#linuxcnc Logs

Sep 25 2018

#linuxcnc Calendar

12:00 AM miss0r: I wouldn't know :) I haven't used linuxcnc for a few years. I'm only building a new controller for it now
12:16 AM miss0r: fragalot: !
12:20 AM pink_vampire: I just LOVE it when the machine beep at the end
12:28 AM trentster: miss0r:
12:28 AM trentster: Am Now :-)
12:28 AM pink_vampire: I just machine the BEST finish so far
12:34 AM pink_vampire: finish https://i.imgur.com/GciUzVs.png
12:37 AM CaptHindsight: https://www.youtube.com/watch?v=ZZoMtutnSMI CNC controlled airbrush done with LinuxCNC
12:38 AM pink_vampire: HF air brush
12:38 AM pink_vampire: i have the same one
12:38 AM CaptHindsight: https://www.youtube.com/watch?v=eSdnEYU8rVk Cnc airbrush
12:39 AM pink_vampire: CaptHindsight: how is the X/Y work with the cables?
12:40 AM CaptHindsight: https://youtu.be/QQcSMA2_b4A?t=49s surprised by how simple these are
12:41 AM CaptHindsight: they don't modulate nozzle distance from substrate, air pressure or ink volume
12:42 AM pink_vampire: why you need it?
12:46 AM pink_vampire: what is the advantage of it over printer?
12:47 AM CaptHindsight: https://www.youtube.com/watch?v=aAIeZeglY5c Airbrush CNC Support and Control with Marlin
12:49 AM pink_vampire: CaptHindsight: do you want to build one?
12:49 AM CaptHindsight: the last one modulates ink volume
12:50 AM pink_vampire: they use servo
12:50 AM pink_vampire: https://www.thingiverse.com/thing:2396745
12:56 AM Wolf__: I would have never thought of cncing a airbrush…
01:11 AM veek: check out ettlinger new illustrated guide to everything sold - must read (but i think you guys will know most of what's in it)
02:01 AM Deejay: moin
02:01 AM pink_vampire: hii Deejay
02:01 AM Deejay: hi pink
02:01 AM pink_vampire: any cool parts?
02:02 AM Deejay: nope
02:02 AM pink_vampire: :(
02:29 AM Loetmichel: niice :-( 1.5 hours at work and the workshop alreday stinks like hot PVC... milling 400*300mm*8mm PVC plate down to 4,75mm with a 6mm two flute... MAAAN that takes its sweet time...
04:09 AM XXCoder: hundreds of "washers"
04:09 AM XXCoder: fun
04:10 AM XXCoder: got seriously sick severial times but managed to use my will to stay on all way to end of shift
04:30 AM pink_vampire: hi XXCoder
04:30 AM XXCoder: hey whats up
04:31 AM pink_vampire: I'm fine
04:31 AM pink_vampire: geep the machine busy
04:31 AM pink_vampire: and cook the same time
04:31 AM pink_vampire: keep*
04:31 AM XXCoder: just be sure not to cook chips :D lol
04:35 AM pink_vampire: i need better pump for the coolant
04:35 AM XXCoder: whats you using now?
04:36 AM pink_vampire: some "rv style" pump
04:36 AM pink_vampire: noisy as f*ck
04:36 AM pink_vampire: and it is over heat
04:37 AM XXCoder: how about fountain pump thingy?
04:37 AM XXCoder: hobby stores tend to have em
04:37 AM XXCoder: its designed to run forever
04:38 AM pink_vampire: i need to pump the coolant about 1.5 meter high
04:38 AM XXCoder: various different designs but theres ones that can spray coolant that high
04:38 AM XXCoder: let alone in hose
04:39 AM pink_vampire: i mean the spindle coolant that go in to the body of the spindle
04:39 AM XXCoder: ahh yeah that requires more :)
04:40 AM pink_vampire: i want it to be quiet
04:41 AM XXCoder: lol this is interesting https://blog.gardenloversclub.com/diy/solar-fountain-pump-review/
04:41 AM pink_vampire: 10 mbar..
04:41 AM pink_vampire: maybe 10..
04:43 AM XXCoder: "does not work when partially in shade" lol
04:44 AM pink_vampire: what about permanently in the shed?
04:44 AM XXCoder: I wonder if it has off switch
04:45 AM pink_vampire: just put some hefty bag on it , and call it done
04:45 AM XXCoder: I guess blocking light would basically turn ut off yeah
04:56 AM X704 is now known as tiwake
05:05 AM XXCoder: dang 3.4 million chickens drowned
05:06 AM XXCoder: hurricane florence
05:31 AM jthornton: morning
05:31 AM XXCoder: hey jthornton
05:31 AM XXCoder: remember guy who got seriously hurt with hand?
05:32 AM jthornton: yea
05:32 AM XXCoder: he come in today, not to work but let us all know whats going on
05:32 AM XXCoder: apparently he got some musicle and ligiments cut from arm and put into hand
05:32 AM jthornton: dang
05:32 AM XXCoder: from what I recall it means he is permently weaker on right arm but hey if it means hand works...
05:33 AM jthornton: yea
05:33 AM XXCoder: anyway im sure he will be in PT for months so not back anytime soon
05:44 AM XXCoder: man
05:44 AM XXCoder: wish I am a billionare, so I can buy elio and make it happen finally
05:44 AM XXCoder: its been long wait
05:45 AM jthornton: elio stalled out?
05:45 AM XXCoder: yeah funding issues still
05:45 AM XXCoder: testing cars cost moolah
05:45 AM XXCoder: also building factory still
05:46 AM XXCoder: I hope eliocoin thing kicks off well and they get few million buckjs
05:46 AM XXCoder: but ehh I dunno lol
05:53 AM XXCoder: jthornton: so far elio stocks have peaked a little. was 3 bucks or less but now its higher 4
06:17 AM pink_vampire: what is the feed and speed for #80 solid carbide drill in hss?
