#linuxcnc Logs
May 18 2022
#linuxcnc Calendar
11:34 AM randy: travis_farmer853: "old" HP HF equipment also uses metal foil as shield; the only important thing is to connect the shield only on one side (where the signals are generated) to GND/digital ground/earth
11:43 AM randy: oh, and i think resent laptops also uses that for the DVI connection to the panels als well
11:43 AM travis_farmer853: thats how i have it, one side connected at the... well, actually they are connected on the other end from the signal generation...
11:47 AM randy: well, this shouldnt be critical, i think at least it should be connected _once_ to prevent ... "ground loops"? is this the correct term?
11:48 AM travis_farmer853: yes, it is, and i only connect the shield once.
11:50 AM Tom_L: using a star ground on everything
11:53 AM travis_farmer853: the backing board is covered with copper foil too, and i connect my shield grounds to that. i still have yet to ground the backing board, i think... i may have and forgot about it...
12:51 PM XXCoder: nice video about mic https://youtu.be/lNj-1vUmanQ
01:02 PM -!- #linuxcnc mode set to +v by ChanServ
01:04 PM XXCoder: gonna love those old goverment videos
01:07 PM roycroft: xxcoder: i opened the new filament package finally, while i was in the room where my 3d printer lives waiting for a machine to reboot
01:08 PM roycroft: it looks nice, and the spools are not as sharp and nasty as i've been told
01:08 PM roycroft: but i've not tried printing yet
01:08 PM XXCoder: roll edges sometimes have spurs but yeah sometimes its just perfect
01:09 PM XXCoder: I suspect they hire cheapest molding company possible and that company dont always clean up
01:26 PM c101horse8332[m]: i managed to do that at home once, certainly a dirty underwear moment
01:27 PM XXCoder: managed to do what?
01:38 PM roycroft: i'm doing a test print now
01:38 PM roycroft: i wish the new filament outfit made a grey filament
01:38 PM roycroft: i had to get silver, which i'm not thrilled with, but at 1/3 the cost of atomic, if it works ok i'll live with it
01:39 PM roycroft: my print job is set to atomic filament, which prints at 200 degrees with 65 degrees on the bed
01:40 PM roycroft: does that sound ok for gst3d pla+ ?
01:40 PM XXCoder: I used prusaslicer default for pla
01:40 PM XXCoder: not sure what it is lol
01:41 PM roycroft: well the first layer is sticking to the bed
01:41 PM roycroft: so it's off to a good start
01:42 PM XXCoder: so he worked on design some more. interesting https://youtu.be/X_QLxTVtyng
01:50 PM roycroft: whatever that video was, it's been deleted
01:51 PM XXCoder: its not
01:51 PM roycroft: well teh youtube denied me, saying "that video is not available anymore"
01:52 PM XXCoder: did a hard refresh, still here
01:52 PM roycroft: oh well
01:52 PM roycroft: i know they don't like me
01:52 PM roycroft: it's lunch time anyway
01:52 PM XXCoder: works on other browser
01:52 PM roycroft: which means time to move that drawer unit that is in the way of my new cabinets
01:52 PM XXCoder: https://www.youtube.com/c/kralyn3d
01:52 PM XXCoder: try indirect
01:53 PM roycroft: i just confirmed that i can go get the new table for my bandsaw today, so i'm heading over to woodcraft after work
01:53 PM XXCoder: awesome!
01:53 PM roycroft: i'll try later - i need to get this drawer unit moved
01:53 PM roycroft: and it's going to take most of my lunch break
02:22 PM MrSunshine__ is now known as MrSunshine
02:59 PM roycroft: well my first impression of the new filament is that it seems to be pretty decent
02:59 PM roycroft: the print looks like it may be slightly overextruded, so i'll dial that in a bit
02:59 PM roycroft: and i haven't done any durability testing yet, but it "feels" a bit less brittle than the atomic filament pla
03:00 PM roycroft: which is odd, because i've been told that pla+ is generally more brittle than pla
03:00 PM roycroft: i need to whack some boxes around, though, before i know for sure
03:01 PM roycroft: but unless the new stuff is way worse than what i've been using, $9.99/kg vs. $29.9/kg is a no-brainer
03:01 PM roycroft: especially when i'm ready to order 20kg
03:07 PM XXCoder: roycroft: yep
03:07 PM XXCoder: its not best, but then it works well enough. in general pla+ is bit more tough than pla
03:07 PM XXCoder: and slightly lighter I think
03:13 PM Tom_L: yt works fine here... roycroft did you piss them off too?
