Dec 05 2021
01:30 AM CaptHindsight[m]: if you can cool that spindle and can live with a few thousands of an inch runout under load you can easily get 10K Chinese watts into it at 8k rpm
01:37 AM CaptHindsight[m]: 9kw of Chinese heat
02:08 AM Bleepshop: CaptHindsight[m]: I'll live with it. Especially since it won't wail like a dying banshee unlike the PC-75182 I'm using for a spindle now.
02:10 AM Bleepshop: Even under no-load this thing is a screamer, add the shopvac and it hits the point of noise complaints... Most of them from me admittedly... LOL
02:35 AM Deejay: moin
05:30 AM Tom_L: morning
05:39 AM t4nk_freenode: good afternoon, Sir
05:54 AM JT-Cave: morning
08:51 AM _unreal_: clueless is back ;)
09:18 AM unterhausen: jessem website has popped up the same thing 3 times on a single visit
09:19 AM _unreal_: ?
09:20 AM Tom_L: it worked
09:20 AM Tom_L: you told us
09:20 AM _unreal_: ?
09:20 AM Tom_L: _unreal_> clueless is back ;)
10:10 AM -!- #linuxcnc mode set to +v by ChanServ
10:10 AM -!- #linuxcnc mode set to +v by ChanServ
10:47 AM unterhausen: fedex thinks my package is going to get here today even though the tracking status says they haven't gotten it yet
10:47 AM unterhausen: somehow I don't think it's getting here today
10:50 AM Tom_L: it's called hope
10:51 AM unterhausen: if it werent for the fact that fedex employees have been throwing packages into the woods I would feel more confidence
10:51 AM Tom_L: put up a big net to catch them
10:52 AM Tom_L: and a motion sensor attached to a paintball gun
10:52 AM unterhausen: it has all been hundreds of miles south of here
10:53 AM unterhausen: alabama. But there was a copycat in Georgia, I think
10:55 AM unterhausen: the first guy did it at least 6 times, 450 packages. That seems like an entire day's worth of packages to me
10:56 AM Tom_L: he was having a bad day.. needed a break
10:56 AM Tom_L: perfectly ok...
10:57 AM Tom_L: especially in Ga
11:01 AM unterhausen: I can understand that. Especially feel for the postman here delivering 100 packages a week to our next door neighbor
11:04 AM Tom_L: at least he gets to unload his truck in one spot
11:18 AM unterhausen: I hope he enjoyed his days off
11:22 AM Tom_L: truthfully, your package is on a cargo ship stuck in the bay somewhere. they just wanted you to feel better about it's progress
11:23 AM Tom_L: that's about how their tracking systems work nowdays
11:45 AM unterhausen: that would be weird given that it started in Atlanta, but according to roycroft's experience with alaska it's not out of the realm of possibility
11:53 AM -!- #linuxcnc mode set to +v by ChanServ
12:06 PM -!- #linuxcnc mode set to +v by ChanServ
12:25 PM * t4nk_freenode slaps CloudEvil around fairly heftily with a large-ish 5nm router bit
12:25 PM t4nk_freenode: https://postimg.cc/gallery/nBF1r13
12:25 PM t4nk_freenode: I think it's pretty promising
12:25 PM t4nk_freenode: for a first try
12:27 PM Bleepshop: t4nk_freenode: SD extender?
12:28 PM t4nk_freenode: more like... sd-Ender!
12:28 PM t4nk_freenode: ;)
12:29 PM t4nk_freenode: the socket is just to have a working card reader... all of the cheap ones seem to break within seconds
12:29 PM Bleepshop: I've got a SD<>Micro-SD adapter sleeve I soldered pins onto to stuff in a protoobard.
12:30 PM t4nk_freenode: and the sd card is to shove into my ender, so I can transfer a file wirelessly to the sd card, and then print
12:30 PM t4nk_freenode: Bleepshop, you mean the card part?