06:19 AM jthornton: wow that is tiny
06:20 AM pink_vampire: i know
06:20 AM pink_vampire: 3mm deep
06:21 AM jthornton: do you have a hand feed chuck?
06:21 AM jthornton: that's the only way I've drilled holes < #60
06:21 AM pink_vampire: cnc
06:22 AM pink_vampire: I need to drill 32 holes like that
06:23 AM jthornton: look up a feed and speed calculator
06:34 AM Laminae_: Hey guys, considering expanding my cnc empire a bit but i'm hoping someone has some wisdom with 4 axis hot wire with foam, any takers?
06:35 AM pink_vampire: Laminae_: sounds cool
06:35 AM pink_vampire: what do you have now?
06:36 AM Laminae_: Kern c02 200w, a cbeam cnc router and a few 3d printers
06:36 AM Laminae_: Running linuxcnc on the cbeam
06:37 AM Laminae_: I'm not finding much documentation for hot wire on linuxcnc
06:37 AM Laminae_: It has clearly been done though
06:37 AM jthornton: Laminae_: axis can do hot wire
06:37 AM pink_vampire: with 200W you can cut steel
06:37 AM jthornton: you select the foam option IIRC
06:37 AM Laminae_: eh, it's not very practical for steel
06:38 AM pink_vampire: what you are cutting with that?
06:38 AM Laminae_: Well, i'm really wanting to cut 1.9lb epp which is some dense stuff
06:38 AM Laminae_: Primarily foam actually, but acrylic and wood pretty frequently too
06:38 AM pink_vampire: you are in the RC stuff?
06:39 AM Laminae_: What gave me away <.<
06:39 AM Laminae_: ?
06:40 AM Laminae_: I have the cnc router and printers are at home, the laser is at work
06:41 AM Laminae_: I have a ton of mdf (1/2" to 1") and hdpe (1/4), enough that i think i could build a frame plenty rigid enough to cut foam out of it. I can't find details about cam for hot wire
06:41 AM Laminae_: I pretty much just use fusion because i've never needed anything else
06:42 AM pink_vampire: it is like wire edm
06:43 AM pink_vampire: same code
06:43 AM Laminae_: One sec, gonna google foo through that
06:43 AM pink_vampire: you want xy / xy, or xyz?
06:43 AM Laminae_: I saw that somewhere else and i was confused because i though that was waterjet
06:44 AM Laminae_: xyz
06:44 AM pink_vampire: so any 2D cam will work for that
06:44 AM Laminae_: THis is essentially what i'd like to use https://www.youtube.com/watch?v=yKpq9FZMPqQ
06:44 AM pink_vampire: you only need something special if you have XY XY
06:45 AM Laminae_: I'm hoping i can use super cheapie drivers for this since i won't be pulling much current at all
06:46 AM Laminae_: I'd rather not fork over the monies for another 7i76e but that would probably be the simpolest option so i can just plug it into the same computer that runs the cbeam
06:46 AM jthornton: no need for a 7i76e a 7i96 will do for that
06:46 AM Laminae_: jthornton: thanks again for your help setting my machine up
06:46 AM Laminae_: I really appreciate it!
06:47 AM jthornton: your welcome, have you looked at the 7i96?
06:47 AM pink_vampire: in the video each side is independent, so you have XY on one side, and X2 Y2 on the other side
06:47 AM Laminae_: Plus z
06:47 AM pink_vampire: it is 4 axis machine not xyz (3 axis)
06:47 AM Laminae_: Sorry thought i said four axis to start
06:48 AM pink_vampire: you can think about it as 2 ZY machine or ZX
06:49 AM jthornton: Laminae_: there is an axis sim for foam
06:50 AM pink_vampire: maybe ? https://www.foamwork.net/index.html
06:50 AM Laminae_: In fusion?
06:50 AM pink_vampire: no! in linux cnc
06:50 AM Laminae_: I missed that!
06:50 AM Laminae_: Awesome!
06:51 AM Laminae_: If that software works well it is reasonably priced
06:51 AM pink_vampire: but it is just the display
06:51 AM Laminae_: Last update was 2011 makes me question compatability
06:52 AM pink_vampire: i remember this program http://www.profili2.com/eng/default.asp
06:53 AM pink_vampire: Laminae_: g code is from 1960 or so..
06:53 AM Laminae_: I mean whether the program will run on my hardware haha
06:56 AM pink_vampire: it is foam!! +- 0.5mm is almost nothing to worry about. the tolerance is huge, so even if you get something that just make dot to dot gcode, and it is not support arcs, you will be fine
06:59 AM jthornton: my G code logger supports arcs now
07:00 AM pink_vampire: "G code logger"?
07:00 AM jthornton: yea you jog to a point then select the type of move to get to that point and it records it so you can build a G code file
07:01 AM Laminae_: I think this guy needs a better microphone but this is really cool https://imgur.com/a/43JtOmR
07:01 AM pink_vampire: i just ask hsm
07:01 AM Laminae_: Oops, wrong link
07:01 AM Laminae_: https://www.youtube.com/watch?v=BbFNQtgyFIg
07:04 AM Loetmichel: XXCoder: fountain pumps work well for low pressure
07:04 AM Loetmichel: not so good if it has to lift much
07:05 AM * Loetmichel has a micro fountain pump running at home for the spindle coolant... it takes an effort to lift the water up to the spindle if it had air in the system.
07:06 AM Loetmichel: https://www.youtube.com/watch?v=a9Ov69t0uwo and thats not much to lift, maybe 80cm
07:06 AM Loetmichel: oh... scrollback not down all the way, sorry
07:07 AM pink_vampire: Loetmichel: i need a new pump
07:07 AM pink_vampire: I hate a noise
07:08 AM Loetmichel: pink_vampire: spindle coolant or flood coolant?
