#linuxcnc Logs

Mar 27 2018

#linuxcnc Calendar

12:49 AM IchGucksLive: morning from germany
12:52 AM IchGucksLive: JC: is the 7i77 powerd
12:54 AM IchGucksLive: gloops not here :O
01:01 AM IchGucksLive: off till later
01:11 AM JC: The 7i77 is powered
01:54 AM CaptHindsight: JC: ask again in 4+ hours
01:54 AM XXCoder: yo
01:58 AM JC: Ok, I had a different question that's a bit more general, mind if I try that one?
01:58 AM CaptHindsight: just ask
02:01 AM JC: I've just been trying to do a zig zag ramp to do a couple slots, but linuxcnc follows the ramp to within a couple mm of the end then it jumps down to the level of the next ramp and goes back
02:02 AM JC: So if you imagine the path being short Vs back and forth, it's putting square ends on them, but if I add a section with a constant Z height it goes all the way to the ends
02:04 AM JC: It's all programmed as G1s with a Y and Z move, so I can't figure out why it stops short then jumps down in Z
02:04 AM JC: It's like it's queueing up the next move before this one is finished?
02:07 AM CaptHindsight: I'm taking off but pastebin the g-code and a maybe a pic of whats is happening or not happening
02:10 AM JC: Ok, I did get a ss of the viewer, probably will make it more obvious than my description
02:12 AM Deejay: moin
02:20 AM JC: This is the zig zag code and a pic of the LCNC viewer. https://pastebin.com/raw/3qiUz1Uu https://drive.google.com/file/d/1re9OPIg6zg3CHmkcuQEIiV-DIx3mRyTH/view?usp=sharing
02:37 AM gloops: so its missing the rapid to y 23 z 0?
02:45 AM IchGucksLive: hi
02:45 AM IchGucksLive: gloops: on?
02:45 AM gloops: Ichs yes
02:46 AM IchGucksLive: why the hell dident you go parallell full force on your 8W stepper
02:46 AM gloops: <JC> This is the zig zag code and a pic of the LCNC viewer. https://pastebin.com/raw/3qiUz1Uu https://drive.google.com/file/d/1re9OPIg6zg3CHmkcuQEIiV-DIx3mRyTH/view?usp=sharing
02:46 AM IchGucksLive: i thoought you are the MEN
02:46 AM gloops: it wouldnt work off the other 2 coils Ichs, driver was faulty though
02:47 AM gloops: the dirver was ok until pulling more current
02:47 AM IchGucksLive: why are ther G53 move a mach generator
02:47 AM gloops: JC Ichs might be able to answer your question
02:48 AM IchGucksLive: gloops: even with underpower Amps you got a better performence then on serial
02:51 AM gloops: tbh it is only a spare motor i was just using it to test the axis, ill either get it running on 8 or use another motor
02:51 AM IchGucksLive: JC do you got a DXF you folow or what is this gcode from
02:52 AM gloops: ive found 4 pairs, got it turning on 2 pairs, A+B if i remove B and try another pair, no combination works
02:52 AM IchGucksLive: gloops: get one of this 3.1Nm Nema24 thex pull like crasy
02:52 AM gloops: yeah i probably will
02:52 AM IchGucksLive: there is one left of the 4Nm in the UK
02:53 AM gloops: ive got 2 italian 4.5Nm for X, not fitting them yet though
02:53 AM gloops: one problem after another, i still havent got a working machine!
02:54 AM IchGucksLive: 4.5standard or closed
02:55 AM gloops: standard nema 34, Ever Electronica, i dont know if they are a good make
02:55 AM gloops: they are really solid motors, 20mm shaft at rear
02:57 AM IchGucksLive: JC: your gcode makes a clean swipe every 2mm dept
02:57 AM IchGucksLive: no up move
02:58 AM IchGucksLive: JC: did you get a 1mm step performence
02:58 AM IchGucksLive: as it has a 3IN move behavior this is quite comen
02:59 AM IchGucksLive: then the clenup
03:00 AM IchGucksLive: gloops: as i see in the logs you are not happy to ask THIS is not good
03:00 AM IchGucksLive: thats what the channel is for noone here is perfect
03:01 AM IchGucksLive: im off later
03:07 AM gloops: spindle is working ok, thank .... for that
03:08 AM gloops: simple short in the aviation plug, poor design that is
03:08 AM JC: Sorry I need to watch this window closer...The gcode is from fusion 360, before I added the moves back and forth with a fixed Z it wasn't getting to the ends at all
03:08 AM JC: Confuses me that the moves with a Z ramp don't make it but the same move with fixed Z does?
03:08 AM gloops: and a scary fault, shorting sounds from spindle are enough to make a man get anxious!
03:09 AM gloops: i dont use fusion 360, in fact i dont use linuxcnc haha, as much as im trying to get to that point
03:10 AM JC: That does sound worrying, what size spindle?
03:10 AM gloops: you have got the output in fusion 360 set for emc2?
03:10 AM JC: Yeah
03:10 AM gloops: its only a router spindle - i was just set to click to buy a new one, not so much the cost, its the time that bothers me, another 2 week wait
03:11 AM gloops: anyway it seems ok now i took the aviation plug off and coupled it direct
03:11 AM JC: Yeah I get that, a lot of things are hard to get in Australia besides importing
03:11 AM JC: I do like screwed terminals for higher current stuff.
03:12 AM gloops: Ichs will probably sort your code problems, Tom_L will maybe, archivist hand codes everything, and a few others, its just dropping on them when they are here
03:13 AM JC: Yeah, I'll have to try to catch them later, keep missing them atm
03:13 AM JC: Wondering if it's the Gcode or some oddity with linuxcnc
03:18 AM gloops: i doubt its linuxcnc
03:18 AM gloops: gregcnc_ is also a good one to ask
03:18 AM JC: Would you happen to know if I can pull up the chat history for this?
03:19 AM Loetmichel: !log
03:19 AM Loetmichel: hmmm
03:19 AM JC: !log
03:19 AM gloops: !log
03:19 AM JC: Hehe Nope
03:19 AM gloops: nope
03:19 AM Loetmichel: i think some bots are logging here, but i forgot the command
03:20 AM gloops: its Tom_L s logging, i forget the command now
03:20 AM Loetmichel: same
03:20 AM Loetmichel: i am logging, too, but only on my local disk... no way to get it out
03:21 AM XXCoder: ;log
03:21 AM Loetmichel: and transfering large files over a vnc connection is a bit awkward to say the least
03:22 AM Loetmichel: (at least it got better to type here over the vnc once my employer upgraded from 2mbit SDSL for the whole company to 50Mbit/10Mbit ;)
03:22 AM Loetmichel: fiber
03:22 AM XXCoder: $log
03:22 AM XXCoder: %log
03:22 AM XXCoder: guess not. or maybe bot is down
03:23 AM XXCoder: &log
03:23 AM JC: Yeah that's not much bandwidth for a company
03:23 AM XXCoder: ok im out of common prefixes
03:23 AM gloops: right, touchwood, it seems i got everything working again, need to make a plan to get this moving forward, ive forgot what i was going to do next now..pfff
03:23 AM gloops: its got Toms nick in it im sure
03:24 AM gloops: !log Tom_L
03:26 AM Loetmichel: hmmm, little help please: if i lie to the postprocessor and tell it the mill bit is 1.9mm while it is 2mm in reality the outer contours of the workpiece will get 0,2mm clearance, am i right?
