#linuxcnc Logs
Dec 15 2024
#linuxcnc Calendar
02:12 AM Deejay: moin
04:34 AM JT-Cave: morning
06:15 AM Tom_L: morning
07:25 AM _unreal_: just finished setting up a cad drawing with some mayan stuff.
07:25 AM _unreal_: plan is to mill a small stone chunk with it
07:25 AM _unreal_: :)
07:25 AM _unreal_: dont know how long it will take but it will be cool I hope
07:26 AM _unreal_: just have to pop the plate real quick put some caulking on the 2 inside screws put it all back down and yeeehaaa
08:13 AM _unreal_: and its done. 5200 to the 2 center holes
08:13 AM _unreal_: got my stone all jigged up. time to setup breakfast and wake the kid
08:13 AM _unreal_: :( m baby turns 16 next month
08:13 AM _unreal_: and she doesnt seem to have a desire to drive. its odd
09:17 AM anonimasu: Trick question, would is be posible to drive a DC motor with a mesa 8I20(if you close the speed loop externally)?
09:48 AM Tom_L: hey anonimasu what you been up to?
10:29 AM rdtsc_away is now known as rdtsc
11:09 AM _unreal_: so just did my first test with the new milling thing. and leaks like a sive. :(
11:09 AM _unreal_: I dont know what the real source of the issue is. but considering how I built it. there is a chance the first layers started to cure before I got the vacuum bag down. (fiberglass)
11:10 AM _unreal_: I had a huge problem trying to get the vac bag down. and didnt realize I had missed sealing an area. it was well hiddin and in plain site, 3 people including my self missed it
11:11 AM _unreal_: the issue is it seems like water i wicking through the carbon fiber layers. and that could also mean one of 2 things. pre curing before vac bag. also it could be that I pulled the bag too early. which I find odd because being VE resin I let it cure for 4 hours before pulling the bag. and I didnt de-mold it till the next day.
11:11 AM _unreal_: still
11:12 AM _unreal_: at this point I just sanded all the edges and corners, and put a beed of 5200. WISH I had fast cure
11:12 AM _unreal_: got it sitting in the sun and keep spritzing it with water from a spray bottle
11:13 AM _unreal_: around 1 ish? depending on if it has skinned over I'll try an other flood test and see if the box still leaks and if so from where
11:14 AM _unreal_: I may have issues with all the little FRP board standoffs as well. (I SHOULDNT) but its not out of the realm of impossible. not to mention the threaded holes do penitrate the box to the hard frp board on the under side of the box. which means it penitrates the carbon fiber material. :S if thats the cause I'll have to caulk everything. SIGH
11:15 AM _unreal_: sigh
11:15 AM _unreal_: I just wanted this stupid box to work
11:15 AM _unreal_: dont want to be screwing around with it
12:23 PM _unreal_: Ok just did a fill test and its been 5 min. I have found no water leaking. the inside edges sealing seems to have solved the leak
12:24 PM _unreal_: giving it a few more then I'm going to drain it set it back up on the machine and try milling again
12:40 PM -!- #linuxcnc mode set to +v by ChanServ
01:06 PM roycroft: so it's the front axle shaft that has failed
01:08 PM JT-Shop: photo?
01:10 PM roycroft: ipad is dead - i just started charging it
01:10 PM roycroft: i knew you would want a pic :)
01:11 PM Tom_L: cv joint?
01:11 PM Tom_L: photo? :)
01:11 PM roycroft: the ipad takes a long time to charge, though
01:11 PM roycroft: so it will probably be an hour or so before i have enough charge to take a pic
01:12 PM roycroft: i'm watching a youtube video on replacing the axle in the meantime
01:12 PM roycroft: i'm not sure yet what all is damaged - the brakes may be damaged as well
01:13 PM Tom_L: typically the cv boot cracks
01:13 PM Tom_L: then runs out of enough grease to keep it alive
01:15 PM roycroft: it's on the transfer case side of the u-joint
01:15 PM roycroft: the seal is totally blown
01:15 PM Tom_L: that sounds more serious than an axle bearing
01:19 PM roycroft: yeah
01:19 PM Tom_L: might have to pull it out to get to it
01:19 PM Tom_L: not something i'd want to do
01:20 PM roycroft: i hope there's no damage inside the transfer case
01:20 PM roycroft: otherwise this is a huge problem
01:20 PM roycroft: i need to pull the hub befor i know what's going on
01:20 PM xxcoder: your truck?
