#garfield Logs

Feb 11 2018

12:00 AM katsmeow: my pcb driller was designed for only 1/4 inch stroke, plenty to account for deflection, a .100 thick pcd, plus clearance for table and head withdrawal
12:03 AM katsmeow: yeas,,, my drill press is terribly inaccurate of i movethetable, and the head stroke is too short to accound for stubby bits vs jobber length bits
12:03 AM Tom_L: i'm fallin asleep here. i better go to bed
12:03 AM katsmeow: nice work on the mill, Tom
12:03 AM katsmeow: happy sleeps
12:03 AM Tom_L: thanks
12:03 AM Tom_L: https://www.youtube.com/watch?v=GtFTRyS__Yc
12:03 AM Tom_L: one last video
12:03 AM Tom_L: tramming the head
12:03 AM Tom_L: gnite
12:03 AM katsmeow: thanks, will look at it on the laptop
12:03 AM katsmeow: gnite
12:19 AM rue_: ARG
12:27 AM Tom_L: rue_ did you see the new part?
12:27 AM Tom_L: i'm gonna do just a little more to it
12:27 AM Tom_L: near the a
12:27 AM Tom_L: arrows in the pic
12:35 AM rue_shop3: ? I dont see link
06:57 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/A9_rev1_1.jpg
06:57 AM Tom_L: <Tom_L> http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/A9_rev1_2.jpg
06:57 AM Tom_L: <zhanx> rue takes breaks?
06:57 AM Tom_L: <Tom_L> http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/A9_rev1_3.jpg
11:04 AM Tom_L: was gonna run a part this morning after making a few mods but it was cold and the machine didn't feel like waking up yet
11:04 AM Tom_L: so i let it sleep like you
12:42 PM rue_bed: oh wow yea, the r2..
12:42 PM Tom_L: i fixed a couple things since then
12:42 PM rue_bed: oh those radii
12:42 PM Tom_L: made the ballnose go around more
12:43 PM Tom_L: look good?
12:43 PM rue_bed: I dont know if we had a radii there, I think it was just a corner
12:43 PM Tom_L: i think i can fix around the arrows
12:43 PM rue_bed: it does look good
12:43 PM Tom_L: runs smooth
12:43 PM rue_bed: I shoudl see if its square or radius on ours..
12:44 PM Tom_L: just need a better fit around the can and i think i've got it
12:44 PM Tom_L: which i've already programmed..
12:44 PM rue_bed: i t looks like that ledge got too small tho...
12:44 PM Tom_L: the can lip?
12:44 PM Tom_L: i'm working on that
12:45 PM rue_bed: we have discovered that the thin bit cant be less than 1mm thick, or the cans aren't grabbed
12:45 PM rue_bed: it looks awesome, how long it take?
12:45 PM Tom_L: ~40 min
12:45 PM Tom_L: i cut a couple passes out so it may be less now
12:45 PM Tom_L: i'll see later
12:46 PM Tom_L: the ballnose takes time
12:46 PM rue_bed: the two pieces go around the can, if you just leave them a circle, you cant get the can out when they are cracked apart
12:46 PM rue_bed: we banged togethor a quick webpage last night
12:46 PM Tom_L: right
12:47 PM Tom_L: gotta run, check in later on...
12:47 PM rue_bed: k, see ya
01:59 PM Tom_L: ok maybe i'll try running one here in a bit
02:00 PM Tom_L: then i'll send you the scraps to look at
02:15 PM rue_shop3: :)
02:16 PM rue_shop3: did you want a number?
02:16 PM rue_shop3: I should have my brain mostly to myself today
02:20 PM Tom_L: 6?
02:20 PM * Tom_L rolls the dice again
02:26 PM rue_shop3: the arrows you were interetsed in that radius, but there isn't one?
02:27 PM rue_shop3: did you catch that last image on our horrible webpage?
