#linuxcnc Logs

Jan 02 2022

#linuxcnc Calendar

01:18 AM * Bleepshop grins evilly...
01:25 AM Bleepshop: I should print this out, label it "Best guess of current machine circuits." and tape it to the molder I had to rewire the other day... >:) https://imgs.xkcd.com/comics/circuit_diagram.png
01:28 AM XXCoder: lol
01:52 AM Deejay: moin
05:10 AM JT-Cave: morning
05:51 AM Tom_L: morning
06:10 AM Tom_L: 9F
06:27 AM JT-Cave: 29°F high 30°F
07:30 AM JT-Cave: a bit windy and it's cold wind
08:43 AM JT-Shop: a 50' hose full of slush is heavy and hard to wind up...
08:55 AM _unreal_: well I got a little bit of sleep tonight
08:55 AM _unreal_: last night
08:55 AM _unreal_: for once
09:18 AM unterhaus_: apparently the download for the windows version of kicad is hosted on an arduino
10:30 AM _unreal_: man this sore though is just wild. I have no patches no nothing no fever...... but god damn it hurts and my though is just full of goo that keeps choking me.
10:30 AM _unreal_: last time I had something like this was in ....
10:30 AM _unreal_: 2002-2004
10:30 AM _unreal_: same thing
10:31 AM _unreal_: shit at first 24 bug ish? then after that nothing just sore though
10:34 AM _unreal_: does anyone do anything with python on windows?
10:35 AM _unreal_: hello?
10:52 AM * t4nk_freenode takes every single person in this room on to his lap and stuffs a fat cigar in their mouths; I don't care if you don't smoke, you are gonna smoke it... we're having a PARTY!!
10:52 AM t4nk_freenode: :))))
10:52 AM * t4nk_freenode finally has some success!
10:53 AM t4nk_freenode: *sigh*
10:58 AM t4nk_freenode: yeah guys... heh.. I'm happy!
10:59 AM t4nk_freenode: I started off lubing my z axis
10:59 AM t4nk_freenode: then things got so bad I almost got my saw out to build a new axis
11:00 AM t4nk_freenode: next I change my approach a bit...
11:00 AM t4nk_freenode: and now all of a sudden I've had a perfect result
11:01 AM t4nk_freenode: a-mazing.
11:01 AM t4nk_freenode: no backlash compensation on the z-axis
11:04 AM * t4nk_freenode sits in unbelief for a bit
11:12 AM JT-Shop: good to hear your making progress
11:13 AM * JT-Shop heads back to the coop
11:25 AM unterhaus_: I wonder if home depot just wiped all of their account information for a new year's present
11:33 AM unterhaus_: turns out only canadians are smart enough to buy what I wanted
11:40 AM JT-Shop: I'm thinking one oil filled heater is all the change the hens can take for one day
11:41 AM _unreal_: t4nk_freenode, ?
11:42 AM Tom_L: JT-Shop, get em all worked up this chilly morning?
11:43 AM Tom_L: i turned the pilot on in the garage to keep things from freezing. usually even in the single digits that's enough
11:44 AM _unreal_: t4nk_freenode, sooo what the hub bub?
11:46 AM t4nk_freenode: nothing man, I'm just pleased at the moment
11:47 AM _unreal_: ?
11:54 AM Bleepshop: JT-Shop: What I've been using for a chicken heater is some paving stones glued into a box shape with Gorilla Glue and then there's a 150W heat lamp bulb in a porcelain socket. Pavers act as thermal mass in case the power goes out which is common with snow on the lines.
11:55 AM JT-Cave: where do you place the heater?
11:55 AM Bleepshop: I used one with an SSR and a thermostat for a bathrom heater for years.
11:56 AM Bleepshop: I just stuck it in a corner of the 3'x4'x4' chicken house. Got a small vent to deal with humidity.
11:58 AM JT-Cave: hmm, I need to close the lower vent today for sure so only the upper soffit vents are open
11:58 AM JT-Cave: if I stick anything in the 4 year old's coop they might revolt lol
12:00 PM Bleepshop: It's 4 12"x12" pavers plus 4 4"x8" rectangles IIRC. There's one in both chicken houses. The younger ones were scared when it was added and had to be shooed in at night till it actually got cold and then they found out it's a warm spot to sit. LOL
12:01 PM Tom_L: JT-Cave, mine are wall mount on the center wall in the garage. just one side usually gets heated if i'm out there
12:01 PM JT-Cave: aye they all hate change for sure
12:01 PM JT-Cave: infrared heaters?
12:01 PM Tom_L: yes
12:02 PM Tom_L: i've found over the years the pilot is enough to keep things from freezing
12:02 PM JT-Cave: the older hens coop is one of those crappy raised coops that look like a coop but function very bad
12:02 PM Tom_L: and it heats up quick if i need to be out there very long
12:03 PM Tom_L: too bad you don't have a kero smudge pot :)
12:03 PM Bleepshop: That's what these work out to be. The one in the bathroom is nice. Drop your clothes and towel on top then hop in the shower and everything is toasty warm when you want it..
12:03 PM JT-Cave: nice
12:04 PM JT-Cave: well I removed the unused fancy nest box and now it's time for a nap
12:04 PM Bleepshop: JT-Cave: Is it one with the wire floor?
12:04 PM JT-Cave: and it looks like the hens are over the new heater
12:04 PM JT-Cave: no, wood floor with PDZ covering it
12:04 PM Tom_L: they'll forgive you once they feel the warmth
12:05 PM JT-Cave: it was a design that homer depot had on line years ago, they no longer have that one and have replaced it with a crapper one
12:06 PM JT-Cave: well they are all still down by the north end of the run so they are still worried about it... some chicken crack after the nap and they will forget
12:06 PM Bleepshop: I've got a 3"-4" layer of straw covering the wire in ours. Give it an occasional raking and add more straw as needed.
12:06 PM Bleepshop: JT-Cave: Mealworms? LMAO
12:06 PM _unreal_: t4nk_freenode, so what is going on?
12:07 PM Bleepshop: JT-Cave: Got 4 older hens and 2 ducks that are apeshit for them. Then the 2 younger hens are like "WTF am I supposed to do with these?". LOL
12:10 PM t4nk_freenode: _unreal_, nothing man, I just made progress
12:11 PM Tom_L: t4nk_freenode, awesome
12:11 PM t4nk_freenode: yeah, Tom_L, I'm not one for giving up, but it's been tough on me
12:16 PM t4nk_freenode: now I got some separate files for drilling the holes and cutting the board contour
12:20 PM t4nk_freenode: but I moved the position of the gcode of the main part arbitrarily
12:20 PM _unreal_: how are you setting up drill files?
