#linuxcnc Logs

Apr 11 2021

01:48 PM -!- #linuxcnc mode set to +v by ChanServ
01:55 PM perry_j1987: hows it going everyone
02:50 PM _unreal_: perry_j1987, doing....
02:50 PM _unreal_: I'm about to take my daughter to the beach for a good walk
02:50 PM perry_j1987: sounds like fun
02:51 PM perry_j1987: i've been telling myself im going out to the shop all day so far heh
02:51 PM _unreal_: http://www.bocasurfcam.com/
02:51 PM perry_j1987: havnt made it out of this chair yet
02:52 PM _unreal_: on second thought maybe not
02:52 PM _unreal_: looks like we are about to get WILD rain
03:09 PM -!- #linuxcnc mode set to +v by ChanServ
03:10 PM andypugh: I just won a pick-and-place machine in eBay.
03:11 PM andypugh: This one.
03:11 PM andypugh: https://youtu.be/B1XsdCAZl2Q
03:12 PM andypugh: I think it went for less than it should. What would you guess it was worth in parts alone?
03:31 PM XXCoder: nice!
03:31 PM XXCoder: whats you planning to do with it
03:34 PM andypugh: Assemble PCBs, I supppose. :-)
03:35 PM andypugh: It just looked like fun. And I only paid £122
03:36 PM XXCoder: geez
03:36 PM XXCoder: compressor looks like $50 by itself
03:37 PM perry_j1987: wow smokin deal
03:38 PM perry_j1987: time to fire up kicad and get some projects ready to put through it
03:43 PM _unreal_: you say you won it but I bet it still cost ya a pretty penny
03:44 PM drdoc: mornin
03:45 PM drdoc: _unreal_: bless you & those kids
03:45 PM _unreal_: ?
03:46 PM drdoc: the ex biz
03:47 PM drdoc: btdt with an insane ex
03:54 PM drdoc: I may have to try this dust shoe design:
03:54 PM drdoc: https://www.youtube.com/watch?v=PpR8z0zTFao
03:55 PM drdoc: https://www.cnczone.com/forums/diy-cnc-router-table-machines/374424-david-new-2x3-bench-top-cnc-5.html
03:56 PM drdoc: might not get quite as involved with the manifold though...
04:34 PM Tom_L: andypugh, you have a reflow oven?
04:35 PM andypugh: I have a toaster oven, nought for reflow :-)
04:36 PM XXCoder: you can add pid to it
04:36 PM XXCoder: theres pid systems on amazon, you could just set temperate and put probe inside
04:36 PM Tom_L: i have a toaster oven for reflow. too bad you're not close, you could find a home for it
04:36 PM Tom_L: i doubt i use it anymore
04:37 PM Tom_L: XXCoder, all you need is an avr and high v control circuit
04:37 PM XXCoder: yeah fancy way heh
04:37 PM XXCoder: but if unskilled pid system is nice way around that
04:37 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/toaster_oven/toaster_oven_index.php
04:38 PM XXCoder: but i suppose wouldnt need reflow oven if unskilled..
04:38 PM Tom_L: i insulated part of it
04:42 PM andypugh: I have made a few PID-controlled ovens. And added a PID to my bullet-casting thingy (I don’t cast bullets, I make pewter)
04:43 PM andypugh: https://photos.app.goo.gl/anr9Juf5jefhfuGE6
04:43 PM Tom_L: i recall that one
04:43 PM Tom_L: might be a tad bit hot for pcb
04:43 PM Tom_L: ;)
04:43 PM XXCoder: andy cool
04:44 PM andypugh: https://photos.app.goo.gl/nuQb65P4gWERKTnC8
04:44 PM XXCoder: andy theres cheap small casting kiln now
04:44 PM XXCoder: 200 usd something? small amount of metal though
04:44 PM andypugh: That last one could probably be a commercial product.
04:46 PM andypugh: And an article on making a heat-treatment furnace from my blog. http://bodgesoc.blogspot.com/2014/11/heat-treatment-furnace.html
04:46 PM XXCoder: https://www.banggood.com/DANIU-AC110V-or-220V-2100W-3KG-Gold-Melting-Furnace-Digital-Melting-Furnace-Machine-Heating-Capacity-Casting-Refining-Metals-Gold-Silve-p-1695284.html
04:46 PM XXCoder: 299 usd
04:46 PM XXCoder: add locking for tongs though it dont hold well and myfordboy guy dropped it
04:46 PM XXCoder: he added one quick
04:47 PM andypugh: The first link was my take on the melting furnage, but sized bigger.
05:19 PM _unreal_: FREAKING HELLLL that was a big BOOM
05:19 PM _unreal_: T storm
05:20 PM -!- #linuxcnc mode set to +v by ChanServ
07:22 PM -!- #linuxcnc mode set to +v by ChanServ
07:31 PM _unreal_: ok just finished doing an other burn
07:32 PM _unreal_: one side ok other side rather fucked up
07:32 PM _unreal_: more learning curve BS
07:32 PM _unreal_: just found out that LASERGRBL has a wild error in its coding
07:33 PM _unreal_: and the only way to get rid of the error is to convert the image to gcode as lasergrbl does. convering vector and raster images to laser type gcode. then I have to edit out a Z movement.