03:27 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=17043&g2_imageViewsIndex=1 <- talking about the red countour
03:27 AM gloops: would say so
03:30 AM JC: 1.9mm would make it cut 0.05mm deeper on each side afaik
03:31 AM XXCoder: Loetmichel: yeah lying to smaller size than actual means double the radius change change in dimensions.
03:31 AM Loetmichel: ah right, so 0.1mm clearance in the "puzzle pieces"
03:32 AM XXCoder: holes bigger, widths lengths external is smaller
03:32 AM XXCoder: that would mean .05mm smaller than actual.
03:32 AM Loetmichel: combined with the other part thats also .05 smaller it should fit... testing now ;)
03:41 AM XXCoder: https://www.thingiverse.com/thing:329596 lol
03:46 AM XXCoder: https://www.youtube.com/watch?v=ynHtaqsvODs interesting
03:53 AM JC: Yes Rose engines can be a little crazy
03:53 AM XXCoder: pretty cool
03:53 AM JC: Reminds me of clockworks
04:10 AM XXCoder: ohhh https://hackaday.io/project/6903-wizyasep
04:11 AM XXCoder: its for led screens but still pretty cool
04:32 AM McBride36 is now known as Guest63698
04:34 AM jthornton: morning
04:34 AM XXCoder: o
04:34 AM JC: Evening
04:46 AM jthornton: damn possum found a way into the chicken run was eating their food
04:47 AM jthornton: glad I saw it before the door opened
04:47 AM XXCoder: would possum try eat chickens?
04:47 AM gloops: not sure what you would do with a possum, we dont have them
04:48 AM Deejay: did you get it? :)
04:48 AM Deejay: *catch
04:48 AM jthornton: yes
04:49 AM jthornton: I shot it
04:49 AM gloops: rats eat the food and will kill any chicks - rarely go for grown birds, they will take old or weak though
04:49 AM Deejay: ah
04:50 AM gloops: fox getting in is a disaster
04:50 AM gloops: thats the main pests we have
04:50 AM jthornton: worst thing is a dog they will kill all the chickens
04:50 AM Deejay: do you have wolves?
04:51 AM gloops: oh yeah a dog, not had any problems with them though, a fox kills everything it can catch, just leaves them dead
04:51 AM jthornton: not this far south we have coyote
04:51 AM Deejay: ah
04:51 AM jthornton: just like a dog then
04:51 AM Deejay: i have a fox on my fields here
04:51 AM gloops: the fox always comes back as well, once theyve found chickens they will be back
04:51 AM Deejay: at least there is a foxhole in the ground
04:52 AM jthornton: I think that once any animal finds a food source it will be back
04:52 AM Deejay: but in germany you cannot go and just shot em ;)
04:52 AM gloops: if its a mother with cubs the set could be miles away
04:53 AM jthornton: I just ordered a tool to fix that opening in the fence yesterday I'll bait the live trap up tonight in case there is more than one
04:57 AM jthornton: I think I woke up the chickens lol
05:03 AM gloops: heh, might be some funny shaped eggs tommorrow
05:04 AM XXCoder: isnt chicken can die by too large a surpise?
05:05 AM jthornton: never heard of that, my neighbor has one that a dog bit it and it's healing... the dog didn't fare so well
05:05 AM XXCoder: guy shot dog?
05:07 AM jthornton: 12 gauge
05:08 AM jthornton: dog had killed a rooster and was running around trying to kill all the chickens
05:08 AM XXCoder: yeah im fine with guy shooting dog
05:11 AM jthornton: damn possum was trying to squeeze through the chain link fence
05:11 AM XXCoder: it had to be done after all
05:11 AM jthornton: I'm sure glad I put that Amcrest camera in the chicken run it has a really good image at night
05:13 AM gloops: thing with dogs, they chase whatever runs, when theyve killed one they just chase the next one
05:14 AM jthornton: I think I figured out why the chicken lights did not come on the other day with the manual switch... I never wrote the code to make it work
05:14 AM gloops: youve got to raise the dog with animals really
05:15 AM jthornton: my neighbor has 2 Great Pyrenees, they are supposed to be good with chickens. every now and then one will chase a chicken but never has bitten on
05:17 AM jthornton: one
05:17 AM gloops: ive not got a dog atm, last one would kill rats, rabbits pheasants - most wild things, but not look at chickens or cats .. well mostly not look at them heh
05:19 AM jthornton: hmm one pullet is standing in front of the door waiting for it to open
05:20 AM jthornton: it's not due to open for 30 minutes
05:30 AM Tom_L: JT-Shop, how do the chickens feel waking up to a gun blast?
05:32 AM jthornton: they got up a bit early todya
05:56 AM charlesh: Morning!
06:02 AM gloops: right, only a quick run up and down, but appears to be all back, homing, spindle xyz, so im back where i was last friday, and thats mainly it for today
06:02 AM jthornton: the stepper drive was bad?
06:02 AM gloops: it was the driver yeah
06:03 AM gloops: thing is it was a complete new rewire, the driver was brand new, i did suspect it but thought it was more likely to be something id missed coupling up or crossed or somed
06:04 AM gloops: something, so i went for the easiest fixes first, and ended up with mostly everything disconnected before i went to the driver lol, time wasted
06:05 AM jthornton: I tend to try and divide things up until I find the problem
06:06 AM gloops: i should have tested the driver output first, would have put me in that direction, but with a thousand wires just all wired, i went on a wild goose choose with those, as it happens i got it all right first time, just a bad driver, hard luck
06:13 AM gloops: alls i want to do is get to the stage where i can do some cutting with the 2 motor axis, and see how that goes, see if it can perform without missing steps etc, if thats ok ill consider the thing a success
06:14 AM JC: Are you converting a manual mill?
06:14 AM gloops: no, new build, router
06:16 AM JC: For timber?
06:18 AM gloops: yeah, about 1100x900 cutting, i made a gantry with 2 screws and motors, running from linuxcnc 2.8, unknown how good that is - well i know it works for testing purposes, mine is homing and jogging fine, i want to know how it goes on a real cut over a lot of moves and time
06:18 AM JC: Are you using a dedicated interface board or parallel?
06:18 AM gloops: parport
06:20 AM JC: What sort of jog speed do you get with that?
06:21 AM gloops: about 170 ipm for the x - mainly due to weight and underpowered, ive got some stronger motors to fit at a later time
06:22 AM gloops: you can get 600 ipm on parport, ive had it
06:22 AM JC: That's not too bad
06:22 AM JC: Do they still get smooth pulses at that speed?
06:23 AM gloops: last one i made seemed ok yeah, i didnt cut with it at that speed though
06:24 AM JC: Nice to have the rapids though when your moving around in a 1m3
06:24 AM JC: or a 1m2 at least
06:25 AM gloops: was aiming for about 200 ipm with this, for cutting sheets, a lot of my work will be pine though, finishing pass is only 12 ipm i wont use the speed much
06:25 AM JC: Isn't 12 very slow for a router?
06:26 AM gloops: yes very slow, but if you want a good finish with pine it has to be
06:26 AM JC: Can't just use a bigger radius tool or some such?
06:26 AM JC: I don't do much with timber
06:26 AM gloops: not really for fine carving details, you can rough out faster
06:27 AM jthornton: I didn't have a clue about cutting speed when I v carved the harley emblem so I cut it at 5 IPM
06:27 AM jthornton: in pine
06:27 AM JC: Does pine ever rub and not cut?