02:32 PM Tom_L: no
02:32 PM Tom_L: the arrows point to the transition from the large center radius to the forks
02:33 PM Tom_L: i extended the 'lip' out a little so it should fit on the can now i hope
02:39 PM rue_shop3: if the hole is done as a circle, you cant get the can out without it snagging
02:39 PM rue_shop3: it was one of the early, "huh?" moments
03:25 PM Tom_L: the trick to that is make the exit point of the can inside the halfcircle instead of at it
03:25 PM Tom_L: fwiw
03:54 PM rue_: ok
05:10 PM rue_shop3: he was reading imperial, he probably meant 0.1 inches
05:10 PM rue_shop3: arg
06:01 PM rue_shop3: 1/5 of the can holders were making (16 hr machine time, 4 hrs labour) aren't grabbing the cans
06:02 PM rue_shop3: turns out they have a variation of the head on the can
06:02 PM rue_shop3: slight difference in the thickness of that thin bit and its all out the window
06:33 PM Tom_L: cnc will make it consistent
06:33 PM Tom_L: be it good or bad
06:34 PM Tom_L: you see how long it's taken to make it to the shop and i'm still not there yet
06:37 PM Tom_L: i did manage to put polycarbonate around the table and caulk it so it won't leak hopefully
07:07 PM Tom_shop: finally!
07:07 PM Tom_shop: doing a dry run on the program first
07:49 PM Tom_shop: ok at least the table isn't leaking so far
07:55 PM zhanx: I am boiling water for a leak test right now.
08:39 PM rue_shop3: nice
08:39 PM rue_shop3: you might want a bit of soemthing over the drain pipe to make sure its not plugged up with chaff
08:39 PM rue_shop3: can we see?
08:41 PM Tom_shop: i left the phone in the house
08:42 PM rue_shop3: oh yea, I was gonna set up that Pi to post images
08:42 PM rue_shop3: that might be a good project
08:42 PM rue_shop3: ok, plane marker lights
08:43 PM rue_shop3: so I should adjust a 555 for more of a short duty strobe type flash
08:43 PM rue_shop3: I wonder what a pilots reaction is if their driving down the road and suddenly notice plane marker lights comming at them from 6' altitude
08:44 PM rue_shop3: prolly to accidently run over my cat
08:44 PM rue_shop3: where is that pi
08:46 PM rue_shop3: https://qph.ec.quoracdn.net/main-qimg-ca971ac9f38e44326e7609cbf5a660d7-c
08:47 PM rue_shop3: so I need 2 blinking white and a blinking red
08:47 PM rue_shop3: and constant red and green
09:47 PM Tom_L: got video but the part is scrap
09:48 PM Tom_L: i gotta figure out what's going on with it, the offsets keep changing on me for some odd reason
10:12 PM ASRock_pc: https://www.youtube.com/watch?v=ypl4zibMdFo&feature=youtu.be
10:12 PM Tom_L: give it about 10-15 min to load
10:13 PM Tom_L: rue_shop3, they landed one on the highway here a few years ago
10:13 PM Tom_L: test pilots forgot to add enough fuel to it
10:13 PM Tom_L: dumb shits
10:25 PM rue_shop3: blew the math?
10:26 PM rue_shop3: or ordered not to use more than x amount of fuel
10:26 PM rue_shop3: Tom_L, your mean the zeros aren't stable?
10:26 PM rue_shop3: by how much?
10:27 PM rue_shop3: those switches not triggering within the .00001" that the reprap people swear they do?
10:27 PM rue_shop3: I'm playing with feed rates a bit, see if I can push the sherline a little
10:29 PM rue_shop3: 47mm/min @ 2200rpm on a 1/8" in aluminum at 0.25mm
10:30 PM rue_shop3: I think I can safely double it
10:32 PM Tom_L: i'll take a pic of the boo boo it did
10:32 PM Tom_L: the video should be ready
10:32 PM rue_shop3: I have to view it on a different machine
10:32 PM Tom_L: it's boreing
10:32 PM rue_shop3: youtube is getting more difficult
10:32 PM Tom_L: it's a ballnose
10:33 PM rue_shop3: I'd like to see the bit, I have a dremel ballnose, but its not that ball...
10:33 PM rue_shop3: more inverse water drop
10:33 PM Tom_L: i gotta go out and copy the config to look it over anyway, i'll take a pic
10:33 PM Tom_L: gimme a few..
10:33 PM rue_shop3: did you say the zero on the machine is playing up?
10:34 PM Tom_L: yeah
10:34 PM rue_shop3: one or more?
10:34 PM Tom_L: the G54 offset
10:34 PM rue_shop3: ?
10:34 PM rue_shop3: the limit switches?