07:08 AM pink_vampire: spindle
07:09 AM pink_vampire: "water cooled spindle"
07:43 AM * jthornton is always skeptical about videos that start out easier than you think
07:56 AM miss0r: 'afternoon
07:56 AM jthornton: morning
07:56 AM miss0r: Depends ;)
07:57 AM jthornton: yea I ran into that last night with python and dates lol
07:58 AM jthornton: my chicken door program failed because date.today() returns the UTC date and not the local date lol
07:58 AM miss0r: lol
07:58 AM miss0r: Now thats not something you hear everyday :D
07:59 AM jthornton: yea it worked in the am but after 6pm failed lol
07:59 AM jthornton: I'm going like WTF is wrong
08:00 AM miss0r: hehe
08:01 AM * jthornton has to figure out how to make a mold for a fiberglass part
08:04 AM miss0r: Interresting.
08:04 AM miss0r: What are you molding?
08:04 AM jdh: pink foam board for 1 shot molds
08:04 AM jthornton: a cover for the air filter kit I sell for the Can Am Spyder
08:04 AM jthornton: I'm making a wood plug on my neighbors lathe
08:05 AM miss0r: :D
08:05 AM jthornton: I want to end up with either vacuum or a 2 part mold
08:06 AM jdh: airplane guy on youtube makes a lot of carbon fiber molds in no time
08:06 AM jthornton: which guy?
08:06 AM jdh: mike patey
08:07 AM jdh: draco ep 14 extras has a wood mold
08:09 AM jthornton: he's a lot too dramatic for me and not so much content for a 5 minute video lol
08:17 AM jdh: yeah. pretty repetitive too. seems to be pretty talented though
08:17 AM jdh: makes a lot of parts on cnc.
09:15 AM pink_vampire: https://www.youtube.com/watch?v=tyaH-dG_Q3M
10:21 AM JT-Shop: JT-Shop did some calculations on SS and if you wait 12 months after you turn 100% you don't get ahead till your 81
10:31 AM methods_: http://qrznow.com/two-way-vhfuhf-radios-may-not-be-imported-advertised-or-sold-in-the-us-unless-they-comply-with-the-commissions-rules/
10:31 AM methods_: lame
10:41 AM rmu: methods_: what about SDRs like the USRP and the like?
10:41 AM rmu: these things cover DC to 6GHz
10:45 AM methods_: those are just recievers
10:46 AM methods_: oh i guess those are more than just sdr's
10:47 AM methods_: i would assume that they would be complying with fcc
10:48 AM rmu: no, those are bidirectional
10:48 AM rmu: and multichannel
10:49 AM rmu: there are many more like that, like limesdr, limesdr-mini, hackrf, ...
10:54 AM rmu: those things are as compliant to regulations as the software thats running on the host pc wants them to be
10:55 AM methods_: hmmm
10:57 AM sync: same with any smartphone
10:58 AM beachbumpete1: afternoon linuxCNC ;)
10:59 AM rmu: but with a smartphone you usually don't get to control the software on the modem side of things, and last i looked next to no hardware dox are available for the modem chips
10:59 AM beachbumpete1: This point cloud stuff is cool....and frustrating at times LOL
12:09 PM CaptHindsight: methods_: they go after all the low hanging fruit
12:09 PM methods_: yeah
12:10 PM CaptHindsight: I was picking up some RC servos at the hobby store and they manager told me that the FBI and HS stopped by and asked them to call if anyone stops by looking for drones that can carry 20+lbs and fly for 30+ minutes
12:11 PM CaptHindsight: do they sell the parts to build one? sure
12:11 PM CaptHindsight: just not anything pre-assembled
12:13 PM CaptHindsight: remember when they considered banning ADC's when they were going after music sharing?
12:18 PM FinboySlick: CaptHindsight: Haha, they're trying to protect their copyright on what happend in Venesuella?
12:23 PM fragalot: hey
12:28 PM CaptHindsight: 1/12 scale B-17 with 20Kg payload and 1 hour flight time
12:30 PM CaptHindsight: https://www.youtube.com/watch?v=bjvV8F26qzM similar
12:58 PM miss0r: 'evening
01:02 PM diverdude: Hi fellas, sorry but I gotta ask this again. Given this motor: http://www.leadshine.com/UploadFile/Down/573Sxx.pdf which at full step runs 0.15mm per step can at max speed run 2400/60*0.15=6mm/sec, and at half step maximum 3mm/sec? (2400 because this is maximum what is shown in graph in datasheet)
01:03 PM fragalot: diverdude: if you drive can handle it it can still run 6mm/sec regardless of if it's in half step mode or not
01:03 PM fragalot: you just need to send twice the frequency of steps
01:04 PM diverdude: fragalot: ok i see, but topspeed is 6 mm/sec nomatter what i do then?
01:04 PM fragalot: kinda :)
01:04 PM diverdude: ish
01:04 PM fragalot: the top speed mainly depends on the voltage you use to drive the motor
01:05 PM fragalot: and the motor itself, obviously
01:05 PM diverdude: fragalot: ok...i have a 24V power supply
01:06 PM fragalot: which one of those motors do you have in the PDF?
01:06 PM diverdude: fragalot: so those graphs in datasheet which up to 2400RPM should not be seen to what this motor can do at max?
01:07 PM diverdude: fragalot: i got the s09
01:07 PM fragalot: on a 24V power supply, that motor can run at 10rps, or 600rpm max
01:08 PM fragalot: https://daycounter.com/Calculators/Stepper-Motor-Calculator.phtml <=
01:08 PM diverdude: fragalot: wow so its even slower
01:09 PM fragalot: the 2400rpm you looked at is when it's lost almost all of it's torque, so it won't be able to actually move anything reliably anymore
01:09 PM fragalot: AND that curve is at 45Vdc
01:10 PM diverdude: fragalot: yeah i just saw that.
01:21 PM diverdude: fragalot: ah sorry...i think i miscalculated...if motor runs 300 steps/rev and 0.15mm/step and 11.4 rev/sec(at max), top speed is 514 mm/sec. Correct?
01:23 PM fragalot: 513mm/S
01:23 PM fragalot: that's quite fast, what is this for and how is it built?
