#linuxcnc | Logs for 2016-08-18

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[02:18:07] <archivist> that shopbottools crap is sold at the "what the market will bear" price, gouging the customers pockets
[02:28:07] <archivist> but for customer gouging this has a higher price http://www.ebay.co.uk/itm/Ballscrew-CNC-Machine-MDL-A4-BSX-Mach3-ATC-Tool-Changer-4th-Axis-3D-Scanner-/310562732677
[02:47:51] <Deejay> moin
[04:20:47] <CaptHindsight> I will be happy to make you a better Shopbot type router for ~$10K
[04:21:56] <CaptHindsight> SuperShopBot, MegaShopBot, UltaShopBot or similar :)
[04:22:24] <archivist> fsckedbot
[04:22:29] <CaptHindsight> will color match to your favorite as well
[04:22:53] <CaptHindsight> even woodgrain
[04:23:45] <CaptHindsight> the stepper motor that tilts the Nobel1.0 vat lost it's mojo
[04:23:53] <archivist> I was wood turning this week, making a new handle for a clock winding key
[04:24:02] <CaptHindsight> got to hot and the mojo seeped out
[04:34:46] <CaptHindsight> http://i.ebayimg.com/images/g/jOgAAOSwQPlV~8ND/s-l500.jpg a bit larger than this
[04:38:28] <archivist> tiny things only have flea power anyway
[04:39:25] <CaptHindsight> it has a worm gear
[04:39:48] <CaptHindsight> the ratio was like 50:1
[06:12:18] <jthornton> morning
[06:32:32] <witnit> yasnak: old acme-gridley, davenport, index 60, MUCH older and far different types of screw machine :)
[06:32:35] <gregcnc> 1$ lathe? https://chicago.craigslist.org/nwc/tls/5737589868.html
[06:33:17] <witnit> go get it now, the top comes off the base and if you gut everything you ALMOST load it with two guys
[06:33:52] <witnit> 5c drawtube and some tool posts would be nice
[06:35:14] <archivist> if that base is as heavy as a machine here.....
[06:35:24] <witnit> it probably is
[06:35:45] <archivist> sure looks like a shaublin copy
[06:35:48] <witnit> they are not light, even after you take the tabletop, bed, head and control panel
[06:36:02] <witnit> off^
[06:36:16] <XXCoder> its worth more than in scrap I guess
[06:36:35] <witnit> but they are really nice and hold rather tight
[06:36:52] <archivist> if the maker is related to the watch makers get it!
[06:37:07] <witnit> you can get pneumatic collet closer and barloader for it!
[06:37:08] <witnit> =D
[06:37:20] <witnit> I made a pneumatic barfeed for mine
[06:38:01] <gregcnc> supposedly Hardinge took over Elgin during the depression
[06:41:06] <archivist> the way the cross slide bolts on is very clock/watchmakers lathe
[06:41:16] <archivist> http://www.lathes.co.uk/elgin/
[06:41:34] <witnit> they are usually set up as production lathes
[06:42:28] <archivist> taking the crossslide off and changing to rest etc is fast
[06:42:29] <witnit> like, setting deadstops for crosslides and a turret on the back for things like spot, drill, tap, debur, back to the spot again with a quick lever.
[06:43:34] <gregcnc> If Hardinge parts fit you could put some life back into it
[06:56:01] <gregcnc> this one probably isn't a dollar https://chicago.craigslist.org/sox/hvo/5737162848.html
[06:59:32] <gregcnc> ebay china bearings https://youtu.be/AvF5ETQfm8o
[07:48:43] <Contract_Pilot> Sup
[07:52:27] * Contract_Pilot having a beer
[07:52:50] * Contract_Pilot say it's 5am
[07:56:38] <TurBoss> Hi
[07:57:19] <_methods> not yet
[08:11:30] <JT-Shop> lol
[08:13:15] <_methods> hehe
[08:15:37] * JT-Shop needs to stay away from the tator chip machine at the customers place today lol
[08:27:05] <_methods> yeah those things are good for losing weight
[08:44:22] <miss0r> burittos ?
[08:47:10] <_methods> oops not good for losing weight
[08:47:19] <_methods> potato chips
[08:53:09] <Contract_Pilot> thats not good either
[09:32:40] <pcw_home> I looked a a big bag of potato chips at the market yesterday: 3520 calories
[09:33:54] <_methods> that bag of chips may not weigh much, but you will after eating them lol
[09:51:32] <gregcnc> newest 3D printer tech https://player.vimeo.com/video/98488940
[10:17:55] <CaptHindsight> better than new 3D printer tech ^^
[10:19:26] <gregcnc> i suppose it's a printing lathe?
[10:23:29] <Denkishi> Quick question, feed & speed recommendation for pocketing out a hole that was already lasered out of hot rolled pickeled/oiled steel?
