#garfield Logs

Mar 16 2024

12:00 AM VanUnamed: you are lucky i didn#t use magic and swept all your printers away. Lol
12:13 AM rue_mohr: I would just make more
12:13 AM rue_mohr: I only stopped cause I'm out of places to put them
11:21 AM rue_mohr: whats the pitch?
11:21 AM rue_mohr: tooth
12:27 PM rue_mohr: I'm on call, so I shouldn't but, I'd like to try casting the replacement parts for the steam engine
12:27 PM rue_mohr: it would be nice to get that back on track
02:05 PM rue_shop2: 2 steps forward, 1 step back
02:05 PM rue_shop2: the Y toothed pulley has a stripped grub
02:07 PM rue_shop2: I was looking at the toothed belt from china
02:07 PM rue_shop2: what I'm using is apparently an L belt
02:07 PM rue_shop2: which is about 10mm pitch
02:08 PM rue_shop2: Rue, your here, talk to me would ya?
02:08 PM rue_shop2: The issue is the lash, not so much your belt
02:08 PM rue_shop2: thankyou.
02:08 PM rue_shop2: so, what do we use
02:08 PM rue_shop2: I liked the hydrualic motor idea
02:08 PM rue_shop2: do you think we have the pumps?
02:09 PM rue_shop2: 100:1? maybe
02:09 PM rue_shop2: so, will a pump have lash?
02:09 PM rue_shop2: well it shouldn't
02:09 PM rue_shop2: maybe we should set up the drive belt and give it a generic shaft to drive
02:10 PM rue_shop2: I dont think so, you may want to be mounting that directly to a pump
02:10 PM rue_shop2: ok, what are options
02:10 PM rue_shop2: pump
02:10 PM rue_shop2: gearbox
02:10 PM rue_shop2: well, pullies
02:11 PM rue_shop2: pulleys?
02:11 PM rue_shop2: whatever
02:11 PM rue_shop2: there is the idea of the rack
02:11 PM rue_shop2: yea we cant get a rack
02:11 PM rue_shop2: cant do a metal band...
02:12 PM rue_shop2: bike chain
02:12 PM rue_shop2: might get too much slip on it
02:12 PM rue_shop2: use the larger sprockets
02:12 PM rue_shop2: then we need more reduction
02:12 PM rue_shop2: so it goes
02:13 PM rue_shop2: well
02:13 PM rue_shop2: we have the L belt
02:13 PM rue_shop2: yea we have 54 inches and need 48
02:13 PM rue_shop2: so? we just have to be careful
02:14 PM Tom_L: things are back to normal.. rue's talking to himself again
02:14 PM rue_shop2: choose one, change later if you need
02:14 PM rue_shop2: yea, I'z the only perosn here
02:14 PM rue_shop2: how you doing today
02:14 PM rue_shop2: ?
02:14 PM Tom_L: been gone all day
02:14 PM rue_shop2: lash
02:15 PM rue_shop2: the gearbox we have slated for the Y axis has a bunch of backlash
02:15 PM rue_shop2: which we'd reasoned out wasn't an issue cause the Y axis is really heavy and its hung from that drive
02:15 PM rue_shop2: *but*
02:16 PM rue_shop2: you left didn't you
02:16 PM rue_shop2: no, I'm still here...
02:16 PM rue_shop2: its too bad we didn't work out dual drives
02:16 PM rue_shop2: yet
02:16 PM rue_shop2: right, yet
02:17 PM rue_shop2: is it easier with steppers?
02:18 PM rue_shop2: have a second stepper with a tension spring that follows eh?
02:18 PM rue_shop2: I think we need to just try something and get it kinda running
02:18 PM rue_shop2: ok, well then we have two immediate issues
02:19 PM rue_shop2: the stripped grub screw and the understized motor, and the lack of another 2:1
02:19 PM rue_shop2: we can upsize the thread to fix the grubscrew
02:19 PM rue_shop2: so we need to find a motor
02:20 PM rue_shop2: if your saying that motor is too small, and we agree that a vacuum cleaner motor is probably too big, what size do we use
02:20 PM rue_shop2: why dont we just use an oversized?
