#linuxcnc | Logs for 2014-07-24

[00:05:18] <Connor> CFL? Compact Fluorescent Light ?
[00:08:43] <CaptHindsight> my money is on the Canadian Football League :p
[00:11:21] <jymmm> lol, yes Canucks are now on solar power!!!
[00:12:20] <jymmm> Connor: correct
[00:12:37] <ssi> phew
[00:12:45] <ssi> motion rebuilt yet again :/
[00:40:13] <benjamin23> alright. I'm confused. There are seemingly many different CAD programs out there. I have come across FreeCAD, OpenSCAD, Open CASCADE, heekscad
[00:40:19] <benjamin23> what is the difference?
[00:49:59] <ssi> they're just all different
[00:50:03] <ssi> try as many as you can
[00:51:02] <PetefromTn_> Okay that turned out pretty good! Took an hour because my speeds and feeds are about a third too slow but I am just protoyping right now.
[00:52:24] <ssi> anyone around that recalls how to do the switch to teleop mode from .axisrc trick?
[00:52:38] <ssi> it works on my plasma machine, and I'm trying to do the same thing on the laser, but it's not happening for some reason
[00:52:42] <PetefromTn_> Some of those Cad programs are more oriented to 3d printing from what I undertand. Freecad is sorta similar to alibre and solidworks at least in the basic design. I think that freecad is going to be something else once they get it sorted. It is already quite powerful.
[00:58:13] <ssi> argh what the heck am I doing wrong here
[00:58:25] <ssi> I got it switching into teleop mode, but it's not running both Y joints together
[01:01:23] <PetefromTn_> wish I could help ya man but I don't know what the hell you are talking about..
[01:02:04] <ssi> haha
[01:02:50] <PetefromTn_> I got some very slight faceting on these interior pockets for some odd reason. Did not get that in the previous part. Not sure what I did different.
[01:03:08] <PetefromTn_> seriously I don't know what teleop mode is.
[01:04:15] <ssi> nontrivial kinematics have a distinction between "free mode" and "world mode"
[01:04:18] <PetefromTn_> sounds like something you need for a five axis or something.
[01:04:23] <ssi> "World mode" is also called "teleop mode"
[01:04:33] <ssi> in free mode, the joints are independent
[01:04:40] <PetefromTn_> are you driving two motors for an axis or something?
[01:04:50] <ssi> in teleop mode, the kinematics are applied so that multiple joints move to position the axes
[01:04:55] <ssi> yes, gantry
[01:05:02] <ssi> I don't know why gantry machines are so damn uncommon :P
[01:05:07] <PetefromTn_> so is that why you need that mode on?
[01:05:11] <ssi> yes
[01:05:21] <ssi> if you want independent homing on a gantry machine, this is how you have to do it
[01:05:28] <ssi> and it's sorta hacky right now
[01:05:28] <PetefromTn_> what's it doing?
[01:05:52] <ssi> well I'm homing the three joints, and I have some magic python that switches into teleop mode automatically whenever all three joints are homed
[01:06:00] <PetefromTn_> Damn this machine gives a nice finish when I get the finish pass right.
[01:06:03] <ssi> and then when I try to jog the gantry, only the right side motor is moving
[01:06:17] <PetefromTn_> OOh that is not good.
[01:06:27] <ssi> no, not good
[01:06:38] <PetefromTn_> did it pretzelize itself?
[01:07:07] <ssi> not too bad
[01:07:14] <ssi> these motors aren't real strong
[01:07:15] <PetefromTn_> that's good.
[01:07:25] <PetefromTn_> that is ALSO good LOL
[01:07:35] <ssi> plus it's belt drive, so the belt is unhappy but it's the first to give way
[01:08:02] <ssi> so one difference between this machine and the plasma machine is this one is ja5, but the plasma machine is ja4
[01:08:10] <ssi> so I tried to go down to ja4 and rebuild, but I'm getting an error
[01:08:15] <ssi> config.status: error: cannot find input file: `../scripts/linuxcnc_var.in'
[01:08:44] <PetefromTn_> yeah I know all about that. I once crashed the bejeesus out of my RF45 when I was first setting it up. Ran into the end of travel and the only thing that saved my bacon was that belt stripped out...
[01:08:59] <ssi> heh reran autogen and that seemed to clear it up
[01:09:55] <ssi> I'm done fighting with stupd electrical things, it's time to make this machine do something useful
[01:10:57] <PetefromTn_> Get er done son!
[01:11:25] <PetefromTn_> jeez man did I really just say that... GOD I gotta get out of Tennessee.
[01:12:35] <ssi> haha
[01:12:58] <ssi> I would like to "get er done", but I gotta get past this software issue first! :(
[01:13:14] <ssi> also need to get a mount made for the first bounce mirror
[01:13:28] <ssi> which means taping up the end of the machine and popping a hole in the tape with the laser to see where it's gonna hit
[01:13:34] <ssi> then designing a mount to put it roughly there
[01:13:45] <ssi> then I gotta start getting mirrors in place and aligned without burning my house down
[01:13:49] <PetefromTn_> Piece of crumb cake dude...
[01:14:02] <ssi> need to get the laser psu under linuxcnc control
[01:14:09] <PetefromTn_> can you vary the power of the laser?
[01:14:12] <ssi> yes
[01:14:21] <ssi> it takes a potentiometer input like a spindle controller
[01:14:25] <ssi> 7i76 spindle out will drive it
[01:14:32] <PetefromTn_> so you can crank it down to NON burning down the house levels then for alignment and testing?
[01:14:36] <ssi> in theory :)
[01:14:57] <ssi> yeah I guess I should work that part out first huh
[01:15:06] <PetefromTn_> stand back everybody I don't know how big this thing is gonna get LOL...
[01:15:09] <ssi> ehheeh
[01:15:28] <ssi> well I've already run it at full power
[01:15:33] <ssi> so it's all downhill from there :)
[01:15:45] <PetefromTn_> when you burned down the neighbor's house huh..
[01:15:53] <ssi> yeah
[01:16:08] <ssi> this little toy 40W laser doesn't seem to be that big a deal
[01:16:12] <PetefromTn_> still don't understand why this came out faceted?
[01:16:14] <ssi> now when I get the big monster 150W in here... :)
[01:16:30] <PetefromTn_> is it physically bigger?
[01:16:33] <ssi> much
[01:16:42] <PetefromTn_> will you have to redesign?
[01:16:48] <ssi> depends
[01:17:13] <PetefromTn_> always does heh
[01:17:25] <ssi> I have about 60" to play with as is
[01:17:30] <ssi> the biggest tubes are 1650 and 1850mm
[01:18:03] <ssi> 1850 is 74" looks like?
[01:18:09] <ssi> I'd have to add an extension for that guy heh
[01:18:16] <PetefromTn_> so the laser stays put while the gantry with reflectors runs around like crazy right...
[01:18:23] <ssi> yes
[01:18:39] <PetefromTn_> I can see why people burn up the walls easily.
[01:18:45] <ssi> yeah
[01:20:07] <PetefromTn_> So tomorrow I gotta pocket the back of this baby out and counterbore the bolt holes from the other side. I drilled and tapped a couple more holes in my fixture since the top part is smaller than the base and took advantage of the room.
[01:20:58] <PetefromTn_> Now I can use strap clamps instead of welders clamps to hold my part while I drill it and then the second side I can just clamp it down, counterbore it, then bolt thru those holes and remove the strap clamps.
[01:24:34] <ssi> oh doh I found it
[01:24:35] <ssi> sweet
[01:26:13] <PetefromTn_> what was the major malfunction?
[01:26:24] <PetefromTn_> mister?
[01:27:15] <ssi> I missed changing the coordinates parameter in the loadrt gentrivkins in hal
[01:27:27] <ssi> it still said XYZY ffrom where i copied from plasma
[01:27:31] <ssi> but this machine is just XYY
[01:31:15] <PetefromTn_> sweet.
[01:33:01] <PetefromTn_> whats anothe word for faceting?
[01:33:27] <ssi> is this like an SAT question?
[01:33:48] <ssi> this is weird... when it homes, if I have my soft limits set up so that the home position is rigcht at the limit,
[01:34:03] <ssi> then when it homes I get exceeded min soft limit error on all three joints, and it doesn't home properly
[01:34:46] <ssi> I have it set up so it homes at the back left
[01:35:00] <ssi> and so that's X0, Y0, and X increases to 48, but Y decreases to -24
[01:35:02] <PetefromTn_> I had my soft limits right near the limit and had something like that happen. I stepped it back a tad.
[01:35:52] <ssi> well but it's exceeding the MIN limit, but it homes to the MAX
[01:35:53] <ssi> I don't get it
[01:36:43] <PetefromTn_> are you using a home offset?
[01:36:45] <ssi> ah there we go
[01:36:46] <ssi> no
[01:36:56] <ssi> I bumped the JOINT limits by a tenth of an inch in all directions
[01:37:00] <ssi> but left the AXIS limits where I want them
[01:37:33] <PetefromTn_> gotsta gotsta fine tune that baby..
[01:39:20] <ssi> yeah
[01:39:28] <ssi> speaking of which, I don't think X is scaled correctly
[01:39:46] <ssi> its close, but not quite there
[01:40:14] <ssi> this is way too fast... zeeshan would get sooo mad at me
[01:40:39] <PetefromTn_> hehehe
[01:40:52] <PetefromTn_> You don't need to go that fast man!!!!
[01:41:19] <ssi> :)
[01:41:49] <PetefromTn_> Got a customers Brand New Steyr rifle breech here to make some cool parts for..
[01:41:55] <ssi> nice
[01:41:57] <PetefromTn_> Looks sweet as sugar.
[01:42:00] <ssi> I guess I should go the hell to sleep
[01:42:09] <PetefromTn_> me too.