01:24 PM _unreal_: Ok milling away on stone still no signs of water leakas, milling happly
01:24 PM _unreal_: I'm getting 99.9% water and chip spray containment as hopped
01:24 PM _unreal_: water that escapes is ultra fine mist water that I really cant see
01:25 PM _unreal_: all in all VERY happy
01:25 PM _unreal_: when this test finishes I'm going to setup the stainless scrap I have
01:25 PM _unreal_: I'll use some 4 flute 1/8th HSS bits I have on the stainless
01:26 PM _unreal_: high RPM but slow feed plunge under flood
01:26 PM _unreal_: also I just remembered I have some cool little micro floats that I got from one of the luxury yachts some time ago. brand new never used. they have RJ11 headers on them and I believe do both NO/NC connections fingers crossed
01:26 PM Tom_L: high rpm + slow feed = work hardening
01:27 PM _unreal_: under flood?
01:27 PM _unreal_: the slowest RPM I can go is 8k ish
01:27 PM Tom_L: and that's why i got the spindle motor i got
01:27 PM _unreal_: I'm trying to find a compromize
01:28 PM _unreal_: My machine is mainly for material that has no issues with high rpm
01:45 PM roycroft: i was a little too early
01:45 PM roycroft: i got a picture taken, but the ipad shut down immediately after
01:45 PM roycroft: maybe i can email it while it's charging
01:47 PM roycroft: and my web server was also down, but it just came back online
01:48 PM * roycroft thinks he should go look for his needle scaler, so he can clean things up before pulling the hub and shaft
01:51 PM roycroft: https://roycroft.us/F350_Front_Axle.jpeg
01:52 PM roycroft: the view from the rear is a lot better, but i can't safely get in there yet
01:52 PM roycroft: the vehicle is just on a jack right now - i haven't put it up on blocks yet
01:52 PM * roycroft doesn't crawl under vehicles until they are properly supported
01:54 PM JT-Shop: that looks like a fun job
01:54 PM Tom_L: that bearing is probably pressed in
01:55 PM Tom_L: hopefully the inner seal kept any metal out
01:55 PM roycroft: i'm going to go as far as i can
01:55 PM roycroft: i may give up and have it towed to a shop in the end
01:55 PM roycroft: when i called aaa yesterday they authorized a retow
01:56 PM roycroft: from the videos i've watched it doesn't look like too bad a job, potentially
01:56 PM roycroft: until things go wrong, of course
01:56 PM _unreal_: monwell labor
01:56 PM _unreal_: to fix that
01:56 PM roycroft: that's easily a $1k repair
01:56 PM roycroft: if i have it done
01:57 PM roycroft: if i need a hub, it's $200 or so
01:57 PM roycroft: and an axle shaft is about $150
01:57 PM roycroft: i think it's worth having a go at it myself before paying for it to be done
01:58 PM Tom_L: i doubt the axle stub is bad, it looks like the bearing gave out
01:58 PM roycroft: yeah
01:58 PM roycroft: i'll find out when i get it pulled
01:58 PM roycroft: my biggest concern is the abs sensor
01:58 PM roycroft: that thing is expensive, and folks say it breaks a lot when trying to remove it
01:59 PM Tom_L: there's a good chance the inner seal didn't fail too because it's not exposed to the elements
01:59 PM roycroft: if nothing inside the front differential is damaged i think i'll be ok
01:59 PM roycroft: the hub lock might be toast
01:59 PM roycroft: from the pounding of the axle as it got loose
02:00 PM roycroft: although i just had it in 4wd a week ago and it was fine
02:00 PM Tom_L: jt likes crawling around under cars... invite him over for pizza
02:00 PM roycroft: that's the thing - i had no pulling, no ticking, no noises or any signs of damage
02:00 PM roycroft: it just went out all of a sudden
02:00 PM roycroft: a week ago it was fine
02:00 PM roycroft: yesterday it blew up
02:01 PM skunkworks: https://photos.app.goo.gl/DQPBK5adScKtMNHx6
