Back
[00:26:13] <rue_house> justanotheruser, an old photocopier motor
[00:26:42] <rue_house> gearmotors, big, mean
[00:45:16] <justanotheruser> I want something small too
[00:48:25] <SpeedEvil> what are you trying to do?
[00:49:23] <justanotheruser> roboarm
[00:50:16] <SpeedEvil> broken hoverboard motors with 10:1 gear
[00:59:39] <rue_house> what span of arm?
[01:00:37] <rue_house> http://ruemohr.org/~ircjunk/robots/arm5/p1030873.jpg
[01:00:43] <rue_house> about that big?
[01:01:26] <rue_house> http://ruemohr.org/~ircjunk/robots/arm5/p1030872.jpg
[02:09:19] <mrdata> my lord
[02:09:29] <mrdata> that robot can manipulate itself
[02:16:05] <vicarion> can it pleasure itself?
[02:26:07] <mrdata> stephanie! MOAR input
[08:42:09] <JT-Shop> rue_house: I use Gtk with Python
[09:21:04] <rue_house> to gtk on python is a bit more abstracted than just tk on python?
[19:35:24] <rue_house> armyofevilrobots, what numbers do you use on plexiglass?
[19:35:30] <rue_house> mm/s rpm?
[19:35:52] <rue_house> I did a keychin thing and it came out horrid
[19:38:44] <Tom_L> rue_house, too slow
[19:38:49] <Tom_L> you probably burned the plexi
[19:39:09] <Tom_L> you could also try a water mist
[19:40:47] <rue_house> I can jack up the feed rate
[19:41:02] <rue_house> it was only 50mm/sec, I can go to about 200
[19:41:58] <rue_house> gnight back soon I hope
[19:42:52] <Tom_L> rue_house clear a spot for me in case the country goes to shit
[20:33:02] <Snert> nah. It'll be fine. We can always peach him if he's not a good prez.
[20:38:44] <Tom_L> takes too long
[21:26:02] <rue_bed> yea, like the states ever thought a prez was bad while he was in power
[21:26:29] <rue_bed> not even hitler got impeeched
[21:28:05] <rue_bed> do you think I can write a c wrapper for a c++lib?
[21:36:17] <Tom_L> why would you?
[21:36:39] <rue_bed> to avoid a rewrite
[21:46:28] <rue_house> ok
[21:46:39] <rue_house> wow, I couldn't avoid crashinng today
[21:46:52] <rue_house> I'm awake, only lost 2.5 hours
[21:47:03] <orlock> lucky
[21:47:07] <orlock> i did that a few nights ago
[21:47:09] <rue_house> that gives me another 2 hours to save the world
[21:47:11] <orlock> lost the whole night
[21:47:18] <orlock> :-(
[21:47:32] <orlock> at least now all my CAD is done,
[21:47:40] <rue_house> for?
[21:47:40] <orlock> just need to do a small amount of soldering
[21:47:44] <orlock> and the rest is software
[21:47:55] <orlock> making a remote control device
[21:47:59] <orlock> as in, the handset
[21:48:06] <orlock> potentiometer for throttle
[21:48:16] <orlock> and a quadrature encoder for steering
[21:48:28] <orlock> i've built it in the trigger + wheel style, like RC car handsets
[21:48:46] <orlock> used a pair of unused optical endstops as quadrature encoder sensors
[21:48:47] <rue_house> hmnmm
[21:48:55] <rue_house> like to see that one!
[21:49:25] <orlock> i'll hook those and the pot up to an esp8266 - which is like, 6 wires and 2 resistors
[21:49:38] <rue_house> do you think I can make dovetail sliders with a bit thats just 14 degrees?
[21:50:02] <orlock> 3 wires each for the optical sensors, and a pair of resistors to bring 3.3v down to 1v
[21:50:16] <orlock> the esp8266's analog in only tolerates up to 1v apparently, but its a 3.3v device
[21:50:35] <orlock> so i've got a 100k and 220k resistor to bring it down
[21:50:51] <rue_house> yup
[21:50:51] <orlock> another esp8266 on the robot
[21:50:56] <orlock> and i've got a CYBORG!
[21:51:05] <orlock> with MY BRAIN AS THE CONTROLLER!
[21:51:19] <rue_house> 1.1V I bet, I'd use a pot for fine tuning the divider
[21:52:03] <orlock> I wont have access to the full range of motion of the pot anyway
[21:53:21] <orlock> and i'll use polymorth plastic for the "grip" bit
[21:53:30] <orlock> because it's all nasty sharp right angles
[21:54:26] <rue_house> did the maniac win the election?
[21:54:41] <orlock> Still counting i think
[21:54:57] <rue_house> can I get work as a bricklayer down at the mexican border?
[21:55:19] <rue_house> oh wait,he said they have to build it
[21:59:22] <Tom_L> rue_house, get a regular dovetail cutter
[22:00:05] <Tom_L> 14 deg isn't very much
[22:00:13] <rue_house> yea, 14 is a regular
[22:00:27] <Tom_L> iirc i have a 60 deg cutter
[22:00:59] <rue_house> Ijust found a 60 I cant tell is its carbide
[22:01:15] <Tom_L> sure you can
[22:01:19] <Tom_L> how heavy is it?