01:25 PM diverdude: fragalot: yeah...it is quite fast actually. I dont need all that speed, i need more smooth stepping, so drive allows me to do down to 1/64 microsteps. Its for microscopy
01:26 PM * fragalot thinks you'd be a lot better off with a smaller step size
01:26 PM fragalot: eg. no belt drive like you're probably using now
01:26 PM fragalot: but a screw type
01:26 PM diverdude: yeah im using belt drive
01:26 PM diverdude: a screw type? what is that?
01:26 PM fragalot: literally using a screw to move the axis
01:27 PM diverdude: oh - can you maybe show me a picture of how that looks?
01:27 PM fragalot: either a ballscrew, acme, or a cheap threaded rod depending on your needs
01:28 PM fragalot: diverdude: you just use the motor to turn a screw, which then moves your axis
01:28 PM fragalot: if you don't need the speed, it can be a lot more accurate & smooth than belts
01:29 PM diverdude: fragalot: well ok...i need speed, but not that much speed
01:29 PM fragalot: so a 5mm pitch ballscrew would work there
01:29 PM fragalot: or 10mm
01:30 PM fragalot: if you have a standard 180step stepper motor, that still gives you a 0.027mm or 0.056mm step size before you even start microstepping
01:30 PM fragalot: and at 600rpm, 3000mm/min and 6000mm/min
01:30 PM diverdude: yeah ok, nice
01:32 PM diverdude: fragalot: but hang on...now i know i can run 513mm/sec at top speed, full stepping. Thats at 300steps/sec. Lets say I wanted to maintain this speed 1/64 microstepping, then I would have to pulse 19200 times/sec right? How can i know if that is possible? Can i somehow calculate that?
01:33 PM diverdude: (i am talking theoretic here for learning purposes...not saying i need or want that)
01:33 PM fragalot: depends on the drive you use (read the datasheet), and what you are using to generate the steps
01:34 PM diverdude: fragalot: i am using a drive like this: http://www.leadshine.com/UploadFile/Down/573Sxx.pdf
01:35 PM diverdude: fragalot: ahhh it says Up to 10,000 steps resolution
01:35 PM fragalot: if you're using a mesa card it's probably not an issue, but I doubt a parallel port can generate a 20kHz signal
01:35 PM fragalot: the file you linked is the motor again :P
01:35 PM diverdude: fragalot: no, i am not using mesacard
01:36 PM diverdude: fragalot: oh sorry - my mistake
01:36 PM diverdude: i meant to post this http://www.leadshine.com/UploadFile/Down/3MD560d.pdf
01:37 PM * jthornton gives up trying to find the microstepping myths page
01:37 PM fragalot: pulse input frequency goes to 200kHz, so assuming the datasheet is correct, it should be fine
01:37 PM fragalot: but don't expect microstepping at 10k steps to be accurate
01:37 PM diverdude: fragalot: but it says: 8 selectable resolutions up to 10000 steps/rev
01:38 PM fragalot: diverdude: sure, but if it had a max input frequency of say, 10kHz, that would mean you could do no more than 10 revs per second at 10k microstepping
01:38 PM fragalot: (which is a ridiculous number anyway)
01:39 PM diverdude: the one i have is actually slightly different...it goes to 12800
01:39 PM CaptHindsight: diverdude: whats the range of travel? 100 x 100mm?
01:40 PM diverdude: CaptHindsight: no its more than that, but i have way to much speed, i know
01:40 PM fragalot: man the media is eating up this whole possible power shortage thing this winter (AGAIN)
01:41 PM fragalot: and it's sickening hearing the reporters TRY to corner and push the politicians they interview into saying certain things that both parties know is untrue
01:42 PM fragalot: diverdude: bear in mind that 'speed' only matteres if you have enough travel to actually get there
01:42 PM * jthornton wanders out to the shop to try and get something done... anything really
01:42 PM fragalot: because stepper motors need time to work up to their max RPM
01:43 PM CaptHindsight: <-- been saving up the power from summer to use all winter
01:43 PM diverdude: fragalot: yeah i know...i am still at the "understanding principles" stage
01:43 PM diverdude: fragalot: i am using accelstepper, so yeah they ramp up and down
01:44 PM fragalot: CaptHindsight: we have 7 nuclear plants. Only 1 is operational, the others are literally falling apart because they keep saying they will shut down "next year"
01:44 PM fragalot: and they have been saying this for the past.. 28 years
01:44 PM fragalot: yet no viable alternatives have been built :)
01:45 PM diverdude: fragalot: i dont get it...why are nuclear plants shutting down all over the place and coal plants popping up :/
01:45 PM diverdude: i think its kinda dumb
01:45 PM fragalot: diverdude: nuclear plants here are shutting down because they are literally falling apart due to a lack of investments & preventive maintenance
01:45 PM fragalot: there is no coal power here, and there won't be
01:45 PM diverdude: fragalot: yeah but they should put the resources to renew them or build new ones
01:45 PM fragalot: there is talk about using gas powered for backup
01:46 PM fragalot: diverdude: yup.
01:46 PM fragalot: but they don't
01:46 PM diverdude: fragalot: where are you at?
01:46 PM fragalot: belgium
01:46 PM diverdude: ahh
01:46 PM diverdude: germany is also shutting down all nuclear plants
01:46 PM CaptHindsight: still lots of money left in selling fossil fuels
01:46 PM diverdude: its like we just do everything we can to smash down nature
01:47 PM diverdude: denmark is running on coal as well...sure we have a lot of wind energy...but thats not really reliable
01:49 PM diverdude: and then we fall back on fossil fuels
01:49 PM diverdude: nuclear plants just makes so much sense to any rational human being i would say
01:49 PM CaptHindsight: well rational
01:50 PM CaptHindsight: there is your answer
01:50 PM diverdude: yeah :/
01:50 PM fragalot: xD
01:51 PM SpeedEvil: Solar has gotten _ridiculously_ cheaper over the past little while.
01:51 PM fragalot: the problem is the bad image they've gotten
01:51 PM SpeedEvil: As in under $0.5/peak watt.