12:20 PM t4nk_freenode: flatcam
12:21 PM _unreal_: o
12:21 PM _unreal_: ok
12:24 PM t4nk_freenode: I think I'll just leave this one alone and start anew
12:25 PM _unreal_: ?
12:34 PM Bleepshop: t4nk_freenode: M98/M99 are your friends... Break teh program into blocks and then string them together as you make them work right.
01:05 PM Bleepshop: Hmmm.. WTF am I doing wrong? If I run a straight 5 line program to draw an 8"x8" square it gives me rounded corners unless I add a 'G04 P0.1' as every other line. Tried with '/' and it does OK with the dwells but not without.
01:07 PM Tom_L: Bleepshop, G61 G64
01:09 PM Bleepshop: Tom_L: Yeah, i was just about to go "D'Oh! Remember G64 dumbass." LOL
01:39 PM t4nk_freenode: well, it's reproducable... I did another one where i did 3 passes per trace and it looks good
01:39 PM t4nk_freenode: but then I loaded the drill file, decided to leave my v-bit in first, and just dip at the center so my drill won't run out
01:40 PM t4nk_freenode: but the holes are all off center
01:40 PM t4nk_freenode: euh.. the centers are all off the holes ;)
01:41 PM t4nk_freenode: I did get rid of the backlash compensation for the z axis, but I left them for x and y... y is sort-of measured, but x was a bit arbitrary
01:41 PM t4nk_freenode: think I'll switc off compensation and see how that works, not sure
01:42 PM t4nk_freenode: think it'll need a bit for the x at least
01:44 PM Bleepshop: t4nk_freenode: Anti-backlash nuts on both?
01:44 PM t4nk_freenode: yes
01:46 PM Bleepshop: Try a simple experiment. Figure-8 pattern X0 Y0, X0 Y4, X4 Y4, X0 Y4, X4 Y4, etc. Hang an M99 on the end and see how far off it is after 10 cycles or so.
01:46 PM t4nk_freenode: I'll try it on a single trace first
01:48 PM t4nk_freenode: ah, ok, I'm probing now, I'll see how this goes and then I'll examine that
01:49 PM Bleepshop: I've been using a simple pattern like that for drift testing to see if I need to turn my speed/acceleration down.
01:50 PM t4nk_freenode: accel is at 100m/s/s now
01:51 PM Bleepshop: These old steppers are slower repsonse time than the newer ones and I had issues with it skipping steps all over when I first started tuning.
01:51 PM Bleepshop: t4nk_freenode: 100 meters/second ?
01:52 PM t4nk_freenode: ... I always type m when I mean mm ;)
01:52 PM Bleepshop: How in the hell is your gantry surviving 10G ... Oh... LOL
01:58 PM Bleepshop: t4nk_freenode: The other test I'll be using is drilling a 10x10 grid of holes, Figure-8 move, redrill, repeat until bored. When it's done each cycle I'll check the holes for round/straight with chunks of drill bit stem.
01:59 PM Bleepshop: And that's 'bored' as in "Am I happy with this crap yet?" and not bored through the plate. LOL
02:12 PM t4nk_freenode: yeah... without compensation it's not looking too good
02:13 PM t4nk_freenode: well, I wrote a program to automagically measure the backlash
02:16 PM t4nk_freenode: think I'll revisit that later on
02:17 PM t4nk_freenode: make more movements before probing
02:18 PM t4nk_freenode: and maybe, just for the sake of things, I'll set the jogging speed close to my actual feed
02:18 PM t4nk_freenode: further reduce accel too
02:20 PM t4nk_freenode: it's making rather fierce-ish movements when compensating
02:20 PM t4nk_freenode: the screw that is
02:20 PM t4nk_freenode: well, the stepper.
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02:35 PM t4nk_freenode: mmmm hang on
02:35 PM t4nk_freenode: if I home my machine... set zero for the first file
02:35 PM t4nk_freenode: do the file
02:36 PM t4nk_freenode: home the machine again..... then shouldn't I theoretically have to be at the same spot
02:36 PM Loetmichel_: t4nk_freenode: unless your homing switches have lots of "wiggle room" yes.
02:37 PM -!- #linuxcnc mode set to +v by ChanServ
02:39 PM JT-Shop: well I have two 600w oil filled heaters under the poop table and two 100w infrared black bulbs in the small coop...
02:39 PM -!- #linuxcnc mode set to +v by ChanServ
03:01 PM _unreal_: GOOD NIGHT IRINE WOW I wish I had come across this one before.
03:02 PM _unreal_: so I've been looking up suggestions on sore through treatment.
03:03 PM _unreal_: I just came across a new one I've never heard of. take a close cut off the ends and suck on it... chew ish it etc.. very very slowly get the juices out of it. and it will kill most of the through pain everywhere.
03:03 PM _unreal_: they where not kidding
03:04 PM _unreal_: god...
03:05 PM _unreal_: and now I have to get my daughter.... I'm not looking forward to a long drive dirt train tired from no sleep for the past week :(
03:05 PM _unreal_: xwife out of the blue is returning are daughter earlY....
04:37 PM andypugh: I have been playing with a touch-probe idea.
04:37 PM andypugh: https://photos.app.goo.gl/4jEoxVsNLi2XxVmaA
04:37 PM andypugh: https://photos.app.goo.gl/JJJ9cFZru8Wmh8RJA
04:38 PM Tom_L: andypugh, what material is that?
04:39 PM andypugh: PEEK
04:39 PM JT-Shop: what's different about it?
04:40 PM andypugh: It’s more about how it is made. I was trying to see if it was possible to make an adequate one using only a drill press and a hexagonal collet block.
04:41 PM JT-Shop: that's different for sure
04:41 PM andypugh: But it contains hardeed dowels rather than balls too.
04:41 PM JT-Shop: but you only need a touch probe if you have a cnc something?
04:42 PM andypugh: Yes… But if you have a router then drilling angled holes is possibly difficult.
04:43 PM andypugh: There will be a YouTube video coming to explain.
04:43 PM JT-Shop: ok
04:49 PM JT-Shop: hmm I guess I'll reboot Motion to see if it starts streaming the new chicken yard camera properly
04:49 PM JT-Shop: nope just had to press the start button for some unknown reason
04:50 PM Tom_L: foul play
04:53 PM andypugh: I was given the PEEK. I just looked at prices on eBay. It’s expensive stuff.
04:54 PM andypugh: Like, you could buy one of the probes from Versby for the price if the material I used :-)
04:54 PM JT-Shop: ouch
04:54 PM andypugh: Well, a friend fished it out of the skip where he works.