[01:42:09] <ssi> and work on the laser psu wiring when I'm more clear :)
[01:42:16] <PetefromTn_> Gnite man.
[01:42:18] <ssi> glad I got motion mostnly sorted out
[01:42:19] <ssi> gnite
[01:42:38] <PetefromTn_> ;)
[02:07:45] <Deejay> moin
[02:16:12] <Loetmichel> mornin'
[03:10:51] <Loetmichel> hmm, i think the mill bit is strting to get dull... -> http://www.cyrom.org/palbum/main.php?g2_itemId=15074
[04:27:52] <Loetmichel> *SHIT!* *bandaid please* ... i have just cut my finger 3mm deep with a dremel cutting disc... i am SO clumsy... :-(
[04:28:56] <Deejay> autchie
[04:29:21] <archivist_herron> hehe
[04:29:49] <archivist_herron> cannot be bad you can still type
[04:30:49] <Loetmichel> no tendon servered, only blood all aover the place ,.)
[04:38:30] <gonzo_> supprising how dangerous those things are. You are working so close to the tool all the time and they easilly run off the work (Which is often hand held)
[04:38:52] <Loetmichel> right
[04:39:14] <gonzo_> I went into my hand with a routing type bit a while ago.
[04:39:41] <gonzo_> again, was lucky and minimal damage
[04:41:49] <archivist_herron> Loetmichel, provides regular entertainment methinks
[04:42:30] <Loetmichel> archivist: yes... it was funny to see the tendon work in the gash at cleaning it from steel swarf ;-)
[04:42:36] <archivist_herron> last bit of damage cant be much more than a year ago
[04:42:47] <Loetmichel> shouldnt have cut a thou deeper ,-)
[04:43:19] <Loetmichel> as i said: i am a bit clumsy sometimes
[04:44:58] <archivist_herron> one learns health and safety by a bit of self damage
[05:53:14] <gonzo_> good practice comes from experience. Unfortunatly that experience is usually as a result of bad practice
[05:59:17] <RyanS> Would this be okay for a home workshop? http://www.machines4u.com.au/view/advert/Air-Compressor-Piston-JIAD-MI-TS3-220-E3/67763/ :)
[06:00:41] <archivist_herron> you will need a larger home workshop
[06:03:32] <RyanS> ..pulls trigger on air duster gun--wall collapses
[06:05:22] <SpeedEvil> http://www.ebay.co.uk/itm/BRAND-NEW-ROTARY-SCREW-AIR-COMPRESSOR-/121390752249?pt=UK_Air_Tools_and_Compressors&hash=item1c4373e1f9 popped up near me
[06:05:27] <SpeedEvil> I'd quite like this
[06:05:45] <SpeedEvil> But alas - price is a leetle much.
[06:06:36] <RyanS> What would you do with 53cfm
[06:06:40] <SpeedEvil> Well, that, and I'd need to run a 240V/50A line
[06:07:24] <SpeedEvil> I wish scroll compressors were cheaper
[06:08:46] <jthornton> 45kva at 240v, 200 amps might run it
[06:08:55] <RyanS> You want to run jackhammer ? In case you need to demolish something
[06:10:01] <SpeedEvil> jthornton: it said 11kw
[06:10:47] <jthornton> oh your link, missed that one I was looking a RyanS link
[06:11:39] <jthornton> only 3,100 pounds
[06:11:44] <archivist_herron> I got 440 at 60A per phase, but the locals would not like the generator noise :)
[06:13:48] * jthornton is glad he doesn't have close neighbors
[06:14:19] <SpeedEvil> Also, one interesting thing I'd like to try with such a compressor is liquid oxygen generation
[06:16:23] <jthornton> how does one make liquid oxygen?
[06:16:50] <archivist_herron> freezing air
[06:19:13] <archivist_herron> nitrogen oxygen and co2 liquify at differing temperatures
[06:19:54] <jthornton> ok, that makes sense... but how to freeze air with a compressor?
[06:21:41] <archivist_herron> by cooling the hot compressed air then letting it escape through a small hole, that cools it .... a lot
[06:22:27] <archivist_herron> what happens when you let off a co2 extinguisher
[06:22:33] <Loetmichel> and then compress it again
[06:22:44] <Loetmichel> and so in until luquid
[06:22:55] <RyanS> three cylinder cast-iron pump, or 2 cylinder alloy head... Decisions decisions
[06:26:45] <jthornton> 12 cylinder Rolls Royce
[06:27:14] <RyanS> merlin
[06:32:29] <jthornton> I wasted 3GB of bandwidth yesterday to download some Rockwell software that I didn't even use yesterday while fixing a pump at a sewage pumping station... just had to change a fuse
[06:45:23] <jymmm> jthornton: Well, the month is almost over anyway.
[06:45:57] <jthornton> aye
[06:49:41] <jthornton> the worst part was I could not copy the install files to my laptop as the downloader installed then deleted the files so totally useless to me then
[10:11:59] * JT-Shop wonders if I can spin exhaust tubing on a lathe???
[10:13:06] <JT-Shop> I need to make some like the one on the right http://www.heartthrobexhaust.com/300250250.JPG
[10:13:58] <CaptHindsight> why not?
[10:14:10] <JT-Shop> they are called EURO JOINT CONNECTORS
[10:14:19] <CaptHindsight> as long as you can hold it
[10:14:27] <JT-Shop> I wonder how I might hold the tubing
[10:15:41] <CaptHindsight> http://en.wikipedia.org/wiki/File:Metal_spinning_brass_vase.jpg
[10:15:54] <CaptHindsight> looks like they use a wood lathe
[10:16:12] <JT-Shop> and a mandrel
[10:20:08] <archivist> look at some metal spinning vid on youtube
[10:20:54] <JT-Shop> I've never seen one that started with tubing only flat sheet
[10:22:12] <archivist> we has some tube modded with a similar cup, the guy used a hammer
[10:22:28] <archivist> was copper so easier to work
[10:30:37] <zeeshan> JT-Shop: do you have a press?
[10:32:29] <JT-Shop> yea, a 50 ton press
[10:32:47] <zeeshan> you can just make a mandrel on the lathe
[10:32:53] <zeeshan> and press it in :)
[10:34:42] <archivist> make sure the pipe is seamless
[10:34:53] <zeeshan> why
[10:35:15] <archivist> I bet it will split on the seam if it is
[10:35:26] <zeeshan> no
[10:36:09] <zeeshan> http://images.palcdn.com/hlr-system/WebPhotos/84/846/8468/8468092.jpg?_v=5a94e708-b43a-47fc-b9d2-56110847a5a6
[10:36:18] <zeeshan> i used those on welded aluminized pipe before
[10:36:27] <CaptHindsight> the part on the left might be done in two steps
[10:36:50] <zeeshan> he said right one :P
[10:36:58] <JT-Shop> zeeshan, I have an expander but wrong shape dies
[10:37:14] <JT-Shop> brb
[10:37:23] <archivist> and some metals are not ductile enough for that amount of stretch without annealing
[10:38:09] <zeeshan> archivist: lot of exhaustt tubing is ductile
[10:38:12] <zeeshan> you can mandrel bend it etc
[10:38:44] <jdh> machine it out of round stock
[10:44:54] <CaptHindsight> jdh: use double heavy wall pipe to save on material :p
[11:03:58] <CaptHindsight> archivist: https://www.youtube.com/watch?v=dNvdrpEmS48 steel gear, really really really close up
[11:08:37] <archivist> I wonder where that was stolen from, it has an english accent
[11:08:56] <zeeshan> archivist: have you turned discs on your lathe before
[11:09:10] <zeeshan> i was discussing this yesterday night
[11:09:27] <archivist> define disks
[11:09:48] <zeeshan> ill have about 200 octagon shaped (5.125" widest dimension) cut out of 0.032" sheet metal (stainless 304L)
[11:09:56] <zeeshan> i need to make them into 5" discs
[11:10:06] <zeeshan> disc meaning, no holes in the center of them
[11:10:19] <zeeshan> http://i.imgur.com/cSmEPBz.png
[11:10:22] <zeeshan> currently im using that
[11:10:24] <zeeshan> on a cnc mill
[11:10:33] <zeeshan> its quite annoying to use, cause i keep on having to move the center clamp
[11:11:09] <archivist> I would use a pressure pad on the lathe to clean the outside (rotating centre
[11:11:19] <zeeshan> and i can only make 5 at a time on that jig
[11:12:01] <archivist> most of the time I need a hole when making clock wheel blanks
[11:12:39] <zeeshan> the machinist at school thinks i can wedge 50 discs at a time
[11:12:53] <archivist> your pressure has to be a lot more than turning or centrifugal forces
[11:13:02] <zeeshan> and do it between two 1" thick 5" diameter plates
[11:13:09] <zeeshan> that are wedged between the chuck and tailstock
[11:13:16] <archivist> I have clamp turned on many occasions
[11:14:07] <PetefromTn_> looks like something that needed to be waterjet cut or something.
[11:14:25] <zeeshan> i told you this last night
[11:14:29] <zeeshan> it cant be waterjet cut!
[11:14:32] <zeeshan> nor laser, nor plasma
[11:14:35] <zeeshan> nor punched out
[11:14:36] <PetefromTn_> you told ME this?
[11:14:38] <zeeshan> yes!
[11:14:42] <zeeshan> you were around :P
[11:14:48] <PetefromTn_> No you didn't///
[11:14:56] <zeeshan> okay, it can be waterjet cut cause of surface finish
[11:15:05] <zeeshan> plasma, and laser cause of heat changing material properties
[11:15:06] <PetefromTn_> I may have been online but I was not privy to that convo dude..