03:13 PM roycroft: i have not weighed the boxes
03:13 PM roycroft: i'll go grab a gram scale in a bit and compare
03:14 PM XXCoder: roy plastic should still be 1 KG, which means filament length is little bit longer
03:16 PM roycroft: not the boxes containing the spools
03:16 PM roycroft: the boxes that i printed
03:16 PM roycroft: i'll weight a box printed with the pla and an identical box printed with pla+
03:16 PM XXCoder: oh! yea
03:16 PM roycroft: the pla+ being a little lighter would explain the overextrusion
03:17 PM roycroft: well, maybe
03:17 PM roycroft: i guess it depends on if it shrinks or expands post-extrusion
03:37 PM roycroft: pla: 24.85g
03:37 PM roycroft: pla+: 26.38g
03:38 PM roycroft: so the pla+ box weighs just over 6% more than the pla box
03:39 PM XXCoder: interssting
03:39 PM XXCoder: might have remembered wrong. or maybe that guy meant he could design it thinner because of increased strength
03:40 PM XXCoder: 3d printed rc plane
03:42 PM roycroft: that could be
03:42 PM roycroft: it's lighter because it uses less material, not because the material is less dense
03:42 PM XXCoder: probably thats it yeah
05:07 PM * JT-Shop2 builds a coon lock
05:17 PM * Tom_L wonders why
05:21 PM JT-Shop2: to keep the coons out of the trash can
05:23 PM Tom_L: gettin a bit too curious ehh?
05:24 PM JT-Shop2: making a damn mess
05:24 PM JT-Shop2: need to put a trap down there and give it lead poison
05:24 PM * JT-Shop2 takes five with dave
05:24 PM Tom_L: high velocity lead?
05:25 PM JT-Shop2: cheap velocity lead
05:25 PM JT-Shop2: prob catch the neighbors dog lol
05:26 PM * JT-Shop2 needs to stop at manerds tomorrow and get some outdoor hinges
05:27 PM roycroft: i got my drawer unit moved at lunch
05:27 PM roycroft: all the carcases are not sitting on the base
05:28 PM roycroft: it's time to sand and oil the ash edge banding, then i can screw the carcases together and start work on the drawers
05:28 PM * JT-Shop2 looks for a photo
05:28 PM roycroft: i still have not decided what to do for a countertop on the cabinets, but i i'm going to move my stereo and some of the other things that sit on the countertop like my handplanes and adhesives back into the shop
05:29 PM roycroft: i have not taken any new ones since the post i did the other day
05:29 PM roycroft: but once the carcases are screwed together i'll take another photo or two
05:29 PM JT-Shop2: cool
05:29 PM roycroft: i installed a couple of the drawer slides at lunch today, just to make sure they fit
05:29 PM roycroft: i should have done that before drilling those 2000 holes :)
05:30 PM roycroft: but they do fit, and all the holes line up
05:30 PM JT-Shop2: did you make a drill template
05:30 PM roycroft: i have a veritas 32mm grid jig
05:31 PM roycroft: https://www.leevalley.com/en-us/shop/tools/jigs-guides-and-fixtures/42200-veritas-32-cabinetmaking-system?item=05J0602
05:31 PM roycroft: that
05:31 PM roycroft: i go the deluxe setup, and a bunch of extra drill guides, plus the doweling guide
05:31 PM roycroft: i've used it a few times, and it's definitely paid for itself
05:32 PM roycroft: i think i paid about $100 less than the current price for it though
05:33 PM roycroft: things have definitely gone up in price lately
05:33 PM JT-Shop2: 32mm vertical spacing?