10:35 PM rue_shop3: when I built my second cnc machine, I had to mix the limit switches with an interrupter on the drive rod
10:35 PM rue_shop3: only when they both came in was it at zero
10:41 PM Tom_L: i'm using the exact same config i had on the sherline
10:41 PM Tom_L: with larger cutting area
10:46 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/Extra/A9_error.jpg
10:46 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/Extra/Ballnose.jpg
10:46 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/Extra/Tools.jpg
10:46 PM Tom_L: i was running the ballnose at 120% on that part
10:47 PM rue_shop3: huh interseting
10:47 PM rue_shop3: did it rezero?
10:47 PM Tom_L: i gave up for tonight
10:47 PM rue_shop3: oh! I have some ballnose like that!!!!
10:47 PM Tom_L: i fiddled with it and got it to zero for the ballnose but when it changed back to the flat cutter it did what you see
10:48 PM Tom_L: both those are carbide
10:48 PM rue_shop3: COOL, cause I couldn't find any flat bits, and there was a hole in my pocket, so I bought the ballnose
10:48 PM Tom_L: i was kinda surprised how well it performed actually
10:48 PM rue_shop3: how do those bitholdeers work?
10:48 PM Tom_L: because it hit the wall of the material a few times and didn't snap
10:48 PM Tom_L: i like them
10:48 PM rue_shop3: cool
10:49 PM Tom_L: they have a metric grub screw though
10:49 PM rue_shop3: maybe you can take off more in a pass than you thought :)
10:49 PM Tom_L: i'll work my way up to a broken cutter soon enough
10:49 PM rue_shop3: but...
10:49 PM rue_shop3: whats that attaching to on the spindle?
10:49 PM Tom_L: just having a rigid machine helps tons
10:50 PM Tom_L: where?
10:50 PM rue_shop3: the sherline I have, has a ...large outter thread and a taper for a draw-collette
10:50 PM Tom_L: they're threaded
10:50 PM Tom_L: so you can tool change consistently with them once they're set
10:50 PM rue_shop3: they go on that outter thread high up on the spindle?
10:50 PM Tom_L: good repeatability
10:51 PM Tom_L: they just screw on the bottom of the spindle
10:51 PM rue_shop3: is the leftmost one your tap thinger?
10:51 PM Tom_L: centerdrill
10:51 PM Tom_L: i just had a nice valenite extension for it
10:51 PM Tom_L: $$$
10:51 PM rue_shop3: oh, compliant shaft?
10:52 PM Tom_L: i just got a 1/2" collet for it
10:52 PM Tom_L: so i can tool change without the drawbar with it
10:52 PM rue_shop3: hmm
10:53 PM rue_shop3: when did the clamp get in the way?
10:53 PM rue_shop3: of the bit...
10:53 PM Tom_L: long time ago
10:54 PM rue_shop3: it looks like armyofevilrobots tried to cut the tapered end of his off in one-go
10:54 PM rue_shop3: its not quite a bits radius deep
10:54 PM Tom_L: once i get it running good i'll make some more
10:55 PM rue_shop3: hmm, with the flip for doing that taper?
10:55 PM rue_shop3: have you done a bolt-torque-check on it? you have, what, ~5hrs runtime now?
10:56 PM Tom_L: not yet
10:56 PM Tom_L: i'm fairly sure they're all still tight
10:56 PM Tom_L: it's pretty smooth running
10:56 PM rue_shop3: there is nothing like checking up on the job and seeing a nut sitting beside the material that you cant place...
10:56 PM rue_shop3: cool
10:56 PM rue_shop3: so, what was the total wallet damage?
10:57 PM rue_shop3: 1100?
10:57 PM Tom_L: i doubt it's that much
10:57 PM rue_shop3: cool
10:57 PM rue_shop3: the slides you got are from usa right? I was looking at china ones, but I think the shipping kills the prices
10:58 PM Tom_L: usa stock but china made
10:58 PM rue_shop3: hmm
10:58 PM Tom_L: i can't find the company that made those collets
10:58 PM rue_shop3: sherline?
10:58 PM Tom_L: aftermarket
10:58 PM Tom_L: i've got some sherline ones too
10:59 PM rue_shop3: https://www.thingiverse.com/thing:2790590
10:59 PM Tom_L: i might still have a box for one somewhere
10:59 PM rue_shop3: I'm wondering if I can make them
10:59 PM rue_shop3: that thread looks trickey
10:59 PM Tom_L: what is it?