[10:26:10] <Denkishi> The lasered hole is 1.5" and I need to take it to 1.625" though there is about .0825 that is hardened from the laser.
[10:29:13] <gregcnc> best to check the tool supplier recommendations
[10:29:27] <cradek> yikes, I'm only guessing, but I'd try to cut it in one pass to get under the hardened part, maybe 100 sfm, use as big a tool as possible, 3/4" at 500 rpm maybe
[10:29:49] <cradek> you'll need flood coolant
[10:30:44] <_methods> carbide end mill?
[10:31:17] <_methods> usually the haz from laser isn't too bad it shouldn't really have a huge impact on tool life
[10:31:31] <_methods> plasma and flame on the other hand...........
[10:31:42] <Denkishi> cradek, Heh, was trying just that. Though I was cutting conventional .. should try climb?
[10:31:49] <Denkishi> _methods HSS :/
[10:32:20] <cradek> if your machine is tight, climb might be better
[10:32:21] <Denkishi> cradek, Also using a 1"
[10:32:24] <_methods> then 100sfm should be good
[10:33:11] <_methods> archivist: you don't happen to have a manual for a heidenrich & harbech vdf v630 do you?
[10:33:20] <_methods> i found a german manual at least for it
[10:37:21] <Denkishi> Heh, using a Trak DPM with an A.G.E. 3 ... dirty ass old machine :/
[10:37:27] <Denkishi> Still works though I guess lol
[10:38:28] <Denkishi> Though I would seriously love to "upgrade" it in some way so that I'm not only limited to 2.5D milling :/
[10:41:33] <archivist> _methods, dont think so, not a name I know
[10:41:45] <_methods> ok figured i'd ask
[10:41:59] <_methods> we got the german manual so that's good enough for what we needed it for
[10:42:15] <_methods> i'll have to get around to translating the maintenance section
[10:45:14] <gregcnc> schmieren and such, that's a hefty lathe
[10:46:27] <CaptHindsight> Das machine control is nicht fur gerfinger-poken und mittengrabben. Oderwise is easy schnappen der springenwerk, blowen fuse, und poppencorken mit spitzensparken.
[10:48:14] <MacGalempsy> morning :)
[10:59:21] <_methods> hehe
[10:59:39] <_methods> it's a nice lathe
[11:00:34] <_methods> they just needed to put some more ass into the kreuzschalthebel fur vorschubbewegung un vorschubrichtung
[11:01:02] <_methods> mittelstellung handbetrie
[11:01:15] <_methods> b
[11:01:38] <CaptHindsight> better get out the metric tools
[11:04:20] <archivist> my swiss made lathe is an inch model :)
[11:09:05] <CaptHindsight> http://www.epoch-electronics.com.tw/e-stepping_T35%20Series.htm kaput stepper motor
[11:11:18] <skunkworks> oooh - 2nd or 3rd person that had successful threading. ;)
[11:11:19] <skunkworks> https://www.youtube.com/watch?v=O_5iwP_H1XU
[11:13:56] <CaptHindsight> gregcnc: motor died before I swapped drivers, was at ~105 C for an hour
[11:14:24] <CaptHindsight> internal temp was higher
[11:15:24] <CaptHindsight> for a few $ more they could have used at least a Nema17
[11:15:25] <gregcnc> was current adjustment not working or set wrong?
[11:17:16] <CaptHindsight> TB6600 they don't drop to a lower current mode after idling for any period of time
[11:18:11] <gregcnc> shouldn't the stepper survive rated current indefinitely? i don't know much about steppers
[11:18:36] <CaptHindsight> you'd have to disable the drive if parked for more than a minute to get any life out of the motor
[11:18:57] <CaptHindsight> http://www.epoch-electronics.com.tw/e-stepping_T35_Car.htm not these
[11:19:23] <CaptHindsight> toy motor
[11:19:43] <Sync> _methods: if it is not clapped out it is pretty seksi
[11:19:58] <_methods> it's in good shape
[11:20:47] <gregcnc> eh it's time for more coffee and getting something done
[11:21:47] <_methods> https://www.dropbox.com/s/f599se9hse8epwk/2016-08-18%2010.49.18.jpg?dl=0
[11:22:23] <_methods> the ways are basically new
[11:23:19] <_methods> anyways it's lunch time
[11:42:35] <FloppyDisk525> Was looking for a 1/2" impact wrench to use at home (light use). Stumbled across this grizzly:
[11:42:36] <FloppyDisk525> http://www.grizzly.com/products/1-2-Impact-Wrench-Twin-Hammer/H6140?utm_campaign=zPage
[11:42:55] <FloppyDisk525> I was looking at the HF: http://www.harborfreight.com/12-in-professional-air-impact-wrench-68424.html
[11:43:08] <FloppyDisk525> Wonder if anyone has used the grizzly, it's about 1/2 the price.