[11:15:18] <zeeshan> and punched, because residual stress/burr
[11:15:55] <zeeshan> pete my bad :)
[11:17:17] <zeeshan> archivist: the thing is, even if i calculate the centrifugal force and cutting force
[11:17:20] <zeeshan> (estimate)
[11:17:24] <archivist> water jet will be a nice edge if the pressure is right
[11:17:35] <zeeshan> i hav eno way to determine
[11:17:41] <zeeshan> the tail stock clamping pressure
[11:17:58] <archivist> just make it "tight"
[11:18:05] <zeeshan> archivist: http://www.wolverinemachine.com/images/Edge%20Finishes_big.jpg
[11:18:19] <zeeshan> its more apparent on thicker pieces, but its the same for thinner sheet
[11:18:47] <archivist> finr is also straighter iirc
[11:18:59] <archivist> and costs more
[11:19:18] <zeeshan> also waterjet i got quoted $10 per disc
[11:19:24] <zeeshan> i dont think my prof wants to pay 2000$ in samples
[11:19:25] <zeeshan> :D
[11:19:44] <jdh> hold a bake sale.
[11:20:00] <zeeshan> archivist: in your expert opinion
[11:20:10] <zeeshan> do you think 50 discs can survive not flying out and killing me
[11:20:10] <zeeshan> :D
[11:20:56] <archivist> I might be more careful in the qty
[11:21:17] <archivist> how slippery are the disks etc
[11:21:33] <zeeshan> i cant find the coefficient of friction of stainless on stainless
[11:22:36] <jdh> spray glue?
[11:23:28] <Smidge204__> http://www.efunda.com/forum/show_message.cfm?start=1&thread=3903&id=3903
[11:23:43] <Smidge204__> Steel on steel frictions
[11:24:08] <zeeshan> .9!!
[11:24:11] <zeeshan> nice!
[11:24:15] <zeeshan> thank you
[11:24:29] <Smidge204__> I googled "coefficient of friction of stainless on stainless" and that was the first result >.>
[11:24:36] <zeeshan> haha, i did the same
[11:24:39] <zeeshan> how come it didnt show up ofor me
[11:24:44] <zeeshan> "coefficient of friction stainless on stainless"
[11:24:47] <jdh> google.ca
[11:25:03] <Smidge204__> You're not 1337 enuf
[11:25:16] <archivist> see how stable the set up is and experiment
[11:25:51] <Smidge204__> jdh: it does seem like google search is not consistent between regions, which is really annoying
[11:26:30] <archivist> it tries to be "helpful"
[11:26:47] <PetefromTn_> Could you machine some kinda nice clamp mandrel and grind them to size slowly against a wheel or belt?
[11:26:50] <Smidge204__> Don't be "helpful" Google - be useful!
[11:26:59] <CaptHindsight> isn't also based on your searching and website habits
[11:27:10] <Smidge204__> CaptHindsight: Just the ads AFAIK
[11:27:11] <zeeshan> PetefromTn_: grinding will change local material properties
[11:27:19] <zeeshan> specimens are lab grade
[11:27:36] <zeeshan> so i really need to minimize distoritions, heat, residual stresses
[11:27:39] <zeeshan> or the data won't be trust worthy
[11:27:49] <zeeshan> thats why im sticking to either milling or turning
[11:27:50] <archivist> so will turning, water jet might be the best
[11:27:57] <PetefromTn_> I would imagine a slow grind would not introduce any more heat than turning would.
[11:28:13] <zeeshan> archivist: much lower residual stress
[11:28:16] <archivist> water jet includes cooling
[11:28:20] <PetefromTn_> especially if it was wet ground..
[11:28:33] <Smidge204__> Lots and lots of lapping
[11:28:51] <archivist> I imaging wet ground will be almost identical to water jet fine
[11:29:05] <CaptHindsight> is this found stainless, since the forging was probably hot :)
[11:29:45] <archivist> cold rolled v hot rolled and polished
[11:36:00] <CaptHindsight> zeeshan: I've been quoted some crazy high waterjet prices recently as well
[11:37:32] <CaptHindsight> but whenever I stop in they aren't running the machines, so I think they just aren't busy and are desperate
[11:38:19] <PetefromTn_> Honestly the shop I worked in had reasonable pricing for the waterjet sheet stuff but honestly anything reasonably thick looked like shite.
[11:38:55] <archivist> zeeshan, dont stack too many due to burs and edge defects, as you machine the stack the pressure they were under will be reduced, needing pressure take up or loss of friction
[11:39:11] <zeeshan> yea
[11:39:14] * zeeshan is calculating forces
[11:39:55] <archivist> only 20 operations at 10 a time
[11:52:48] <zeeshan> ok im getting like 60 lb resulstant force
[11:52:57] <zeeshan> if i do 0.030" doc
[11:52:59] <zeeshan> er
[11:53:16] <zeeshan> yea, 0.030" doc, 0.002" ipr, 304 ss
[11:53:32] <zeeshan> so even if i provided 100lb of clamping pressure
[11:54:12] <zeeshan> that means, the friction generated will be F_f = 2*coeff friction*clamping force = 2*0.9*100
[11:54:27] <zeeshan> 180lb..
[11:58:36] <jymmm> I have some 1/16" copper tubing, is there a way I can cut it without flaring/deforming it?
[12:02:48] <cradek> a tubing cutter will mush it inward a bit, but then you use the blade on it to trim the inside a bit
[12:03:18] <cradek> otherwise, a jeweler's saw or other very fine toothed saw
[12:03:45] <cradek> or maybe cut it on your bench grinder and then clean up and square it with a file
[12:03:53] <cradek> (guess I can think of lots of ways)
[12:05:03] <jymmm> The tubing cutter deforms WAY too much, this is thin wall stuff. Ok, I can try the jeweler's saw with an insert in the tubing
[12:05:05] <jdh> I have some 1/8" SS and it is hard to keep the ID clean even with grinding/saw/etc. Pretty much everything I did required reaming the ID
[12:05:18] <jdh> 1/16" would be much worse I bet.
[12:08:00] <jymmm> Technically, it's actually smaller than that as I'm "nesting" tubing to get a .02 - .03" opening
[12:08:55] <jdh> vs. a semi-precision orifice?
[12:09:20] <jymmm> jdh: pretty much.
[12:11:48] <jymmm> I really don't know what ID I'll end up with that works, so just starting at a certain point, and reducing as I need to. I believe the hole you would find in a basketkball inflation needle is what I need.
[12:12:19] <jdh> you just want flow restriction?
[12:12:49] <jdh> I've used machine screws into a brass NPT-Barb adapter
[12:13:44] <jymmm> I'm increasing pressure. My lil vacuum pump doesn't provide what I need at 1/8", but it does what I reduce it down.
[12:13:58] <jymmm> s/what/when/
[12:16:08] <jymmm> Eh, I suppose I could partially pinch/crimp the 1/8" down some and see what I come up with.
[12:16:40] <jdh> http://www.nuvair.com/store/media/analyzer/9517.png
[12:17:21] <cradek> I needed 7/16 gas line to fix my antique stove, so put an appropriate drill inside 1/2 and spun/mashed it down on the ends to fit the old fittings
[12:17:34] <jdh> I've done something like that. The inner male NPT was tapped and bolt tightened until desired flow was obtained. Just for flow restriction
[12:17:35] <cradek> copper is really malleable
[12:18:05] <jymmm> cradek: good idea on the drillbit
[12:18:26] <Connor> I've got some 1/4 NPT swivel connectors coming.. They're for air.. I'm hoping they'll work okay with coolant.
[12:18:32] <cradek> yeah that's important if you need it to end up round... otherwise you tend to get something like a rounded triangle
[12:18:41] <jymmm> Now to see if I have a #76 drill bit =)
[12:18:46] <Connor> Designing a Servo based Nozzle.
[12:18:53] <cradek> heh, I sure do...
[12:19:28] <jymmm> heh
[12:19:45] <IchGuckLive> hi all B)
[12:19:59] <jymmm> Ok, cool. I'll give that a shot. thanks!!!
[12:20:04] <cradek> if you need a #76 orifice why not just drill yourself one in something convenient?
[12:21:26] <Connor> I need to make a short stubby Nozzle that'll screw into the 1/4 NPT right angle connector..
[12:21:39] <jymmm> I'm adding air assist to my laser, there really is no place to "mount" a block of anything on the head. But I've worked out a way to secure a 1/8" tubing to it
[12:21:41] <Connor> I have a 1/4 NPT tap and die! :) Thankfully.
[12:21:58] <jdh> tapping npt sucks
[12:22:24] <Connor> jdh: Tell me about it.. I tapped my manifold.. 4 holes.. took forever.
[12:22:44] <jdh> I somehow acquired a 1/4 NPT drill/reamer thingie
[12:22:48] <Connor> jymmm: You ever fix your lasers issue ? I don't remember what it was..
[12:23:03] <Connor> jdh: Oh nice.. I bet that makes it a tad easier.
[12:23:05] <jymmm> Connor: the laser tube
[12:23:31] <Connor> jymmm: Was it the tube? Was it like not working in one direction, but was in the other or something ?
[12:23:58] <jymmm> Connor: It led a good life for 12 years, just needed to be replaced.
[12:23:59] <jdh> came with about 20 or so perfect NPT taps
[12:25:03] <Connor> jymmm: What exactly happens in the laser tubes? The gas leaks out / burns up ? or the mirror degrades ?
[12:25:54] <jymmm> Connor: In my, it could be the gas is depleted, the RF Boards go south, etc
[12:27:30] <Connor> Anyone else seen the new Transformers movie ?
[12:27:46] <jymmm> NO SPOILERS PLEASE
[12:28:14] <Smidge204__> Spoiler: Shit blows up, plot makes no sense
[12:28:31] <Connor> Nah. I was going to talk about some of the man made robots in it.