04:56 PM andypugh: And gave it to me in thanks for making this for him: https://photos.app.goo.gl/7RendC8bSgTEQFd3A
04:56 PM andypugh: Making steering linkage balls on a manual lathe was too much fun for him to cope with :-)
04:57 PM * JT-Shop just looked at mcmaster and ouch is is expensive
04:57 PM JT-Shop: nice finish on that part
04:59 PM andypugh: A vers.by probe is €107 / $122. Which buys 180mm of the 45mm dia PEEK bar I used. So I exaggerated…
05:03 PM JT-Shop: for the first time in months I have 5 nice sized deer at the feeder
05:04 PM Tom_L: cool
05:04 PM JT-Shop: over here you would have to buy 1' of 2" at $250
05:05 PM JT-Shop: I take that back they offer shorter pieces you can get a 6" piece for $215
05:06 PM JT-Shop: I will turn up the time on the spinner tomorrow and put out some deer food
05:21 PM Bleepshop: andypugh: You in the US? If so I may try and ship you a smallish block of Acetron GP for the forum posts that got my VFD mostly there.. I've got some drops from some 1" or 1-1/4" in the 3"x8" range.
05:22 PM JT-Shop: he's in the UK
05:22 PM JT-Shop: failed chicken yard camera is full of tiny ants... they came alive when warmed up
05:22 PM XXCoder: andypugh: nice
05:23 PM Bleepshop: JT-Shop: Yeah, I hate it when Nature takes advantage of the heat in the shop to try and invade. LOL
05:25 PM Bleepshop: Note to self: Shake the new supergllue tube to get it away from the top before piercing the seal at this altitude.
05:26 PM Bleepshop: I just had an entire 3g tube eject it's contents and I just missed wearing them.
05:36 PM JT-Shop: it's my fault for bringing them inside, I assumed they were dead when I found the base full of them
05:36 PM JT-Shop: well all the hens are on the roost
05:40 PM Bleepshop: JT-Shop: So tomorrow the new heater will have always been there and you won't be able to tell them any different? ;D
05:42 PM Bleepshop: I know how chicken brains work... I've been dealing with residents of Santa Fe for years... LOL
05:43 PM JT-Shop: yeah, they already think they have always been there I think
05:43 PM JT-Shop: no fuss no muss
05:48 PM JT-Shop: hmm I left a window partly open... need to close that before going inside
05:53 PM JT-Shop: all the hens have started cold night sleeping and heads have disappeared
07:31 PM enleth: what would be the most likely reason that some 7i77 field outputs are high when 7i77 is powered and connected to a 6i25 in a running PC, but lcnc is not running?
07:35 PM enleth: they turn back off as soon as linuxcnc starts up *and* is switched to machine on
07:35 PM enleth: they switch *on* again on machine off/software e-stop
07:37 PM Bleepshop: enleth: Can you tell it to invert the output states at shutdown?
07:38 PM enleth: I was thinking about it, but there seems to be a more fundamental issue
07:39 PM Bleepshop: JT-Shop: WTH is the temperature there? It's 26F outside here and our's probably think they've died and gone to KFC... LOL
07:39 PM enleth: I'll check it with the screw terminals disconnected completely in a sec, just to be 100% sure it's not being backfed from the machine (although I don't see how it could do that)
07:39 PM enleth: but if that's not the case, I'm getting this on cold boot, with linuxcnc/hal having never ran on that powerup
07:40 PM enleth: 6i25/7i77 don't have any persistence whatsoever, do they?
07:40 PM Bleepshop: enleth: You'd be surprised, but hopefully not shocked when you find the issue?
07:40 PM enleth: all the outputs should start out off and stay off until hal runs, loads the hm2_pci driver and actually tells the card to do anything, right?
07:40 PM pcw-home: How are you sensing 'on'
07:41 PM pcw-home: If the outputs drive a load when linuxCNC if not running, the driver chip is bad/damaged
07:41 PM Bleepshop: OK... 7I77 is just a breakout, let me check the 6I25
07:42 PM enleth: pcw-home: an OMRON LY2 24VDC relay (with flyback diode) connected between the said output and ground closes as soon as I provide 24VDC on field I/O VIN and I can measure 24VDC on the coil terminals
07:42 PM enleth: again, cold boot
07:43 PM pcw-home: Bad driver chip
07:44 PM Bleepshop: enleth: Are you using the 5V option on the 6I25 ?
07:44 PM enleth: Bleepshop: heck if I remember
07:46 PM pcw-home: If the red led on the 7I77 is on, all field outputs should be off
07:46 PM Bleepshop: Clarification. Are you using the power feeder option on the 6I25 to feed 5V to the 7I77?
07:47 PM * flyback bites enleth
07:47 PM snakedLX is now known as snaked
07:47 PM pcw-home: If this is not the case, its most likely a driver chip is damaged
07:47 PM enleth: Bleepshop: yes, I think so, the non-field-I/O part lights up as soon as the PC is powered
07:48 PM enleth: pcw-home: OK, I just noticed the outputs are on all the time even when I thought they actually do turn off when linuxcnc is up and running - turns out, I never noticed thanks to the relay-based safety interlocking in the machine - and the voltage they output is slightly lower than what the other outputs provide to identical relays
07:49 PM Bleepshop: enleth: Pull the data cable between the 6i25 and the 7i77 and see if it still does it on boot.
07:49 PM enleth: Bleepshop: no data cable, just field VIN - so no control whatsoever, right?
07:50 PM Bleepshop: enleth: Right.
07:51 PM enleth: ok, the red LED is on, 7i77 gets no power other than field VIN, the non-field side is dark, two affected outputs still on
07:51 PM enleth: all clear
07:51 PM enleth: now I just need to figure out what caused this, I was sure OMRON LY2 with a diode would be fine for the outputs
07:53 PM Bleepshop: enleth: Oh dude, I toasted a pair of 40A Fosteks last night with a 10W inductive load. Saw them both blow. Thought the first one was a fluke and replaced it. POP!
07:53 PM pcw-home: With diodes, a 350 mA load is fine. But there can be no additional switching (either in series with the outputs or in field power)
07:56 PM Bleepshop: I can't read the chips in hte MesaNet pic so I have no clue which of several chips they're using.
07:56 PM pcw-home: It could be a bad part (I have seen a couple other explainable random failures of this type)
07:56 PM enleth: pcw-home: is a pushbutton in parallel to an output (to manually force the relay on) fine? not the case here, but I'm considering that for another output
07:58 PM enleth: hm, LY2 24VDC is 36.9mA, 3.2-5.7H inductance, that doesn't seem to me like something that should have fried those outputs
07:58 PM Bleepshop: enleth: Sounds like you have a bad driver.
07:58 PM pcw-home: I worry a bit about parallel buttons because they cause picosecond risetimes
08:00 PM enleth: eh, I can use different outputs for now, plug the two terminals with a piece of red filament or whatever to remember not to use them
08:00 PM enleth: but I'll probably have to fix it sooner or later
08:00 PM Bleepshop: enleth: 10W @ 110V = 0.090909A on an air solenoid. The kickback from that fried the 40A SSRs.