[11:45:56] <gregcnc> earthquake sounds more impressive
[11:46:16] <CaptHindsight> FloppyDisk525: I have had little success with HF pneumatic tools
[11:46:43] <CaptHindsight> oil before each use, don't drop them, performs best when left in drawer
[11:47:05] <FloppyDisk525> I'm good at drawer performances:-)
[11:47:49] <Sync> I have a hazet, its pretty nice
[11:48:02] <CaptHindsight> get the extended warranty and plan on returning them often
[11:48:55] <FloppyDisk525> My problem is that it won't get much use. It'd be nice if I thought that and then it 'did' get a lot of use...
[11:57:35] <gregcnc> witnit https://chicago.craigslist.org/nwc/for/5738614753.html
[11:59:06] <archivist> gregcnc, later version of what I have
[11:59:33] <gregcnc> yeah i thought you had a bechler
[11:59:36] <CaptHindsight> thats surprising and nearby
[12:03:23] <CaptHindsight> gregcnc: https://chicago.craigslist.org/nwc/tls/5737776073.html $550
[12:04:40] <gregcnc> priced to move
[12:04:54] <CaptHindsight> worth it in parts alone
[12:07:09] * jymmm tries to exchange CaptHindsight for parts, but always rejected
[12:08:13] <CaptHindsight> jymmm: may parts are worn and broken
[12:08:18] <CaptHindsight> may/my
[12:08:36] <CaptHindsight> including area of brain that controls typing
[12:08:52] <CaptHindsight> gregcnc: are you getting the lathe?
[12:08:55] <jymmm> CaptHindsight: Well, they never said that, just kinda gave me a "you wanted to do WUT?! With THAT?!" kinda look
[12:09:13] <gregcnc> no i'm actually trying to get a lathe running now
[12:09:55] <jymmm> CaptHindsight: Thats okey though, we'll just toss your brain in a jar once the parts become obsolete.
[12:10:15] <jymmm> CaptHindsight: keep brain alive in a jar that is
[12:10:57] <jymmm> is $27+tax fair price for 80 CF nitrogen exchange?
[12:22:53] <eeriegeek> Anybody know a practical upper limit for the chopping frequency of a L297/L298 driver? 20kHz is the highest I've seen referred to.
[12:25:07] <SpeedEvil> Start out with the ton/toff times.
[12:25:18] <SpeedEvil> http://scholar.harvard.edu/files/davidkeith/files/97.stolaroff.aircapturecontactor.e.pdf
[12:25:23] <SpeedEvil> err
[12:25:24] <SpeedEvil> not that
[12:25:43] <SpeedEvil> https://www.sparkfun.com/datasheets/Robotics/L298_H_Bridge.pdf
[12:27:17] <SpeedEvil> mentions 'commutation frequency 40khz max
[12:28:17] <eeriegeek> Ahh, good point, I was focused on the L297, but the L298 is probably the limiting factor
[12:30:15] <SpeedEvil> In some case, you might be able to go a bit higher, but not a huge amount
[12:58:22] <ctjctj> How do I tell axis which coordinate system to display? Sometimes it shows G53, other times it shows G54
[13:05:28] <_methods> doesn't it display the currently commanded coordinate system?
[13:10:32] <cradek> yes it shows the current one
[13:13:46] * ctjctj nods "Ok, how do I change it? I assume there is a magic gcode?
[13:14:10] <cradek> in mdi if you just program g54, g55, etc it'll change
[13:14:18] <cradek> that changes the active system
[13:14:52] <ctjctj> Ok. but if I do g53 g[01] x#y# that is a temporary change of coordinate system...
[13:14:55] <cradek> also note it never shows G53, which is not a coordinate system you can make active
[13:15:04] <cradek> yes that's right
[13:15:29] <ctjctj> I've sometimes seen it display g53. Which I think is machine coordinate system?
[13:15:54] <cradek> I don't think it ever shows G53
[13:16:03] <cradek> wait, which "it" do you mean?
[13:16:14] <ctjctj> it == axis.
[13:16:23] <cradek> which thing on which tab?
[13:17:56] <ctjctj> cradek, In axis the DRO display shows x,y,z G5# x,y,z,r and TLO X,y,z In the next column it is DTG x,y,z and G92 x,y,z.
[13:18:12] <cradek> ok, the stuff on the dro tab
[13:18:13] <ctjctj> Sometimes when I start axis it shows g53. Other times it shows g54.
[13:18:24] <ctjctj> The DRO also displays over the preview.
[13:18:56] <ctjctj> It seems that when "g54" is executed it switchs to the g54 display. But I sometimes want machine coordenates.