[12:28:48] <Connor> I recognized several from the hobby robotics community
[12:28:50] <jymmm> Smidge204__: That's every romantic comedy, DUH!
[12:29:18] <Smidge204__> Michael Bay is famous for his RomCom summer blockbusters.
[12:33:47] <k6mle-CNC> If my gcode tells an axis to move an inch, but the actual movement is about .125", what scale variable do I need to adjust?
[12:38:49] <k6mle-CNC> This is with a 5i25 connected to a G540 ...
[12:42:02] <Loetmichel> re @ home
[12:44:49] <IchGuckLive> hi dnaleromj
[12:45:12] <dnaleromj> Howdy!
[12:45:16] <dnaleromj> Lurking here as usual!
[12:47:46] <IchGuckLive> ;-)
[12:48:51] <Loetmichel> btw: nice side effect of cuutting into the finger: the back pain i have since this night ( managed to dislocate a short rib in sleep) went away instantly. i could instantly move again. that effect lasts 'til about now, i feel the back pain slowy coming back ;-)
[13:01:15] <pcw_home> k6mle-CNC: the ini file variable for setting stepper system scale is OUTPUT_SCALE
[13:09:36] <chally_> jymmm, don't know if yhou have solved your copper tube problem, but I use a cutoff wheel to cut small copper tube (down to .020" ID) all the time
[13:09:58] <chally_> dremel works fine, although I have a big one
[13:10:09] <chally_> er, i have a large cutoff saw
[13:11:05] <Smidge204__> Bandsaw and a light touch
[13:12:24] <Smidge204__> Oh wait, 1/16" diameter, not wall thickness
[13:14:03] <chally_> the other option is to put a dowel pin on the correct size in it and use a normal tubing cutter.
[13:14:12] <chally_> or a gauge pin if you are feeling lucky :D
[13:40:03] <CaptHindsight> pcw_home: how is the USB hm2-eth testing going? any spikes yet?
[13:41:50] <pcw_home> Yep 8 ms a couple of hours into the test (just done for a joke really)
[13:42:13] <CaptHindsight> it was surprising to see it run so long
[13:43:01] <pcw_home> Me too I really expected it to stumble immediately at 2 KHz
[13:44:00] <pcw_home> not sure what triggered the delay (I unplugged/plugged the mouse to no effect)
[13:45:18] <CaptHindsight> I'll get spikes the first time I plug in a USB device, then reset the test and plug/unplug and not get the same spike again
[13:45:58] <Tom_itx> maybe it's because they're powered devices
[13:46:07] <CaptHindsight> same with playing flash in firefox, first startup is always the biggest bump
[13:46:14] <Tom_itx> then the caps are charged up for the 2nd round
[13:46:56] <CaptHindsight> try it with a flash drive
[13:46:58] <pcw_home> firefoxescaps are charged?
[13:47:07] <Tom_itx> uh huh ;)
[13:47:18] <Tom_itx> FF is just damn slow
[13:47:30] <Tom_itx> and won't shut up about updates
[13:47:42] <CaptHindsight> plug then unplug, wait a minute, then plug again without spikes
[13:47:55] <pcw_home> maybe loading the driver
[13:50:47] <CaptHindsight> we are going to look into it further now as well as video drivers
[13:52:05] <CaptHindsight> I installed Linuxcnc on a few different distros on the same drive so I can test 5-6 installs on different hardware
[13:55:25] <CaptHindsight> what's odd is running the latency test 8 hours while beating it up and getting 8K, then you reboot and get 13K after 2 minutes
[13:57:31] <jymmm> CaptHindsight: You hit like a girl
[13:57:50] <ssi> jymmm: what did you do with your old rf laser? was it an exchange?
[13:58:07] <CaptHindsight> jymmm: oh yeah?
[13:58:24] <jymmm> CaptHindsight: Yeah!
[13:59:08] <jymmm> CaptHindsight: rebooting hits harder than you do!
[13:59:20] <jymmm> ssi: Why, you want to buy it?
[14:00:23] <ssi> depends on the price and how dead it is ;
[14:00:24] <ssi> :)
[14:00:33] <ssi> mostly just curious
[14:00:40] <ssi> was looking at the differences between dc and rf lasers
[14:00:41] <jymmm> Uh, uh
[14:00:45] <ssi> rf lasers sound awesome but for the price
[14:30:57] * jthornton finally got the crawler to steer correctly!
[14:31:04] <jthornton> on to the next issue
[15:07:09] <ssi> PetefromTn_: "Note that for this low current, the discharge is not very bright. If you're used to HeNe lasers, don't be fooled into thinking the tube isn't working as it burns a hole through your wall and the neighbor's. :)"
[15:07:58] <PetefromTn_> LOL Be careful damnit!
[15:08:02] <ssi> hahaha
[15:08:15] <PetefromTn_> Well just got back from a meeting with my customer!
[15:08:16] <ssi> tonight I start the alignment process :D
[15:08:19] <ssi> how'd it go?
[15:08:21] <PetefromTn_> He is loving the parts I made.
[15:08:25] <ssi> excellent
[15:08:28] <ssi> are these more rifle parts?
[15:08:47] <PetefromTn_> He says he thinks once we get the prototype finished and tested it will be a hot item.
[15:08:59] <PetefromTn_> no this is for the tuner car crowd.
[15:09:02] <ssi> ahh
[15:09:19] <PetefromTn_> Specifically those that are addicted to the beautiful swoopy fast third gen Mazda RX7
[15:09:33] <ssi> nice
[15:09:39] <PetefromTn_> The good news is that the part I made fit the car perfectly.
[15:09:39] <ssi> you can make parts for all three people who still have them!
[15:09:57] <PetefromTn_> Shit there are probably a dozen of them just in their shop right now!
[15:10:12] <PetefromTn_> Some are putting down some serious horsepower.
[15:10:23] <PetefromTn_> I sat in one today when I was over there.
[15:10:42] <PetefromTn_> It was a nice red one resplendent with wheels, wings, and big turbo.
[15:10:45] <ssi> yeah, a high horsepower turbo rotary is a thing to behold
[15:10:59] <PetefromTn_> I gotta say it was a beutiful car.
[15:11:07] <PetefromTn_> However it is TIGHT inside that thing.
[15:11:28] <PetefromTn_> I was surprised that the steering wheels do not either tilt or telescope apparently.
[15:11:52] <PetefromTn_> Getting comfortable in the car required considerable jockeying of the seat position.
[15:12:03] <PetefromTn_> However once you are in there it is a nice place to be ;)
[15:12:18] <PetefromTn_> I am not that big a fellow but not exactly small either.
[15:12:29] <PetefromTn_> I am about 6' and 225 lbs or so.
[15:12:55] <PetefromTn_> I will say that I am kinda getting addicted to these things.
[15:13:26] <PetefromTn_> The owner of the shop has a SWEET all silver one that is mild build with custom leather interior that I often drool over.
[15:13:47] <ssi> you get attached to other peoples' hobbies easily, huh? ;)
[15:13:58] <ssi> it's ok, I do too
[15:14:01] <PetefromTn_> He is apparently going to remove some of the goodies and sell it because he has been stricken with some other car.
[15:14:20] <PetefromTn_> well more precisely I get attatched to beautiful, fast, nice things LOL
[15:14:30] <PetefromTn_> Unfortunately my income does not permit most of it LOL
[15:15:31] <PetefromTn_> He said he is gonna sell it for around $14k so it is a realizable dream anyways. Not like I was drooling over a veyron or something LOL...
[15:17:41] <ssi> you don't need a project like that :P
[15:17:54] <PetefromTn_> NOBODY NEEDs a project like that..
[15:18:15] <PetefromTn_> But since it is not a project but rather a nice running low mileage car I sure would LIKE having it.
[15:18:34] <PetefromTn_> He said it has about 350-400 HP.
[15:19:20] <PetefromTn_> He does have a nice Toyota Supra with a HUGE turbo on it there too. That is HIS project car right now. Apparently it has nearly 1k HP.
[15:19:44] <PetefromTn_> When they started it from what I heard I have NO reason to doubt that LOL. Its a monster.
[15:22:18] <PetefromTn_> anyways, after meeting with him he was excited about the project and told me he has some kinda custom bracket mount he wants to produce for the cars as well that will be the next project. He said that we probably should have started with that project first actually because he has a lot of requests for it.
[15:31:19] <benjamin23> hello
[15:31:30] <benjamin23> I have some questions
[15:31:54] <benjamin23> regarding differences between CAD programs that I've come across so far
[15:32:38] <PetefromTn_> I'm sure we all do hehe
[15:33:29] <benjamin23> ha! well I'd like to cut/mill parts from plastic/wood/metal sheets
[15:33:55] <benjamin23> I'm aware that gEDA already creates g-Code, so I think I'm good with PCB milling
[15:34:28] <benjamin23> There is FreeCAD, OpenSCAD, heekscad, OpenCASCADE, Blender, and Wing3D
[15:34:32] <benjamin23> what is the difference?
[15:34:45] <PetefromTn_> do you need 3d?
[15:34:50] <benjamin23> some are parametric 3D and others are solid 3D
[15:34:54] <PetefromTn_> are you only doing sheet goods?
[15:35:06] <ssi> btw
[15:35:10] <benjamin23> no, but first I will to get the general idea of how this stuff works
[15:35:12] <ssi> cad doesn't create g-code
[15:35:36] <ssi> cad is the part where you draw something... cam is converting drawings to toolpaths/gcode
[15:35:42] <PetefromTn_> and Blender is not what I would consider for Cad Cam work. IF you want to make cartoons or movies it kicks ass tho.
[15:35:44] <ssi> also, cad is the EASY PART
[15:35:53] <benjamin23> hahahaha
[15:35:58] <benjamin23> ok
[15:36:20] <benjamin23> so, if we can, start from the genisis
[15:36:24] <PetefromTn_> Do you need 3d?