[22:02:00] <Tom_L> http://www.travers.com/indexable-60176dovetail-mill/p/24-286-065/?gclid=CO_AntnemtACFQimaQodw8cHsg
[22:02:07] <Tom_L> get one like that and you can change inserts
[22:02:15] <rue_house> well, judging BY THE IMAGE ONLINE... about .4kg
[22:02:25] <Tom_L> http://www.harveytool.com/cat/Dovetail-Cutters/Specialty-Profiles/Browse-Our-Products_202.aspx?gclid=CIuwn9PemtACFQYGaQodhNcPRg
[22:02:30] <Tom_L> those are carbide
[22:02:44] <rue_house> cant buy it from the states tom, shipping would be more than the bit
[22:03:00] <rue_house> 169 is WAY over budget
[22:03:41] <rue_house> said, I was thinking of making my own that uses lathe inserts
[22:03:58] <Tom_L> you could
[22:04:09] <rue_house> https://www.aliexpress.com/item/Woodworking-Tool-Chamfer-Bit-60-Degrees-Router-Bit-1-2-7-8-Shank-Arden-A0312158/32695482905.html
[22:04:31] <Tom_L> no
[22:04:36] <Tom_L> those are for wood
[22:04:42] <Tom_L> different rake angles etc
[22:04:45] <rue_house> that could be a carbide edge
[22:04:48] <Tom_L> bad idea
[22:04:53] <rue_house> aluminum
[22:05:16] <Tom_L> different rake angles etc
[22:05:18] <Tom_L> bad idea
[22:05:30] <rue_house> carbide wood bits work fine on aluminum
[22:05:37] <Tom_L> it is but the geometry is wrong
[22:05:47] <Tom_L> suit yourself
[22:06:14] <Tom_L> it'll hammer it harder than cut
[22:06:41] <rue_house> I really do need to go use my milling machine
[22:07:42] <Tom_L> http://www.ebay.ca/itm/High-Speed-Steel-Dovetail-Slot-Cutter-30-mm-x-60-Degree-Milling-Tool-12-Flutes-/151985371549?hash=item236308b99d:g:mrgAAOSwbsBXk1cW
[22:08:28] <Tom_L> maybe mine is 45 deg
[22:08:48] <armyofevilrobots> @rue_shop3 sorry for lag. Plexiglass fast passes and lower RPM than you would expect. It melts really easily and all of a sudden it’ll ball up and start making a ton of heat. Once that happens you’re screwed.
[22:09:03] <armyofevilrobots> And for sure a spray bottle with water.
[22:09:23] <rue_house> it messed up my little project good
[22:09:32] <rue_house> oo I can still try gain
[22:09:34] <Tom_L> i suggested the water mist
[22:09:42] <Tom_L> agressive cuts
[22:10:31] <rue_house> I CAN get that up to 400/500 mm/min
[22:10:38] <rue_house> I wonder if its got enough torque
[22:10:42] <Tom_L> http://www.shopbot.ca/dovetail-cutter/price/canada/54843
[22:10:46] <Tom_L> wtf is shopbot?
[22:10:52] <Tom_L> is that a canuck thing?
[22:10:54] <rue_house> dunno
[22:10:55] <armyofevilrobots> @rue_house run light passes but a lot of them.
[22:11:03] <rue_house> armyofevilrobots, so far I only owe you one 1mm bit :/
[22:11:06] <armyofevilrobots> shopbot is a commercial CNC from California. Pretty nice actually.
[22:11:11] <rue_house> light 0.2mm?
[22:11:15] <armyofevilrobots> @rue_house Hahaha.
[22:11:41] <armyofevilrobots> In plexi… do you _need_ 1mm bit? There should be some 1/8” bits in there, single flute straight.
[22:11:50] <rue_house> did some 5/8" alum cutouts tho!
[22:12:03] <rue_house> na I'm uisng a 1/8" carbide I have
[22:12:09] <armyofevilrobots> If you’re cutting plexi with a 1mm, probably .5mm cut depth at most.
[22:12:20] <armyofevilrobots> That bit explodes easy, and it’s really meant for the router (30krpm).
[22:12:35] <rue_house> k, so the 1/8" can take 0.5mm at mayb 200mm/min?
[22:13:51] <Tom_L> what's that in ipm?
[22:14:19] <rue_shop3> armyofevilrobots, I mounted an air nozzel to it, but it'll need a redo
[22:14:23] <armyofevilrobots> 1/8 can do 1/16 passes in plexi at … Crap. that’s really slow surface speed.
[22:14:38] <Tom_L> http://www.ebay.ca/sch/i.html?_nkw=dovetail+cutter+45&_sacat=0&clk_rvr_id=1121232523196&gclid=CILu6cLhmtACFYQxaQodTlYFLg&geo_id=34636&MT_ID=16&crlp=154720575500_207&rlsatarget=kwd-27260546434&keyword=dovetail+cutter+45&treatment_id=7&poi=2124&adpos=1o3&device=c&crdt=0&ul_noapp=true
[22:14:39] <armyofevilrobots> I would do 20ipm minimum
[22:15:00] <armyofevilrobots> but it depends on your RPM. Maybe at 5400 that will be OK.