06:28 AM gloops: i was way too fast with pine when i first tried, i thought 60 ipm was slow, doesnt make a good finish
06:28 AM gloops: saw someone on facebook who was making perfect signs with pine 12ipm, 12000rpm, it works perfect, you dont need any sanding
06:28 AM jthornton: the emblem came out nice
06:29 AM gloops: JC it burns easy
06:29 AM jthornton: I'm limited to 3600 rpm on the mill
06:29 AM JC: Ahh ok
06:29 AM JC: I have the same problem on my mill, it's about 3k rpm as well
06:30 AM JC: Makes fine stuff slow
06:30 AM jthornton: running 3600 rpm when it gets to M5 the vfd trips out
06:30 AM gloops: you seem them ripping sheets up at crazy speeds, thats mainly particle boards and mainly profile cutting, you can plough through mdf fast, its different when you need to preserve details and get a finish
06:31 AM JC: Are hardwoods better?
06:48 AM charlesh: Anybody running marathon motors for spindles? Looking at a micromax or blackmax
06:54 AM jthornton: marathon motors are good, I've used them on many things
06:54 AM charlesh_: i've used a couple of their single phase motors and haven't had any issues. Looking to put it on a hitachi vfd
07:02 AM JC: Still can't figure out why llinuxcnc is cutting the corners off my zig zag ramp.
07:02 AM skunkworks: check out G64..
07:02 AM jthornton: you didn't tell it not to
07:02 AM jthornton: G64 P some tolerance
07:02 AM JC: You're saying it's interpolating it into the next path?
07:03 AM skunkworks: blending - yes
07:03 AM JC: What controls the degree of blending that it does?
07:03 AM jthornton: http://linuxcnc.org/docs/2.7/html/user/user-concepts.html
07:03 AM jthornton: http://linuxcnc.org/docs/2.7/html/gcode/g-code.html#gcode:g64
07:04 AM jthornton: G64 - without P means to keep the best speed possible, no matter how far away from the programmed point you end up.
07:04 AM JC: I remember my old dynapath had something like that, but I'd never seen to blend to the degree this one is
07:05 AM JC: So if g64 without p is set, it still blend the minimum it needs to in order for acceleration settings to get it round at feedrate?
07:09 AM JC: Thanks for that, I'd say that is the problem
07:26 AM gregcnc_: if accel is slow you see more rounding, as you reduce the tolerance, you'll see the machine slow at corners
07:31 AM JC: Ok, would it be reasonable to add something like G64 P0.05 as part of the boilerplate gcode?
07:49 AM jthornton: yes a good preamble is important
07:50 AM jthornton: http://gnipsel.com/linuxcnc/g-code/gen01.html
08:05 AM Jymmm: We the people...
08:07 AM charlesh_: ha, nice one.
08:16 AM Deejay: re
08:17 AM Loetmichel: *HEYHOO* First try and the puzzle noses on the back side clicked in like a charm (had to redo it though because button position wrong) -> http://www.cyrom.org/palbum/main.php?g2_itemId=17046&g2_imageViewsIndex=1
08:18 AM Loetmichel: XXCoder: note!
08:18 AM Loetmichel: :-)
08:18 AM gloops: my rotavator lives
08:18 AM pink_vampire: look vary nice
08:19 AM gloops: early 70s howard, those old engines werent so reliable but it was most often an easy fix
08:20 AM JC: That's a neat looking back on that enclosure
08:21 AM gloops: very good Loet
08:37 AM JT-Shop: Loetmichel: nice
08:38 AM Loetmichel: JT-Shop: it was a bit challenging to get it right with the 8 bends involved... i am a bit surprised myself that it worked on first try ;)
08:39 AM Loetmichel: remember: i do all my "cad" still in coreldraw 8 in 2d
08:39 AM gregcnc_: how often does bending fail using that method?
08:40 AM Loetmichel: :-)
08:40 AM Loetmichel: gregcnc_: BENDING never fails
08:40 AM Loetmichel: getting the drill/trhead postions right across bends is another thing though ;)
08:40 AM gregcnc_: bending allowance
08:42 AM Loetmichel: exactly. and doing that right the first time across multiple bends AND in 2d (so all ehte calculations in my head instead of letting the cad do it).
08:42 AM gregcnc_: i understand
08:57 AM pink_vampire: Loetmichel: what kind of tool is used for measuring RF noise?
08:58 AM Jymmm: pink_vampire: An $80,000 USD Spectrum analyzer =)
08:58 AM pink_vampire: my AM radio get it very easy
08:59 AM pink_vampire: is there something cheaper?
08:59 AM Loetmichel: pink_vampire our two measurement chambers have tech in them for about a million $ in sum
08:59 AM ktc: a cheap sdr can scan the spectrum
08:59 AM Loetmichel: its a Rhode&schwarz spectrum analyzer with fitting antennas inside the chamber that can do DC to 22ghz
09:02 AM pink_vampire: I want to make a mini enclosure for the servo drivers and mount them on the back of the motor. and also to remove the noise from the VFD
09:04 AM pink_vampire: those look "affordable" https://jretest.com/product-category/test-equipment/
09:05 AM ktc: check rtl-sdr and the hackrf
09:05 AM Loetmichel: no idea. i just have to build the stuff. measuring is bosses job or for our measurement engineer.
09:08 AM pink_vampire: I think I have somewhere the rtl-sdr
09:09 AM pink_vampire: do you think it can be used as spectrum analyzer?
09:09 AM gloops: anyone used this type of motor/gearbox - any good? https://www.ebay.co.uk/itm/47-1-Planetary-Gearbox-Nema-23-Stepper-Motor-2-8A-for-DIY-CNC-Mill-Lathe-Router/121683241480?
09:09 AM pink_vampire: good for?
09:09 AM gloops: backlash promised 1.5 <= degrees
09:09 AM pink_vampire: WOW
09:09 AM gloops: good for nothing with that much backlash
09:10 AM ktc: it is a wide band reciver control by computer software swipt the whole band
09:10 AM gloops: i can get one cheap but dont think ill bother, better gearing down with belt
09:11 AM pink_vampire: I want to see where the noise is radiated, if is the motor / brushes / wires?
09:11 AM pink_vampire: gloops: for 4th Axis for soft materials you can preload it with a spring
09:12 AM gloops: i suppose yeah, or a weight on a cable maybe
09:12 AM pink_vampire: the best way is to go with harmonic drive
09:13 AM gloops: small budget
09:13 AM ktc: Only one motor? add noise blocker to all ingoing and outgoing wire
09:13 AM pink_vampire: https://www.ebay.com/itm/HARMONIC-DRIVE-SYSTEMS-Reducer-CSF-11-30-1U-CC-SP-w-SANYO-Motor-103H5331-03HEJ5/222661446786?hash=item33d7a80c82:g:2LwAAOSw3KpZz1N-
09:14 AM ktc: Used harmonic drive from Japan robots 100/50:1 is at taobao.com
09:14 AM pink_vampire: ktc: I have 4 DC servos that work with the G320X drivers. and they noisy as f*ck
09:18 AM ktc: pink_vampire: there is noise supressor (coils and capacitor) add to the wires close the cabinet for the circuit board will kill noise
09:27 AM pink_vampire: ktc: how do I calculate the coils and the capacitor?