12:30 PM t4nk_freenode: or the socket?
12:31 PM Bleepshop: One of these. https://ae01.alicdn.com/kf/HTB1KtgFPXXXXXaxXFXXq6xXFXXX7/TF-Card-To-SD-Card-Sleeve-TF-Adapter.jpg
12:33 PM t4nk_freenode: ah yeah, so you have bigger points to solder onto
12:33 PM t4nk_freenode: euh
12:34 PM t4nk_freenode: plus you won't ruin your sd card
12:34 PM Bleepshop: Solder on a set of pins and then I have a Micro-SD socket for the breadboard.
12:34 PM t4nk_freenode: hehe
12:34 PM Bleepshop: Yeah, this way the micro will still fit in the reader. LOL
12:36 PM t4nk_freenode: I saw some projects today where they soldered directly onto the good card... don't think that's very smart
12:37 PM Tom_L: how is that different than soldering other electronics?
12:37 PM Bleepshop: I try to avoid that. Too easy to fry one with the static levels at this altitude and our normal humidity levels.
12:38 PM Tom_L: using the static precautions you normally should
12:38 PM t4nk_freenode: nah, Tom_L, I mean... by soldering onto a micro sd card... the card is done for, unusable for other things
12:39 PM Bleepshop: Tom_L: Oh yeah, I have static drain points [grounded lates] wired all over and I'll build a static charge walking 10'.
12:39 PM Bleepshop: plates
12:42 PM Bleepshop: When you pick up the cat and you both end up looking like you've been through the dryer on "Fluff-Air" you know you have a static issue. LOL
01:26 PM -!- #linuxcnc mode set to +v by ChanServ
01:29 PM -!- #linuxcnc mode set to +v by ChanServ
03:53 PM * flyback dropkicks Bleepshop
03:55 PM * Bleepshop wraps flyback with 10 turns of #12 wire and apllies 250V oscillating at 40kHz...
03:58 PM flyback: heh
04:07 PM _unreal_: So I'm starting to solve and gather parts for a new home cnc machine. My current one is fine but I have 50% of the parts to build a new one I may as well consider it
04:35 PM _unreal_: WOW just did some math. so these BLDC motors I have because they have encoders on them they may only be 30/oz-in they are capable of 2150 RPM with out any encoder loss. So that translates with the pully reduction of 6-1 producing 180oz/in torque from the motor moving the x and y axis at around 700mm/min. A 1/2-13 thread driven with 180oz/in if my math is right is something north of 2000 oz/in
04:35 PM _unreal_: at 700/mm-min fewwwwwww
04:54 PM skunkworks: https://www.youtube.com/watch?v=xoHajQaHcOU
06:29 PM Tom_shop is now known as Tom_L
06:41 PM roycroft: grr
06:42 PM roycroft: i finished making my parts, to find out in the end that one row of holes was off by exactly 0.100"
06:42 PM roycroft: i should fire the dumbass who doesn't know how to count revolutions of a hand crank
06:42 PM roycroft: actually, now
06:42 PM roycroft: no
06:43 PM roycroft: because the two rows of holes are perfectly centered on the parts
06:43 PM roycroft: instead, i need to fire the dumbass who cannot make a correct cad drawing
06:44 PM * roycroft swaps out one of his dumbass hats for another
06:45 PM roycroft: fortuantely i bought plenty of extra metal stock
07:03 PM Tom_L: now you got more practice material
07:03 PM roycroft: yeah
07:03 PM roycroft: or material for smaller parts
07:03 PM Tom_L: started cutting more chip guards for mine
07:03 PM roycroft: i made a mess
07:04 PM Tom_L: made some brackets to keep them from cracking around the screw holes like i should have done from the start
07:04 PM roycroft: that part of the new mill location i don't like
07:04 PM roycroft: so i'll probably have to figure out some way to keep the chips from flying everywhere
07:05 PM roycroft: which means i'll probably design the enclosure that i'll need when i cnc the machine and build it before i do the cnc conversion
07:05 PM roycroft: anyway, my drawing is fixe
07:05 PM roycroft: d
07:05 PM roycroft: and i think i'll go lay out one of the parts on the surface plate before i make them again
07:05 PM roycroft: to make sure the holes are in the right location
07:06 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Assembly/Final/Vise_parts/Table_side_brackets1.jpg
07:06 PM roycroft: each part is just 8 drilled and tapped holes and 4 drilled and counterbored holes, so wasn't that much work wasted
07:07 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Assembly/Final/Vise_parts/Table_side_brackets2.jpg
07:07 PM Tom_L: should help prevent the cracks you see there
07:08 PM Tom_L: i get cutoff plastic from a local plastic co
08:34 PM Bleepshop: Woohoo! Spindle/VFD have shipped but, wrench, collets and USB<>RS485 perverters are still in limbo...