05:34 PM roycroft: yes
05:34 PM roycroft: and what i do is drill a row at the front and the back of the cabinet side
05:35 PM roycroft: then when i'm done doing all of that, i take one of the spacer jigs and lay it across the side horizontally
05:35 PM roycroft: i can index it in the holes i already drilled, and then i have the 32mm grid horizontally as well
05:35 PM JT-Shop2: nice if you have a million holes to drill
05:35 PM roycroft: the drawer slides i bought had soem weird spacing
05:35 PM roycroft: but i found a set of holes spaced on the 32mm grid
05:36 PM roycroft: which is very standard
05:36 PM roycroft: well in my case it was a bit over 2000 holes
05:36 PM roycroft: not quite a million
05:36 PM roycroft: but enough where the jig was very useful
05:36 PM roycroft: with the jig, it took me about 20 minutes per panel to align the jig vertically and drill the two columns of holes
05:37 PM roycroft: and then another 20 minutes to do all the horizontal holes
05:38 PM JT-Shop2: I made an aluminum drill jig to make the under saw cabinet shelves but it was just a few holes for shelves
05:38 PM roycroft: i spaced my rows 64mm apart, not 32mm apart, as my smallest drawers are 62mm high, and the others are all multiples of 32mm -2mm
05:38 PM JT-Shop2: hmm I like this Marshal Tucker song
05:38 PM roycroft: the bushines for the veritas jig are hardened steel
05:38 PM roycroft: bushings
05:38 PM roycroft: so they will last a very long time
05:39 PM roycroft: you would not have gotten 2000 holes out of the jig you made without things getting really sloppy after a while
05:39 PM roycroft: but for only a few, i would have done something similar
05:39 PM JT-Shop2: would not even try to get 2000 holes with a bare aluminum jig
05:40 PM JT-Shop2: I did have to drill thousands of holes once for a project in steel and made an aluminum jig with drill bushings pressed in
05:40 PM roycroft: i am never going to do this again
05:40 PM roycroft: the next time i build a cabinet, it will be after i have a cnc router
05:40 PM JT-Shop2: never say never lol
05:41 PM JT-Shop2: that would speed things up for sure
05:41 PM roycroft: i'm not sure it would speed things up all that much
05:41 PM roycroft: a bit, sure
05:41 PM roycroft: but it would mean my arm and wrist do not ache for days after the drilling
05:42 PM roycroft: set it up, tell the cnc router what to do, and sip on a mojito while watching it do all the work
05:42 PM roycroft: that's how it should work
05:42 PM JT-Shop2: that project I did was to build 10 rotary flow through cleaning lines all covered with 11ga and by the time I was done I had trigger finger
05:43 PM JT-Shop2: yeah, oh you don't have just press play?
05:43 PM roycroft: back in the '80s i had a gang drill that would drill six holes at a time, spaced 32mm apart
05:43 PM roycroft: those drills are kind of a pain
05:43 PM roycroft: but they save a lot of work
05:44 PM roycroft: you have to get both left hand and right hand drills for them, because each spindle is geared directly to the one next to it
05:44 PM roycroft: that's how the 32mm standard came to be, btw
05:45 PM roycroft: 32mm spacing was the smallest size where the drive gears did not wear out quickly
05:47 PM * roycroft gets to sanding
06:01 PM JT-Shop2: interesting
06:04 PM Tom_L: cnc would make it easier on the body
06:06 PM Tom_L: those upside down glue guns looked kindof interesting
06:07 PM Tom_L: i wonder if they get better print results
06:07 PM _unreal_: so I just got a bunch of those sat.s
06:07 PM _unreal_: sat's
06:08 PM _unreal_: and one of the sat's I just got has a massive MASSIVE linear rail and two carriages
06:08 PM * JT-Shop2 listens to Roanne Cash
06:08 PM _unreal_: when I get it into the house and start taking it apart it should be amazing
06:08 PM _unreal_: I think the liner rail is almost 2" wide alone
06:12 PM JT-Shop2: hmm a little Janis to round out the night
06:13 PM Tom_L: quite a gal
06:13 PM JT-Shop2: yep
06:17 PM JT-Shop2: going to be a busy few days coming up, Friday getting Woody III spayed, Monday wife is getting her arm worked on, Tuesday getting the Ridgeline serviced and celebrating our 35th
06:18 PM roguish[m]: hot today. 91 outside. 76 inside. new AC
06:18 PM JT-Shop2: she has Calcific Tendonitis in her left rotator cuff
06:19 PM JT-Shop2: at least that's what I think the dr said
06:20 PM JT-Shop2: 73°F 50% in here
06:21 PM _unreal_: I am so excited to find out what linear rail I got
06:21 PM JT-Shop2: time to retire for the night that servo and turntable wore me out today scratching my head trying to sort it out
06:22 PM roguish[m]: had power outtage at 12:30 today for an hour...... no clue about cause.....