09:34 AM ktc: pink_vampire: just buy prebuild supressor, just specify the current carried. It is a box like thing
09:36 AM ktc: pink_vampire: http://hotkilns.com/noise
09:46 AM Guest63698 is now known as McBride36
09:46 AM McBride36 is now known as Guest71716
09:51 AM Guest71716 is now known as McBird
10:03 AM charlesh_: now for another butt whooping today, can't seem to get outputs to work in the 7i37
10:03 AM charlesh_: i've set what I feel to be right with the following
10:03 AM charlesh_: setp hm2_4i69.0.gpio.071.is_output true
10:04 AM charlesh_: net coolant-mist hm2_4i69.0.gpio.071.out
10:05 AM charlesh_: common of power supply into out7+, 24v+ to relay, out7- to other side of relay
10:08 AM charlesh_: have 5 volts to the card at p1
10:09 AM charlesh_: this is on p4, the connector i've designated for sserial, but no sserial device connected
10:09 AM charlesh_: was trying to test the theory of them working as normal gpio
11:01 AM Loetmichel: *muhaha* just a while ago our measurement engineer came by:"why is there a shopvac in the trash?" $me:"because its brushes are worn, new one was cheaper than new brushes" Him:"Brushes?" me:"joerg, you are a DiplIng. You dont know what brushes are?" "yes, but i am M.Sc in astrophysics, not EE, and no, i dont know what brushes are." $me explained DC motors, brushes and stuff. "and three phase
11:01 AM Loetmichel: motors have none." him:"why is that?" $me: *sigh* ...explained Three-phase power and squirrelcage and synchronus motors... nice way to waste an hour... at least the apprentice listened interested as well ;)
11:02 AM pink_vampire: OMG!!!
11:07 AM gregcnc_: omg what?
11:08 AM SpeedEvil: Organic squirrelcage motors run on peanuts.
11:08 AM gregcnc_: they like walnuts around here
11:09 AM Loetmichel: SpeedEvil: the apprentice was listening. i am not evil enough to teach such things on poutpose
11:09 AM Loetmichel: -t+r
11:09 AM pink_vampire: SpeedEvil: LOL kill me
11:09 AM gregcnc_: i think it's odd when people don't know, that people don't know things
11:11 AM Loetmichel: gregcnc_: the guy is our EMI measurement engineer.
11:11 AM gregcnc_: so?
11:11 AM Loetmichel: and its only normal to assume that "things you knew sinche childhood" are known by everyone.
11:11 AM gregcnc_: some people learn what they need or are interested in and nothing more
11:12 AM pink_vampire: EMI measurement engineer - and not familiar with how DC motors works OMG!!
11:12 AM Loetmichel: gregcnc_: an engineer thats working with EMI should know the basics about Power electrics as well
11:13 AM gregcnc_: there are people on earth that don't understand sex can result in pregnancy
11:13 AM Loetmichel: especially when he sees the result of badly filtered brished motors all day when he measures a laser printer
11:13 AM gregcnc_: who hired the guy then?
11:13 AM pink_vampire: I guess he consider DC motor to be just noise making box that need to be removed from the system
11:13 AM Loetmichel: Boss
11:14 AM gregcnc_: exactly that's all he needs to know
11:14 AM Loetmichel: pink_vampire: about that, yes ;)
11:14 AM gregcnc_: he doesn't design motors and it' not his job to spec the mtoor
11:16 AM pink_vampire: hey boss, there is a metal cylinder thing...
11:16 AM Loetmichel: ... thats making way to much noise. can we remove that?
11:17 AM Loetmichel: :-)
11:17 AM Loetmichel: ... at least it clicked finally why those pesky motors in the printers are always so loud.
11:18 AM Loetmichel: "ah, so the brushes slide on the commutator... isnt that making sparks (and hence wideband EMI) like crazy?"
11:18 AM Loetmichel: ... so he learned something today ;)
11:19 AM Loetmichel: he has seen me filter DC motors. now he knows why they are loud ;)
11:19 AM Loetmichel: "loud"
11:20 AM gregcnc_: we made brush motors at the age of 8, he didn't and didn't bother investigating even when presented with an issue, no shortage of people like that
11:20 AM pink_vampire: we joke about DC motors to be super noisy, but the VFD for the 3phase motor is much worse
11:20 AM gregcnc_: tht's a given
11:21 AM Loetmichel: pink_vampire: only if not filtered properly
11:22 AM Loetmichel: at least the VFD has only square wave PWM and no sparks
11:22 AM Loetmichel: its a bit less "wideband"
11:23 AM pink_vampire: i'm trying to think where is my sdr dongle
11:24 AM gregcnc_: pink why do you have 4m of cable on those servos again?
11:24 AM pink_vampire: can you see better way to make it shorter?
11:24 AM Loetmichel: gregcnc_: rpoblem with being a "knowitall" is that after a while people think you DO know it ALL... and come asking the strangest questions... SO far i always had an answer, but i know one day my streak will end ;)
11:25 AM gregcnc_: lol yeah
11:25 AM gregcnc_: why are they so long?
11:25 AM pink_vampire: the machine on the left, the cabinet on the right
11:26 AM gregcnc_: of the room?
11:31 AM pink_vampire: cool!
11:32 AM pink_vampire: i found the sdr!!
11:32 AM IchGucksLive: hi
11:32 AM pink_vampire: gregcnc_: let me find a picture
12:28 PM skunkworks: Loetmichel: same here.. I get asked the strangest questions
12:28 PM skunkworks: ask sam - he knows...
12:36 PM fragalot: hi
12:36 PM IchGucksLive: ;-)
12:40 PM gloops: are these any good Ichs https://www.ebay.co.uk/itm/Nema-17-Stepper-Geared-Motor-100-1-Planetary-Gearbox-High-Torque-1-68A-CNC-Robot/122598479318?
12:40 PM gloops: 1.5 degrees backlash? lol
12:44 PM miss0r: hello
12:44 PM miss0r: I'm at the difinitive task of filling the boltholes in the linear rails with epoxy...
12:45 PM fragalot: miss0r: why not pop in the cheap plastic plugs they make specifically for that exact task?
12:45 PM miss0r: They don't actualy make any for this model.
12:45 PM miss0r: its 3mm bolts
12:45 PM fragalot: Odd.
12:46 PM miss0r: I've asked around, and theres not enough room for any of the regular ones
12:46 PM fragalot: in that case, have fun! and hope you aren't the one that's going to have to take it apart :P
12:46 PM miss0r: easy. NOONE is going to take this apart :D
12:46 PM miss0r: well, I filled the allen head with wax before starting, so you have a fighting chance, just in case
12:47 PM fragalot: :-)
12:51 PM CaptHindsight: https://venturebeat.com/2018/03/27/opentrons-raises-10-million-for-scientists-to-automate-lab-experiments-with-robotics/ *duino powered Cartesian bot (mostly t-slot)
12:52 PM CaptHindsight: "a new visual design program called Protocol Designer, which basically allows anyone to create their own protocols to run on the OT-2 without having to write any code"
12:52 PM gregcnc_: the workding is fun 70% of the top 10 companies
12:52 PM CaptHindsight: no LCNC, no Freecad
12:53 PM CaptHindsight: which would do it all and more
12:53 PM gloops: this will be as easy as plumbing soon
12:53 PM gloops: push-fit
12:54 PM gloops: in the future there wont be any shops, youll text a cnc, it will make what you want, send photo or drawing, pick it up later
12:55 PM gregcnc_: in the future we'll all be plugged into the network, nothing real will be necessary
12:55 PM gloops: yes that as well
12:56 PM gloops: but something will have to make the virtual world generators
12:56 PM CaptHindsight: nah, no network could handle it, unless it filtered out 99.99% of the crap
12:57 PM gregcnc_: but people want the crap
12:57 PM gloops: crap is subjective
12:57 PM CaptHindsight: no network required for that
12:58 PM CaptHindsight: no new network
12:58 PM gloops: if you want printing done now you barely interact with anyone, you can post the design online, its made, you receive it the next day
12:59 PM gloops: that will happen with 3d no doubt at all
12:59 PM IchGucksLive: Gn8
01:03 PM CaptHindsight: I can order a pizza on my phone and have it delivered to someone in 30 minutes
01:03 PM gregcnc_: do you have the pizza icon?