01:51 PM diverdude: SpeedEvil: that is true...but again...pretty unreliable unless living in sahara :/
01:51 PM fragalot: SpeedEvil: it has, but without being able to store them efficiently / cheaply, it's no good in winter in central europe
01:51 PM CaptHindsight: people round heres fought against solar since the solar farms would suck all the light out of the air
01:52 PM SpeedEvil: fragalot: that is an issue, though better housing stock can mitigate that.
01:52 PM diverdude: CaptHindsight: hahahaah good one :D
01:52 PM SpeedEvil: Also, in principle, continental scale interconnectors.
01:52 PM SpeedEvil: But that raises other issues.
01:52 PM fragalot: SpeedEvil: it does
01:52 PM diverdude: CaptHindsight: you could probably make a campaign like that and people would buy it :D
01:53 PM fragalot: the whole "get an electric car so it can power your house" thing makes me laugh though when brought up as an alternative
01:53 PM fragalot: because it can power your house at night, whilst it's charging from the nighttime solar panels, and your house can then be powered with the solar panels when you're at work with said car during the day
01:54 PM fragalot: >.>
01:54 PM SpeedEvil: fragalot: depends on your use-case, it can make for a small minority of people a useful addition.
01:54 PM CaptHindsight: diverdude: it's that stupid here
01:54 PM diverdude: fragalot: i do get the idea about electric cars though....but makes most sense when fueled by nuclear plants
01:54 PM SpeedEvil: That number of people is very small.
01:54 PM diverdude: CaptHindsight: i think everywhere
01:54 PM fragalot: diverdude: i have nothing against electric cars
01:54 PM fragalot: but the whole "use it as a power source for your house" is BS.
01:54 PM diverdude: fragalot: haha well that just makes no sense
01:55 PM CaptHindsight: there is a free charging station near here for Teslas
01:55 PM fragalot: same thing with the tesla power wall thing
01:55 PM fragalot: at least in belgium it makes zero financial sense
01:55 PM CaptHindsight: I was wondering how long I could charge a battery pack before they get wise and change the rules
01:56 PM SpeedEvil: I assume there is some agreement saying you can't extract power for general use from your battery.
01:56 PM diverdude: fragalot: stupid campaigns collect a lot of money
01:56 PM fragalot: because if you have solar panels, pushing back to the grid and running your meter backwards is how you avoid paying for power
01:56 PM CaptHindsight: having packs the size of a bus
01:56 PM SpeedEvil: CaptHindsight: install a rolling road in your garage.
01:56 PM fragalot: you're effectively using the grid as the battery (from a fiancial POV)
01:56 PM fragalot: and if you're connected to the grid, and have solar panels, regardless of if you feed back or not, you pay for it
01:56 PM fragalot: disconnecting from the grid is illegal
01:57 PM fragalot: ergo.. powerwalls are worthless here. :)
01:58 PM fragalot: CaptHindsight: I think your battery pack needs to negotiate with their charger cloud before it is allowed to take the juice.. and it's monitored on the fly, you start to get charged after a while
01:58 PM CaptHindsight: https://goo.gl/maps/Ts4VrJFd1mz
01:59 PM * JT-Shop came back from town with the missus and I round the corner and see my 6 tomato plants all wilted and make a comment the plants need some water look how wilted they are... the wife says maybe they have too much water... screeeeech bang I guess we'll find out
02:00 PM fragalot: JT-Shop: I remember having that same conversation about our peppers
02:00 PM fragalot: so we decided to water one, and leave the other
02:01 PM SpeedEvil: fragalot: only if you are permitted to feed back at the same price you pay. In the UK, you are not.
02:01 PM fragalot: both lost their leaves and died the next day
02:01 PM fragalot: >.>
02:01 PM fragalot: SpeedEvil: in belgium you do not get any money back for feeding back
02:01 PM diverdude: fragalot: sorry, one more stupid question. Lets say i need 19200 pulses/sec to keep the 513mm/sec, then i only need up 20Khz pulse frequency supported in the driver theortically right?
02:01 PM fragalot: your meter only runs backwards
02:01 PM fragalot: if you run it back too far, they just reset their stats to that number for your next invoice
02:01 PM fragalot: if it runs forward in between readings, you pay for the difference
02:02 PM JT-Shop: I've been watering them 4-6 times a day and as soon as I water them they come back
02:02 PM CaptHindsight: look how big uhmerican cars are compared to just about anywhere else
02:02 PM JT-Shop: I just quit watering those
02:02 PM fragalot: so it is in your best interest to try to keep the number as stable as possible when read
02:02 PM SpeedEvil: Legally here, you are paid 1/10th of the normal unit price as 'export' - before any other incentives, which get complex.
02:02 PM fragalot: the incentives are gone here
02:03 PM fragalot: they overpromised a decade ago
02:03 PM fragalot: got burnt
02:03 PM fragalot: now everyone has to pay for it
02:03 PM JT-Shop: fragalot: I have 3 tomato plants in one 5 gallon size planter and they need water every few hours when the sun is shining on them
02:03 PM JT-Shop: that was a mistake to put that many in a 5 gallon planter...
02:03 PM fragalot: lol
02:04 PM JT-Shop: but they were so small and cute when they were just seedlings
02:05 PM CaptHindsight: eggplants take over
02:05 PM CaptHindsight: same with corn
02:05 PM fragalot: we planted borage once
02:05 PM JT-Shop: I have a sweet potato that has taken over the ground of one raised bed planter
02:05 PM CaptHindsight: all cute and in rows next to everything else and then a month goes by and everything else is dead
02:05 PM fragalot: still haven't managed to get rid of it
02:07 PM CaptHindsight: out here you can rent small fields
02:07 PM CaptHindsight: grow just about anything
02:09 PM CaptHindsight: https://farmdocdaily.illinois.edu/2017/08/illinois-farmland-rents-2017-state-values.html
02:11 PM CaptHindsight: FinboySlick: does Canada still offer citizenship if you move and farm somewhere in the middle?