11:00 PM Tom_L: oh collets?
11:00 PM rue_shop3: a lens for a ole trailer light
11:00 PM Tom_L: it's got a recess in the bottom
11:00 PM Tom_L: thread relief
11:00 PM rue_shop3: hmm
11:00 PM Tom_L: pretty common
11:00 PM rue_shop3: yea, but the thread is shallow, prolly 1/2"
11:01 PM rue_shop3: my lathe dosn't do less than 150rpm
11:01 PM rue_shop3: AAAAAAAAAAAAAAAAAAAHHHHHHHHHHHHHHHHH@#$%@#$%!#$%^!#$@!@$#@$^, ... and restart project
11:02 PM rue_shop3: hmm, hex stock I suppose...
11:02 PM Tom_L: those are yes
11:02 PM rue_shop3: round, flip, shape
11:03 PM Tom_L: https://littlemachineshop.com/products/product_view.php?ProductID=2475&category=-1480411007
11:03 PM Tom_L: 3/4 16 thread
11:04 PM * rue_shop3 thinks about that
11:04 PM rue_shop3: thats a bolt thread
11:05 PM rue_shop3: I could make them out of huge-ass link nuts
11:05 PM rue_shop3: if they were $23 I could just buy them :)
11:05 PM rue_shop3: ($23 + conversion, +~$60 chipping)
11:06 PM rue_shop3: I could press a peice of solid into a bored out peice
11:06 PM rue_shop3: tho, I should think about my new machines
11:07 PM Tom_L: A2Z cnc may not be around anymore
11:07 PM Tom_L: that's where i got them
11:09 PM Tom_L: https://littlemachineshop.com/products/product_category.php?category=-1480411007
11:09 PM Tom_L: that's the closest link i can find to them now
11:10 PM rue_shop3: hey, I should try to make that MT collette for my new machine
11:10 PM rue_shop3: (not *right* now)
11:14 PM rue_shop3: according to the speed/feed calc, I can do 210mm/min at 12krpm with a 1.5mm bit in alum
11:15 PM rue_shop3: wonder how I know what the DOC is..
11:19 PM rue_shop3: so, it looks like the ideal bit size for the sherline is 6mm, and the machine I built 1.5mm
11:19 PM rue_shop3: based on the max rpm of the machine
11:20 PM rue_shop3: :) I fixed the nc file spooler so you cant jump to a different line of the program while its running
11:21 PM rue_shop3: which is odd, cause I thought I had that in there
11:37 PM Tom_L: 6mm might be pushing it for a stock sherline
11:37 PM Tom_L: they're just not that rigid
11:38 PM Tom_L: measure the DOC or get it off the cutter tube it came in
11:39 PM Tom_L: if i would have attempted this on the sherline i would have broke both mill cutters
11:40 PM rue_shop3: but you could varry the DOC for the machine
11:41 PM rue_shop3: playing with the calculator went there
11:41 PM Tom_L: my cad cam has the calculator built in
11:41 PM rue_shop3: It sorta says to use more than a 2 flue cutter on a machine with a top of 3300rpm
11:41 PM rue_shop3: yea, I remember that mastercam did
11:41 PM Tom_L: no, you want a 2 flute on aluminum
11:41 PM rue_shop3: ?
11:41 PM Tom_L: when did you use mastercam?
11:41 PM rue_shop3: chip clearing?
11:41 PM Tom_L: yes
11:42 PM Tom_L: 4 will load up on aluminum
11:42 PM rue_shop3: heh, I used mastercam back in 1998
11:42 PM Tom_L: practically guaranteed
11:42 PM rue_shop3: hmm k
11:42 PM Tom_L: that's probably about when i bought smartcam
11:42 PM Tom_L: maybe earlier
11:42 PM rue_shop3: mastercam used a dongle,
11:42 PM Tom_L: so did mine
11:43 PM rue_shop3: I have a copy of mastercam, but no dongle
11:43 PM Tom_L: until i cracked it
11:43 PM rue_shop3: :-|
11:43 PM rue_shop3: so, this whole time I could have just cracked my mastercam?
11:43 PM Tom_L: back then there was a canadian ( of all ppl ) company that had a crack for it
11:43 PM rue_shop3: wait, I dont know if that would be a step forwards or backwards...
11:44 PM rue_shop3: its not linux, I'll call it backwards
11:44 PM rue_shop3: what happened to my pi project?