01:04 PM CaptHindsight: and if the pozza is wrong they will take it back and throw it out
01:04 PM gloops: nah theyll sell it
01:04 PM CaptHindsight: not helping the poor one bit
01:04 PM CaptHindsight: no lives saved
01:05 PM CaptHindsight: gregcnc_: I think we have Dominoes :)
01:06 PM Tom_L: are we having fun yet??
01:06 PM Tom_L: gloops, back in business?
01:07 PM CaptHindsight: Tom_L: what pizza do you have?
01:07 PM Tom_L: all sorts
01:07 PM gloops: supposing i have a vintage car, i snap the gudgeon pin, none have been manufactured for 30 years, all i have to do is text the measurements to CNCario and a drone will place a newly machined one at the side of the car within the hour
01:07 PM Tom_L: not as many as we used to
01:07 PM gregcnc_: Last time we got Amore it was so so.
01:07 PM Tom_L: papa johns, pizza hut, knollas, costco, big cheese, ......
01:07 PM CaptHindsight: gregcnc_: we stop by there for slices
01:08 PM gregcnc_: you vintage car will be illegal to drive so what's the point?
01:08 PM Tom_L: dunno if godfathers is still here or not
01:08 PM gloops: Tom_L yeah the spindle short was in the aviation plug, thankfully, im all moving and spindle running again
01:08 PM CaptHindsight: I'd like to drive a pizza on the new everyones connected internet
01:08 PM gregcnc_: Mugs has the most giant slices I've seen
01:09 PM CaptHindsight: since it's all virtual, virtually anything should be possible
01:09 PM CaptHindsight: gregcnc_: haven't tried there yet
01:10 PM gloops: when will 3d food printers arrive?
01:10 PM CaptHindsight: Tom_L: I recognize most of those names
01:10 PM CaptHindsight: Tom_L: is Knollas a chain?
01:10 PM gregcnc_: I think they did, aren't they in walmart yet?
01:11 PM gloops: not seen them
01:11 PM gregcnc_: http://www.pancakebot.com/
01:11 PM Tom_L: i dunno, there are 2 or 3 here
01:11 PM gloops: it would be more creative, you could print a turkey with 8 legs
01:12 PM gregcnc_: http://chocedge.com/
01:12 PM CaptHindsight: mobile pizza bot
01:12 PM Tom_L: drone delivery
01:12 PM CaptHindsight: makes the pizza while flying to your door
01:12 PM gregcnc_: pfft autodrives to you house wile it's cooking in the back
01:12 PM Tom_L: they just moved the original 1st pizza hut here
01:13 PM Tom_L: put it on the college campus in a different spot
01:13 PM CaptHindsight: is that where it started?
01:13 PM Tom_L: yes
01:13 PM gloops: hey the choc printer is a good idea, youd make some cash with one of those
01:13 PM CaptHindsight: what year?
01:13 PM gloops: hmmm
01:13 PM Tom_L: i'm supposed to know this?
01:13 PM gregcnc_: hometown trivia?
01:13 PM CaptHindsight: sure, it's useless info day
01:14 PM CaptHindsight: founded in 1958 by Dan and Frank Carney
01:14 PM Tom_L: i knew that
01:14 PM gregcnc_: http://www.letspizza.it/index-en.html + app + self driving uber car = profit
01:15 PM gloops: PeppeROBI
01:16 PM CaptHindsight: Uber Eats and Grub Hub give the restaurants a cell phone to accept orders (tablet sized)
01:17 PM CaptHindsight: haven't played with that app on the restaurant side yet
01:17 PM gloops: i might definately look into chocolate printing, these conversations are useful
01:18 PM CaptHindsight: corn starch moulds
01:18 PM gloops: you would probably need a food certificate or something to sell those products
01:18 PM Tom_L: 3d print chocolate bunnies
01:19 PM gloops: personalised, with the kids names that kind of stuff
01:19 PM CaptHindsight: I felt chated as a child when the choco bunnies ended up being hollow
01:19 PM CaptHindsight: cheated even
01:19 PM Tom_L: they were solid, somebody at the inside
01:19 PM Tom_L: ate
01:20 PM CaptHindsight: lucky me
01:23 PM CaptHindsight: so LCNC gets passed up again on another motion control gimmick
01:24 PM gregcnc_: customers like easy, and builders like proprietary
01:24 PM CaptHindsight: supposedly open gimmick
01:24 PM gloops: barring disasters i should be cutting by the weekend, got some work to do elsewhere but the next day i get i should be done
01:24 PM gregcnc_: oh
01:25 PM CaptHindsight: Opentrons
01:25 PM gregcnc_: seems that centroid hobby system is picking up steam
01:25 PM CaptHindsight: https://vimeo.com/260833720
01:26 PM gloops: i see centroid mentioned a bit on facebook, and acorn
01:26 PM gregcnc_: acorn is centroid
01:26 PM gloops: yes
01:26 PM CaptHindsight: gregcnc_: have a link?
01:27 PM gregcnc_: http://www.centroidcnc.com/centroid_diy/acorn_cnc_controller.html
01:28 PM Tom_L: would a dc servo with a gecko driver from automation make a decent spindle drive?
01:28 PM CaptHindsight: Tom_L: maybe not the bearings
01:28 PM Tom_L: i'm mostly ignorant when it comes to servos
01:29 PM Tom_L: i'll run it from a belt
01:29 PM gregcnc_: I think you want tighter control over the servo
01:29 PM CaptHindsight: yeah, that should do it
01:29 PM CaptHindsight: for threading?
01:29 PM Tom_L: well that would be a plus
01:30 PM gregcnc_: right threading
01:30 PM gregcnc_: tapping
01:30 PM Tom_L: i've got it wired for that and my post supports it
01:30 PM gregcnc_: allowable error is something like 128 encoder counts min, 1024 max
01:30 PM gregcnc_: for fault
01:30 PM Tom_L: but the sherline motor is too small to do anything useful for threads
01:30 PM fragalot: or a very loose Z
01:31 PM gregcnc_: or compensation tap collet
01:31 PM Tom_L: that's not the primary goal
01:33 PM gregcnc_: what is?
01:35 PM Tom_L: higher feeds
01:35 PM Tom_L: to support what i think the mill can do
01:35 PM Tom_L: right now the spindle is the bottleneck
01:36 PM gregcnc_: did you find a motor?
01:38 PM CaptHindsight: winder10 PC over ethernet to an arm cortex a8 huh
01:41 PM Tom_L: no not yet
01:41 PM CaptHindsight: anyone ever run the Centroid software?
01:42 PM gloops: i was looking at spindles on ebay, the cheapo hy ones on ebay - spindle+vfd £150 , spindle on its own £130
01:43 PM gregcnc_: they are going to kill Mach, lots of Acorn on YT
01:44 PM CaptHindsight: machine builders that use Centroid http://www.centroidcnc.com/buy_machine.htm
01:44 PM CaptHindsight: that is surprising
01:44 PM gloops: see UNCNC is it? quite a bit too
01:46 PM CaptHindsight: 5 axis http://www.centroidcnc.com/cnc_porting_machine.html
01:46 PM gregcnc_: i'm guessing the market for small machine builders and retrofits is shrinking fast
01:46 PM Rab: Looks like the Acorn is built around some kind of BeagleBone?
