#linuxcnc Logs

Aug 26 2021

#linuxcnc Calendar

01:26 AM Deejay: moin
01:33 AM bjorkintosh: how do you guys run lcnc?
01:40 AM enleth: bjorkintosh: directly, running it in qemu sounds like a terribly bad and pointless idea unless all you want is simulation
01:40 AM enleth: bjorkintosh: CNC machines should be controlled by a dedicated computer anyway
01:44 AM roycroft: yes, they should
01:44 AM roycroft: dedicated computers that are not connected to the internet
01:45 AM roycroft: at the very least, not while linuxcnc is running
01:47 AM enleth: roycroft: eh, if there are no externally listening services on it and it's in a LAN that's under your control, I wouldn't be concerned with that specifically
01:49 AM enleth: what does it even mean, "connected to the internet"? "has listening ports on a public IP"? "has a routing path to public IPs"?
01:59 AM roycroft: can send or receive traffic to the internet
02:00 AM roycroft: my home network is behind a vpn, so it's hard for any incoming to get to the linuxcnc machine, but while my linuxcnc machine is on my local network, it has a bogus gateway that is not the firewall
04:56 AM JT-Cave: morning
04:58 AM XXCoder: yo
06:50 AM JT-Cave: roguish[m], and unt
06:51 AM JT-Cave: roguish[m], and unterhaus I added a master G code tab and the version is bumped
08:23 AM Tom_L: JT-Cave, that installs on buster?
08:24 AM unterhaus: do you have python 3?
08:24 AM Tom_L: that's what i was wondering
08:24 AM Tom_L: what ver it required
08:24 AM unterhaus: yeah, needs 3
08:25 AM unterhaus: ^I think
08:26 AM Tom_L: which one is it? "New Gcode Generator in PyQT5" or Mill Gcode Generator?
08:26 AM Tom_L: https://gnipsel.com/linuxcnc/index.html
08:26 AM JT-Cave: new
08:26 AM JT-Cave: https://gnipsel.com/linuxcnc/gcode/install.html
08:26 AM JT-Cave: python => 3.6
08:27 AM Tom_L: how can i easily tell if i have it?
08:27 AM unterhaus: try to install
08:27 AM unterhaus: or issue which py
08:28 AM Tom_L: i gotta fix hexchat on that pc first
08:29 AM JT-Cave: python3 in a terminal
08:32 AM -!- #linuxcnc mode set to +v by ChanServ
08:38 AM Tom_L: i forgot the deb command to install it...
08:40 AM TurBoss: sudo spkg -i package.deb ?
08:40 AM Tom_L: dpkg
08:40 AM TurBoss: * sudo dpkg -i package.deb ?
08:40 AM Tom_L: yeah
08:40 AM TurBoss: that
08:40 AM Tom_L: been too long :)
08:41 AM Tom_L: i bet i don't have pyqt installed either
08:43 AM Tom_L: mmm says it is
08:44 AM Tom_L: python3.7.3
08:45 AM Tom_L: no module named PyQt5.QtSql
08:45 AM TurBoss: python3-pyqt5
08:45 AM TurBoss: hmmm
08:45 AM TurBoss: there shouldbe python3-pyqt5.somethingqsl
08:46 AM TurBoss: python3-pyqt5.qtsql
08:50 AM Tom_L: there we go
08:52 AM Tom_L: drill charts -> material -> aluminum -> BOOM!
08:52 AM Tom_L: quits
08:53 AM Tom_L: i'm bettin that's not done yet
08:56 AM Tom_L: times's up. bak to wk
09:00 AM JT-Cave: opps forgot to delete that requirement for sql
11:11 AM Tom_L: JT-Cave, 'save settings' crashes it
11:12 AM -!- #linuxcnc mode set to +v by ChanServ
11:12 AM Tom_dev: utilities.py", line 20, in saveSettings
11:12 AM Tom_dev: settings.append(f'NAME_1 = {parent.machine1LE.text()}\n')
11:13 AM Tom_dev: AttributeError: 'main' object has no attribute 'machine1LE'
11:13 AM Roguish: Tom_L, are you speaking about his g-code thing?