11:47 PM Tom_L: i see what's goin on with my problem i think
11:47 PM Tom_L: i was looking at the config
11:47 PM rue_shop3: ?
11:48 PM Tom_L: maybe operator error
11:48 PM Tom_L: i hope so anyway
11:49 PM Tom_L: when you do a fixture offset you set it with a tool
11:50 PM Tom_L: and there's a button for the fixture for x y and z and also for the tool itself
11:50 PM Tom_L: but you generally only set Z for a mill
11:50 PM Tom_L: i was looking at the tool table and see a X entry for one of the tools that shouldn't be there
11:50 PM rue_shop3: I'v never done a job thats more than 1 bit
11:50 PM Tom_L: i must have inadvertently set x to the tool instead of the fixture
11:51 PM Tom_L: it's nice to be able to
11:51 PM rue_shop3: wait, I did a 2 bit job
11:51 PM Tom_L: i'll show you...
11:51 PM rue_shop3: on one of these
11:51 PM rue_shop3: yea, I did an engraving and a outline
11:51 PM rue_shop3: but they were seperate files
11:52 PM ASRock_pc: T1 P1 Z-0 D0.045 ;#1 center drill
11:52 PM ASRock_pc: T5 P5 X-0.72517 Z-1.91721 D0.125 ;1/8" end mill
11:52 PM rue_shop3: I just didn't unzero the machine between them, reset the z between
11:52 PM ASRock_pc: T14 P14 Z-1.94041 D0.125 ;1/8" ballnose
11:52 PM rue_shop3: .72 inch error?
11:52 PM Tom_L: see T5 has an X entry and it shouldn't
11:52 PM Tom_L: yes
11:52 PM rue_shop3: was the error on X?
11:52 PM Tom_L: i bet that's what the problem is
11:52 PM Tom_L: it was on X
11:52 PM rue_shop3: isnt that y
11:52 PM rue_shop3: k
11:53 PM Tom_L: it wasn't apparent because i can send it to zero with any tool but with that tool it wouldn't go where it was supposed to
11:53 PM Tom_L: it would go to that offset
11:54 PM Tom_L: so when i corrected the offset with that tool it threw the others off
11:54 PM rue_shop3: ah
11:54 PM Tom_L: because it added that to it
11:54 PM rue_shop3: you need to keep an eye open to not change xy on tool changes
11:54 PM Tom_L: it could be a better interface but it is what it is
11:55 PM Tom_L: i fixed one on T14 already
11:55 PM rue_shop3: I still havn't written the code to use the pendant with my spooler software
11:55 PM Tom_L: but i missed that one
11:55 PM rue_shop3: T14? you have a long list of tools defined...
11:55 PM Tom_L: and if a tool hasn't been set there's no entry
11:55 PM Tom_L: i got T26 defined
11:56 PM rue_shop3: all the bits you've used?
11:56 PM Tom_L: and they match my cad cam tool list
11:56 PM Tom_L: some i haven't
11:56 PM rue_shop3: ok
11:56 PM Tom_L: i added a reamer the other day
11:56 PM rue_shop3: I should note that for my cam software
11:56 PM Tom_L: and T14 1/8" ballnose which i didn't have
11:57 PM rue_shop3: dosn't a ream have to be used at like sub 60rpm?
11:57 PM Tom_L: see they have those other offsets in there because it could also control a lathe or other machine
11:57 PM Tom_L: slower rpm is better
11:57 PM Tom_L: like less than 200 or so
11:57 PM Tom_L: it doesn't make alot of difference
11:58 PM rue_shop3: sherline dosn't have .. oh you PID'd it
11:58 PM Tom_L: yes
11:58 PM Tom_L: reamer... in dwell out
11:58 PM Tom_L: it holds it pretty good too
11:58 PM rue_shop3: so you have the old motor controller living disconnected in that box?
11:59 PM ASRock_pc: http://tom-itx.no-ip.biz:81/~webpage/rue/Control4.jpg
11:59 PM rue_shop3: my speed controllers do quite well
11:59 PM Tom_L: it's mounted to the door
11:59 PM rue_shop3: no, the old one
11:59 PM rue_shop3: ...
11:59 PM Tom_L: that is the old one
11:59 PM Tom_L: you mean the old amp?
11:59 PM Tom_L: it's on a shelf