01:46 PM CaptHindsight: with its unique and patented technology
01:46 PM CaptHindsight: Rab: yes
01:49 PM CaptHindsight: is the main attraction easy setup and config?
01:49 PM gregcnc_: seems many people think you need to know a lot about linux to setup linuxcnc
01:50 PM roycroft: well, one needs to be able to find the power switch and cdrom drive/usb port
01:51 PM CaptHindsight: challenging for many
01:51 PM Rab: Doesn't even come into play if a vendor sells you a preconfigured platform, e.g.: http://www.centroidcnc.com/centroid_diy/cnc_components.html
01:51 PM roycroft: remove your coffee cup from that tray and put this cd on it instead
01:51 PM gregcnc_: i think when people hear about testing pc for jitter and the solutions they freak out.
01:52 PM gloops: looking back, stepconfig looked difficult when i first looked at it, but that was because i didnt know ANYTHING about cnc, it wasnt linux or stepconfig that was mysterious
01:52 PM gregcnc_: not enough emphasis on what a mesa or similar does for you
01:52 PM gloops: when i look now, i dont see how it can be made any easier, what can be left out or made simpler?
01:53 PM roycroft: i don't get why folks are so intimidated by *nix and thinkg it's so difficult, yet manage to muddle through life using windows, when windows is far more difficult to deal with than *nix
01:53 PM gregcnc_: people being people
01:53 PM CaptHindsight: did that JC guy ever find out what his problem was?
01:53 PM gloops: mach3 config is harder
01:54 PM gloops: JC yes G64
01:55 PM gregcnc_: https://www.ebay.com/itm/162956676391
01:55 PM CaptHindsight: I see in the log now
01:55 PM gregcnc_: how long you been trying to sell that for, oh since 2013
01:56 PM CaptHindsight: not bad for the price
01:57 PM CaptHindsight: is it listed in childrens pajamas?
01:57 PM gregcnc_: Baldor is now ABB?
01:57 PM gregcnc_: it's .87kW not 87
01:58 PM Rab: What a ripoff! Totally not buying that, then.
01:59 PM Rab: I was all ready to source a connecting cable the diameter of the motor.
02:02 PM gregcnc_: That motor is big for the rating
02:03 PM CaptHindsight: 87KW needs 2m dia heatsink
02:04 PM XXCoder: Loetmichel: looks nice!
02:05 PM Loetmichel: and it fitted first try
02:05 PM Loetmichel: (at least the "puzzle part", the buttons were half a diameter off in both x and y... math isnt my strong side sometimes ;)
02:09 PM CaptHindsight: see not useless http://www.3ders.org/articles/20180327-pokemon-lovers-make-this-3d-printed-cubone-mask-for-your-dog.html
02:09 PM gregcnc_: Tom_L This drives the spindle in my Emco mill. Rated .66kW, 1.2Nm I'd have to check what the ratio is, but spindle goes to 5k
02:09 PM gregcnc_: https://www.ebay.com/itm/182978627816
02:13 PM gloops: https://www.ebay.co.uk/itm/Control-Techniques-Matador-Servo-Motor-with-Brake/173232880107?
02:14 PM Tom_L: they cut the friggin cables!
02:15 PM CaptHindsight: http://www.3ders.org/articles/20180322-ar2-3d-printable-6-axis-robot-for-under-2500-hits-kickstarter.html
02:15 PM CaptHindsight: http://www.3ders.org/images2018/ar2-3d-printable-6-axis-robot-under-2500-hits-kickstarter-2.jpg
02:15 PM gloops: probably ripped off something going for scrap
02:15 PM CaptHindsight: they don't hire engineers to strip factories
02:16 PM CaptHindsight: I'm surprised it doesn't have marks from an axe
02:18 PM CaptHindsight: the robot uses geared stepper motors and a *duino
02:19 PM gregcnc_: so he's basically selling the frame parts?
02:35 PM CaptHindsight: 6 axis robot kinematics Part 1 https://www.youtube.com/watch?v=FIx6olybAeQ&feature=youtu.be
02:35 PM CaptHindsight: he did a 3 part series on the kinematics
02:36 PM CaptHindsight: but still uses windows
02:36 PM CaptHindsight: sorry 8 part series
02:38 PM CaptHindsight: all in Python
02:38 PM CaptHindsight: the source not the videos :)
02:40 PM CaptHindsight: only 6800 lines
02:46 PM CaptHindsight: https://raw.githubusercontent.com/Chris-Annin/AR2/master/Schematic.jpg
02:46 PM gloops: “Mad” Mike Hughes built a rocket in his garage for months. It’s all part of his mission to see if the Earth is flat or shaped like a frisbee. Full story: https://bit.ly/2usTH0q
02:47 PM gloops: probably easier ways to test that..
02:49 PM CaptHindsight: he's no quitter
02:51 PM gloops: well yeah, and after all, it isnt about the winning its the taking part
02:53 PM gloops: the motor didnt run very long
02:54 PM SpeedEvil: https://twitter.com/Peter_J_Beck/status/978431231627898880
02:55 PM SpeedEvil: On small rockets that can actually make it to orbit.
02:56 PM gloops: it cant be difficult
02:57 PM gloops: i bet a lot of people would make their own rockets, if it wasnt for the fact that there is really no good reason to do so
02:58 PM SpeedEvil: Other than to dramatically reduce space launch costs.
02:59 PM SpeedEvil: Musks planned 2022 Mars rocket is aimed at eventually costing $10/kg to orbit.
02:59 PM roycroft: it's still very expensive and extremely dangerous
02:59 PM gloops: thats cheaper than royal mail lol
02:59 PM roycroft: and as one reduces the danger factor the expense goes up dramatically
03:00 PM roycroft: i'm not ready to ride billy bob's space taxi service
03:00 PM SpeedEvil: That's not quite true.
03:00 PM SpeedEvil: It can be true if you employ Boeing to make your rocket.
03:01 PM SpeedEvil: This is how you get a launch being $1B.
03:06 PM DaViruz: some of rocketlabs claims seems a bit.. dubious
03:07 PM XXCoder: gloops: there IS rocket hobbyists
03:07 PM XXCoder: they build larger rockets than small rocket hobbyists
03:08 PM CaptHindsight: Russian rockets
03:09 PM gloops: XXCoder yeah i have seen some impressive home made rockets, i suppose the more serious you get about the more houses you have to own to sell
03:10 PM XXCoder: yeah, thats the state of things usually. you'd have to be Jay Leno to own so many rare and classic cars
03:10 PM XXCoder: including one of tuckers, and few unique cars and motorcycles
03:10 PM lunadabay: hi
03:11 PM lunadabay: has anyone noticed issues with very large (250k line) programs being ran on linuxcnc?
03:11 PM roycroft: it's all moot as far as i'm concerned anyway
03:12 PM roycroft: i don't like leaving my timezone these days, much less the planet's atmosphere
03:12 PM CaptHindsight: lunadabay: running out of memory?