08:01 PM pcw-home: Mesa can repair the card (also the part is EOL but we have a large stock)
08:01 PM Bleepshop: Didn't even think about the diode because of the orders of magnitude between the device ratings.
08:04 PM enleth: Bleepshop: in my experience, Fostek SSRs die when you so much as look at them funny and do it in such a way that you wonder if the factory accidentally subcontracted a fireworks manufacturer instead of a semiconductor fab
08:04 PM Bleepshop: pcw-home: What's your opinion of the 7c81? And when will IDC26<>DB25 cables be back in stock?
08:04 PM enleth: pcw-home: I'm in the EU, so that's not really an option - does EOL in this case mean they're actually no longer in stock at big vendors?
08:05 PM Bleepshop: enleth: Suggestion. Check your diode. Chinesium is everywhere these days.
08:06 PM enleth: Bleepshop: the one on the relay controlled by that 7i77? it's been in the machine since 1982, when TEXTRON UK assembled it
08:06 PM * roycroft would appreciate if folks could try to not use ethnic/nationality/racial slurs here, even when not intended as slurs
08:07 PM Bleepshop: enleth: I'll just saw the dead ones open, regut them with better parts and pot them shut again. I've got everything but the epoxy to re-seal them. LOL
08:08 PM pcw-home: Yes no longer in stock (there was supposed to be a last time buy but that got canceled like a lot of things in the current Chipaggedon)
08:08 PM Bleepshop: And I've been wanting to try a slotting saw on a mandrel for something else.
08:09 PM enleth: pcw-home: then I suppose I'll ask you guys to throw in one or two to my next order, whenever that would be
08:09 PM pcw-home: 7C81 is OK if you can live with the RPI4 environment
08:09 PM Bleepshop: roycroft: Fine, From now on I'll call it 'Craptonite'. ;D
08:10 PM enleth: I can live without two outputs, as long as more of them don't fail
08:10 PM pcw-home: Yes that's the best way, otherwise shipping costs are crazy
08:10 PM pcw-home: Is this a new card? (under warranty?)
08:11 PM enleth: I bought it way back in 2015 or 2016, so I guess the answer is "hell no"
08:12 PM enleth: perhaps I never noticed those two were duds from the very start (again, I was lucky with the machine's existing safety interlocks), no way to tell now
08:12 PM Bleepshop: pcw-home: I don't have a problem with RPI. I'm a longtime user of 'ssh -X'.
08:12 PM pcw-home: Hint, when repairing, use a heat shield (foil, PCB material etc) to protect the green headers
08:12 PM enleth: I have some seriously thick aluminum foil and kapton tape for that
08:13 PM Bleepshop: HVAC foil tape. Works a treat.
08:13 PM pcw-home: Thats a good idea
08:14 PM Bleepshop: pcw-home: I'm full of them on the right days and medications. LOL
08:16 PM Tom_L: what are you full of on those other days?
08:17 PM pcw-home: I think the main issue with the RPI4 is you run into issues if you are trying to use the latest GUIs
08:17 PM roycroft: he's probably mostly full of water, like the rest of us
08:17 PM Tom_L: how's your model coming along?
08:18 PM roycroft: it's a struggle
08:18 PM roycroft: but i'm making progress
08:18 PM enleth: roycroft: wasn't me, but "chinesium" is about the only such term I ever use and I fully intend to stop doing that the same instant Chinese manufacturers change their mindset, ethics and approach to customer requirements - as long as they're happy to knowingly produce stuff that is shit by design instead of letting he customer know that it's *impossible* to make it that cheap, I'm happy to call
08:18 PM enleth: the results "chinesium" - mind you, referring to the nationality, which is not something one is born into for life, it can be disavowed or formally changed
08:19 PM Bleepshop: roycroft: So you've got enough caffeine, nicotene and THC in your system that teh last mosquito to bite you took off humming a Bob Marley tune and then went to Warp leaving some wings fluttering down as well? ;D
08:19 PM roycroft: enleth: i cannot stop you from using discrimantory language, and this is not the venue to debate it
08:19 PM roycroft: i've stated my wish
08:19 PM enleth: roycroft: there's not even a slightest shred of a fuck given by them about what they make, I at least gave it some thought
08:20 PM enleth: roycroft: tl;dr I don't consider it discriminatory in that particular case
08:21 PM Bleepshop: enleth: Actually there were a shitload of fake Fosteks and they gave it thought... "How many can we make before we get caught?"
08:21 PM roycroft: i have some well-made goods made in china, and have had excellent customer service from those vendors, and i have had utter crap as well
08:21 PM roycroft: the same as with us-made goods
08:22 PM Bleepshop: Amazon and eBay were flooded with them a few years back.
08:23 PM roycroft: it is discrimatory if you ascribe motive and quality to a product based only on its nation of origin, and not on its own merits, which is exactly what you're doing
08:25 PM enleth: roycroft: but there is a very significant connection between that and this specific nation of origin, due to cultural and political factors - the business culture cultivated by the state makes it so
08:25 PM roycroft: i think i've made my position clear
08:26 PM _unreal_: so this is really freaking me out....
08:26 PM roycroft: please disengate
08:26 PM Tom_L: take it to pm if you care to continue this unsolvable discussion
08:26 PM roycroft: disengage
08:26 PM Bleepshop: I thought it was the chemical element that made part make it out the door and 5 minutes into use before failing with little to no use?
08:26 PM _unreal_: I'm eating a very small plate of sweet/garlic sausages. and the garlic tastes like salt?
08:26 PM Tom_L: _unreal_, clear sign...
08:26 PM roycroft: have you been tested yet, _unreal_?
08:27 PM _unreal_: so I tried eating something else that was a known garlic and it tastes like salt? everything else tastes normal
08:27 PM _unreal_: sooo weird
08:27 PM _unreal_: roycroft, yes STREP THROUGH
08:27 PM roycroft: get tested again
08:27 PM _unreal_: oh is it WRONG
08:28 PM _unreal_: keep going to ya get the right answer
08:28 PM roycroft: yes
08:28 PM roycroft: and the right answer is the truth
08:28 PM roycroft: which has nothing to do with politics or tribalism or baseless beliefs
08:28 PM * Bleepshop notes that Covid shares marked similarities with Chronic Cubicle Syndrome... ;D
08:28 PM roycroft: it has only to do with what is actually real
08:29 PM roycroft: what can be demonstrated dispassionately using scientific principles
08:29 PM _unreal_: they did a though culture you know the OLD 8" cuetip to the back of the though and swabbed a dish. and CLEAR as day 2 hours later
08:29 PM _unreal_: strep
08:29 PM roycroft: strep is a serious disease
08:29 PM roycroft: but i hope that's what it really is
08:30 PM Tom_L: you're far enough away i doubt you'd catch anything from him
08:30 PM roycroft: i'm not concerned about that
08:30 PM Bleepshop: _unreal_: On the plus side you've got a doctor's note the next time the boss wants his ass kissed. LOL
08:31 PM _unreal_: considering its stage I'll prob back to work tue. wed..