02:01 PM roycroft: but what the videos show is that i disconnect the tie rod, pull the hub lock, pull the brake assembly, pull the hub, then i can pull the shaft out
02:01 PM roycroft: maybe not too bad
02:01 PM roycroft: maybe a total pain in the butt
02:02 PM Tom_L: skunkworks, jt will approve... it's blue
02:02 PM roycroft: my jack stands are in use at the moment
02:02 PM roycroft: so i'm going to have to find some other cribbing to support the front of the vehicle while i work on it
02:03 PM skunkworks: llol
02:03 PM roycroft: and i think i need to pick up the whole front end, so i can easily turn the steering wheel for better acces
02:04 PM Tom_L: you shouldn't have to crawl under it too far
02:04 PM * roycroft decides to get some lunch and search for some cribbing
02:04 PM JT-Shop: skunkworks, nice
02:04 PM roycroft: i shouldn't
02:04 PM skunkworks: Thanks... Now to find enough fittings to make this all work
02:04 PM roycroft: but i may have to bang on it or use significant leverage
02:05 PM roycroft: i'm still not going to crawl under it while it's on a jack
02:05 PM JT-Shop: I've used cross stacked 4x4's for cribbing and it's very stable
02:05 PM roycroft: yeah, i'm thinking about that
02:05 PM roycroft: i have some 4x4s in the back yard
02:05 PM roycroft: i need some of them for railing for my back steps
02:05 PM roycroft: but i may have enough to cut up for cribbing
02:05 PM roycroft: i figure 18" long pieces will be fine
02:06 PM roycroft: actually, 12" lengths would probably be fine
02:06 PM roycroft: that's a heavy vehicle
02:06 PM Tom_L: on concrete? if the drive is stable
02:06 PM roycroft: my jack is 3 ton, and it's always worked well for me
02:06 PM JT-Shop: yup 12" will be plenty
02:06 PM roycroft: but it struggles with picking up the front end of the f350
02:06 PM roycroft: it's gravel, tom_l
02:06 PM roycroft: but well-compacted
02:07 PM JT-Shop: even more a reason to use 4x4's
02:07 PM Tom_L: you've had rain lately too
02:07 PM roycroft: so i guess i'll get some lunch, make some cribbing, and then start disassembling
02:07 PM roycroft: my goal today is to figure out what parts i need
02:07 PM roycroft: yes
02:07 PM roycroft: and i went to the old shop and grabbed an ez-up yesterday
02:08 PM * JT-Shop started painting the lower control arm but forgot to weld the square nut back on...
02:08 PM roycroft: it's sunny today, but i can't count on that until the project is complete
02:08 PM roycroft: in fact, the rain is forecast to return tomorrow
02:09 PM roycroft: my new laser goggles arrived yesterday - the new ones filter both 450nm and 1064nm
02:09 PM roycroft: i was hoping to spend some time today testing the new laser head (which finally arrived, after multiple back and forth trips between eugene and portland)
02:09 PM roycroft: but i guess that waits until next week
02:10 PM Tom_L: unless you farm this job out
02:10 PM roycroft: even if i do, i will be spending the afternoon tearing it apart
02:10 PM roycroft: but it's lunch time right now
02:10 PM * roycroft lunches
02:22 PM * JT-C3_Shop will need a beer before changing the cyl on the welder as there is quite a bit in the way
02:41 PM _unreal_: ok stone milling done, got the results I was hoping for. no wear on the diamond bit
02:41 PM JT-C3_Shop: used a paint ball tank and got it done and primed
02:42 PM roycroft: well, i don't have spare 4x4s after all, but i have plenty of 2x4 pieces that i can cut up for cribbing
02:42 PM roycroft: that will work just as well, but will be twice as much work
02:43 PM * roycroft will get to that after lunch (which is almost ready)
03:16 PM * JT-C3_Shop is running out of Moog parts on the table saw
03:21 PM Tom_L: that's a good thing
04:00 PM * JT-Shop thinks about installing the upper control arm...