03:12 PM Loetmichel: lunadabay: ma largest one so far is about 200k
03:13 PM roycroft: although i could go into space and remain in my time zone, if i were to go straight up to a geosynchronous orbit altitude
03:13 PM Loetmichel: didnt notice any problems
03:13 PM lunadabay: i was making a mold with a small ball endmill so i had a tiny stepover, and the program seemed to miss some corners and whatnot
03:13 PM lunadabay: i'm guessing it's an issue with rhinocam but figured i'd ask here first
03:14 PM lunadabay: i ran each operation as a seperate program and it cut fine, but as a complete program, it was pretty messed up
03:16 PM roycroft: i would suspect your cam software, but the best thing to do would be to generate the omnibus file and the individual files, and compare the gcode
03:17 PM lunadabay: yea if it wasn't 250k lines i would have compared it already... gotta find a program to do a side by side
03:17 PM roycroft: all you need to do is compare the section that is failing
03:17 PM roycroft: well
03:17 PM roycroft: perhaps that's all you need to do
03:17 PM roycroft: if that part differs substantially then it's likely the cam software
03:17 PM roycroft: if it's substantially the same you have more work to do
03:20 PM lunadabay: here it is after the roughing pass https://imagebin.ca/v/3wM2WmvSEzrL
03:21 PM lunadabay: and after the supposedly the same toolpath https://imagebin.ca/v/3wM2h5iwDOoR
03:21 PM lunadabay: second one is what it's supposed to be
03:22 PM lunadabay: i'll do some comparing, i was just curious if anyone has seen this happen before. it's weird, the toolpath displayed in rhinocam looks exactly the same between the two, but the machined part looks different.
03:23 PM gregcnc_: if running axis how to the backplots compare?
03:23 PM lunadabay: ah good question i'll look
03:58 PM CaptHindsight: what is going rate for extended service plans on CNC machines?
04:00 PM CaptHindsight: Haas extended warranties ranges from $1,695 for base-model mills to $8,795 for more complex units
04:00 PM CaptHindsight: Hurco warranties range from $4,995 to $8,995.
04:01 PM CaptHindsight: The Tormach warranty covers only electrical components. “We don’t offer a warranty on mechanical things because they can wear out through normal use,”
04:03 PM gregcnc_: wow I didn't know that about tormach?
04:04 PM CaptHindsight: https://www.ctemag.com/news/articles/machine-technology-extend-or-not-extend
04:17 PM gloops: what do people use those scooter motors for? spindles? or steppers
04:18 PM Tom_L: what voltage are they?
04:18 PM Tom_L: 24? 48?
04:18 PM Tom_L: 5000?
04:18 PM gloops: not sure, i just remember people saying they used them, forgot how now
04:19 PM gloops: theyll be 12 or 24 volt i guess, run off battery
04:21 PM gloops: http://www.pccmotor.com/24vo28elscra.html
04:22 PM gloops: theyre not them
04:24 PM gloops: https://greenmotortech.en.alibaba.com/product/2006894094-800185521/24v_dc_transaxle_motor_kit_for_electric_mobility_scooter_and_wheelchair.html
04:28 PM Tom_L: https://www.aliexpress.com/item/MY1020-1000W-48V-36V-UNITEMOTOR-High-Speed-Brush-DC-Motor-Electric-Bicycle-Motor-E-Scooter-Motor/32830925400.html
04:32 PM gloops: so 1kw spindle
04:32 PM gloops: would be ok for router
04:36 PM Tom_L: what i've got works so i'm in no hurry. just looking for a good deal
04:36 PM Deejay: gn8
04:40 PM Tom_L: so what do we discuss now that gloops has his junk figured out?
04:42 PM roycroft: not his junk, please
04:42 PM roycroft: this is a family channel
04:42 PM roycroft: there may be young chikens present
04:42 PM gloops: i dont think they do use them for spindles, but i cant see how they get steppers from those
04:43 PM gloops: unless there are some other type of scooter motors
04:53 PM gloops: hmm, they turn them into dc servos https://hackaday.com/2008/07/16/turn-any-motor-into-a-servo-with-repraps-new-board/
04:56 PM Tom_L: im gonna check the local treadmill supply one of these days
04:57 PM gloops: wow thats not bad, old scrap scooter than some of those $20 boards, 4 x 1kw servos!
04:57 PM gloops: absolute position
04:57 PM Tom_L: the supply may be the issue
04:57 PM gloops: power supply?
04:57 PM Tom_L: yeah
04:58 PM gloops: well you just gotta remember to charge the batteries every night lol
04:59 PM gloops: 24 v, but 50 amp
05:01 PM Tom_L: i'll just go hydraulic and power it with a briggs :)
05:02 PM Loetmichel: Tom_L: the idea isnt that bad acutally...
05:02 PM Tom_L: alot of extra parts
05:02 PM gloops: plenty of motors knocking about, i see mill spindles come up on ebay but always popular
05:02 PM Tom_L: and no real way to control position
05:02 PM Loetmichel: i once made a "powerpack" out of an old brushless motor, a rectifier and a 0.99ccm glow engine.
05:03 PM JT-Shop: Briggs in Rolla had a 3 engine drag bike that used hydraulic pumps... pretty cool looking
05:03 PM Loetmichel: worked well enough for ~100W continous into the batteries of the quadcopter. IN FLIGHT ;)
05:04 PM gloops: https://www.ebay.co.uk/itm/Samlex-SEC-2450BRM-24V-50AMP-C-W-Battery-Backup-Rackmount-AC-DC-Power-Supply/272425970749?
05:05 PM * Tom_L waits for the chicken egg report tomorrow morning
05:05 PM gloops: chinese will do one for $30
05:05 PM Tom_L: they had a rather upsetting morning this morning
05:07 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/misc_stuff/12v_supply3.jpg
05:07 PM Tom_L: i could use that for something
05:07 PM gloops: that would do it yeah
05:07 PM Tom_L: RV charger
05:07 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/misc_stuff/12v_supply2.jpg
05:09 PM Tom_L: might not like the emf from the motor
05:10 PM gloops: well it was just a thought, somebody from india was doing it on facebook
05:13 PM SpeedEvil: Loetmichel: I unfortunately before digital cameras, made a IC generator for my laptop that fitted inside the laptop.
05:13 PM SpeedEvil: https://coxengines.ca/cox-.049-engine-babe-bee.html + small PM motor + silencer/oil coalescer.
05:15 PM SpeedEvil: It worked, and powered the laptop, and the surface of the insertable battery module (that was designed to replace a floppy in the laptop as an option) diddn't get too hot, or vibrate too much - but I ended up not actually using it
05:16 PM Loetmichel: SpeedEvil: ha, the good old baby bee
05:17 PM SpeedEvil: And a fan of course.
05:17 PM Tom_L: wasn't there one smaller than that?
05:18 PM SpeedEvil: I think so, I don't remember if it was cox
05:18 PM SpeedEvil: as you get smaller, issues go up
05:19 PM Tom_L: .010
05:19 PM Loetmichel: i used this one: https://www.ebay.de/itm/ASP-AP-061A-WASP-2-stroke-engine-GALAXY-RC-/122751404824
05:20 PM Tom_L: i thought i had an .020 at one time
05:20 PM Loetmichel: screams like crazy though
05:21 PM Tom_L: https://coxengines.ca/28-cox-.010-tee-dee-engine-cbox.html
05:21 PM Tom_L: cute
05:28 PM Loetmichel: expensive though
05:37 PM JT-Shop: I really liked this HB engine http://www.mecoa.com/hb/10/40.htm
06:21 PM roycroft: hey folks
06:21 PM roycroft: when i let my water-cooled spindle sit for a while the water gets a bit rusty
06:22 PM roycroft: when i'm done using it i drain it, but just let it gravity drain
06:22 PM roycroft: note that the spindle is mounted nose side up, so the coolant inlet and outlet are facing down
06:22 PM roycroft: right now i removed the whole router lift and brew out the spindle coolant chamber with compressed air
06:23 PM roycroft: a fair amount of water came out, even though i had drained it previously
06:23 PM roycroft: so i guess what i need is some kind of rust-inhibiting coolant
06:23 PM roycroft: any thoughts on what would work?
