_> mmm probably..
[22:53:49] <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?
[22:55:11] <skunkworks> Connor: what pendon?
[22:55:43] <skunkworks> pendant
[22:56:56] <skunkworks> if it is the hb04 or variant... then it looks like no.. https://www.youtube.com/watch?v=oA_JDPKp3tI
[22:59:30] <Connor> Hb04
[22:59:43] <Connor> Wired version
[23:00:27] <Connor> That video has the older version with the 100 CPR MPG
[23:04:26] <os1r1s> Connor: Does the wheel work ok
[23:04:29] <os1r1s> ?
[23:06:58] <Connor_iPad> The detention is a little soft compared to other mpgs I've used. But not too bad.
[23:07:18] <Connor_iPad> Detent. Stupid autocorrect
[23:07:32] <os1r1s> Connor_iPad: One of the reviews I saw had it sticking
[23:07:49] <Connor_iPad> Not had that.
[23:08:02] <os1r1s> Glad to hear that isn't happening.
[23:08:15] <Connor_iPad> First one I got was bad. Mpg would loose direction.
[23:09:09] <Connor_iPad> I think it was a return that ebay reseller resold.
[23:10:18] <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
[23:17:59] <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?
[23:34:50] <pcw_home> hal component functions are attached to periodic threads like this:
[23:34:52] <pcw_home> addf stepgen.makepulses basethread
[23:35:14] <Connor_iPad> LeelooMinai: I think they're polled based on basethread or servothread
[23:35:54] <LeelooMinai> Right, so there's no way to call them only at a point some signal changes?
[23:36:18] <Connor_iPad> What are you trying to do?
[23:36:39] <LeelooMinai> Decoding simple protocol coming from digital indicator
[23:55:06] <LeelooMinai> That's lame though
[23:55:27] <Connor_iPad> Why?
[23:55:35] <LeelooMinai> I think I will go with my original plan of making fpga output the value of it in some registers
[23:55:51] <LeelooMinai> I will have to make a version of the firmware though
[23:56:41] <LeelooMinai> Because sampling some protocol at imprecise intervals is just ugly
[23:59:03] <PetefromTn_andro> Ya know what's really ugly?