08:31 PM _unreal_: likely wed.
08:31 PM roycroft: tom_l: my new method of "projecting" hole positions was working fine
08:31 PM roycroft: until i needed to project some blind holes from behind the part where i need to make aligned holes
08:31 PM Bleepshop: _unreal_: Just tell him "You can see what this is doing to my throat, do you really want it on your ass?" ;D
08:31 PM roycroft: i'm still trying to get that sorted
08:32 PM _unreal_: they gave me a really small perscriptions of amoxicillin
08:32 PM Tom_L: catia will generally show the centerline when trying to do that constraint no matter where it is
08:33 PM Bleepshop: roycroft: Doweling plugs. https://www.ebay.com/itm/203694036553?chn=ps&norover=1&mkevt=1&mkrid=711-213727-13078-0&mkcid=2&itemid=203694036553&targetid=4580496732614414&device=c&mktype=&googleloc=&poi=&campaignid=418233788&mkgroupid=1230353745471221&rlsatarget=pla-4580496732614414&abcId=9300542&merchantid=51291
08:33 PM roycroft: that's what i'd like to see, but i'm not seeing it at all
08:33 PM _unreal_: btw ROY.... the amoxicillin is what has messed up my taste.. and its only so far seems to be effecting garlic
08:33 PM Bleepshop: roycroft: CAD or real parts?
08:33 PM roycroft: when i do it the other way - projecting an existing hole onto a mated part - solidworks will show an outline of the new hole, and will project a small 'x' on the mated part
08:33 PM roycroft: i can click on the x to locate the hole
08:33 PM Tom_L: Bleepshop, how to import that to cad?
08:34 PM roycroft: but it's not working out that way when i'm trying to project from underneath the surface where i need to make the holes
08:34 PM Bleepshop: Tom_L: Export it from Blender as a .dxf or .step file?
08:34 PM Bleepshop: xD
08:36 PM roycroft: what is really frustrating is that this is an operation that folks must do every day - it has to be one of the most common operations - yet none of my several soldworks books discuss a method of doing it at all, and i've found very few online resources that address it
08:36 PM Tom_L: i'd be lost to try to help by looking at it since it's been so long since i've messed with sw
08:38 PM roycroft: the traditional technique would be to locale the parts in the assembly, which i've done
08:39 PM roycroft: then measure the hole offsets from the edges of the part that needs new hole to the hole locations on the mated parts
08:39 PM roycroft: create some constructions lines to set up a a hole center grid
08:39 PM roycroft: then create the holes on the new part, anchoring them to the grid intersections
08:40 PM roycroft: and i can do that, but it's a lot of work
08:40 PM Tom_L: i seldom draw parts in the assembly workbench
08:40 PM roycroft: i usually create parts individually, and then combine them in an assembly
08:41 PM Tom_L: i can copy features from one to the next if i need them
08:41 PM roycroft: but where i need to attach one part to another with some screws, i need to make holes that align
08:42 PM roycroft: for parts i draw from scratch, there is a mechanism to make the holes in the assembly, yet have them saved to the individual parts
08:42 PM enleth: pcw-home: utsource claims they have NCV7608DWR2G in stock - they're weird and somewhat shady, but I know a company that actually is using them now to supply some STM32s no one else could get and they did receive their shipments
08:42 PM roycroft: but when i am importing third-party drawings of parts/subassemblies, the holes are already there
08:42 PM roycroft: and that's where i'm having difficulty in making aligned holes in the mating parts
08:44 PM enleth: pcw-home: it doesn't help that they claim it's SOP28, which according to the datasheet isn't a thing for this part - but I might try ordering anyway, no big loss if it turns out to be a wrong part
08:44 PM Tom_L: roycroft, importing with iges or something or as a solidworks part?
08:45 PM roycroft: right now, as solidworks parts
08:45 PM roycroft: but i've tried .x_t and .step as well
08:46 PM Tom_L: i should get motivated to do my practice drawings or something again in sw to refamiliarize myself with it
08:46 PM roycroft: the format of the imported part should not matter, because on cannot always control the source of the imported parts
08:46 PM Tom_L: i know sw iges isn't that good
08:46 PM Tom_L: at least for export
08:47 PM Tom_L: alot of features get thrown out in space and you have to relocate them
08:49 PM Tom_L: at least that's my experience importing to my cad cam
08:49 PM Tom_L: catia does a better job with iges on that
08:50 PM roycroft: parasolid (.x_t and .x_b) are probably the best non-native formats to import to sw
08:50 PM Tom_L: ironically my older cad cam imports better because the newer one converts everything to a polyline
08:51 PM Tom_L: that's why i keep them all loaded :)
08:58 PM roycroft: i'm willing to take more time getting this done if it means i i'm learning/discovering techniques to do it better
08:59 PM roycroft: this project is as much about my getting more comfortable with solidworks as about getting the job done
09:01 PM Tom_L: i'd be more inspired to help if i had a need for sw but i generally turn to catia first
09:02 PM Tom_L: it would simply be for the knowing how for me
09:02 PM roycroft: because i figure if i spend the next six months really learning solidwork well, as soon as that time is done the freecad folks will announce their choice of an official assembly workbench and put out a new major release, so that i'll turn to that instead :)
09:02 PM roycroft: i actually found a resource that might be helpful
09:03 PM Tom_L: what ver are you running? 13?
09:03 PM roycroft: a professor at the university of maine published a series of videos on youtube
09:03 PM roycroft: freecad?
09:03 PM Tom_L: sw
09:03 PM XXCoder: 0.13 freecad is a nightmare. bury that files in a hurry heh
09:03 PM Tom_L: i don't have freecad on my pc anymore
09:03 PM XXCoder: sadly I had to start learning on 0.13
09:04 PM roycroft: sw2012
09:04 PM roycroft: for freecad, 0.19.something is the most recent version i have
09:04 PM XXCoder: 0.19 is decent, 0.20 is even better
09:05 PM roycroft: anyway, the umaine stuff looks good, and i found that he also published most of his course materials online
09:05 PM XXCoder: im just waiting for stable release because I dont use it that often
09:05 PM roycroft: his course looks like it's a lot more practical than most of the books i have and the videos i've seen
09:05 PM roycroft: i don't know if he goes over how to line up holes though - i haven't checked out that part of the course yet
09:06 PM Tom_L: i generally do a face to get the planes aligned then centerlines
09:06 PM Tom_L: sometimes a common edge if it's important enough
09:07 PM roycroft: i don't like how solidworks handles construction lines
09:08 PM Tom_L: i don't remember much about that
09:08 PM roycroft: if i draw a construction line on a plane, i'd like to be able to reference it from other planes in an extruded part, or from a mated part, but i can't find a way to do that
09:09 PM roycroft: which really sucks
09:15 PM Tom_L: i noticed sw has 'centerline'
09:16 PM Tom_L: would that help align the blind holes
09:33 PM Tom_L: roycroft, does sw have a contact constraint? or is it an offset of zero?