11:13 AM Tom_L: uh huh
11:13 AM Roguish: mine seems to save settings, but when I touch 'generate gcode' it crashes....
11:14 AM Tom_L: i've only had a chance to try a couple things and both crash
11:15 AM Tom_dev: File "/usr/lib/python3/dist-packages/libgcode/millchart.py", line 112, in populate
11:15 AM Tom_dev: max_rpm = int(parent.millMachineCB.currentData())
11:15 AM Tom_dev: TypeError: int() argument must be a string, a bytes-like object or a number, not 'NoneType'
11:17 AM Tom_dev: must be missing data files
11:28 AM Tom_L: probably good to test on a 'clean' pc with nothing installed
11:29 AM roycroft: it appears my controller is still in maine - it went from the local post office to the regional sorting center, and now is back at the local post office, so even monday may be an overly optimistic estimate for delivery
11:29 AM roycroft: thanks, louis!
11:34 AM Tom_L: correct me if i'm wrong but that seems like the wrong coast to be on
11:34 AM roycroft: you are correct
11:34 AM Tom_L: gonna be a long walk
11:34 AM roycroft: it could still be "on time"
11:34 AM roycroft: meaning 2 days late
11:35 AM roycroft: if it gets back to the regional sorting center later on today and gets on a plane tomorrow it may arrive by monday
11:36 AM * roycroft decides that going on another usps rant will serve no good, and moves on to other things
11:36 AM Tom_L: i'm kinda hoping i don't piss my carrier off today
11:36 AM roycroft: that often does not take much
11:37 AM Tom_L: i put a toner cartridge in the box for return this AM and put the flag up.
11:37 AM Tom_L: i think i got a new guy and he seems alot better than the last 5
11:37 AM roycroft: as long as you wrapped the cartridge in plastic before putting it in the box that should be fine
11:37 AM Tom_L: no, return box prepaid
11:37 AM roycroft: hopefully it won't get messy en route
11:37 AM Tom_L: in the original wrapper
11:38 AM roycroft: oh, then it should be ok
11:38 AM roycroft: my ups driver seriously dislikes me
11:38 AM roycroft: i've been nothing but friendly with her
11:38 AM Tom_L: i get along good with them
11:38 AM Tom_L: not so much usps
11:38 AM roycroft: but i'm one of those troublesome customers - she has to deliver things to me
11:39 AM roycroft: and she seems not to like delivering things
11:39 AM Tom_L: i usually get 1 of 3 different ones
11:39 AM roycroft: i wonder if she thought when she took the job that all she would have to do is drive the brown truck up and down the streets all day
11:40 AM roycroft: she has a nickname for me - "mr man"
11:40 AM roycroft: when i look at the tracking history i see entries like "left at mr man's porch", "handed to mr man", "left outside mr man's garage"
11:41 AM Tom_L: takes em too long to look at the name and 'man' is probably a default
11:41 AM roycroft: which in this woke age, is completely inappropriate
11:41 AM roycroft: how could she possibly know for sure that i identify as a man?
11:42 AM roycroft: gender recognition is not as easy as it used to be
11:42 AM Tom_L: "left at hippie's porch"
11:42 AM roycroft: even there
11:43 AM roycroft: what if i'm really a hippie who identifies as a jehova's witness?
11:43 AM Tom_L: that goes above and beyond the call of duty
11:43 AM roycroft: "left at porch" is the only safe entry
11:44 AM Tom_L: "tossed on lawn while speeding by"
11:44 AM roycroft: and at some point i'm sure that porches will start identifying as patios or annexes or whatever
11:44 AM Tom_L: that would be more fitting for FedEx
11:48 AM roycroft: i started working on a gazebo on my patio in april - it's one of those metal frame ones with a fabric cover, and the cover was destroyed in a 3 minute hail storm
11:48 AM roycroft: this is the second time this has happened, so this time i decided to use cedar fence boards to cover it
11:48 AM roycroft: they should last longer
11:49 AM roycroft: i got the center section done, but was having difficulty making a cap to go over the top - it took me a while to get the angles right, and then i was not able to get the boards to stick together well
11:49 AM roycroft: i got frustrated and walked away from the job until just now
11:49 AM roycroft: i decided yesterday that it should be pretty easy to 3d print a cap, and that's what i'm doing
11:50 AM roycroft: but it's a 22 hour print job - the longest 3e print job i've done to date
11:50 AM Tom_L: tin cap wouldn't do?