02:20 PM rue_shop2: another vac motor?
02:20 PM rue_shop2: why not?
02:20 PM rue_shop2: your not going to leave any for converting the truck
02:21 PM rue_shop2: oh yea, the truck motor...
02:21 PM rue_shop2: not this weekend!!!
02:21 PM rue_shop2: ok ok
02:21 PM Tom_L: you got too many projects
02:21 PM rue_shop2: hah, two would be too many
02:21 PM Tom_L: finish one then move on
02:21 PM rue_shop2: I think I have better motors for the truck, but I wanted to try ganging vacuum cleaner motors
02:22 PM rue_shop2: mostly cause it would make the truck sound like a freaking turbine (35? shop vac motors)
02:22 PM rue_shop2: I dont remember the math
02:22 PM Tom_L: too much loss in the links
02:22 PM rue_shop2: it was 80hp at about 1hp/motor, so you must be off
02:22 PM rue_shop2: well, its in the queue
02:23 PM rue_shop2: it wasn't 80 shop vac motors was it/
02:23 PM rue_shop2: I dont think so....
02:23 PM rue_shop2: but were working on the cnc right now
02:23 PM rue_shop2: Y is the only axis with no drive right now
02:24 PM rue_shop2: but we should also finish kinda bolting it togethor
02:24 PM rue_shop2: hmm we might need more foundation work
02:24 PM rue_shop2: so, do we use this 55:1 gearbox or not?
02:25 PM rue_shop2: this is the crux of our progress issue
02:25 PM rue_shop2: the hangprinter works for people
02:25 PM rue_shop2: and is slow as hell
02:25 PM rue_shop2: there isn't a lot of telling how fast we will be able to cut anyhow
02:26 PM rue_shop2: *sigh* if we could just pour money into these projects
02:26 PM Tom_L: air & butter cut pretty fast
02:26 PM rue_shop2: cut wood?
02:26 PM Tom_L: i picked one and concentrated the funds on it
02:26 PM rue_shop2: yea
02:26 PM rue_shop2: I have too many projects to put $1k into each
02:27 PM rue_shop2: and this machine would be about 8k if I just bought everything
02:27 PM rue_shop2: I'm barely at $40
02:27 PM rue_shop2: most of it being the bike chain that runs X
02:28 PM rue_shop2: WELL
02:29 PM rue_shop2: I dotn know
02:29 PM rue_shop2: lets try to break it down till its just binary answers
02:29 PM rue_shop2: mtoor
02:29 PM rue_shop2: not the one we put aside
02:29 PM rue_shop2: OK! lets find another motor
02:29 PM rue_shop2: !
02:31 PM rue_shop2: ok I need to know what k we need for this
02:31 PM rue_shop2: 1m/s
02:32 PM rue_shop2: pulley is 4cm
02:32 PM rue_shop2: why isn't circle installed on here!
02:33 PM rue_shop2: Circumfrence is : 12.566371
02:33 PM rue_shop2: 7.96 rotations/meter
02:34 PM rue_shop2: so 7.96 rotations/sec
02:34 PM rue_shop2: 478 rpm (rounding)
02:34 PM rue_shop2: then thru 100:1
02:34 PM rue_shop2: uh
02:35 PM rue_shop2: 47800 rpm?
02:35 PM rue_shop2: did we make a mistake?
02:35 PM rue_shop2: lets try again
02:35 PM rue_shop2: 4cm dia
02:35 PM rue_shop2: Circumfrence is : 12.566371
02:35 PM rue_shop2: so 1m is 100cm
02:36 PM rue_shop2: 7.95775 rotations/meter
02:36 PM rue_shop2: 1m/s
02:36 PM rue_shop2: 7.95775 rotations/second
02:36 PM rue_shop2: is that right?