09:38 PM roycroft: it has coincident contraints
09:38 PM Tom_L: i guess it's called 'lock' ?
09:38 PM roycroft: and they can be offset as well
09:39 PM Tom_L: coincident in catia is generally for centerlines etc but i suppose it could work for planes too
09:39 PM roycroft: i'm doing pretty well with mates, generally - i starte using some advanced mates (by solidwork's definition), and that's made things go a lot easier
09:40 PM roycroft: i'm about to head out of the office for the evening
09:40 PM roycroft: i've been in here much of the day, and just finished a rather difficult board zoom meeting a few minutes ago
09:41 PM roycroft: i need to walk away from this stuff for a while
09:41 PM Tom_L: how do you get the assembly to come together?
09:41 PM Tom_L: i forget
09:42 PM roycroft: typically i'll first do a coincident mate of the surfaces of the two parts
09:42 PM roycroft: when a part is centered on another, i'll then do a width mate
09:42 PM -!- #linuxcnc mode set to +v by ChanServ
09:42 PM roycroft: when it's not centered, i'll do a concident mate of the sides, with the appropriate offset
09:43 PM Tom_L: ok i see if i select the planes first then click mate it does it on it's own
09:43 PM roycroft: when the parts align along the edges, i'll do a coincident mate of the edge surfaces
09:43 PM Tom_L: some of them are called something else in catia
09:43 PM roycroft: it usually takes three mates to fully define a part's location on the assembly
09:43 PM roycroft: i wonder if i can easily show you what i'm doing
09:44 PM Tom_L: i noticed on the holes, it doesn't show centerlines
09:44 PM Tom_L: i'm not gonna be at it much longer tonight
09:50 PM roycroft: this may be hard to see, but i think you can figure it out
09:50 PM roycroft: roycroft.us/Mates
09:50 PM roycroft: they're numbered in the order i make them
09:51 PM roycroft: the purple surface is the base part
09:51 PM roycroft: the orange outline is the mating part
09:52 PM Tom_L: first one joins the plate to the trucks
09:52 PM roycroft: yes
09:52 PM Tom_L: 3rd one mates the ends to the plate ends
09:52 PM roycroft: yes
09:52 PM Tom_L: 2nd one spaces them apart
09:52 PM roycroft: yes
09:52 PM Tom_L: that's not hard
09:52 PM roycroft: and that seems a good way of doing the mates
09:52 PM roycroft: the bearing blocks have tapped mounting holes on the bottoms
09:52 PM roycroft: that's what i'm having trouble with
09:52 PM Tom_L: unless you didn't want the trucks right on the edge
09:52 PM Tom_L: then you'd do an offset mate
09:53 PM roycroft: i need to make holes in the plate to line up with those
09:53 PM roycroft: yes, that's what i did on the sides
09:53 PM roycroft: i just used an offset of 0.875"
09:53 PM Tom_L: so you don't have plate holes yet but want them to align with the truck holes
09:53 PM roycroft: correct
09:53 PM Tom_L: unless because of the imported parts that should be easy
09:54 PM roycroft: that's what i think
09:54 PM Tom_L: i have those truck models but not sure what format
09:54 PM roycroft: but i can't find an easy way to do it
09:54 PM Tom_L: and i can draw a plate easy
09:54 PM roycroft: the best i've come up with is to measure the hole distances
09:54 PM roycroft: draw construction lines on the plate
09:54 PM roycroft: and then locate holes where the construction lines intersect
09:55 PM roycroft: which is very tedious, prone to error, and unmaintainable
09:55 PM Tom_L: i did a blind hole using the centerpoints of the holes a bit ago
09:55 PM Tom_L: that seemed to be what you were struggling with
09:55 PM roycroft: i can't find a way to make the plate see the locations of the bearing block holes at all
09:55 PM roycroft: yes
09:55 PM Tom_L: lemme see if i have a truck i can import
09:56 PM roycroft: if i could locate a centerpoint on the plate then making the holes would be easy
09:56 PM Tom_L: i'm not sure where i put them
09:56 PM Tom_L: what format did you get yours in?
09:58 PM CaptHindsight[m]: This package provides interfaces to Machinekit HAL from ROS.
09:58 PM CaptHindsight[m]: https://github.com/tormach/hal_ros_control/tree/foxy-devel
09:58 PM Tom_L: ok i found a linear rail..
09:59 PM Tom_L: haha i have those in sldprt format too
10:00 PM Tom_L: ok i found the trucks
10:00 PM roycroft: it's a solidworks assembly
10:00 PM Tom_L: i know that
10:00 PM roycroft: https://roycroft.us/Mates/Z-Azis-Spindle-Mount-Assembly.png
10:00 PM roycroft: that was straightforward to do
10:00 PM Tom_L: i was just trying to find my truck models
10:00 PM roycroft: the spindle bracket is mated to the plate
10:00 PM roycroft: i added the holes to the bracket
10:01 PM roycroft: then i was able to project them down to the plate
10:01 PM roycroft: and they line up perfectly
10:02 PM roycroft: but on the other assembly i need to "pull" the hole locations up through the plate, and not "push" them down to it
10:03 PM Tom_L: i get what you want
10:03 PM roycroft: solidworks does things a lot like autocad
10:04 PM roycroft: when i'm adding a dimension in autocad, i can hover over an interesection or other snap point, and then "pull" that position in either x or y to where i want to locate the dimension leader
10:04 PM roycroft: when i am projecting holes down, i do something similar
10:05 PM roycroft: i hover over the hole bore, and then i move the mouse down, and a little 'x' is projected on the plate below
10:05 PM roycroft: if i click on the x it lines the hole up perfectly
10:05 PM roycroft: it just doesn't work going the other direction
10:05 PM roycroft: at least not that i've been able to figure out how to do
10:06 PM roycroft: and again, this seems like something that would be taught in day one of solidworks assembly instruction, but nobody seems to talk about how to do it
10:07 PM roycroft: if i could project a centerline up through those holes, and snap the new holes to the centerlines, that would be ideal
10:14 PM Tom_L: ok i did it
10:14 PM Tom_L: roycroft,
10:14 PM Tom_L: draw a sketch on the bottom of the plate
10:14 PM Tom_L: draw your circles random places
10:18 PM roycroft: i have walked away from that for a bit
10:18 PM Tom_L: it's very simple
10:19 PM roycroft: i don't know if i'll get back to it tonight
10:19 PM roycroft: but i need to use the hole wizard, not draw circles
10:19 PM roycroft: at any rate, continue with your explanation
10:19 PM Tom_L: it just took me a sec to find a truck and mount it to a plate
10:19 PM roycroft: i can draw points instead of circles
10:19 PM Tom_L: why do you need the hole wizzard?