11:50 AM roycroft: once i get that done and the cap installed i can do the lower part, which i'd like to get done before the rainy season
11:50 AM Tom_L: oooo... copper!
11:50 AM roycroft: i could have made a tin cap, but the 3d printed one will work well
11:50 AM roycroft: it's a six sided pyramid
11:51 AM Tom_L: i figured as much
11:51 AM roycroft: so this weekend i can work on the gazebo while waiting for my controller board
11:51 AM roycroft: i actually wanted to get back to the gazebo project months ago, but with the weather being so hot i decided to spend the summer mostly indoors
11:52 AM roycroft: now it's reasonable to work outside again
11:52 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/patio/patio21.jpg
11:52 AM Tom_L: i stuff my kid's cars under it if i know BAD weather is coming
11:52 AM roycroft: nice
11:52 AM Tom_L: they _just_ fit
11:52 AM roycroft: when this gazebo finally dies i'll probably build a permanent structure
11:52 AM Tom_L: mine get the 4 walled covering :)
11:53 AM roycroft: i'm hoping this repair lasts 5 years
11:53 AM Tom_L: that pic was before the center I beam installed
11:53 AM Tom_L: probably didn't need it
11:54 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/patio/patio22.jpg
12:10 PM vodkra_ is now known as vodkra
01:18 PM -!- #linuxcnc mode set to +v by ChanServ
02:57 PM Tom_itx: any recomended BOB to use on the 7I92 DB25 for a "Standard" pinout?
03:00 PM JT-Shop: any parallel port bob should work, just need to flash the correct firmware
03:01 PM Tom_itx: helping a guy figure out a chinaco mill that had m3 on it
03:01 PM JT-Shop: m3?
03:01 PM JT-Shop: oh nevermind
03:01 PM Tom_itx: or a better mesa combination for the Rpi4
03:01 PM Tom_itx: :)
03:01 PM Tom_itx: couldn't just blurt it out!
03:01 PM JT-Shop: LOL
03:02 PM JT-Shop: he has a 7i92 now?
03:02 PM Tom_itx: no
03:02 PM JT-Shop: I'd get a 7i96
03:02 PM Tom_itx: some off the wall crap that doesn't work
03:02 PM JT-Shop: skip the bob crap
03:02 PM Tom_itx: i just wasn't familiar with it
03:02 PM Tom_itx: i did show it to him
03:02 PM JT-Shop: I have a configure program for it
03:03 PM Tom_itx: it's got protection built in right?
03:03 PM JT-Shop: it's the best bang for the buck for steppers
03:03 PM JT-Shop: yup
03:03 PM Tom_itx: ok
03:03 PM Tom_itx: so
03:03 PM Tom_itx: wtf with the gcode thing?
03:03 PM Tom_itx: scroll back...
03:03 PM JT-Shop: https://gnipsel.com/mesa/index.html
03:03 PM JT-Shop: how far back?
03:03 PM Tom_itx: today?