[13:19:07] <skunkworks> it does display machine coordinates if you have it clicked in 'view'
[13:19:21] <cradek> the primary XYZ display does
[13:19:31] <cradek> but I'm pretty sure the G5x readout never says G53
[13:20:12] <ctjctj> Ok. I am observing a bug.
[13:21:03] <skunkworks> heh - cradek I just brought up linuxcnc and it is displaying G53
[13:21:15] <cradek> whoah
[13:21:23] <ctjctj> 1) On start it does sometimes display g53 and then the x,y,z are in machine coordinates. 2) On the PREVIEW page switching from machine to relative stays in relative. change to DRO tab and the view DOES change. Go back to preview and view DOES change.
[13:21:25] <cradek> what version? I just looked at the source and convinced myself it doesn't
[13:21:25] <_methods> yeah i think when you initially power up you're techically in g53
[13:21:34] <_methods> until you command a g54
[13:21:35] <cradek> _methods: no
[13:21:40] <ctjctj> 2.7.5
[13:22:05] <ctjctj> _methods, could that be pre homing?
[13:22:06] <_methods> until you home it out
[13:22:12] <skunkworks> but active gcodes display 54
[13:22:15] <_methods> but i have no idea
[13:22:22] <cradek> please don't guess
[13:24:04] <ctjctj> cradek, ok. More information. First start of the day after "source scripts/rip*" gives a g53 display in preview tab.
[13:24:20] <ctjctj> I've now done four restarts and it comes up in g54 after those restarts.
[13:24:33] <ctjctj> Even with the the system "unhomed"
[13:24:36] <cradek> I thought we were talking about the DRO tab where it explicitly says G5x
[13:25:08] <cradek> I forgot the preview tab also optionally shows those
[13:25:27] <cradek> I wonder are they different?
[13:25:31] <cradek> I'm building 2.7 now
[13:25:33] <ctjctj> cradek, confusion reigns. The default for axis is to display the DRO over the top of the preview.
[13:25:37] <skunkworks> cradek, http://imgur.com/a/eoqiE
[13:25:54] <cradek> skunkworks: is the dro tab the same?
[13:26:00] <skunkworks> yes
[13:26:09] <cradek> ctjctj: yeah! we'll straighten it out :-)
[13:26:15] <ctjctj> (It was months after I started playing with Axis before I actually noticed the DRO. And now I'm "Does it have a bolt hold option? Does it have a "half option"?
[13:26:33] <gregcnc> "#" switches between machine and working coordinates
[13:26:59] <cradek> does that affect it?
[13:27:09] <skunkworks> I don't use the coordinates in the preview/dro. never noticed it
[13:27:30] <skunkworks> If I mdi a G54 - it doesn't change.
[13:27:31] <ctjctj> So one of the things that was happening is that I reported that it did not seem to be holding on to touch off values. This was a bad report. What WAS happenign is that sometimes it would show g53 with zero values for offset which I read as "no touch off values". But when g54 is shown, yes it is there.
[13:27:38] <skunkworks> if I mdi a g55 it does.
[13:27:58] <skunkworks> So it thinks it is in G54 but displays G53 it seems
[13:28:02] <ctjctj> g54,g55,g5# do seem to work.
[13:28:09] <cradek> by golly in 2.7.6 mine says g53 too
[13:28:30] * ctjctj smiles "It did that in 2.5 IIRC"
[13:29:10] <skunkworks> heh
[13:30:11] <skunkworks> while in there - someone should fix the preview so when the coordinate systems are turned on - it still displays velocity... :)
[13:30:14] <cradek> yeah in status, it shows g5x_index=0
[13:31:20] <ctjctj> !pastebinit
[13:31:38] <cradek> wtf, it's totally wrong
[13:32:01] <cradek> I did g10l2p1y1 and restarted, then g0y0 and the dro says Y: 1; G53 Y: 0
[13:32:50] <cradek> it should say Y: 0; G54: Y: 1
[13:33:15] <ctjctj> cradek, one of those amazing things that a noob notices and the expert's eye just glosses over.
[13:33:42] <cradek> oh hey do you see an expert around here somewhere?
[13:34:02] <cradek> now I'm building 2.6...
[13:34:16] <ctjctj> When I was at University as a teaching assistant we use to joke "An expert is the guy 2 pages ahead of you in the textbook"
[13:34:23] <cradek> with much shame, I admit my machines are all still running 2.6
[13:34:31] <cradek> ha
[13:35:15] <ctjctj> cradek, My machine was running 2.5 until earlier this month. And it only upgraded because I finally got wired either net out there. Ubuntu 10.10lts didn't have wireless drivers I could get installed for my usb frob.
[13:36:45] <cradek> 2.6 is also wrong
[13:37:29] <cradek> this is baffling
[13:37:39] <cradek> are we all testing RIP?