10:19 PM roycroft: it has features that are desirable
10:20 PM Tom_L: you still have to constrain each one separately though
10:20 PM roycroft: if i tell it i want a 5/16" counterbore hole with close tolerance, it will draw the proper size hole, which will be larger than 5/16"
10:20 PM roycroft: and will do the counterbore to the correct depth
10:20 PM Tom_L: ok where do i find the wizzard?
10:20 PM roycroft: but please continue
10:20 PM Tom_L: i forgot
10:20 PM Tom_L: i'll go about it that way
10:21 PM roycroft: it's under features
10:21 PM roycroft: you select the plane in the assembly, edit plane, features, hole wizard
10:21 PM Tom_L: ok i have a truck constrained to a plate
10:21 PM Tom_L: select the bottom of the plate as the plane
10:22 PM roycroft: but as i said, your explanation about the circles will probably work with points instead of circles
10:22 PM roycroft: and i know how to snap a hole wizard feature to a point
10:22 PM Tom_L: i used circles to align them
10:22 PM Tom_L: not points
10:22 PM roycroft: the bottom of the plate meaning the surface that is mated to the trucks?
10:22 PM Tom_L: i'm in assembly, looking for the hole wizzard...
10:23 PM Tom_L: no the very bottom of the plate opposite the trucks
10:23 PM roycroft: ok
10:23 PM roycroft: great - that's where i need to be
10:23 PM Tom_L: i know
10:23 PM roycroft: click on the bottom of the plate
10:23 PM Tom_L: i did already
10:23 PM Tom_L: looking for the wizzard
10:24 PM roycroft: in the upper left should be "edit feature" or something similar
10:24 PM roycroft: when you click on that you should see the hole wizard
10:24 PM Tom_L: what tool bar is it on?
10:24 PM roycroft: sometimes you need to click on the plate again before the hole wizard shows up
10:25 PM roycroft: you have to select feature, not sketch
10:25 PM Tom_L: it want's me to save the assembly first
10:25 PM roycroft: if i were sitting in front of it right now i'd be able to walk you through it quickly
10:25 PM roycroft: if i'm honest, my brain is rather rattled right now
10:26 PM Tom_L: edit feature just brings up the extrude
10:26 PM Tom_L: i'll find it eventually
10:27 PM roycroft: i cannot get into the details of this board meeting, because they're confidential, but it was dealing with some extreme racism and threats of violence to the organization
10:28 PM roycroft: i just had to leave my office after sitting through a 2 hour meeting dealing with that
10:28 PM Tom_L: i found it
10:28 PM roycroft: good
10:28 PM Tom_L: what hole type would you like?
10:28 PM roycroft: i hope i did not lead you on a wild goose chase
10:28 PM Tom_L: we'll go with countersunk
10:29 PM roycroft: well for that part, i need an m5 countebore with a shcs
10:29 PM roycroft: countersunk will work too
10:30 PM roycroft: if you use solidworks, you should never make bolt holes with the circle tool
10:30 PM roycroft: the hole wizard is always the way to go
10:35 PM Tom_L: depends if you want a pretty model or a part you can put tools to
10:35 PM roycroft: well if you want to make blueprints you should use the hole wizard
10:36 PM roycroft: if you need a 5/16" tapped hole and you draw a 5/16" circle and extrude it, when you generate the drawing and do the hole callout it will just show a 5/16" hole
10:36 PM Tom_L: catia doesn't show threads on a tapped hole anyway
10:36 PM roycroft: if you use the hole wizard then when you do the hole callout it will show the correct size tap hole, and also annotate that it's a 5/16-18 hole
10:36 PM Tom_L: but you can define it as such
10:37 PM Tom_L: takes HP to draw
10:37 PM roycroft: yes, you can suppress the actual threads in sw as well
10:37 PM roycroft: but with the hole wizard you don't have to know or look up the tap hole size for a fastener
10:37 PM roycroft: and if it's a counterbore hole you don't have to know or look up the diameter and depth of the couterbore
10:38 PM roycroft: you just tell it the fastener specifications and it does all the work
10:38 PM roycroft: it's not there to make things pretty - it's there to save a lot of work and potential errors
10:39 PM roycroft: except it's kicking my arse right now ;)
10:39 PM Tom_L: the hole wizzard creates a profile and does a shaft for the hole
10:39 PM roycroft: yes
10:47 PM roycroft: the deluge is beginning
10:48 PM Tom_L: i'll fiddle with it some more later on
10:48 PM roycroft: the wind has picked up and it is starting to rain
10:48 PM roycroft: we're suppsed to get 29mm tonight
10:48 PM roycroft: and 30+ mm every day for the next few days
10:51 PM roycroft: i take it you could not do it with the hole wizard as easily as you did when drawing circles
10:51 PM Tom_L: i have an idea though but you may not like it
10:51 PM Tom_L: because the wizzard construction will not be able to be constrained to the mating part
10:52 PM Tom_L: however if you draw the circles on a sketch and constrain them, then you can use the wizzard and constrain them to the circles
10:52 PM roycroft: it is when i do it from the other end
10:52 PM roycroft: i.e. the way i did it on the z axis assembly
10:52 PM Tom_L: even if you don't extrude the circles
10:52 PM roycroft: it creates an "invisible" coincident link to the mated part
10:53 PM Tom_L: it's easy to constrain the circles to the mating part
10:53 PM roycroft: so how did you contrain the circles on the sketch?