06:22 PM Tom_L: JT-Shop2, congrats and hope the rest goes well
06:23 PM Tom_L: although the ridgeline shouldn't need much yet
06:50 PM _unreal_: so one of the new sat's I just got and is still sitting in the mazda. the main axis the rotation axccess is so big that the servo motor is chain drive
06:50 PM _unreal_: heheh
06:50 PM _unreal_: its freaking cool
06:50 PM _unreal_: rotation axis
06:51 PM _unreal_: hum no ve7it yet
07:33 PM roguish[m]: _unreal_: Seatel ?
07:35 PM _unreal_: likely
07:35 PM _unreal_: I have not gone out to get it yet. will soon prob
07:36 PM roguish[m]: measure the dish diameter. that's how they're classified, that and band
07:38 PM CloudEvil: https://www.youtube.com/watch?v=X0WKo6gMawc&t=207s related
07:38 PM CloudEvil: Liebherr – LTM 1650-8.1 – Dem Weltraum ganz nah
07:40 PM * roguish[m] uploaded an image: (1053KiB) < https://libera.ems.host/_matrix/media/r0/download/matrix.org/sxEqMVtTEeMfcgmUPAmbxSgh/image.png >
07:40 PM roguish[m]: _unreal_: there's one I designed.. on a shaker table for vibration testing
07:41 PM Tom_L: what are the weights for?
07:42 PM CloudEvil: I would imagine to match dome weight
07:42 PM roguish[m]: they are primarily inertia stabilized. the weights create neutral balance on each of the 3 axes.
07:43 PM CloudEvil: ah
07:43 PM roguish[m]: there are motors on each of the axes, but they are for initial orientation, and signal optimization.
07:44 PM roguish[m]: the control system has gps, and tilt sensors, and ties into the a ship's nav system.
07:46 PM roguish[m]: ya give it the satelite position and it moves to find it. once found, it starts a small circular motion around the line of site to the satelite to keep it on signal.
07:47 PM roguish[m]: they're for ships. the ship or boat is rocking and rolling and turning, and the dish stays pointed at the satellite. gotta have your MTV
07:48 PM Tom_L: so it gets an average of decent signals instead of one stellar signal
07:49 PM Tom_L: it must react fairly quick
07:50 PM roguish[m]: they're pretty fricking good.
07:51 PM Tom_L: i bet
07:51 PM roguish[m]: yeah, when I started there, like 12 years ago, the primary controls system was written by 1 guy. 8000 lines of assembly code
07:52 PM Tom_L: what processor?
07:52 PM roguish[m]: don't recall. it was 8 bit
07:52 PM Tom_L: i'm sure they've changed in 12 years..
07:53 PM Tom_L: they got the accuracy they needed in 8 bits ehh?
07:53 PM roguish[m]: it's all been updated now. i think to a full 32 bit. new crew at the company, but he's still there. he's a hell of a character.
07:53 PM roguish[m]: yeah.
07:54 PM Tom_L: assembly is tedious but fun in it's own right
07:54 PM roguish[m]: look at pictures of big cruise ships. see the big domes on top. like 16' diameter.
07:54 PM Tom_L: yeah i've seen them
07:54 PM roguish[m]: lots of little parts, indeed.
07:54 PM Tom_L: been on a few
07:55 PM roguish[m]: i'll have to post one of my vib test videos on youtube.