[13:38:17] <ctjctj> http://pastebin.com/9HGXWF4M I get this when attempting to home Y axis in RIP. Cradek, I am testing in RIP but it was/is happening in installed debian wheezy from linuxcnc.org
[13:38:52] <skunkworks> mine is installed
[13:40:24] <ctjctj> I am currently learning Inventor 2017 HSM which runs on a virtual box inside. I test the output in camotics and then in a RIP linuxcnc. Then I take it out to the shop and run an aircut and then finally actually make chips.
[13:43:45] <cradek> ctjctj: that's a bug related to tcl version, but I'm having trouble finding information about it other than in my fuzzy memory
[13:44:07] <cradek> (the backtrace about Y axis)
[13:44:22] <ctjctj> cradek, thank you.
[13:46:11] <cradek> it looks the same as https://github.com/LinuxCNC/linuxcnc/issues/23 , which is thought to be fixed
[13:46:37] <cradek> what OS is yours with the homing problem?
[13:46:52] <ctjctj> Ubuntu 16.04.1
[13:47:29] <ctjctj> The interesting thing is that it *was* working at 13:31 eastern
[13:47:48] <cradek> uhh
[13:50:47] <cradek> maybe you should reopen #23 with the new information. I don't see a fix in 2.7.6 so I bet this is still broken in 2.7.
[13:52:00] <cradek> now I'm pretty sure I did not see the weirdly-wrong-g53-showing bug in master
[13:52:13] <cradek> that would be a nice data point
[13:53:14] <pcw_home> ubuntu 16.04 definitely will have the tcl y axis bug
[13:53:28] <ctjctj> pcw_home, why?
[13:53:40] <cradek> the tcl version is too new, with a new bug in it
[13:53:52] <ctjctj> tcl is broken again? Wonderful.
[13:54:06] <pcw_home> y is a letter and a boolean afaicr
[13:54:12] <cradek> it's amazing to me that they're still "improving" it
[13:54:41] <ctjctj> TCL/TK is the ONLY language I "speak" where I need the syntax manual open the entire time.
[13:55:48] <cradek> master does not have the weird-g53 bug. it works how I expect.
[13:55:56] <cradek> so that's even weirder
[13:56:21] <ctjctj> cradek, Ok, data for #23 which isn't quite the same I think. When I loaded a file and then tried home y it worked.
[13:57:01] <cradek> what on earth
[13:57:33] * ctjctj cradek I'm pretty good at figuring out what I did to break things. And trying to get repeatability.
[13:59:06] <cradek> mk's b188548d says "on amd64", not about tcl version
[13:59:19] <cradek> is your ubuntu16 amd64 or i386?
[13:59:37] <cradek> that would be a wonky tk bug if it's particular to amd64
[14:02:45] <ctjctj> amd64
[14:03:04] * cradek squints
[14:04:31] <ctjctj> Is Axis still the preferred GUI?
[14:04:44] <cradek> you mean an hour ago?
[14:05:01] <cradek> yes it was/is (to me)
[14:05:25] <cradek> it's the most stable (ahem)
[14:07:41] <ctjctj> I'm dreading getting my mesa card. It will take care of jitter issues I'm told. It will interface to the g540 I'm told. But the pncwizard scares me.
[14:09:12] <cradek> you could configure it manually, starting with a hm2-stepper sample config
[14:09:47] <cradek> ctjctj: is it repeatable that opening a gcode file fixes homing of Y?
[14:09:54] <cradek> I'm working on reopening bug 23
[14:13:10] <ctjctj> cradek, I can not check right this moment but it matches what I was seeing. My normal test procedure is: linuxcnc linuxcnc/config/jgro2/jgro2.ini. click estop, click power, click folder, load ngc file. click home axis, click Y, click home axis, click Z, click home axis. do stuff. For the G53/G54 display stuff I did: linuxcnc ...; estop;power; home sequence. Y fails. Restart, four failures in a row. Go to load file and it
[14:13:10] <ctjctj> worked again.
[14:13:30] <cradek> ok thanks
[14:17:11] <ctjctj> I'm in the middle of a test run of a cut. As soon as it completes I will retest for us.
[14:22:02] <cradek> I reopened 23, but in retrospect I'm not your bug is the same as 23 was
[14:22:10] <cradek> either way, it's recorded
[14:38:58] <ctjctj> thank you. I'm almost done with this test cut. I'll do my home check in just a momemnt.
[14:47:59] <ctjctj> So my code is g17 (select plane) M5 (stop spindle) g53 g0 z0. (move to machine coordinates Z0.); Why does axis/linuxcnc pause at that point?
[14:48:42] <cradek> pause before doing what?
[14:48:56] <ctjctj> NM. Axis was reproing the g53 g0 z0. line but I see an M9 followed by M1 and a tool change.