07:34 PM _unreal_: there are no z controls or settings in laser grbl there is no "Z" in lasers generally..
07:34 PM _unreal_: for some FUCKED UP reason. if I open an SVG file. it will do all of the conversions everything JUST fine
07:34 PM _unreal_: and do the burn JUST FINE
07:35 PM _unreal_: but it will finish with a g0x0y0Z-5
07:35 PM _unreal_: WTF
07:35 PM _unreal_: z-5
07:36 PM _unreal_: if I dont SAVE the converted images as an OUTPUT gcode file EDIT THE GCODE to get rid of this z-5 its auto part of the conversion files.
07:36 PM _unreal_: soooooo annoying
07:51 PM -!- #linuxcnc mode set to +v by ChanServ
08:02 PM -!- #linuxcnc mode set to +v by ChanServ
08:11 PM -!- #linuxcnc mode set to +v by ChanServ
08:12 PM roycroft: you set the z height manually with a laser
08:13 PM -!- #linuxcnc mode set to +v by ChanServ
08:14 PM -!- #linuxcnc mode set to +v by ChanServ
08:35 PM -!- #linuxcnc mode set to +v by ChanServ
08:37 PM -!- #linuxcnc mode set to +v by ChanServ
09:31 PM drdoc: what gauge wire do I want for 3A steppers? From 7i06 to drives and from drives to motors
09:31 PM drdoc: Will twisted pair matter?
09:34 PM roycroft: i think you want 18ga wire for that
09:35 PM drdoc: that's my thinking, based on various formulae
09:35 PM roycroft: and i think you want shielded cables, because they will be very noisy
09:35 PM drdoc: 4-conductor shielded is cheap, but twisted pair sends price through the roof
09:37 PM -!- #linuxcnc mode set to +v by ChanServ
09:37 PM Tom_L: shielded it a good idea
09:38 PM skunkworks: I think I would go shielded over twisted..
09:38 PM skunkworks: if you can't have both
09:38 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Wiring/Wire1.jpg
09:38 PM Tom_L: i used that
09:38 PM drdoc: skunkworks: shielded is a given
09:38 PM XXCoder: interesting
09:38 PM XXCoder: i need to get better wires for my cnc rputer
09:38 PM Tom_L: and GND the stepper frame
09:39 PM XXCoder: and probably steppers too, ones on it suck
09:39 PM drdoc: oh yeah
09:39 PM -!- #linuxcnc mode set to +v by ChanServ
09:40 PM -!- #linuxcnc mode set to +v by ChanServ
09:41 PM -!- #linuxcnc mode set to +v by ChanServ
09:45 PM Tom_L: finally.
09:46 PM Tom_L: skunkworks, tell pops i missed a couple days :(
09:46 PM roycroft: so this was odd
09:46 PM roycroft: i needed some m5 button head flange screws
09:47 PM roycroft: mcmaster had them in 316 for 1/5 the cost of 18/8
09:47 PM roycroft: 316 is almost always slightly more expensive than 18/8
09:47 PM Tom_L: 18/8 regular steel?
09:48 PM roycroft: 18/8 stainless steel
09:48 PM roycroft: which is close to 304 in formulation
09:50 PM -!- #linuxcnc mode set to +v by ChanServ
09:50 PM roycroft: they are both 18% chromium and 8% nickel, but 304 has 0.08% carbon
09:55 PM -!- #linuxcnc mode set to +v by ChanServ
09:57 PM -!- #linuxcnc mode set to +v by ChanServ
10:23 PM -!- #linuxcnc mode set to +v by ChanServ
10:29 PM drdoc: okie dokie
10:42 PM drdoc: I've been looking at this case for the lcnc box
10:43 PM drdoc: https://www.facebook.com/marketplace/item/356759852177927
10:43 PM drdoc: but not off FB
10:44 PM drdoc: https://www.ebay.com/itm/254803061657
10:44 PM drdoc: gotta love a little markup
11:04 PM roycroft: i found a rustoleum metallic dark blue paint that is close enough to the hammerite i've been using that it might work as a substitute
11:04 PM drdoc: excellent!
11:06 PM roycroft: yes
11:06 PM roycroft: and i certainly should not need a hammered paint for repainting a computer enclosure
11:07 PM roycroft: or for any other part of the cnc controller cart
11:20 PM -!- #linuxcnc mode set to +v by ChanServ
11:44 PM drdoc: huh.
11:47 PM drdoc: this driver's docs say "In setting the driver output current, multiply the specified phase current by 1.4 to determine peak output current"
11:49 PM drdoc: that means if the motor's rated at 3A/ph I'm supposed to set the driver to 4.2A?
11:50 PM drdoc: that feels a little sketchy
11:50 PM drdoc: 23HD76002Y-21B motor, DM542 driver
11:52 PM drdoc: the settings are for peak current, not RMS, fwiw
11:53 PM drdoc: I think I'm gonna do what I do on the 3D printers when I don't trust the driver or motor's spec sheet
11:54 PM drdoc: set it pretty low and then ramp up the current till the motor gets cool enough to touch but too hot to hold