08:40 PM _unreal_: ?
08:47 PM Tom_L: Bleepshop, you don't have rs485 on a mesa card?
09:24 PM roycroft: parts remade, and they work this time
09:24 PM roycroft: i did a bit of tweaking of my vfd
09:24 PM roycroft: the default acceleration/deceleration time was 10 seconds
09:25 PM roycroft: i changed it to 3 seconds, and i can make parts way faster now
09:29 PM Tom_L: i lowered mine also but left the decel nearly where it was
09:30 PM roycroft: i set it to 3 seconds on my belt grinder and it's been fine for months that way
09:30 PM roycroft: i figured it would be fine on the mill as well
09:30 PM Tom_L: first experience with vfd so i didn't want to overload it on decel
09:30 PM roycroft: yeah, i didn't drop it to 3 seconds on my belt grinder in one go
09:30 PM Tom_L: it stops pretty quick anyway
09:31 PM roycroft: and i'm not going to recommend that you lower it
09:31 PM Tom_L: accel made a big difference though
09:31 PM roycroft: because i don't want to be responsible for that :)
09:31 PM Tom_L: i wouldn't even if you did :D
09:31 PM roycroft: the mill took a long time to decelerate
09:31 PM roycroft: so my workflow was basically:
09:31 PM roycroft: spindle on - 10 seconds acceleration
09:32 PM roycroft: drill hole - about 4 seconds
09:32 PM roycroft: spindle off - 10 seconds deceleration
09:32 PM roycroft: swap part - about 3-4 seconds
09:32 PM roycroft: spindle on ...
09:32 PM roycroft: so you can see where most of the time was being spent
09:32 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/configs/NEW_MILL_SHOP_2.8.2/New_Mill_IO_Pinout.pdf
09:33 PM Tom_L: numbers on the last page i think
09:34 PM Tom_L: accel went from 6000 to 20000
09:34 PM roycroft: my vfd is configured differently
09:34 PM Tom_L: i didn't time it but it was much less than yours
09:34 PM Tom_L: yes
09:34 PM roycroft: the set points are time in seconds to max Hz
09:35 PM roycroft: and for deceleration, time in seconds to 0 Hz, of course
09:35 PM roycroft: from max Hz to 0 Hz
09:35 PM Tom_L: nothing gets remotely warm so i think i'm ok
09:35 PM roycroft: anyway, 3 seconds is a value i'm happy with
09:36 PM roycroft: 10 seconds not so much
09:36 PM roycroft: so i have gecko drive mounts now
09:37 PM roycroft: and i finished making the drawers for my band saw stand
09:37 PM * roycroft got a lot done today
09:50 PM roycroft: my spindle mount has left anchorage
09:51 PM roycroft: hopefully it will find its way back to the lower 48 soon, and show up at my door
09:51 PM roycroft: if it had arrived when it was supposed to instead of going on walkabout in alaska i would be drawing my z axis right now
10:46 PM -!- #linuxcnc mode set to +v by ChanServ