[14:52:44] <mutilator> anyone in here use aspire? i'm trying to take a top vcarve and invert it to engraver on the bottom side of the acrylic
[14:53:01] <mutilator> not having much luck making it work like i want
[14:53:13] <mutilator> wondered if anyone knew how you might do something like that
[14:54:57] <cpresser> mutilator: what exactly isnt working?
[14:59:49] <ctjctj> cradek, confirmed: linuxcnc linuxcnc/configs/jgro2/jgro2.ini; it brings up axis. click: estop, power, home axis, y, home axis (fails), z, home axis, open icon, double click on symbolic link; double click on different ngc file than last time, click: y, click home axis (success)
[14:59:59] <mutilator> i'm not sure how to do it because what's done on the top is different than what happens when doing it on bottom
[15:00:52] <cradek> ctjctj: thanks, I put that in the report
[15:01:33] <ctjctj> Default NGC was loaded of the LinuxCNC logo.
[15:02:22] <ctjctj> I think I will make a 3.5in diameter plug to hold a pen for drawing with the CNC. Interesting solution now that it is "easy" to mount and unmount the router.
[16:04:01] <renesis> ctjctj: thats how they did in CNC school
[16:04:43] <renesis> you had to be able to draw shit without exploding a felt tip pen in a bridgeport before they would let you use actual tools in the haas
[16:09:14] <ctjctj> renesis, Oh, that's sort of cool.
[16:13:44] <XXCoder> heh used perment pen to draw on slab to see if layout was right once
[16:29:38] <Deejay> gn8
[16:30:30] <mutilator> i just need to make a bob ross cnc painter
[16:30:41] <mutilator> gcode one of this PBS lessons
[16:30:43] <mutilator> sell for billions
[16:30:53] <XXCoder> lol
[17:00:31] <renesis> ctjctj: it was spring loaded, so honestly not that difficult
[17:01:15] <renesis> so to not get past that lesson, you had to totally not get it. your Z zero could be an inch off and maybe it still works
[17:08:23] <MacGalempsy> afternoon everyone
[17:09:19] <BeachBumPete> afternoon mac
[17:09:45] <Tom_itx> mutilator, does it have a 'mirror' function?
[17:09:51] <Tom_itx> most cad packages do
[17:11:05] <MacGalempsy> so I got s part designed and all the way through Fusion360 with post processing for linuxcnc
[17:11:21] <MacGalempsy> unfortunately, the part was misconceptualized, so im not going to cut it
[17:11:29] <BeachBumPete> lol
[17:11:30] <Tom_itx> hah
[17:11:45] <Tom_itx> good learning though
[17:11:45] <MacGalempsy> lol.
[17:11:57] <MacGalempsy> it beats the hell out of wasting the material
[17:12:07] <MacGalempsy> but I kinda wanted to just do it
[17:12:45] <BeachBumPete> Dooo Ittttt
[17:13:45] <MacGalempsy> after I found that out yesterday, I decided to replace the flexconduit on the 4th axis
[17:14:20] <MacGalempsy> going to put it in today and see if i can get it spinning
[17:43:56] <Tom_itx> BeachBumPete did you get your wiring pannel figured out?
[17:50:30] <BeachBumPete> no not yet
[17:56:09] <pink_vampire> hi
[18:05:32] <FloppyDisk525> Loading on your trucks (plural) is included in the price: http://www.ebay.com/itm/AEROSPACE-240-x-120-x-24-BK-BOURN-KOCH-3SPINDLE-CNC-PROFILER-BRIDGE-MILL-/262571278766
[18:07:08] <mutilator> Tom_itx: not that i know of..
[18:25:43] <ctjctj> renesis, and here I was upset that I was missing by 5 tenths
[18:29:25] <ctjctj> And the very very not fun of having the CNC lose its X position at the 80% mark in the cut....
[18:30:13] <Duc_main> crap I wish mine repeated to 5 tenths lol
[18:31:11] <ctjctj> Duc_main, *laughs* I was joshing. Being off by an 1.0000 is just as likely as being able to hold to 0.0005
[18:31:28] <Duc_main> must have missed that part
[18:31:43] <ctjctj> When I'm holding to 5 tenths or less it is because of lots and lots and lots of care on the Bridgeport and Southbend by hand.
[18:32:07] <Duc_main> tonight I need to rip into my top end on mine to see what the noise is
[18:32:28] <ctjctj> Duc_main, renesis noted that in his CNC class one of the lessons was to draw with a pen without it exploding. And then followed up with "It was spring loaded so you could be off by an inch and still pass"
[18:32:30] <Duc_main> new bearings and vfd drive.