[15:37:33] <benjamin23> eventually I will need 3D to drop plastic
[15:37:45] <ssi> "drop plastic"?
[15:37:54] <ssi> is that a euphemism for 3d printing?
[15:37:58] <benjamin23> yes
[15:38:11] <benjamin23> just link an inkjet printer drops ink droplets
[15:38:46] <PetefromTn_> understand that basically 3d printing is a huge departure from typical subtractive process machining.
[15:39:00] <benjamin23> ????????
[15:39:21] <benjamin23> is subtractive, in ID10T terms one layer at a time type thing?
[15:39:35] <ssi> subtractive is using a tool to cut something away
[15:39:43] <benjamin23> go it
[15:39:46] <benjamin23> got it
[15:39:48] <PetefromTn_> subtractive meaning you start with a big block of material and whittle away what is NOT the part.
[15:40:41] <benjamin23> ok, so for 2D milling, can the a same program be used also with making 3D designs?
[15:40:57] <PetefromTn_> depends on the program
[15:41:05] <PetefromTn_> but yea generally.
[15:41:18] <PetefromTn_> I use Freecad to do my 3d modeling for instance.
[15:41:50] <PetefromTn_> Then when I get the design sold I often wind up taking the model and converting it to 2d dxfs and taking that into my cam package to machine 2d
[15:42:20] <Tom_itx> i thought you were useing cambam
[15:42:27] <PetefromTn_> You can do an awful lot of stuff with intelligent 2d milling.
[15:42:30] <PetefromTn_> I am
[15:42:47] <PetefromTn_> that is CAM
[15:43:13] <CaptHindsight> http://www.ebay.com/itm/CNC-Shark-HD-2-0-Refurbished-Full-1-Year-Warranty-/141351373246 is this version made any better than the imports or just 2-3x the price?
[15:43:15] <Tom_itx> so you don't draw it in cambam?
[15:43:23] <PetefromTn_> hell no.
[15:43:52] <PetefromTn_> honestly I either draw it in freecad or if it is a real simple quick thing I use an autocad clone.
[15:44:13] <benjamin23> alright. What is OpenSCAD
[15:44:21] <Tom_itx> txt based cad
[15:44:25] <Tom_itx> kinda sucks
[15:44:27] <Tom_itx> imo
[15:44:48] <Tom_itx> reprappers love it
[15:44:50] <PetefromTn_> For instance this assembly I am building right now I modeled in freecad in 3d and then converted to 2d .DXF's to machine the parts.
[15:45:01] <PetefromTn_> what is txt based cad?
[15:45:11] <benjamin23> txt based? so instead of a GUI, everything is done from the command line?
[15:46:03] <PetefromTn_> From what I understand openscad is more for 3d printer guys but I have no experience with it.
[15:46:24] <Tom_itx> module example002()
[15:46:24] <Tom_itx> {
[15:46:24] <Tom_itx> intersection() {
[15:46:24] <Tom_itx> difference() {
[15:46:24] <Tom_itx> union() {
[15:46:25] <Tom_itx> cube([30, 30, 30], center = true);
[15:46:29] <Tom_itx> for example.
[15:46:30] <PetefromTn_> Apparently Freecad has been somehow setup to be able to accept models done in Openscad now
[15:46:57] <PetefromTn_> Meh I will take a parametric modeler over that any time thanks.
[15:47:18] <Tom_itx> i can import them into solidworks
[15:47:27] <ssi> I like openscad ok
[15:47:32] <PetefromTn_> Having used Solidworks a good bit and then Alibre Cad and currently Freecad they are all quite similar in how you do things.
[15:47:42] <ssi> it's good for the reprapper crowd because the objects are easy to share
[15:47:54] <benjamin23> ok, so FreeCAD for subtractive milling
[15:47:54] <PetefromTn_> that is exactly how I understand it.
[15:48:10] <ssi> but I mostly use solidworks
[15:48:11] <PetefromTn_> no actually Freecad for 3d modeling.
[15:48:13] <ssi> because I'm fluent in it
[15:48:21] <benjamin23> OpenSCAD for starting with nothing and ending with something
[15:48:22] <PetefromTn_> Solidworks kicks ass man.
[15:48:25] <ssi> and nothing worth a shit runs on osx, so if I'm stuck with a vm, I might as well go all the way
[15:48:43] <ssi> I guess I could give freecad another shot
[15:48:51] <ssi> but that doesn't solve the cam problem, does it
[15:49:02] <PetefromTn_> benjamin23 No man the addititive process or subtractive process really has nothing to do with the Cad in 3d.
[15:49:12] <benjamin23> I'm lost
[15:49:32] <PetefromTn_> OpenScad or freecad are what you use to create the model of the part you want to make.
[15:49:55] <benjamin23> ok. then what
[15:50:00] <PetefromTn_> then you take it into a Cam program to machine it in subtractive process.
[15:50:22] <PetefromTn_> or whatever you use for 3d printing programming which I am not too familiar with.
[15:50:34] <PetefromTn_> You can ask SSI what he uses he is quite good at that.
[15:51:15] <PetefromTn_> think of CAD as the design phase and Cam as the actual programming the machine phase.
[15:51:56] <benjamin23> and linuxCNC takes the g-code produced by the CAM programmed and causes motor movement?
[15:51:58] <PetefromTn_> CAD--- Computer Aided Design CAM ----Computer Aided Manufacturing or machining
[15:52:23] <PetefromTn_> linux CNC interprets the code generated by the CAM program and turns it into machine movements yes..
[15:53:29] <PetefromTn_> understand that the CAM is not automatic whatsoever. There is a LOT of careful thought and setup in CAM that take some experience and understanding of milling and turning processes.
[15:53:30] <Tom_itx> openscad spits out the gcode in layers for their repraps
[15:53:44] <PetefromTn_> yes that is true as I understand it Tom.
[15:53:49] <benjamin23> reprap?
[15:53:56] <PetefromTn_> like I said I am not into 3d printing.
[15:53:57] <Tom_itx> glue gun
[15:54:13] <benjamin23> the plastic extruder?
[15:54:14] <lv-esad> hi there
[15:54:16] <PetefromTn_> reprap is a name for DIY 3d printers and that genre'
[15:54:40] <lv-esad> I just bought a chinese 6040
[15:54:50] <PetefromTn_> nice.. hows it work?
[15:55:01] <lv-esad> but there is no information with to configure it
[15:55:02] <ssi> Tom_itx: openscad doesn't
[15:55:12] <lv-esad> someone to help me ?
[15:55:13] <zeeshan> busy in here today
[15:55:15] <ssi> openscad generates STL files, and a slicer creates gcode
[15:55:18] <malcom2073> reprap is the name for self replicating 3d printers
[15:55:19] <ssi> the slicers are CAM
[15:55:25] <Tom_itx> err slicer.. yes
[15:55:28] <Tom_itx> i forgot
[15:55:40] <PetefromTn_> yeah but isnt the slicer part of openScad or works within it?
[15:55:44] <ssi> no
[15:55:48] <Tom_itx> no it's separate
[15:56:13] <PetefromTn_> they talked about it quite a bit on Freecad forum and how it works. They are trying to integrate some of what that stuff is into Freecad currently.
[15:57:18] <benjamin23> interesting. I like the idea of command line/scripting. While that may seem like a real pain to some, it can be done with a cheap computer or tablet, and then loaded into the computer that will actually do something.
[15:57:22] <PetefromTn_> is that what you use ssi?
[15:57:37] <ssi> si what what I use?
[15:57:42] <PetefromTn_> slicer
[15:57:47] <benjamin23> I use thin clients for other projects, and I like the idea of that. If, I understand if that is what openscad is
[15:57:51] <ssi> I use a slicer called "slic3r"
[15:58:02] <zeeshan> i'll slice you SSI
[15:58:20] <malcom2073> Oh my.
[15:58:21] <zeeshan> and 3d print a replica of you that uses 600ipm rapids
[15:58:25] <zeeshan> :-)
[15:58:26] <zeeshan> jk!!
[15:58:34] <malcom2073> There are a variety of slicers available for converting models into 3d printer gcode
[15:58:47] <malcom2073> Much like there are a variety of CAM packages for converting models into toolpaths
[15:59:01] <ssi> zeeshan: D:
[15:59:11] <ssi> zeeshan: you'll be happy to know my Y axis is only happy at 900ipm max
[15:59:12] <zeeshan> did you hook up your dryer
[15:59:15] <ssi> no not yet
[15:59:20] <zeeshan> why only 900 ipm
[15:59:24] <zeeshan> are you using stepper or servo
[15:59:26] <ssi> stepper
[15:59:31] <zeeshan> thats pretty fast for steppers
[15:59:33] <ssi> it's bigger and heavier than the head car
[15:59:37] <zeeshan> what drive ratuio
[15:59:37] <ssi> it's not that freakin fast!
[15:59:42] <ssi> it's belt drive
[15:59:49] <zeeshan> 3:1?
[15:59:57] <ssi> no I mean the axis is belt
[15:59:59] <ssi> 1:1 on the drive pulleys
[16:00:02] <zeeshan> oh
[16:00:03] <zeeshan> wow
[16:00:07] <ssi> 1.44" per rev
[16:00:10] <zeeshan> no wonder youre using mesa
[16:00:13] <benjamin23> what is a tool path? the block of CNC instruction?
[16:00:20] <zeeshan> cause youre pulsing fast
[16:00:27] <malcom2073> benjamin23: It's the path that your tool takes?
[16:00:30] <benjamin23> for a said/given axis moverment?