04:06 PM roycroft: it's definitely the wheel bearing(s)
04:07 PM * roycroft has the brakes off and the hub lock off
04:07 PM JT-Shop: that's good
04:07 PM roycroft: i also can't find my big snap ring pliars
04:07 PM roycroft: pliers
04:07 PM roycroft: so i have to make a trip to town to get some before i can get the hub off
04:07 PM roycroft: i had a feeling i might need a trip in before i got this done
04:07 PM roycroft: besides for parts
04:07 PM JT-Shop: it never fails
04:08 PM roycroft: if i go right now i'll have a half hour of daylight left when i get home, which should be about what i need to finish the teardown
04:08 PM * roycroft goes right now
05:46 PM rdtsc: Lookin' good SW. Is that a giant log splitter attachment? :)
05:46 PM rdtsc: Hope it all turns out well Roycroft
05:50 PM rdtsc: on the up-side, a lot of those nuts have been pre-lubed so that should help disassembly :)
06:19 PM roycroft: well, it's too dark for any more pictures, but i can find artifacts of bearings, and nothing more
06:20 PM roycroft: the hub is trashed, so i'll be replacing that, at the very least
06:20 PM roycroft: nothing like driving 50 minutes, running into a store for a tool, driving 50 minutes, then using the tool for 5 seconds to get the job done
06:26 PM roycroft: the wheel side of the axle looks ok at first glance
06:26 PM roycroft: i'm not going to get the axle pulled today, though, so i don't know what's going on inside
06:51 PM rdtsc is now known as rdtsc_away
07:36 PM xxcoder: amaze
07:37 PM xxcoder: I just got my soylent order delivered
07:37 PM xxcoder: it showed nice picture of box by blue house door
07:37 PM xxcoder: problem is my home arent blue
07:40 PM skunkworks: ugh
07:40 PM xxcoder: 99% of time all delivers is just fine
07:40 PM xxcoder: this is first one of year, and its dec lol
07:46 PM skunkworks: I have not tried a delivery service yet...
07:52 PM xxcoder: never ordered stuff in?
09:41 PM _unreal_: so after a bunch of testing. IMO my machine will not handle stainless reasonably
09:42 PM _unreal_: I'm sure there is a fine balance but in reality BLAA its just not really able
10:11 PM Tom_L: kinda saw that coming
10:12 PM xxcoder: stainless is quite hard material to machine
10:12 PM Tom_L: not if you play by the rules
10:13 PM xxcoder: man I hated stainless steel jobs
10:13 PM Tom_L: i ran some lathe parts and didn't have any trouble
10:13 PM Tom_L: not much on a mill
10:14 PM xxcoder: I only very rarely ran lathe
10:14 PM xxcoder: manual mill only exactly once across 5 years
10:16 PM xxcoder: lathes work hmm I would say 15 times? across 5 years
10:16 PM xxcoder: I have no idea how many times I worked on mill machines lol virtually everyday
10:17 PM xxcoder: other material I hated wa fiberglass
10:17 PM Tom_L: abrasive
10:18 PM xxcoder: yup. we had special 1.75" and 1.5" endmills for that job alone
10:18 PM xxcoder: its been endlessly reground
10:18 PM xxcoder: 1.75 would be 1.65" or something
10:18 PM xxcoder: good thing too because dang fiberglass can eat
10:19 PM Tom_L: phenolic was brittle and you had to be careful with it
10:20 PM Tom_L: tungsten was also brittle
10:20 PM xxcoder: inocel is fun lol
10:20 PM Tom_L: mostly used for wing ballast
10:20 PM Tom_L: if you dropped it, it would likely crack
10:21 PM xxcoder: ya used to make wing ballasts, man I hated that job too lol
10:21 PM xxcoder: but job ended year in my job
10:23 PM Tom_L: alot of them were lead but in small spaces typically tungsten
10:23 PM xxcoder: im not sure what material bars I worked on was, but it was very very hard
10:24 PM xxcoder: and heavy
10:24 PM * Tom_L heads to bed
10:25 PM xxcoder: night