10:53 PM Tom_L: then run the wizzard
10:53 PM Tom_L: lemme finish the steps and i'll post some pics
10:53 PM roycroft: ok, thanks
10:53 PM Tom_L: i need to get rid of these holes first
10:54 PM roycroft: and i could draw the circles for this assembly if i needed to
10:54 PM roycroft: but there are 16 counterbored holes on that one subassembly alone
10:54 PM roycroft: there will be dozens, if not hundreds, on the entire machine
10:55 PM roycroft: so i really want to use the hole wizard if at all possible
10:55 PM Tom_L: you won't be able to constrain them to a mating part with the wizzard due to the way it constructs them
10:57 PM roycroft: i could be ok with that
10:57 PM roycroft: as long as i can constrain them
10:57 PM Tom_L: takes about 10x as long since i'm not very familiar with sw
10:57 PM roycroft: sure
10:57 PM roycroft: and the hole wizard is kind of a wonky interface
10:57 PM Tom_L: i lost my sketch tool bar :)
10:58 PM roycroft: i have done that before
10:58 PM Tom_L: i've used it in catia
11:01 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/roycroft/step1.jpg
11:01 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/roycroft/step2.jpg
11:02 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/roycroft/step3.jpg
11:02 PM Tom_L: 1, draw some random circles on the bottom of the plate
11:02 PM Tom_L: 2, ctrl select the circle (not the center) and the circle of the mating part
11:03 PM Tom_L: 3, concentric mate
11:03 PM Tom_L: done
11:04 PM Tom_L: i literally threw the circles randomly on the surface
11:04 PM Tom_L: then did the constraint
11:04 PM Tom_L: sry... sw speak: mate
11:04 PM Tom_L: from there you have a sketch on the bottom plane to do your wizzardry
11:05 PM roycroft: you have the trucks upside down
11:06 PM roycroft: but i'm sure i can find how to select the circles on the undersides of them
11:06 PM Tom_L: well for this example that doesn't matter
11:06 PM Tom_L: i was trying to hurry and that's the way it imported
11:07 PM roycroft: well i appreciate your working it out for me
11:07 PM Tom_L: you can make the plate transparent can't you?
11:07 PM roycroft: i'll give it a go later tonight if i feel like going back into the office
11:07 PM Tom_L: so you can see the holes on the truck
11:07 PM roycroft: if not, i'll do it in the morning
11:07 PM roycroft: yes, that's easy to do
11:07 PM roycroft: i do wireframe views all the time
11:07 PM Tom_L: k
11:07 PM Tom_L: later
11:07 PM * roycroft doubts he'll want to step foot in the office again tonight
11:08 PM Tom_L: for that matter you could do the holes as construction lines
11:08 PM Tom_L: then they surely wouldn't interfere with anything
11:08 PM roycroft: and i'm almost certain it will work if i draw points and not circles on the plate
11:08 PM Tom_L: possibly
11:09 PM roycroft: i've done concentric mates of points to holes before
11:09 PM Tom_L: yes that works, i just tried it
11:10 PM roycroft: i almost want to do it right now, but i'm so drained from that meeting i just don't want to walk back into that room at all
11:10 PM roycroft: so i think i'll just watch the simpsons instead
11:11 PM roycroft: but i saved the pics you posted, and your narrative, so i can review in the morning if i forget what you did
11:11 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/roycroft/step4.jpg
11:13 PM roycroft: i've found solidworks snaps to some things a lot more easily than autocad does, but is a lot harder to snap to other things than with autocad
11:13 PM roycroft: i've learned to add points if i need to anchor things
11:14 PM roycroft: whereas in autocad i'd draw a horizontal and vertical construction line and always be able to snap to their intersection if i do the same in solidworks, sometimes i can snap to it and sometimes i can't
11:14 PM roycroft: but i can always add and anchor a point, and snap to that
11:15 PM roycroft: grr
11:15 PM roycroft: i just remebered that tomorrow is the public board meeting
11:15 PM roycroft: so another 2-3 hours of dealing with this crap
11:16 PM Bleepshop: Tom_L: Damn you're good. I should send you the specs for my new spindle mount plate. ;D
11:17 PM Tom_L: i'm no good with sw
11:19 PM Bleepshop: Tom_L: That's OK. My plan is to parallel block and transfer punch it.
11:21 PM Bleepshop: Or I may get really squirrelly, fire up the lathe and cut a piece of pipe as a spacer between the table and the spindle case and then work from there.
11:22 PM roycroft: i'm making my cnc router mostly out of aluminium
11:22 PM roycroft: that stuff is fairly soft
11:22 PM roycroft: i can just whittle it
11:22 PM Bleepshop: roycroft: Try 6061-T651
11:26 PM roycroft: well so much for the simpsons
11:26 PM roycroft: the fox channel was breaking up, and now it's gone
11:26 PM Bleepshop: he soft stuff is SO. The machine I have here is a tension box made of slabs of 3/8"[10mm] 6061-T651 for the table, 3/4" for the gantry risers and a 4"x4" box-beam for the crossbar.
11:26 PM roycroft: probably because of the wind storm
11:27 PM Tom_L: Bleepshop, that's mostly what i use for alum
11:27 PM Tom_L: may have some 70xx stuff
11:27 PM Tom_L: 651 is just age hardened
11:27 PM Bleepshop: I read the material specs off the underside of the tabletop. LOL
11:28 PM roycroft: cbs and nbc are gone too
11:28 PM roycroft: pbs and abc i can still get
11:28 PM Tom_L: around here most cutoff is going to be age hardened
11:29 PM Tom_L: iirc that was discovered somewhat by accident.. you should read about the history of aluminum
11:30 PM Bleepshop: Is it as exciting as the story of the guy that tried to weld a crack in an original Porche block? ;D
11:31 PM Tom_L: heh i dunno about that one
11:31 PM Tom_L: he probably chased the crack a good ways
11:31 PM Bleepshop: Yeah, he found out the hard way it wasn't aluminum. LOL
11:31 PM Tom_L: and the next one and the next...
11:31 PM Bleepshop: Magnesium engine block. >:)
11:31 PM Tom_L: oh
11:32 PM Bleepshop: Yeah... LMAO
11:32 PM Tom_L: well he probably had to find another one
11:32 PM Bleepshop: And patch a hole in the shop floor.
11:32 PM Tom_L: and that
11:32 PM Tom_L: and change his drawers
11:33 PM Tom_L: which porche?
11:33 PM Tom_L: 911?
11:34 PM Bleepshop: 356 IIRC
11:34 PM Tom_L: 256?
11:34 PM Tom_L: 4 cyl
11:34 PM Tom_L: those fit in a bug real nice
11:34 PM roycroft: weekend warriors used to do that with volkswagen engines/transmissions all the time
11:35 PM roycroft: aluminium and magnesium look almost identical
11:35 PM roycroft: but they behave so, so differently
11:36 PM Bleepshop: Porsche 356. Pre-1965.
11:36 PM Tom_L: yeah i guess it was 356
11:36 PM Tom_L: been too long
11:37 PM Bleepshop: Yeah, i've got several bus/Baja owners drooling over my car and the spare motor hoping some idiot will rear end me. Subaru EJ22/5-spd.
11:38 PM Tom_L: the 914 was a fire trap
11:38 PM Tom_L: injectors leaked
11:39 PM Tom_L: later..
11:39 PM Bleepshop: Later. I've still got 1/2 a shop floor to de-crap.