02:19 PM FinboySlick: CaptHindsight: Hmmm... I think the only requirement is to accept the Queen as your ruler and the seat of God's dominion on earth.
02:21 PM FinboySlick: You may have to claim one of the 78 official genders to qualify as a political refugee though.
02:26 PM fragalot: FinboySlick: is canadian an allowed gender?
02:28 PM FinboySlick: Oh all genders are allowed. We just legally mandate 78 official pronouns for them, which you are compelled to use under that law.
02:29 PM CaptHindsight: FinboySlick: so I'm already Canadian!!
02:35 PM JT-Shop: I guess so long as the patches don't overlap each other you can just keep patching a mountain bike tube...
02:36 PM CaptHindsight: fragalot: forgot about their business model, most feastures are already there, you just pay to unlock them like a video game
02:36 PM fragalot: CaptHindsight: who'se business model?
02:36 PM CaptHindsight: Tesla
02:36 PM fragalot: Ah yeah
02:36 PM fragalot: but regardless of how much you pay
02:36 PM fragalot: you will still get a door handle that fails
02:36 PM fragalot: and trim that doesn't line up
02:37 PM fragalot: and uneven panel gaps
02:37 PM fragalot: and splines that wear out prematurely
02:37 PM fragalot: but other than that, they're alright cars :)
02:37 PM CaptHindsight: I find those features charming
02:37 PM gloops: 952 years since the death of Harald Hardrada and the end of the Viking Age
02:38 PM CaptHindsight: i didn't even know he was sick
02:38 PM fragalot: wait, harald passed?
02:39 PM CaptHindsight: at least your leaders don't get laughed AT by the UN
02:40 PM CaptHindsight: was a woosh moment
02:44 PM gloops: Hardradas invading army was humiliated by the english king Harold, and totally destroyed
02:44 PM gloops: 400 ships came, 12 left
02:45 PM CaptHindsight: why you don't mess with Yorkshire
02:46 PM CaptHindsight: invading 3rd world countries never works out well
02:46 PM rmu: was that the "bluetooth" harald?
02:46 PM gloops: yes thats him rmu
02:47 PM rmu: oi thought that guy was german/danish... hence the bluetooth runes
02:47 PM rmu: norwegeian
02:49 PM rmu: whatever the difference. 1000 years ago.
02:49 PM gloops: still important today, arguably the normans still rule the world
02:50 PM fragalot: that's mormons you're thinking of
02:50 PM CaptHindsight: had names Norman, but he was Jewish
02:50 PM CaptHindsight: had a friend named...
02:51 PM rmu: the concept of "normans" was a strange one then is definitely is without meaning now
02:51 PM CaptHindsight: didn't they invent Normandy
02:51 PM rmu: hehe... invent ;)
02:52 PM CaptHindsight: later to become the D-Day
02:52 PM gloops: oh i dont know rmu, i mean if i went back to the battle of 1066 dress in chain mail, theyd look at me and say - oh yeah, hes one of us
02:52 PM gloops: same genes
02:52 PM CaptHindsight: they teach us history pretty well here
02:53 PM rmu: gloops: you would probably stand out one head taller than the rest and would be put on a pyre for being a sorcerer
02:53 PM CaptHindsight: Vikings were from Scandinavia
02:54 PM gloops: the Normans too
02:54 PM rmu: "same genes" is bullshit
02:54 PM CaptHindsight: Scandinaviady would be too hard to say
02:55 PM gloops: i dont see why rmu
02:55 PM rmu: probaböy
02:56 PM gloops: i look just like the bloke on the coins
02:56 PM CaptHindsight: King Alfred kept the vikings out
02:56 PM rmu: i wouldn't even recognize your queen from the pound-coins
02:57 PM FinboySlick: Actually, the Normands were essentially what we know today as the French... I'm not sure how well they 'still rule the world' to be honest.
02:57 PM gloops: https://d13z1xw8270sfc.cloudfront.net/origin/116895/tudor_henry_vii_the_7th_replica_half_groat.jpg
02:57 PM CaptHindsight: FinboySlick: well they still control the east part of Canada
02:58 PM FinboySlick: 'control'... Hah!
02:58 PM CaptHindsight: even though they sold it during the Indian wars
02:58 PM FinboySlick: It's election month... You'd be amused what that control looks like right now.
02:58 PM CaptHindsight: sold us the hot a and humid parts
02:58 PM CaptHindsight: so we could raise mosquitoes
02:59 PM CaptHindsight: and dysentery
02:59 PM CaptHindsight: oh, I'll have to stream some Canadian TV
03:00 PM FinboySlick: I was watching the 'El-Chapo' netflix TV series, which has a surprising amount of politics in it. And it was rather interesting to see how similar mexican politics is to Quebec politics.
03:01 PM rmu: so harald bluetooth was king of denmark at about 958 abd 986, harald hadrada
03:01 PM rmu: hardrada
03:01 PM rmu: about 1046 to 1066
03:01 PM rmu: according to wikipedia
03:02 PM rmu: something doesn add up
03:02 PM FinboySlick: They hadn't invented the other vowels back then?
03:03 PM gloops: might be the other harald yes
03:03 PM FinboySlick: But which one was Ragnar?
03:03 PM gloops: im taking about the giant viking king, a living legend, could kill 6 men with one swing of his axe etc
03:03 PM rmu: seems the "engrish" had an "o" for "harold"
03:05 PM CaptHindsight: hah, we had Paul Bunyan
03:05 PM rmu: FinboySlick: look at en.wikipedia.org/wiki/High_German_consonant_shift, complicated stuff
03:06 PM CaptHindsight: and John Henry
03:06 PM FinboySlick: rmu: I'm just amused about how many 'a' were in the name.
03:07 PM CaptHindsight: well German has no silent letters or agendas
03:07 PM rmu: hehe... what is a silent agenda?
03:07 PM rmu: some words do have letters you don't pronounce
03:07 PM FinboySlick: Too much sauerkraut and you'll know what a silent but deadly agenda is.