06:24 PM roycroft: the spindle chamber is steel, the coolant pump cast iron with a plastic tank, and the fittings are stainless steel, brass, and aluminium
06:31 PM * djdelorie wonders if denatured alcohol would make a suitable coolant...
06:36 PM BeachBumPete: Ugh
06:40 PM roycroft: did you make it to our beautiful part of the country?
06:40 PM BeachBumPete: nope
06:40 PM BeachBumPete: working on it
06:41 PM roycroft: oh, i thought today was the day
06:41 PM BeachBumPete: expedia screwed me
06:41 PM roycroft: well the weather should be nice for the rest of the week
06:41 PM roycroft: nice as in not raining, some sunny breaks, and not a lot of snow in the mountains
06:41 PM BeachBumPete: they scheduled my connecting flight in Atlanta like 20 minutes after my first flight landed
06:41 PM roycroft: that's undoable, even in a tiny airport
06:42 PM BeachBumPete: then people took their sweet azz time getting off the damn plane
06:42 PM roycroft: and not even thinkable in atlanta
06:42 PM BeachBumPete: then I RAN thru the terminal to the train
06:42 PM roycroft: not duable, rather
06:42 PM BeachBumPete: rode the train four concourses over
06:42 PM BeachBumPete: then RAN to the gate only to watch the plane backing away
06:42 PM roycroft: you need at least an hour to make a connection there
06:43 PM roycroft: so you're sitting in the atlanta airport trying to book a flight
06:43 PM BeachBumPete: I had another flight scheduled from Portland to Bend and back after I landed in Portland
06:43 PM BeachBumPete: instead of that drive thru the mountains
06:43 PM roycroft: oh, i thought you were driving
06:43 PM BeachBumPete: but of course I missed that one now
06:43 PM roycroft: the drive would be nice, but it would take a while
06:43 PM roycroft: i hope i didn't scare you off
06:43 PM BeachBumPete: we were going to but the time was not gonna work
06:44 PM BeachBumPete: not with that snow etc.
06:44 PM roycroft: yeah, even though the snow is not too bad, you need to give yourself at least an extra hour or two each way
06:44 PM BeachBumPete: so NOW they scheduled me a flight around noon from ATL to SLC Utah
06:44 PM roycroft: oh dear
06:44 PM roycroft: i've done that before
06:44 PM BeachBumPete: now I am sitting in SLC airport
06:45 PM BeachBumPete: next flight is about 8 hours from now
06:45 PM BeachBumPete: directly to bend
06:45 PM roycroft: last time i was there they didn't even serve coffee anywhere
06:45 PM roycroft: but that's been a long time
06:45 PM roycroft: over 20 years ago
06:45 PM BeachBumPete: oh its actually nice here
06:45 PM roycroft: no booze, no coffee
06:45 PM roycroft: chocolate milk was frowned upon :P
06:45 PM BeachBumPete: had a great burger at the squatters pub in the terminal
06:45 PM BeachBumPete: sitting here on the laptop working on CAD drawings
06:45 PM roycroft: well you're only one timezone away
06:45 PM BeachBumPete: LOL
06:46 PM roycroft: so you'll get here eventually :)
06:46 PM BeachBumPete: supposed to be getting to bend around 1045
06:46 PM BeachBumPete: then to the Shilo Hotel via uber or something hopefully
06:46 PM BeachBumPete: so be in there around midnight local
06:46 PM roycroft: bend is a pretty happening place these days, but that late at night it's going to be hard to find a decent restaurant that's open
06:47 PM BeachBumPete: which is like 2-3 AM my time
06:47 PM roycroft: i would strongly advice dinner at the slc airport
06:47 PM roycroft: advise
06:47 PM BeachBumPete: just did
06:47 PM Tom_L: fun times travelling
06:47 PM BeachBumPete: no LOL Not really
06:47 PM roycroft: oh, yeah, i guess it's dinner time for your biological clock
06:47 PM Tom_L: well you got us to talk to :D
06:48 PM roycroft: except i'm leaving , but i don't matter
06:48 PM roycroft: i'd like any pointers on coolant though, before i go
06:48 PM BeachBumPete: use it ;)
06:48 PM Tom_L: what do cars use?
06:48 PM Tom_L: use that :D
06:48 PM roycroft: my spindle is steel
06:48 PM BeachBumPete: having some issues with that Guitar model I am playing with
06:48 PM Tom_L: so?
06:48 PM roycroft: coolant pump is cast iron
06:48 PM roycroft: tank is plastic
06:48 PM roycroft: and fittings are brass and aluminium
06:48 PM Tom_L: antifreze
06:49 PM andypugh: So use glycol
06:49 PM roycroft: i'd like something that both is anti-corrosion and anti-galvonic
06:49 PM BeachBumPete: APPARENTLY it is an SLDPRT
06:49 PM roycroft: i'm concerned because i have a couple fittings that are aluminium to brass, and i could not avoid that
06:49 PM roycroft: and they quick-disconnect
06:49 PM BeachBumPete: and once it is in Fusion360 you can toolpath it but you cannot seem to modify the model.
06:49 PM roycroft: soon to be welded together if i don't prevent it
06:49 PM andypugh: You could get fancy and use waterless coolant. https://www.carparts4less.co.uk/cp4l/p/-/-/-/-/?993778072
06:50 PM BeachBumPete: I found that there is a funny area along one of the horns of the guitar that I need to fix...
06:50 PM roycroft: i just want something that works
06:50 PM Tom_L: BeachBumPete, want me to spit out an iges?
06:50 PM roycroft: i'd prefer an anti-microbial agent as well
06:50 PM BeachBumPete: I can do that myself
06:50 PM Tom_L: should be able to work on that
06:50 PM roycroft: i've heard of folks dumping listerine in their coolant
06:51 PM Tom_L: everclear
06:51 PM roycroft: but that seems kind of funky
06:51 PM BeachBumPete: but I am hoping that I can just import that model and NOT loose all the work I already have done..
06:51 PM Tom_L: it's good practice
06:51 PM roycroft: i do have a gallon of concentrated coolant left over for my vw new beetle that got wrecked last year
06:51 PM roycroft: mayhap this would be a good use for it
06:52 PM roycroft: well, back to the shop for me
06:52 PM roycroft: good luck getting to bend, beachbumpete!
06:52 PM BeachBumPete: thanks man
06:52 PM roycroft: i hope the trip turns out to be worthwhile
06:53 PM BeachBumPete: hopefully
07:25 PM enleth: andypugh: your suggestion to use a collet to shrink ends of tubing worked
07:26 PM enleth: andypugh: it takes a hefty squeeze to deform nylon tubing permanently, but the result is nice and uniform
07:32 PM andypugh: Great
07:33 PM andypugh: Warmth would have helped, I guess.
07:33 PM andypugh: Anyway, time to call it a day
09:43 PM Tecan: https://www.ebay.ca/itm/4-Pin-1-To-3-Ways-PWM-Fan-Power-Supply-Y-Splitter-Sleeved-Extension-Cable-Wire/311996943553
09:43 PM Tecan: works good for i2c projects
11:29 PM miss0r: Goodmorning
11:31 PM Tom_L: good night
11:31 PM miss0r: matter of perspective :D
11:33 PM CaptHindsight: Good
11:33 PM CaptHindsight: times!
11:34 PM ziper1: would this be considered a one axis machine https://youtu.be/i-jrqN6V1ns?t=2m55s
11:41 PM miss0r: damn... 4.5 hours of sleep.
11:41 PM miss0r: That is the cost of having to be ready with my machine today . gah
11:49 PM CaptHindsight: i'd say 2 axis