[18:32:41] <Duc_main> ah
[18:33:17] <ctjctj> I'm waiting for full paycheck to show up so I can replace these PoS "high quality stainless steel" 1/4" 20 all thread with some good 1/2 acme 2 start 10tpi
[18:34:23] <Duc_main> what type of machine is it
[18:36:12] <ctjctj> Home built JGRO. Up sized to hold a P-C 3.5in router. Then I just got done machining a 4x5x2 billet of Aluminum into a router mount. I'd say that took care of about 75% of the wiggle in the business end. Also finding the linear bearing adjuster that was "disconnected" helped clean it up.
[18:37:14] <Duc_main> that had to be slow machining
[18:38:09] <ctjctj> Duc_main, 8 and then 10 minutes per pass. 0.050 per pass (0.025 DoC). Started with a 0.750 hole.
[18:39:28] <Duc_main> at least its done
[18:40:13] <ctjctj> I figure I have about 10 - 12 hours of machine time into the router mount. And of course having done it to save myself $75 I spent $50 for a long reach 0.125 end mill, which just happens to be solid carbide. And it turns out that all my 1/2 boring bars are right hand so that was fine for the first 2.5 in of boring, so I ended up with a solid carbide 1/2 by 2.5in left hand boring bar.
[18:40:25] <ctjctj> So when everything was done I saved about $10
[18:41:53] <Duc_main> but learned alot
[18:41:55] <ctjctj> It is done now and I *learned* things. First time I've done that class of boring. First time I did successful deep milling with a 1/8in end mill. First time I successfully got all my corners rounded correctly. And I cut "feet" on both sides and put radius on all parts.
[18:43:13] <ctjctj> I made one *real* mistake. I didn't draw everything out first and write down my numbers. This lead to one hole being drilled 0.050 off where it was suppose to be which meant that the counter bore had to be redone 0.050 over. Ugly egg shape that nobody but me will ever notice.
[18:43:49] <ctjctj> And two of the mounting holes were off by 0.050 which I see and it screams at me but those are completely hidden and only you and I know how badly I messed those up.
[18:45:49] <Duc_main> now that is the key and it will bug you forever
[18:47:32] <ctjctj> Nope. I'm just hoping I don't forget when I build out the upgrade. With my luck I'll forget that I have to offset those two holes in the Z-axis mounting plate and will have to redo the mounting plate.
[18:47:59] <ctjctj> Well, time to go back to the shop and try this cut again.
[18:50:06] <renesis> ctjctj: i've considered jacking a sharpie into an ER16 collet for old times sake
[18:50:21] <renesis> im advanced cnc student now, don't need no springs
[18:50:40] <renesis> also i just sold my spring loaded engraving tool, heh
[20:07:56] <ctjctj> renesis, I'm pretty sure there won't be any springs in my "plug" for the router mount. If I'm very lucky it will just fit a sharpy. I'll put an o-ring on both sides to keep it in place up and down.
[20:11:06] <ctjctj> Ok. Z has lost itself twice now. X once. I've slowed the velocity down. I might have to slow it down again. It bothers me when it losses its location when it isn't under load.
[20:19:13] <Duc_main> where besides H&W is a good place to buy bridgeport parts
[20:22:56] <ctjctj> Duc_main, make them?
[20:23:54] <ctjctj> Duc_main, there are a couple of places that sell bridgeport parts. What part do you need for yours?
[20:24:32] <Duc_mobile> past my skills and time. Need to replace the spindle pulley hub and the mating part
[20:24:34] <Duc_mobile> http://www.ebay.com/itm/NEW-SPLINE-GEAR-SPINDLE-PULLEY-HUB-2-HP-VARI-SPEED-BRIDGEPORT-MILL-PN-1537-/371250280286?hash=item56703db75e:g:WwwAAOSwNSxU0Pn5
[20:24:53] <Duc_mobile> I have a good step in mine which I think is causing the bag of rock sound
[20:26:43] <ctjctj> Duc_mobile, that needs a dividing head. Looks like it is made in three parts. Mr. Pete has video on how to make that end piece.
[20:35:07] <Duc_mobile> ctjctj: tools I have but time I dont
[20:35:32] <Duc_mobile> I think the springs might be weak that push the two parts together also
[20:38:05] <ctjctj> That is an easy and lower cost thing to try.
[20:42:11] <Duc_mobile> I would say mine looks this bad http://www.ebay.com/itm/Splined-Gear-Hub-for-Bridgeport-Variable-Speed-1-5-to-2-0-HP-Milling-Machine-OEM-/182245702034?hash=item2a6eb0b992:g:dq4AAOSwrklU47hn
[20:43:42] <ctjctj> That actually looks nice. What do you mean "this bad?"
[20:44:25] <Duc_mobile> you see the indents in the teeth
[20:44:52] <MacGalempsy> question, if a PSU operates at ~8.7a and I run it to 220v, then should each conductor get a 5A fuse?