03:04 PM JT-Shop: I see, ok fix that in the am
03:04 PM Tom_itx: np
03:04 PM Tom_itx: just taking a peek at it, didn't have alot of time to play this AM
03:05 PM JT-Shop: brand new so bound to break, if you can run from terminal and get the error that would help, I'm fabbing some parts
03:05 PM Tom_itx: i posted a couple errors
03:06 PM JT-Shop: ok
03:06 PM Tom_itx: utilities.py", line 20, in saveSettings
03:06 PM Tom_itx: <Tom_dev> settings.append(f'NAME_1 = {parent.machine1LE.text()}\n')
03:06 PM Tom_itx: <Tom_dev> AttributeError: 'main' object has no attribute 'machine1LE'
03:06 PM Tom_itx: one of em
03:06 PM JT-Shop: ah been doing some renaming lol
03:06 PM Tom_itx: ~11 AM
03:07 PM JT-Shop: I think one is due to not having the config file to start, I'll fix that
03:07 PM JT-Shop: thanks for testing
03:08 PM Tom_itx: np, glad to break shit !
03:08 PM Tom_itx is now known as Tom_L
03:16 PM Tom_L: no good at fixin though
03:26 PM JT-Shop: hmm I forgot to account for someone not specifying a machine...
03:31 PM Tom_L: i tried to
03:31 PM Tom_L: but it wouldn't save it
03:31 PM Tom_L: it crashed instead
03:32 PM JT-Shop: I need to weld some parts but they need blasting first but I can't get near the blast cabinet until I burn boxes and trash but the trash barrel needs to be emptied first ...
03:32 PM JT-Shop: I'll fix it in the morning
03:32 PM Tom_L: np
03:49 PM Loetmichel_: grrr second time in a few weeks that i forgot to take my glasses when driving to the fuel station late at night getting cigarettes... and noticing it halfway there. I REALLY should not do that. (its only -1.5, so its not like i drive someone over, but still.)
03:52 PM Tom_L: just try your best to keep it between the lines
03:52 PM JT-Shop: or walk to the store and buy some pine nuts instead
03:54 PM Tom_L: yeah, its only -1.5
03:55 PM Tom_L: err maybe that's the vision
03:55 PM Loetmichel_: -1,5 dioters
03:55 PM Loetmichel_: -1,5 diopters
03:55 PM Loetmichel_: not really "Bottle bottoms"
03:56 PM Tom_L: so it's still safe to look at the sun
03:56 PM Tom_L: without frying anything
03:56 PM Loetmichel_: its only slightly blurry, i just cant read any street names anymore unless i stop and climb up the sign posts :)
03:56 PM Loetmichel_: other direction
03:57 PM Loetmichel_: i am short sighted
03:57 PM Loetmichel_: far sighted are the ones that are the magnifier lenses
04:15 PM rene-dev7 is now known as rene-dev
04:35 PM JT-Shop: https://gnipsel.com/images/wood-working/saw-stop/saw-cabinet-29.jpg
04:35 PM JT-Shop: https://gnipsel.com/images/wood-working/saw-stop/saw-cabinet-30.jpg
04:36 PM Tom_L: that turned out nice
04:37 PM JT-Shop: thanks
04:37 PM Tom_L: don't scratch it !
04:38 PM JT-Shop: a learning experience for sure
04:38 PM JT-Shop: lol, it's all made from leftover crap and less that perfect red oak
04:39 PM roycroft: no, actually, scratch it right now
04:39 PM JT-Shop: you would not see a scratch in the finish as it's in the wood
04:39 PM roycroft: then you won't have to worry about scratching it
04:39 PM JT-Shop: I'm not worried about using it
04:39 PM roycroft: actually that burn mark on the bottom drawer already makes it imperfect
04:39 PM roycroft: so you won't have to worry about it
04:40 PM JT-Shop: my neighbor had a buddy show up with a state of the art brand new canoe and he promptly threw it in the chat
04:40 PM JT-Shop: it's a stain
04:40 PM roycroft: oh
04:40 PM roycroft: still, it's a built-in flaw that means you don't have to be careful with it
04:41 PM roycroft: good for shop fixtures
04:41 PM JT-Shop: dunno where from but I could have put it inside but decided it had character
04:41 PM roycroft: yes, it's perfectly fine where it is
04:41 PM JT-Shop: there are small worm holes and other imperfections
04:44 PM JT-Shop: when I used to fly RC planes most were stand way off scale lol
04:45 PM roycroft: those imperfections make it "artisan"
04:45 PM JT-Shop: :)
04:45 PM roycroft: which is way better than "factory made"
04:48 PM JT-Shop: I should go and TIG those parts together before quitting time
04:55 PM roycroft: my print is finally have done, in terms of layer count
04:55 PM roycroft: which is about 85% done in terms of time
04:59 PM Roguish: roycroft, Ok, little bit of politics today. did you see Kabal? the mess got a lot uglier
05:02 PM Roguish: dang. up to 88 now, and particle count up to about 130
05:30 PM Tom_L: 99F here
05:30 PM XXCoder: 65f here
05:41 PM unterhaus: 89f here now but it's supposed to be cooler tomorrow
05:41 PM unterhaus: I guess it's going to rain tonight
05:42 PM XXCoder: it rained here, will probably rain again later
05:43 PM unterhaus: little dog isn't going to be happy, high probability for t-storms over the next 6 days
05:44 PM unterhaus: I don't know how she survived in south carolina for 7 years
05:46 PM Tom_L: doesn't like noise?