[16:00:34] <benjamin23> hahah
[16:00:36] <benjamin23> no
[16:00:38] <PetefromTn_> the tool path is the actual path the tool takes you setup in Cam
[16:00:38] <ssi> I use mesa because software stepping is for schlubs
[16:00:44] <ssi> and because I like flexible IO
[16:00:45] <zeeshan> fak you
[16:00:47] <Tom_itx> it's the pencil on the paper
[16:00:49] <zeeshan> it works fine!
[16:00:56] <ssi> and because PCW is a boss
[16:01:10] <PetefromTn_> MESA is awesome stuff man.. Period.
[16:01:12] <zeeshan> im likely going to usa mesa
[16:01:18] <zeeshan> use mesa if i convert the mill to cnc
[16:01:18] <ssi> it'll change your life
[16:01:22] <malcom2073> Mesa is nice, I'm still debating it
[16:01:28] <zeeshan> malcom2073: no reason to debate it
[16:01:31] <Tom_itx> zeeshan you'd be silly not to
[16:01:32] <ssi> it's so cheap for what it does for you
[16:01:39] <ssi> best value in cnc, hands down
[16:02:04] <Tom_itx> best online support hands down
[16:02:04] <PetefromTn_> it is cheap, reliable, and just plain works and you have Pete from Mesa here to help if you manage to blow it up ;)
[16:02:05] <malcom2073> zeeshan: Yeah there is, my BBB does alright, Iv'e yet to decide if I want to switch back to a full PC
[16:02:07] <ssi> Tom_itx: that too!
[16:02:24] <ssi> I'm terrified that one day pcw will figure out what his stuff is worth and raise the prices :)
[16:02:34] <PetefromTn_> hehe
[16:02:39] <Tom_itx> stfu!
[16:02:55] <malcom2073> On the other hand, 2mhz step clock is quite attractive :-D
[16:03:07] <PetefromTn_> Love the FPGA cards and their almost limitless flexibility.
[16:03:19] <ssi> I've never had an issue with steprate... it's just something I don't think about
[16:03:20] <PetefromTn_> TONS of I/O if you want it.
[16:03:35] <ssi> and I don't worry about jitter either, because my base thread is 1ms
[16:04:06] <ssi> and I don't have to sweat to try to figure out how to cram all my hardware into 17 IO :)
[16:04:57] <ssi> PetefromTn_: I think we figured out why zeeshan is mad about my axis speed... he's jealous of my step rate ;)
[16:05:25] <malcom2073> I think when I get around to building my router I'll usea mesa board, since I'll have space for the full PC, and will want endstops and a tool changer and all sorts of other cool I/O :P But that's down the line
[16:05:25] <zeeshan> your step rate is pointless for my application
[16:05:28] <zeeshan> :)
[16:05:32] <PetefromTn_> aw hell man he is just plain jealous of your HUGENESS!! LOL
[16:05:48] <zeeshan> ssi youre gonna take that?
[16:05:50] <zeeshan> pete called you fat
[16:05:57] <PetefromTn_> snicker..
[16:05:59] <zeeshan> :D
[16:06:03] <ssi> zeeshan: that's ok, he's earned that right
[16:06:29] <PetefromTn_> https://www.youtube.com/watch?v=SKm5xQyD2vE
[16:07:07] <PetefromTn_> I gotta design the pocketing of this part here and get it machined tonight.
[16:07:41] <Tom_itx> naw, waste some more time here first
[16:07:54] <PetefromTn_> I sure can waste time here man. TOO much time.
[16:08:04] <ssi> you and me both buddy
[16:08:09] <ssi> at least I'm wasting someone else's time right now
[16:08:10] <PetefromTn_> Honestly most of the time I am doing Cad Cam stuff while I am chatting.
[16:08:31] <PetefromTn_> I am a good multi tasker NOT.
[16:18:12] <ssi> tonight I need to get the spindle output hooked up to my tube power supply so I can control current via software
[16:18:54] <ssi> then I can try to get the tube pretty well centered and leveled in the frame, tape up the side of the machine, and pop a hole in the tape to find the beam location, measure that and make a first mirror mount
[16:25:00] <Deejay> gn8
[16:57:29] <anarchos2> what's the best way to wire up my motors to my driver/control box? I'm running 8 wire steppers in parallel...would it be better to get 8 wire connectors, then run 4 wires to my controller from the back of the connector, or run 8 wires all the way to my driver?
[16:57:40] <anarchos2> seems like just running 4 inside of my box would make it a bit neater
[16:58:19] <anarchos2> also i could get 4/20 wire probably...would be much easier than finding 8/20 wire (or running 8 strands seperately)
[17:00:53] <Tom_itx> isn't 20ga a bit thin?
[17:01:23] <anarchos2> i'm pretty sure they leads on my motor are 20ga
[17:01:29] <anarchos2> i should double check :P
[17:01:47] <anarchos2> they're only nema 23, 2.something amps each
[17:02:22] <anarchos2> the leads coming out of the motor are actually 22ga
[17:02:29] <Tom_itx> i used a spool of 4/18 shielded
[17:03:01] <Tom_itx> i'd certainly use shielded wire whatever way you go
[17:04:47] <anarchos2> yeah. i think i might go with these, http://www.cnc4pc.com/Store/osc/product_info.php?products_id=296?osCsid=0f0b4b109322de9940c4fdab402ea3a3
[17:05:19] <anarchos2> they come with a 4 pin connector, so i could go from 8-4 wires at that connector, get another matching connector to pass through my box
[17:06:02] <anarchos2> and make up some connector cables, 4/20 probably
[18:04:01] <CaptHindsight> https://www.osadl.org/Combined-latency-plot-of-all-RT-systems.qa-latencyplot-allrt.0.html?latencies=&showno= interesting preempt_rt latency plots of ~100 systems x86, ARM and Mips
[18:37:34] <CaptHindsight> http://www.youtube.com/watch?v=gK14SaaYMoc linuxcnc laser galvo scanner
[19:20:14] <zeeshan> http://www.youtube.com/watch?v=bvHMVkfweCc
[19:20:15] <zeeshan> sex
[19:21:46] <CaptHindsight> zeeshan: what did you decide on using for measuring the physical distortion?
[19:21:59] <zeeshan> for?
[19:22:36] <CaptHindsight> was it small metal plate samples?
[19:22:50] <zeeshan> im making 5" discs
[19:23:42] <CaptHindsight> maybe I've have you project mixed up with another, but will you measuring the deflection when it's under stress?
[19:24:17] <zeeshan> no
[19:24:17] <zeeshan> hehe
[19:24:29] <CaptHindsight> nevermind :)
[19:24:33] <zeeshan> i used phototelegrammetry
[19:24:36] <zeeshan> *use
[19:24:51] <zeeshan> photogrammetry
[19:24:55] <zeeshan> i dunno why i added tele
[19:25:12] <CaptHindsight> measured from afar :)
[19:26:38] <CaptHindsight> http://vision-supplies.com/p/80982/sick-od5-25t01 deciding on buy vs build again
[19:27:03] <zeeshan> what are you trying to do
[19:28:22] <CaptHindsight> non contact distance measurement over a short range <10mm with ~1um accuracy
[19:28:52] <zeeshan> are you trying to track a bunch of points
[19:28:54] <zeeshan> on a surface?
[19:28:55] <CaptHindsight> well <10um accuracy
[19:28:57] <zeeshan> or just a single point
[19:29:23] <CaptHindsight> small area 5x5mm
[19:29:49] <CaptHindsight> the delta over that area will be <1mm
[19:30:27] <zeeshan> look into the aramis 3d system by gom
[19:30:30] <zeeshan> see if it fits your needs
[19:30:35] <zeeshan> its pretty intense / flexible
[19:30:56] <zeeshan> if you dont need live strain measurements
[19:31:01] <zeeshan> you can go with argus by gom
[19:31:42] <CaptHindsight> this is just non-contact surface probing parts down an assembly line
[19:32:30] <CaptHindsight> you just want to know where the surface is as it goes by but the parts are in trays with walls higher than the parts
[19:33:09] <CaptHindsight> so a line CCD or a camera is out
[19:34:13] <CaptHindsight> laser triangulation is fast enough
[19:34:55] <CaptHindsight> 10khz scan speed at 2um res
[19:36:55] <PetefromTn_> ..
[19:40:30] <CaptHindsight> http://www.ebay.com/itm/Keyence-Laser-Triangulation-3-Sensor-AMAT-Array-LM10-ANR11501-50mm-5micron-/181427097559
[19:52:30] <XXCoder> zeeshan: jeez
[19:52:39] <XXCoder> its cutting steel so hard swarf is glowy
[19:53:22] <alexchally_cnc> so, got my servos running, next problem, it now sounds like there is a speaker inside the servo drivers that is screaming at me
[19:53:30] <alexchally_cnc> at like.... 1kHz or so
[19:56:34] <CaptHindsight> alexchally: from the driver or the motor?
[20:05:59] <alexchally_cnc> mmmm i figured it out, it was just dithering really, really fast
[20:06:34] <alexchally_cnc> but I have my x axis running, it moves distances happily, and in the correct direction
[20:06:35] <CaptHindsight> the fun of tuning :)
[20:17:29] <ssi> CaptHindsight: galvos are cool
[20:34:48] <tjtr33> good stuff from VW https://www.youtube.com/embed/JHixeIr_6BM?rel=0&autoplay=1&iv_load_policy=3
[20:40:55] <ssi> lol
[20:43:59] <XXCoder> tjtr33: wow nice
[20:44:36] <tjtr33> not nice not funny not lol, its an epidemic
[20:44:45] <XXCoder> I know
[20:44:54] <XXCoder> I was talking that it is nice warning video
[20:45:14] <tjtr33> yeh, thx rant over :)
[20:49:30] <CaptHindsight> tjtr33: have a favorite laser distance sensor 10-30mm range <10um accuracy?