07:55 PM roguish[m]: shake the living shit out of 'em
07:55 PM Tom_L: when the kids were younger one 'excursion' was to take a tour of the ship innards
07:55 PM Tom_L: i must say that was the best time spent
07:56 PM roguish[m]: boats and ships have lots of vibrations. waves, motors.......
07:57 PM roguish[m]: that's me in the background of that picture. just noticed.
08:03 PM roguish[m]: gotta g. dinner bbt
09:32 PM roycroft: so i have another table for my bandsaw
09:32 PM roycroft: i have not installed it yet, but when i went to woodcraft, i put a straightedge on their floor model before removing it, and it was flat
09:33 PM roycroft: after i removed it i installed one of the ones jet sent me on their floor model and it was high in the back, just like on my saw
09:33 PM roycroft: so i'm pretty confident that i finally have a flat table
09:34 PM * roycroft should go work on installing it now
09:36 PM skunkwor1s: thanks Tom_L !
09:36 PM * Tom_L :-)
09:37 PM Tom_L: i never seem to notice it
09:41 PM XXCoder: roy it really is insane how bad those is :( thankfully yours is fixed now
09:42 PM skunkwor1s: https://www.youtube.com/watch?v=tgtVG0S7OGs
09:46 PM XXCoder: encoder?
09:46 PM Tom_L: hall
09:51 PM skunkwor1s: gear tooth sensor.
09:51 PM skunkwor1s is now known as skunkworks
09:52 PM XXCoder: cool :D guess its for rpm
09:58 PM skunkworks: threading
09:59 PM skunkworks: gearing the motion to the spindle
10:00 PM XXCoder: ahh yeah have to sync for that
10:00 PM XXCoder: or tap gets less tappy
10:00 PM Tom_L: do you need an index pulse for that?
10:02 PM XXCoder: well, tap or cutting threads lol
10:02 PM XXCoder: so interesting https://youtu.be/mTK8dIBJIqg
10:18 PM XXCoder: I want to replace mainline chips mascot vector art with new one I made, but not sure if right
10:19 PM XXCoder: https://media.discordapp.net/attachments/970073721291292702/975283086558396466/revisionLinuxcncChipMascot.png this one
10:24 PM Ironhydroxide989: I've got a 7I76e on my Mill, I'd like to get my dro slides(encoders) into Linuxcnc. What mess daughter card would you suggest? 7i52? 7i85? Something else?
10:32 PM Tom_L: you should probably start by finding what is actually in stock that would fit the bill
10:32 PM XXCoder: probably hard enough to just find in stock
10:40 PM roycroft: i installed the table and it is flat!
10:40 PM * roycroft has bandsaw!
10:40 PM * XXCoder cheers!
10:40 PM roycroft: i also started screwing my cabinets together, and installing the drawer slides
10:41 PM roycroft: i was kneeling down on the concrete floor, feeling a lot of pain, and remembered that i have stall mats that sit in front of the cabinets
10:41 PM roycroft: now i won't kill my knees as badly
10:42 PM roycroft: i have three drawer slides installed, and 51 to go
10:42 PM roycroft: and that is pairs, of course
10:42 PM roycroft: i'm getting pretty tired, but i think i need to push on for a while
10:44 PM Tom_L: the real question though is; did you retrieve that wrench?
11:35 PM roycroft: i have not done so yet
11:35 PM roycroft: but it has been recently on my mind
11:35 PM roycroft: i have 10 pair of drawer slides installed now, only 44 pair to go
11:36 PM roycroft: but getting a whole box of them installed gives me a feeling of accomplishment
11:36 PM XXCoder: indeed
11:38 PM roycroft: every time i get a new bandsaw table i think about retrieving that wrench as part of the final setup
11:38 PM roycroft: and every time until today the fence has been unacceptable, so the entire project went on hold
11:38 PM roycroft: so now that i have a good fence, i might actually retrieve the wrench
11:40 PM roycroft: i just won tickets to a concert on tuesday next, so my entertainment schedule is getting even more full
11:41 PM XXCoder: lol
11:43 PM roycroft: and, s/fence/table/g
11:43 PM * roycroft is obviously tired, and his mind is wandering