05:52 PM JT-Cave: Tom_L, ready for you to break it again :)
05:52 PM Tom_L: that was quick
05:52 PM Tom_L: what's the best way to update it?
05:53 PM JT-Cave: use GDebi
05:53 PM Tom_L: will it overwrite the old deb?
05:53 PM JT-Cave: GDebi will
05:53 PM Tom_L: same name?
05:54 PM JT-Cave: yea
05:54 PM Tom_L: luckily that page is still open
05:56 PM Tom_L: any switches with gdebi?
05:56 PM JT-Cave: I thought I had all the wiring done on the copy lathe this morning but writing the ladder I realized I forgot one
05:56 PM JT-Cave: I just right click and open with gdebi
05:56 PM Tom_L: too late
05:56 PM Tom_L: it's installed
05:57 PM Tom_L: that looks better
05:57 PM Tom_L: mill chart crashes
05:57 PM JT-Cave: ok
05:58 PM JT-Cave: ah same error as drill was
05:58 PM Tom_L: not able to select machine there either
05:59 PM JT-Cave: I don't think I finished that
06:01 PM Tom_L: what's the difference between cut depth and step depth?
06:01 PM Tom_L: pocket...
06:01 PM JT-Cave: hmm I guess cut should be full
06:03 PM Tom_L: spindle probably doesn't need a decimal
06:03 PM Tom_L: not a big deal
06:04 PM JT-Cave: which one?
06:05 PM Tom_L: you don't support G73
06:05 PM Tom_L: oh, that was under pocket
06:05 PM JT-Cave: mill chart page fixed
06:05 PM Tom_L: basically the same as G83
06:05 PM JT-Cave: in canned cycles?
06:05 PM Tom_L: yeah
06:06 PM Tom_L: iirc i switched to G83 anyway
06:06 PM JT-Cave: it's not a canned cycle
06:06 PM Tom_L: oh 73 isn't..
06:06 PM JT-Cave: nope, I wish it was
06:06 PM Tom_L: yeah, that's a bit misleading..
06:06 PM Tom_L: not on your part
06:08 PM JT-Cave: hmm maybe it is...
06:08 PM JT-Cave: looks like G73 and G74 are both canned cycles
06:08 PM JT-Cave: I was thinking of G33.1
06:09 PM JT-Cave: G74 Left-hand Tapping Cycle, Dwell I won't bother with that one
06:10 PM Tom_L: that's lathe anyway i think
06:11 PM JT-Cave: what is?
06:11 PM Tom_L: 74
06:11 PM Tom_L: isn't it?