02:36 PM rue_shop2: yes
02:37 PM rue_shop2: I think there is a problem
02:37 PM rue_shop2: I do to!
02:37 PM rue_shop2: its because your using the same reductions ratio with a smaller drive pulley
02:38 PM rue_shop2: ok, different take
02:38 PM rue_shop2: we want about 15 degrees on the motor to be 0.1mm
02:38 PM rue_shop2: ok
02:38 PM rue_shop2: so 0.1mm on that pulley is
02:39 PM rue_shop2: 40mm pulley
02:39 PM rue_shop2: Circumfrence is : 125.663704
02:39 PM rue_shop2: :/ 1/1256.64 of a rev
02:40 PM rue_shop2: its ok, keep going
02:40 PM rue_shop2: 0.286479 degrees
02:41 PM rue_shop2: ok and you want that to be 15 degrees on the motor
02:41 PM rue_shop2: says 52:1
02:41 PM rue_shop2: see?
02:41 PM rue_shop2: our gearbox is 55:1
02:41 PM rue_shop2: see!!!
02:41 PM rue_shop2: ok, so we redo with 55:1
02:41 PM rue_shop2: 4cm
02:41 PM rue_shop2: thanks
02:42 PM rue_shop2: Circumfrence is : 12.566371
02:42 PM rue_shop2: 7.95775 rev/sec
02:42 PM rue_shop2: 477.465 RPM
02:42 PM rue_shop2: 26260.6 RPM
02:43 PM rue_shop2: heh...
02:43 PM rue_shop2: er,
02:43 PM rue_shop2: yea, we still have an issue
02:43 PM rue_shop2: it we close up the angle control on the motor?
02:43 PM rue_shop2: 7 degrees?
02:43 PM rue_shop2: :s maybe
02:44 PM rue_shop2: can we control one of those motors to that?
02:44 PM rue_shop2: maybe?
02:44 PM rue_shop2: I need a drink
02:44 PM rue_shop2: were out of milk remember?
02:44 PM rue_shop2: damnit, I need tea milk
02:44 PM rue_shop2: shopping trip/
02:45 PM rue_shop2: do you rememmeber what else we forgot yesterday?
02:45 PM rue_shop2: milk
02:45 PM rue_shop2: no, we didn't know we needed that
02:45 PM rue_shop2: did we check the mail?
02:45 PM rue_shop2: yes, nothing there
02:46 PM rue_shop2: we should also start the laundry
02:46 PM rue_shop2: *sigh*
02:46 PM rue_shop2: ma isn't comming by like she said, is she?
02:46 PM rue_shop2: no, but I just remmebered you should ask if that boiler repair worked
02:46 PM rue_shop2: ok, and we need tigher motor control
02:46 PM rue_shop2: well, or to back off from the 1m/s
02:46 PM rue_shop2: it might be silly for Y
02:47 PM rue_shop2: 0.5m/s would jog it to the endstops in a reasonable time
02:47 PM rue_shop2: would it?
02:47 PM rue_shop2: yea, you with the 485ms patience
02:48 PM rue_shop2: how about this, we put it on a theaded rod and see how long it takes you to go insane
02:48 PM rue_shop2: ^^^ insane?
02:48 PM rue_shop2: oh shutup
02:48 PM aandrew: ... has rue lost it
03:15 PM rue_mohr: always, there is never anyone to talk to anywhere ever
08:35 PM rue_mohr: wtf
08:36 PM rue_mohr: sometimes I google myself and crazy stuff comes up
08:36 PM rue_mohr: 2157 {"_id":"rue_mohr","verb":"is","value":"a smart guy"}
08:36 PM rue_mohr: https://github.com/nathan7/reprap-factoids/blob/master/scrape.jsons
11:53 PM rue_mohr: polprog,
11:53 PM rue_mohr: Tom_L, ?