03:08 PM FinboySlick: Admitedly, it isn't always silent.
03:08 PM CaptHindsight: rumor has it
03:08 PM rmu: sauerkraut won't be that silent
03:09 PM rmu: some people can't even keep it in "long enough"
03:09 PM CaptHindsight: wasn't that done on purpose to keep separate from the French while in battle?
03:09 PM CaptHindsight: the french would be shouting with all sorts of silent letters
03:09 PM FinboySlick: My uncle makes some pretty good traditional one. cabbage, salt, juniper berries in layers in a wooden barrel.
03:10 PM gloops: i did not win the euromillions lottery today
03:10 PM CaptHindsight: while the Germanic forces would pronounce every letter
03:10 PM rmu: i alwa<s thought sauerkraut was james cook's invention
03:10 PM CaptHindsight: definitely some Cook
03:11 PM CaptHindsight: why did everyone want to invade England?
03:12 PM CaptHindsight: it's an island
03:12 PM CaptHindsight: surrounded by water
03:12 PM FinboySlick: They just had a feeling if you let them go unchecked, they'd mess up the whole world.
03:12 PM CaptHindsight: not even fresh water
03:13 PM DaViruz: i dont think the english are one to talk when it comes to invading people
03:14 PM CaptHindsight: Canada has hockey, maple syrup, Mounties etc..
03:14 PM FinboySlick: And every 24th of June, Quebec celebrates having its ass kicked by them.
03:14 PM CaptHindsight: FinboySlick: to be fair, you weren't ready
03:15 PM CaptHindsight: if you had been ready then it might be different
03:15 PM FinboySlick: And France had sort of given up.
03:15 PM CaptHindsight: when was the last time france won a war?
03:16 PM CaptHindsight: it's not what they do
03:16 PM rmu: it seems harold was not king for very long, his brother allied with the norwegians, and after their defeat, harold was killed by the french
03:16 PM FinboySlick: rmu: Interesting. That's more or less how the last season of Vikings ended.
03:16 PM CaptHindsight: shit, and I didn't watch it yet
03:17 PM CaptHindsight: hey Spoiler Alert
03:17 PM FinboySlick: CaptHindsight: Not that big a spoiler, don't worry. That said, you watched the previous seasons, right? I think it went too widescale in the last two seasons. Was better when it was more focused on individual characters.
03:18 PM CaptHindsight: I've seen the first 2 episodes from Season 1
03:19 PM FinboySlick: Well, it's definitely good stuff. Probably a bit too good, which is why they're sort of stretching it out too much.
03:19 PM FinboySlick: But before they knew they'd have to run for so many seasons, they definitely put in some great work.
03:19 PM CaptHindsight: just got through watching season 1 of Barry
03:21 PM FinboySlick: I tried very hard to like that one but it didn't work. I like the actors but it feels like a sitcom. Clearly written for its audience rather than focused on the story.
03:21 PM FinboySlick: CaptHindsight: My #1 recommendation for a short, good series would be Fargo.
03:21 PM FinboySlick: Every season is its own self-contained 10 episode story.
03:21 PM CaptHindsight: wasn't in to the original
03:22 PM FinboySlick: Doesn't matter.
03:22 PM CaptHindsight: not really in my range of interest
03:22 PM FinboySlick: They wink and nod towards the movie but it's a different story.
03:22 PM CaptHindsight: tried the new stuff
03:23 PM FinboySlick: The first episode tells you 100% what you're in for and if you'll like it. If you haven't I suggest you give it a shot.
03:24 PM CaptHindsight: recently tried to follow some new ones, The rain, The terror, Brockmire,
03:25 PM FinboySlick: Oh they're definitely not in the same league.
03:38 PM diverdude is now known as Guest78608
04:01 PM Deejay: gn8
04:19 PM * JT-Shop just bought a 14" x 42" wood lathe... dunno why
04:22 PM SpeedEvil: :)
04:42 PM CaptHindsight: https://cdn.thingiverse.com/renders/e5/42/a8/1f/42/a831e3feabeefebf0cbd573ab49db7c9_preview_featured.jpg jikes
04:43 PM CaptHindsight: FDM printed linear positioner with non-acme lead screw
04:44 PM CaptHindsight: https://cdn.thingiverse.com/renders/ee/10/85/26/72/5f59a25ba262305213be915e88ad5286_preview_featured.jpg
07:25 PM _unreal_: ziper, I've been very busy, now what are you asking about a core that disolevs?
07:25 PM _unreal_: dissolves
07:37 PM andypugh: Salt cores?
07:44 PM ziper: _unreal_, yeah, whats the best option for a core I want to remove later but can't just a mandrel because of the geometry of the part?
08:10 PM CaptHindsight: ziper: what methods are available to you for making the mandrel?
08:10 PM CaptHindsight: FDM or SLA printer?
08:11 PM CaptHindsight: how will the part be built around the mandrel?
08:11 PM ziper: its really simply, just a triangular section like 6m long, I was going to make it by hand
08:11 PM ziper: thats the removable part
08:12 PM CaptHindsight: 6 meter length that won't slide out
08:12 PM ziper: the part that will stay will be a foam core, teardrop shape, about 2 inches by 10
08:12 PM ziper: CaptHindsight, right, so I want something that will dissolve
08:12 PM gregcnc: liquid nitrogen
08:13 PM CaptHindsight: water soluble resin
08:13 PM CaptHindsight: by hand you could use PVA
08:14 PM CaptHindsight: can you make it from styrofoam? it dissolves in acetone
08:15 PM ziper: yeah i suppose
08:15 PM gregcnc: there you go
08:16 PM CaptHindsight: carved from meat? Use lye to dissolve
08:17 PM CaptHindsight: paper mache
08:20 PM djdelorie: aluminum dissolves in HCl . . .
08:20 PM ziper: and naoh
08:22 PM gregcnc: https://youtu.be/M7HmLguvXZU?t=3m19s
09:20 PM _unreal_: ziper so you just want a core you can remove easy
09:20 PM _unreal_: Then look at the VERY low PSI rating cores
09:20 PM _unreal_: psi or oz rating....