06:11 PM JT-Cave: G76 is lathe
06:11 PM Tom_L: oh
06:11 PM Tom_L: 74 is for a tapping head i think
06:12 PM JT-Cave: both 74 and 84 are for floating heads
06:15 PM Tom_L: canned cycles left out F word on g81
06:16 PM Tom_L: no, it's at the top
06:16 PM Tom_L: i'm not used to putting it there
06:17 PM Tom_L: i wonder if that really should be after the toolchange
06:17 PM Tom_L: the S and F words
06:17 PM JT-Cave: they can be anywhere before M3 or a feed move
06:17 PM Tom_L: k
06:18 PM JT-Cave: g73 added and new deb pushed... chow time here
06:18 PM Tom_L: thanks
06:24 PM JT-Cave: on the canned cycles it does check to see if you have all the required entries but does not check to see if they make sense
06:24 PM Tom_L: yeah that would take alot of code
06:24 PM Tom_L: mill charts must not be done
06:24 PM Tom_L: it crashes
06:25 PM Tom_L: also you have thread mill 2x, maybe intentionally
06:25 PM Tom_L: under holes and on the main tab set
06:26 PM Tom_L: same with tap
06:27 PM Tom_L: lookin good so far
06:29 PM -!- #linuxcnc mode set to +v by ChanServ
06:29 PM Tom_dev: gdebi error, file not found: gcode_0.0.4_amd64.deb
06:31 PM Tom_L: nevermind
06:31 PM Tom_L: my bad
06:37 PM Tom_L: some facing comments are carried to the pocket routine
06:38 PM Tom_L: ;Steps 4
06:38 PM Tom_L: ;Top 0.0
06:38 PM roycroft: so i think i've figured out how those adjustable mount 3 jaw chucks can be useful
06:39 PM roycroft: they never made sense to me before, because indicating parts on one would be more work than just using a 4 jaw
06:39 PM roycroft: but if you're going to be using the same diameter material for a number of operations, and indicate the chuck to that diameter, it's probably pretty repeatable
06:40 PM roycroft: but that's a better job for a collet chuck, no?
06:40 PM Tom_L: if you have a collet big enough
06:40 PM roycroft: yes, for large parts i suppose that's a problem
06:43 PM unterhaus: what's adjustable about the mount?
06:43 PM unterhaus: google totally fails when you ask it for adjustable mount 3 jaw chucks
06:44 PM unterhaus: eagerly notes that all 3 jaw chucks are adjustable, like a dog bringing you a dead rabbit
06:44 PM roycroft: there are four grub screws in the back of the chuck that you can use to adjust it laterally on the face plate
06:44 PM unterhaus: that's not just centering?
06:44 PM roycroft: yes, that's centering it
06:45 PM unterhaus: mine has centering screws, which I usually ignore
06:45 PM roycroft: but chuck scrolls are quite variable
06:45 PM unterhaus: especially if they are as worn as mine
06:45 PM roycroft: if you indicate a 1" diameter part on a 3 jaw using the centering screws and then mount a 1/2" piece of stock it won't indicate accurately
06:45 PM roycroft: you'll have to center it again
06:45 PM unterhaus: if I really cared, I would center it on every part
06:46 PM roycroft: in which case you'd just use a 4 jaw
06:46 PM roycroft: which would be faster
06:46 PM unterhaus: the 6 jaw is better on round
06:46 PM roycroft: that's my whole point
06:46 PM roycroft: but if you're going to make 100 parts out of the same 1" stock, it may be worth the time to center the 3 jaw
06:46 PM roycroft: it should be repeatable enough that you don't have to check every part
06:46 PM unterhaus: the centering on the 6 jaw is orders of magnitude finer
06:47 PM unterhaus: it used to be a sign of a better quality chuck
06:47 PM unterhaus: for the hackery I engage in on my lathe, it's not fully necessary
06:48 PM Tom_L: so a 6 jaw with dials on the adjustment screws
06:48 PM unterhaus: when I was doing precision machining, I probably would have adjusted it
06:48 PM Tom_L: when did you stop doing precision machining?