[22:15:10] <rue_shop3> that tops out at 3900
[22:15:12] <armyofevilrobots> Just watch real close for rubbing and white haze around the cut.
[22:15:49] <rue_shop3> white haze is the beginning of the end?
[22:15:54] <Tom_L> yes
[22:15:58] <Tom_L> end
[22:16:06] <Tom_L> by then it's almost too late
[22:16:19] <rue_shop3> 20ipm = 508 mm/min
[22:16:23] <rue_shop3> so, top speed there
[22:16:37] <Tom_L> try around 6-8
[22:16:59] <rue_shop3> 1/16" = 1.6mm pass
[22:17:20] <rue_shop3> 203
[22:17:26] <rue_shop3> 203 is quite achivable
[22:17:35] <Tom_L> i was cutting those blue boxes at ~6.7
[22:17:47] <Tom_L> .0312 cutter
[22:18:07] <rue_shop3> i got kinda excited when I realized I could jig up my old cnc and its a 4 axis
[22:18:40] <rue_shop3> I might still write a NC uploader
[22:18:50] <rue_shop3> I'd like someting I can modify the feedrate on the fly with
[22:18:56] <Tom_L> i didn't try to push it more than that because i was getting a decent cut at that rate
[22:18:59] <rue_shop3> or pause, move around, and resume
[22:19:06] <Tom_L> lcnc will
[22:19:15] <Tom_L> feed override
[22:19:22] <Tom_L> right on the front screen
[22:19:34] <Tom_L> preset the % in the ini file
[22:19:57] <Tom_L> they have pause resume now too but i haven't tried it
[22:20:07] <Tom_L> it's a thing you load in i think
[22:21:06] <rue_shop3> dont ahve that set up and not sure about the parallel port step rates
[22:21:28] <Tom_L> mmm i have a spare set of cards...
[22:22:26] <rue_shop3> hahahah when you try to spin the vise, and both hands crack, but the vise dosn't move
[22:22:26] <Tom_L> http://linuxcnc.org/docs/2.7/html/man/man1/moveoff_gui.1.html
[22:22:31] <Tom_L> i'm not sure if that's it
[22:22:37] <Tom_L> it might be
[22:23:20] <Tom_L> it was something new they were working on i was pushing for
[22:26:12] <rue_shop3> whent eh plastic was balling up on it yesterday I wanted to interrupt toe job, free the bit, and resume
[22:26:29] <rue_shop3> bCNC would let me pause, but not mess with it while paused
[22:26:32] <Tom_L> pretty hard to do once it's that hot
[22:27:57] <Tom_L> black is horrible to cut
[22:28:17] <Tom_L> clear isn't so bad
[22:32:22] <rue_shop3> if clear isn't bad, I'm doomed :)
[22:32:51] <Tom_L> you should make an air mister to mist water etc on it
[22:33:02] <Tom_L> i used a squirt bottle
[22:33:51] <Tom_L> for sure don't let the chips build up around the cutter
[22:33:56] <rue_shop3> armyofevilrobots, I masked my error by turning the bit into a tight V cutter
[22:37:25] <rue_shop3> which I now expect to break off in some plexi during an overzelous engraving excersize...
[22:41:20] <armyofevilrobots> heh.
[22:41:25] <armyofevilrobots> Plexi is actually a PITA to cut.
[22:41:39] <armyofevilrobots> It’s hard to balance between burning/melting and cutting to fast and just shearing the bit.
[22:42:07] <armyofevilrobots> acrylic and UHMW too.
[22:42:36] <armyofevilrobots> Wood is easy in comparison. Just ram the bit through at way more speed than you think it would survive.
[22:42:45] <armyofevilrobots> 100ipm at 20krpm, all day.
[22:43:35] <rue_shop3> :)
[22:44:20] <rue_shop3> I was doing research as I'd like to get another mill made before you need this one back, surprised to find they use ball bearings on the sherlines spindle
[22:45:01] <rue_shop3> which reminds, me, what DO i have for tapered roller bearings
[22:46:29] <Tom_L> probably deep groove
[22:56:39] <rue_shop3> hmm 32tpi or 1mm
[22:57:10] <rue_shop3> 32tpi in finer
[22:57:23] <rue_shop3> speed was always a problem on my old mill tho
[22:59:47] <rue_shop3> if (rate_chocolate_bars_per_min > 5) supper();
[23:00:56] <rue_shop3> armyofevilrobots, why isn't the spindle light on?
[23:01:06] <rue_shop3> problem or just didn't stick?
[23:27:55] <armyofevilrobots> I didn’t even know that was a lithgt.
[23:28:02] <armyofevilrobots> It’s not unusual.
[23:34:13] <rue_shop3> the 3d printed circle
[23:34:15] <rue_shop3> with leds
[23:34:55] <rue_shop3> well this plexiglass keything came out great, less the scratch I put in it getting it off the bed