[20:52:28] <tjtr33> no, mine were toyo and not that accurate, but may have a few if you want to model up something
[20:53:07] <CaptHindsight> need the accuracy, thanks though :)
[20:53:14] <tjtr33> i used them for tool sensors in a rack tool changer ( someones sleeping in my bed sensors ) to avoid collision
[20:54:42] <ssi> CaptHindsight: trying to build a laser scanner?
[20:54:55] <CaptHindsight> build vs buy
[20:55:14] <CaptHindsight> but panasonic has them fast enough now up to 100KHz
[20:56:51] <CaptHindsight> I think they acquired a new company that made them
[20:57:06] <CaptHindsight> http://pewa.panasonic.com/automation-controls/sensors/measurement-sensors/hl-c2/
[20:57:45] <CaptHindsight> with CMOS sensors in every phone the price and res has dropped like a rock
[20:58:07] <CaptHindsight> well the res has gone up :)
[20:58:54] <tjtr33> i knew sunx but new that panasonic owned them
[21:01:55] <CaptHindsight> that would be handy add-on to a smart phone, laser distance finder
[21:02:22] <CaptHindsight> but I imagine people would just blind each other using them
[21:03:06] <CaptHindsight> tjtr33: did you ever find your linear servo?
[21:06:47] <tjtr33> no, i bought a yaskawa 'positioning' drive, it wasnt what i expected, i wanted stand alone controler.
[21:06:48] <tjtr33> That drive and a KSS 10 pitch lead screw would be as good as a linear for my app ( if it really were standalone)
[21:08:01] <tjtr33> http://www.youtube.com/watch?v=tW5-fI2ElPc
[21:08:29] <tjtr33> near 0:50
[21:10:08] <CaptHindsight> tjtr33: nice, what the price range?
[21:11:07] <tjtr33> uh prototype, so looking for what the range is, guessing motor servo slide screw about 3K
[21:12:00] <tjtr33> the real constraint is precision, its gotta be microns repeatability back to start point, dont care if if\ts off 1/4" on retract distance
[21:12:05] <fenugrec> Hi guys... I'm setting up a lathe that has a retarded encoder on the spindle : two sensors, one of which gives a 1-per-turn index pulse, the other one used to be 100 pulses per turn but the previous monkey cut out about 30% of the circumference so there's 70 holes left, not equally distributed. How should I set things up to be able to do spindle-sync'ed moves ?
[21:13:06] <CaptHindsight> tjtr33: I need similar. Right now I need to hold a 25um gap as accurately as possible
[21:13:46] <tjtr33> i got a voice coil motor here and amp, with reishaw encoder 15mm stroke, > 1G , wanna play with it?
[21:13:55] <tjtr33> 1um rez
[21:14:17] <ssi> fenugrec: make a new disc I imagine :/
[21:14:47] <CaptHindsight> tjtr33: whats the res on the encoder?
[21:14:52] <CaptHindsight> hee
[21:15:47] <CaptHindsight> tjtr33: whats the max force? I have a ~8oz vertical load
[21:16:32] <CaptHindsight> the structure to hold the load is >1/2 the load
[21:16:43] <tjtr33> model SMAC LAR90-15-05-0-M MOD472-2 look up SMAC , i bet 8oz is ok , motor weighs a few kg
[21:17:03] <CaptHindsight> sounds way more than adequate
[21:17:03] <fenugrec> ssi: yes, but it'll be weeks before I can have one done. I'm not sure how to setup the HAL encoder to use only Index (no phase A and B)... haven't figured out how yet
[21:18:54] <ssi> well you can use the index as phase A
[21:18:58] <ssi> that'll give you counts
[21:19:08] <ssi> but it's not going to be a terribly accurate way to do spindle synchronized motion
[21:20:23] <fenugrec> ssi: of course not. But I have a VFD driving the spindle at a reasonably-smooth RPM, so it'll do for a while. So you're saying hook up the index input to phaseA only ? I tried connecting the same to phaseA and index, didn't work
[21:20:31] <tjtr33> CaptHindsight, the R in LAR sez it jumps out, then you can also rotate it :)
[21:20:45] <ssi> yeah try hooking the index sensor up to phase A, and watching the counts on an encoder component
[21:22:09] <CaptHindsight> tjtr33: I don't see that exact part # but if it's similar to the other LAR95's it's big enough
[21:22:37] <CaptHindsight> 304x90x115 ouch maybe too big
[21:23:28] <tjtr33> http://www.youtube.com/watch?v=tbPmrMSrVY4 yeh its here on bench, 12"x4"x2" sounds right
[21:23:54] <CaptHindsight> tjtr33: pm
[21:25:45] <fenugrec> ssi : I have to enable "counter mode" with encoder.<chan>.counter-mode , right ?
[21:25:56] <ssi> I believe so
[21:26:06] <ssi> I'm not really an authority on that; I hack my way through it when I have to :)
[21:26:40] <ssi> right now I'm trying to figure out how to get spinout/spinena signals to show up on my 7i76 :)
[21:27:07] <fenugrec> ssi: I think I'll need to use " encoder.<chan>.position-interpolated (float, Out) ", too
[21:27:28] <ssi> give it a shot!
[21:28:36] <fenugrec> working on it...
[21:35:41] <fenugrec> ssi: just connecting phase A gives bad velocity unless I set counter-mode=1 ; but then the position keeps increasing (it doesn't reset every turn)
[21:36:34] <fenugrec> not sure that's going to work for threading... I assume position needs to loop back every turn (hah, that's what the index pulse is for !!)
[21:41:52] <skunkworks_> is it only a single channel encoder?
[21:42:32] <fenugrec> skunkworks_ : one and a half channel p-) It's meant to be 1/turn + 100/turn pulses but the 100/turn wheel is corrupt (30 holes missing)
[21:43:29] <skunkworks_> I think you hook the index to both Z and A
[21:43:53] <fenugrec> skunkworks_ that's what I have so far but I need a bit of work to make it work with spindle-sync'ed moves
[21:44:12] <skunkworks_> and you will want to use position-interpolated
[21:44:44] <CaptHindsight> http://www.youtube.com/watch?v=5bfoMObhZVY Lower Cost Voice Coil Positioning Stage
[21:44:52] <skunkworks_> sounds like a emco lathe...
[21:45:04] <fenugrec> Denford Easiturn 3
[21:45:41] <CaptHindsight> I like the profile bearing mounted to the coil and carriage/block is stationary
[21:45:56] <CaptHindsight> moving rail
[21:48:12] <fenugrec> skunkworks_ my problem is that spindle-pos doesn't loop from 0 to 1.0; it keeps increasing (encoder needs to be in counter mode for anything to happen)
[21:48:28] <skunkworks_> sounds right.
[21:48:40] <skunkworks_> one turn should be multibles of 1
[21:49:00] <skunkworks_> *each turn should be multiples of 1...
[21:49:17] <fenugrec> and encoder.0.index-enable is hooked up, phase A and Z are connected, I'm not sure what else I'm missing
[21:50:06] <skunkworks_> do you have spindle-pos hooked to anything?
[21:50:20] <skunkworks_> *or spindle-pos-interpolated
[21:50:27] <fenugrec> encoder.0.pos-interpolated => motion.spindle-revs
[21:51:28] <skunkworks_> sounds right.
[21:51:34] <skunkworks_> what is it doing?
[21:52:22] <fenugrec> the pos-interpolated net is always increasing
[21:52:52] <skunkworks_> I think it should
[21:53:05] <skunkworks_> each turn should add 1 to the position..
[21:53:06] <fenugrec> if I manually pulse encoder.0.index-enable, pos-interpolated restarts at 0 (this is ok)
[21:53:40] <skunkworks_> do you have that hooked to motion.spindle-index-enable
[21:53:42] <skunkworks_> ?
[21:53:49] <fenugrec> yes
[21:54:51] <fenugrec> yes, I can see pos-interpolated increase by 1 every turn which would be fine, but I think it needs to reset to 0 every turn for G33 , G76 etc. to work (just tried a G33, it just moved instantly to the destination since pos-interpolated is around 700 at this time
[22:01:00] <skunkworks_> looking at sim - it should reset it only at the start of the threading operation
[22:02:06] <fenugrec> hmm, it doesn't here
[22:02:39] <skunkworks_> can you pastebin your hal file?
[22:02:58] <Jymmm> What are ppl using for "mill cameras" ?
[22:03:14] <fenugrec> skunkworks_ sure, I'll have to manually write the encoder things because I'm tweaking this on the fly with halcmd
[22:10:39] <fenugrec> skunkworks_ the encoder stuff is about in the middle, but commented out. http://pastebin.com/GmzkSifw
[22:11:54] <ssi> CaptHindsight: what are the fittings on the top of that voice coil stage?
[22:12:02] <ssi> ahh air cooling
[22:14:10] <CaptHindsight> yeah even the big linear servos use forced air for cooling in the forcer coils
[22:16:43] <CaptHindsight> https://www.youtube.com/watch?v=WD8txWpcoQM posted earlier, great video of the edge of the tool while cutting
[22:18:32] <skunkworks_> fenugrec: I don't see encoder index enable hooked to motion index enable,,,
[22:20:17] <fenugrec> skunkworks_ I forgot to add it in the pastebin. But it's definitely connected.
[22:20:50] <ssi> CaptHindsight: that's bizarre
[22:20:55] <fenugrec> "show sig spindex-en ::: spindex-en encoder.0.index-enable motion.spindle.index-enable
[22:21:52] <ssi> Schnittgeschwindigkeit
[22:21:54] <ssi> :D
[22:26:43] <fenugrec> skunkworks_: one thing I've noticed is spindle-velocity seems very erratic with halscope. It has large glitches almost every index pulse
[22:27:00] <ssi> I wouldn't expect it to be anything like smooth
[22:27:05] <tjtr33> Stellgeschwindigkeit
[22:27:21] <ssi> every index pulse, it's correcting the difference between the interpolated (guessed) position, and the actual position
[22:28:04] <fenugrec> ssi: ok, I was expecting something super smooth because of the description " encoder uses an algorithm that greatly reduces quantization noise as compared to simply differentiating the position output."