06:49 PM unterhaus: research money dried up
06:49 PM Tom_L: you make it sound like you graduated to hackery :)
06:49 PM unterhaus: I am capable of hackery on demand
06:49 PM Tom_L: we probably all are
06:49 PM roycroft: someone just called about the lathe i have for sale
06:49 PM unterhaus: I'm not going to dial something in to less than a micron unless someone is paying
06:49 PM roycroft: i was getting ready to donate it to st. vinnie's
06:50 PM roycroft: i think i'll donate it to a man who hands me cash instead
06:50 PM Tom_L: haha
06:50 PM roycroft: that was one machine i thought i would probably not be able to sell quickly
06:50 PM unterhaus: I wish I thought I could get money for my lathe
06:51 PM roycroft: when i reposted it i lowered the price from $100 to $99
06:51 PM unterhaus: wood lathe
06:51 PM roycroft: i guess the psychological barrier is real
06:51 PM unterhaus: it works, even on those of us that know what you're up to
06:51 PM roycroft: someone else wanted to check it out but never showed up
06:51 PM unterhaus: I think there is some familiarity too, $100 looks so stark
06:52 PM roycroft: i was just getting ready to put it back indoors
06:52 PM roycroft: but this guy said he really wants it and would come right over
06:52 PM roycroft: which means i don't have to haggle :)
06:52 PM Tom_L: by george you better clear a path to him...
06:55 PM unterhaus: fb translate is usually pretty good, but they translated "where he is licensed" to "where he is laid off"
06:56 PM unterhaus: french and english words for licensed are even cognates
07:00 PM unterhaus: somebody posted a gearbox to the mailing list. It's a cross between a harmonic drive and a vane pump
07:01 PM unterhaus: their marketing pitch conveniently fails to mention the existence of harmonic drives
07:01 PM Tom_L: sounds a bit odd
07:01 PM unterhaus: https://www.wittenstein-us.com/zero-backlash-galaxie-gearbox/
07:02 PM unterhaus: I feel confident someone has previously made such a design
07:06 PM unterhaus: the advantage of a harmonic drive over this is 3 parts vs. several hunred
07:06 PM roycroft: hah
07:06 PM roycroft: it's gone
07:06 PM roycroft: and he told me to keep the dollar
07:06 PM roycroft: so i got my original asking price
07:07 PM roycroft: and i don't have to put it away, which is the more important thing
07:09 PM unterhaus: that's a real bonus
07:09 PM roycroft: yes, that's the best part
07:09 PM unterhaus: I don't have 240v in my garage, so demonstrating my lathe would be an issue
07:09 PM roycroft: when one is short on shop real estate, not having to store things is good
07:10 PM roycroft: this lathe is a 1/2hp 120v machine
07:10 PM roycroft: a harbor freight class lathe
07:10 PM roycroft: hence the low price
07:10 PM unterhaus: the guy who sold me my lathe bought a new motor and converted it from 3 phase, so I'm not sure why he didn't go 120v
07:10 PM roycroft: the guy just picked up a set of turning tools at a thrift store for a song, and decided he needed a lathe to play with
07:10 PM unterhaus: it just isn't that big of a motor
07:11 PM roycroft: this should be perfect for him to get started on
07:11 PM unterhaus: that sounds like me, I bought 3 sets of turning tools years before i got the lathe
07:11 PM Tom_L: unterhaus, did you see skunkworks' plastic harmonic drive?
07:11 PM unterhaus: then I got another set with the lathe
07:11 PM unterhaus: Tom_L yes that works a lot better than I thought
07:12 PM roycroft: i told him if he decides to get a chuck to get a good one, and get one that takes inserts to adapt to the spindle
07:12 PM roycroft: because the lathe he got has a non-standard spindle thread
07:12 PM unterhaus: I bought a robot that used harmonic drives, which I scrapped. But I have 10 harmonic drives in the storage room downstairs
07:12 PM roycroft: if he gets a good chuck he can upgrade the lathe later and just get a new insert for the chuck
07:12 PM unterhaus: so I don't think I'll be printing any
07:13 PM roycroft: anway, i have a meeting in a few, so i should get going
07:13 PM roycroft: and i think my part will be finished printing by the time i get home
08:24 PM unterhaus: JT-Shop, spam on the forum
09:06 PM Centurion_Dan1 is now known as Centurion_Dan
10:55 PM snakedGT is now known as snaked