[20:45:38] <Duc_mobile> unless thats how they should look
[20:45:52] <SpeedEvil> MacGalempsy: no
[20:46:06] <SpeedEvil> MacGalempsy: current in a series circuit is identical through all the wires
[20:46:10] <SpeedEvil> so 10A
[20:46:25] <ctjctj> Duc_mobile, I don't see "indents in the teeth", I see multiple starts. Are you sure that ebay listing is what you meant to show me?
[20:46:26] <SpeedEvil> (if it's a 220V/0V
[20:46:57] <MacGalempsy> ok thanks
[20:47:31] <MacGalempsy> I was hoping to be able to use this 18g cable, but that will be too light for 10A
[20:48:31] <Kevin`> MacGalempsy: what relevance does the 220v have? do you mean it uses 8.7a at 110v? or 8.7a output?
[20:49:05] <Duc_mobile> ctjctj: highlighting the spots now
[20:49:50] <MacGalempsy> Kevin`:variable input 110-240v, ~8.7A input > 24V 27A output
[20:50:28] <MacGalempsy> its a PSU for this machine I am putting together
[20:50:55] <MacGalempsy> the heated bed is 24V 350W, should be fun!
[20:51:02] <Kevin`> I would give it a 10a fuse, although it will likely use <5a at 220v
[20:51:21] <Kevin`> use a 220v bed, simpler :)
[20:51:57] <Duc_mobile> ctjctj: http://i1221.photobucket.com/albums/dd465/shefron/Machinery/Boss5%20servo/s-l1600_zpsykr7xvmv.jpg
[20:52:04] <Duc_mobile> mine are a little worse
[20:52:32] <MacGalempsy> not after already having this bed heater :) is 13"x17"
[20:53:59] <Kevin`> i'm working on adding a print head to my cnc router, the heaters will probably be interesting since it only has 40vdc and 110vac internally unless I add stuff
[20:54:25] <ctjctj> Duc_mobile, I'm going to go look at my BridgePort. Mine is much older than yours and I'm just looking at the Z feed. Be back in a moment.
[20:54:56] <Kevin`> 40v is a bit marginal for the usual reprap extruder driver and hotend, usually they run on 12/24
[20:55:36] <Duc_mobile> ctjctj: The splines inside the part may also be lose fit to the spindle. I can rotate the spindle back and forth while holding the top pulley. Makes a nice clucking sound
[21:00:24] <ctjctj> Duc_mobile, ok. They used those splines in a couple of different places. From what I am seeing either those are wear marks but they appear even on both sides which implies they run that in back gear as much if not more than forward.
[21:00:57] <ctjctj> Normally you'd see wear on only one side if it was a wear pattern. I'm not exactly sure where that part is located and if it ever runs in reverse.
[21:01:39] <Duc_mobile> The part is located up in the top of the head. One shaft has a pulley attached to the top
[21:01:45] <ctjctj> If you watch how mr pete did his he had to do a dividing head, and then milled at an offset. What I'm seeing looks almost like the end mill was not touching the bottom but was up what, 10thou?
[21:02:07] <ctjctj> Ok, then the wear should be asymmetrical on your part. Is it?
[21:03:01] <Duc_mobile> the part has a 7 degree angle on the teeth so it fits closer together has it wears but I wonder if my springs are weak for pushing the two together
[21:03:53] <ctjctj> I'd test the springs first. They do go and they are lower cost to replace.
[21:04:45] <ctjctj> Duc_mobile, and with that does of wisdom (remember the advise you get is worth exactly what you paid for it. Your millage may vary. I am not a doctor though I play with one.)
[21:05:24] <MacGalempsy> what is it like to get linuxcnc to give a filament feedrate?
[21:05:58] <ctjctj> Duc_mobile, I saw no such wear pattern or machining marks on the Z feed of my Bridgeport. I also noticed in the Ebay listing that the quality of the interior boring looks pretty poor.
[21:06:50] <Duc_mobile> I will just be buying new pieces
[21:07:42] <Duc_mobile> the hammering back and forth may cause the marks but tomorrow I will call H&W about the parts
[21:07:48] <Kevin`> MacGalempsy: my reading suggests simply creating an additional linear axis will allow coordinated motion for an extruder. with a weird letter, but the slicer post-process should be written with that in mind
[21:08:29] <Kevin`> MacGalempsy: filament feed isn't specified as a rate in g-code, it's specified as a distance offset from the start of the print
[21:16:54] <MacGalempsy> I am just going to use RaMPS because it is what is simplest. just change up the firmware a little and its ready to go
[21:17:41] <MacGalempsy> I would like to try a FASTBOT board, but not sure how stable the firmware is.
[21:17:59] <MacGalempsy> with a name like Unicorn, it is scarey