[22:28:19] <ssi> greatly reduces it compared to the step function you'd get without it
[22:28:45] <ssi> I really don't think you're going to be happy trying to thread or tap with a one pulse per rev encoder
[22:30:03] <fenugrec> what about the "70 % duty-cycle 100-pulse" encoder wheel ? any point in trying to use that ?
[22:30:29] <ssi> I would expect that to really screw up linuxcnc
[22:30:37] <fenugrec> haha
[22:30:45] <ssi> the asymmetric nature would be very confusing
[22:30:58] <ssi> but you could try it... plot it in halscope and see how it looks
[22:31:10] <fenugrec> maybe position-interpolated would be usable... I'll try
[22:33:42] <ssi> fenugrec: here's my homebuilt lathe spindle encoder:
[22:33:44] <ssi> fenugrec: https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-xaf1/t1.0-9/p417x417/205204_655375525742_5631970_n.jpg
[22:35:56] <fenugrec> nice
[22:37:48] <fenugrec> ah, phase A and B are "quadratured". I'm thinking I might finish ruining my encoder disk and removing 66 holes, leaving 4 equally-spaced holes if at all possible. It won't give me quadrature, but at least a second channel
[22:38:50] <fenugrec> You need to see my wheel. Hang on I'll dump a pic somewhere
[22:39:15] <ssi> haha yes
[22:39:16] <ssi> ruin it fully
[22:44:45] <ssi> Jymmm: are you around?
[22:44:56] <Jymmm> y
[22:45:05] <ssi> do you run your laser with linuxcnc?
[22:45:12] <Jymmm> Nope
[22:45:15] <ssi> drat
[22:45:26] <ssi> I'm trying to figure out what the cam is gonna be like
[22:45:34] <Jymmm> IT's self-contained.
[22:45:36] <ssi> what g-code is used for power control, fire, etch
[22:45:41] <ssi> yeah... most commercial machines are
[22:45:55] <Jymmm> You can emulate power with spindle
[22:46:13] <ssi> yeah... I have the power input on the psu attached to the spindle speed analog out of the 7i76
[22:46:16] <Jymmm> google laser and linuxcnc, someone did a retro fit
[22:46:21] <anarchos_> anyone have any thoughts on a variable bench dc psu?
[22:46:45] <fenugrec> anarchos_ : voltage range ? output powa ?
[22:47:06] <anarchos_> i'm thinking 50-60 volts, 5A?
[22:47:51] <skunkworks_> remember though that spindle on/off isn't realtime
[22:48:12] <ssi> skunkworks_: probably fine for vector cutting, not so good for engraving
[22:48:15] <ssi> skunkworks_: what would be better?
[22:48:19] <fenugrec> pretty hefty... HP/Agilent makes some nice (albeit expensive) units, E3620 series etc
[22:48:20] <skunkworks_> probably..
[22:48:32] <skunkworks_> motion synced i/o maybe
[22:48:44] <ssi> like a Z axis that controls the output voltage?
[22:48:52] <fenugrec> anarchos_ Lambda too. I have a small (0-40V 1A) lab PSU that I use a lot
[22:49:14] <skunkworks_> http://linuxcnc.org/docs/2.5/html/gcode/m-code.html#sec:M62-M65
[22:49:34] <ssi> ohh right
[22:49:55] <skunkworks_> maybe m67?
[22:50:54] <ssi> yeah that'd probably
[22:50:55] <ssi> work
[22:51:16] <fenugrec> anarchos_ nevermind the E36xx, they're <= 50W I think. I'm not familiar with the larger HP units
[22:51:19] <skunkworks_> fenugrec: this is what came in the emco.. work great http://electronicsam.com/images/emco/oldencoder.JPG
[22:53:11] <fenugrec> skunkworks_ , ssi here's mine with the custom 70% pattern : http://imgbin.org/index.php?page=image&id=18536
[22:54:42] <tjtr33> too nice, make new wheel, add real index (not that shiny tape)
[22:55:26] <fenugrec> hmm that pic turned out pretty well despite the dark. I'm thinking since the disk is a kind of bakelite / fragile plastic, it might have broken at some point. But the cutout looks intentional. I just can't understand why they did this
[22:55:49] <ssi> fenugrec: heh if you can wait til I get my laser running, I'll cut you a new one :P
[22:56:22] <tjtr33> skunkworks_, is that the one made from circular saw blade?
[22:57:35] <fenugrec> ssi: hehe what do you have left to do ?
[22:57:36] <skunkworks_> tjtr33: no - that is right from the emco factory...
[22:57:50] <ssi> fenugrec: I'm working on making the last mirror mount, and starting to do alignment
[22:57:52] <fenugrec> (hang on... you're in EU ?)
[22:57:56] <ssi> I have to figure out a CAM solution
[22:57:58] <ssi> no I'm in the US :)
[23:00:46] <fenugrec> ssi: ok, the Lithuanian server made me think otherwise p-). Can't help with the optics... for CAM I'm cheating and using an old(er) academic license of ProE, it has a huge integrated CAM module. It just needs a postprocessor (that's my next task)
[23:01:15] <skunkworks_> fenugrec: the probably did it so mach would see the index... ;)
[23:01:35] <ssi> I have sheetcam, but I'll probably need to write a postprocessor for it
[23:01:44] <tjtr33> cruel ( funny too )
[23:01:49] <fenugrec> skunkworks_ : what do you mean ? you think the pulse didn't last long enough ?
[23:03:06] <fenugrec> Oh here's an idea. I'll put a thin layer of masking tape and leave only 4 open holes on the outer ring
[23:04:48] <fenugrec> 2000RPM, 100 holes, each hole should be visible ~ 150us
[23:20:34] <fenugrec> What's the difference between a "tool change" and "tool prepare" (HAL component iocontrol)
[23:20:59] <fenugrec> prepare seems to be linked with the Txx words, but what about tool change
[23:28:55] <ssi> prepare is there so that a machine with a big pocketed toolchanger can get the upcoming tool ready in position for the changer to swap it out
[23:29:16] <ssi> ie position the pocket containing the next tool in the changer, then change swaps the current tool with the tool in the changer
[23:29:20] <ssi> and updates pocket info
[23:29:21] <ssi> etc
[23:37:51] <fenugrec> ssi: thanks. I should have my ATC working in no time p-)
[23:39:45] <ssi> heheh
[23:47:50] <ssi> before or after my laser? :D
[23:50:16] <fenugrec> oh so it's a race ?
[23:50:22] <ssi> it can be!
[23:50:31] <fenugrec> I'd say I'll be done in like 5 minutes
[23:50:35] <fenugrec> hehehe
[23:53:33] <fenugrec> and... Done !
[23:53:42] <ssi> cool, you win :)
[23:53:51] <fenugrec> Although to be honest I need to tweak some delays in my PLC, so that's going to happen tomorrow probably
[23:54:01] <ssi> I'm still waiting for a part to print
[23:54:09] <ssi> i guess I can start working on designing the mirror mount mount for this side
[23:54:51] <ssi> actually I think I can use the one I alredy have as is :D
[23:55:02] <fenugrec> It's a funny type of ratcheting turret, it needs to rotate fwd for a certain time to let the pawl engage before reversing and "leaning" on the pawl. I sometimes skip the pawl, giving a failed toolchange
[23:55:07] <ssi> but I have 30m left on the print for this support bracket :/
[23:55:13] <ssi> ahh
[23:55:15] <fenugrec> haha "waiting for a part to print", talk about something nobody ever said 10 years ago
[23:55:18] <ssi> :)
[23:55:37] <ssi> you wanna come help me fix my hnc turret in exchange for a lasercut encoder wheel? :D
[23:56:08] <fenugrec> Sure thing bro. You'll need to come pick me up though
[23:56:23] <ssi> I can probably arrange that :P
[23:56:28] <ssi> as long as you don't mind private air travel
[23:56:44] <fenugrec> meh, if you insist
[23:56:46] <ssi> hahah
[23:57:08] <fenugrec> what are you printing with, ABS ?
[23:57:11] <ssi> yeah
[23:57:23] <fenugrec> how's the inter-layer cohesion ? sucky, or OK ?
[23:57:27] <ssi> it's fine
[23:57:42] <ssi> I try to design so I don't stress the layers in shear or tension
[23:57:48] <fenugrec> of course
[23:57:57] <ssi> it's definitely stronger orthogonal to the layers, but it's adequate
[23:58:04] <ssi> there's only a handful of printed parts on this machine
[23:58:19] <fenugrec> how many kg/hour (or whatever unit) can you deposit ?
[23:58:22] <ssi> the plastic caps on the bottom of the feet, the adjustable tube mounts, and the mirror mount mounts
[23:58:28] <ssi> hell I dunno
[23:58:29] <ssi> heh
[23:58:44] <fenugrec> ok, how heavy is your 30-minute part going to be then p-)
[23:58:58] <ssi> this part says it's 7.9cm^3 of filament
[23:59:06] <ssi> and about an hour
[23:59:13] <fenugrec> I'm just wondering what capabilities those machines have.
[23:59:27] <ssi> they're all over the map
[23:59:32] <fenugrec> ok, so it's not gushing out the plastic at 1000 kg per second
[23:59:34] <ssi> mine could be faster, but I have it pretty conservative
[23:59:35] <ssi> no
[23:59:40] <ssi> mine's also homebuilt
[23:59:43] <ssi> I dunno about the commercial machines
[23:59:47] <fenugrec> the nozzle too ?
[23:59:55] <ssi> not this nozzle, but I've built some