10:12 PM skunkworks: Share
10:12 PM skunkworks: https://youtu.be/sZ4O84y_gpY
10:12 PM skunkworks: share?
10:21 PM Tom_L: nice idea
10:22 PM Tom_L: i used neoprene
10:24 PM skunkworks: i think neoprene is going to be the solution on the front of the y axis
10:25 PM Tom_L: we've got a rubber supply here i got some cutoffs for free
10:25 PM Tom_L: for grain elevators etc
10:26 PM skunkworks: ah. work has a steel rule die shop.. they use 1/8 inch neopreme for ejection
10:27 PM skunkworks: rubber
10:27 PM Tom_L: where yours is there, i hung a piece from Z and the Y one is attached to both ends
10:27 PM Tom_L: the front on mine is 1/8, the back is 1/16
10:27 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Assembly/Final/Way_Cover.jpg
10:28 PM Tom_L: the 1/8" is rigid enough it slides but i did have to add some bearings to keep it off the ends of the slides
10:28 PM Tom_L: it was starting to cut into it a little
10:28 PM skunkworks: ah
10:29 PM skunkworks: neat
10:29 PM Tom_L: got a pic somewhere..
10:30 PM skunkworks: dad thought mounting a pai
10:31 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Bearing_Bracket/Bearing_Bracket5.jpg
10:31 PM Tom_L: you can see where they were rubbing
10:31 PM skunkworks: dad thought mounting a brush on the x axis that reached down into the trough would wipe the shahings out each end
10:32 PM Tom_L: you may need something there
10:33 PM Tom_L: i've got a plastic guard around my table but chips still get there just not as bad
10:34 PM Tom_L: stole a couple of my kids roller skate bearings :)
10:34 PM skunkworks: did you weight the 1/8 inch neopene?
10:34 PM Tom_L: no but i could
10:34 PM Tom_L: oh, no i didn't need to
10:34 PM Tom_L: the 1/16 i had on there initially would catch
10:34 PM Tom_L: this is stiff enough it slides fine
10:35 PM skunkworks: vool
10:35 PM skunkworks: cool
10:35 PM Tom_L: if you have room that's what i'd use
10:35 PM Tom_L: i didn't have room for the 1/8 on the backside
10:35 PM Tom_L: but it works fine back there
10:36 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Assembly/Shims/Cover_slide_bracket.jpg
10:36 PM Tom_L: turned out as designed
10:37 PM skunkworks: sweei
10:37 PM skunkworks: jeeze
10:37 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Assembly/Final/Vise_parts/Vise2.jpg
10:37 PM skunkworks: sweet
10:37 PM Tom_L: you can sorta see the rear one there
10:38 PM Tom_L: it's attached to the Y slide mount so it moves with the table like yours
10:39 PM Tom_L: the drain slot there is the actual cutting limits
10:39 PM Tom_L: in X anyway
10:40 PM Tom_L: Y will go past the table
10:40 PM skunkworks: nice. what is the travel?
10:42 PM Tom_L: 17.75 x 13 x 7
10:42 PM Tom_L: but i extended Z so that may be a bit more
10:42 PM skunkworks: very nice
10:42 PM Tom_L: i wanna get longer slides for Z eventually but just added the risers for now
10:43 PM Tom_L: then taking the vise on and off won't present any problems
10:45 PM skunkworks: 10" x 7-3/8" X 11-5/8"
10:45 PM Tom_L: not bad
10:46 PM Tom_L: helluva lot better than my sherline was
10:46 PM skunkworks: usable
10:48 PM skunkworks: dont know if you saw this.. http://electronicsam.com/images/greenmachine/20180921_205733.jpg
10:48 PM Tom_L: which is z?
10:48 PM skunkworks: xyz
10:48 PM Tom_L: plenty of Z then
10:48 PM Tom_L: no i didn't see that one
10:49 PM skunkworks: that is why i added 5 inches to z :)
10:49 PM Tom_L: heh
10:51 PM Tom_L: you're about ready to make chips on that thing now
10:52 PM Tom_L: have you ever done any thread milling?
10:52 PM Tom_L: i think i wanna try that
10:52 PM Tom_L: got the cam figured out for it the other day
10:52 PM skunkworks: only once with a hand made thread mill
10:52 PM Tom_L: how'd that go?
10:53 PM skunkworks: for 2" threaded rod
10:53 PM Tom_L: not on the mill...
10:53 PM skunkworks: suprisingly good
10:54 PM Tom_L: you do that on the horizontal mill?
10:55 PM skunkworks: yes
10:55 PM skunkworks: http://electronicsam.com/images/house/TrackPress.JPG
10:55 PM skunkworks: for the end caps
10:56 PM Tom_L: ahh yeah i remember that
10:56 PM Tom_L: https://www.ebay.com/str/onlinecarbide?_trksid=p2047675.l2563
10:56 PM Tom_L: been lookin at some of those
10:58 PM Tom_L: my spindle motor isn't big enough for tapping so i figured i'd try milling the threads and see how that worked out
11:00 PM skunkworks: we tested the cutter in oak and it did ok... when we went to do the steel holes we figured out the cutter needed to turn ccw...
11:00 PM Tom_L: heh
11:00 PM skunkworks: so it
11:01 PM skunkworks: cut the threads in oak turning backwards..
11:01 PM Tom_L: you break the cutter or just gauld the back side of it?
11:01 PM Tom_L: or caught it before you went to steel
11:05 PM skunkworks: caught it
11:06 PM Tom_L: oh.. how do you touch off the cutter on one of those?
11:07 PM Tom_L: try to get close to the point or allow for it when you touch off?
11:07 PM Tom_L: otherwise it would be off a few thousandths
11:10 PM skunkworks: idk... i am sure there is a trick to it
11:10 PM Tom_L: maybe add half a thread to the model to allow for that
11:11 PM Tom_L: that would still vary due to the thread pitch
11:38 PM skunkworks: sure