#linuxcnc Logs

Jan 16 2025

01:16 AM Deejay: moin
01:39 AM Centurion_Dan1 is now known as Centurion_Dan
02:49 AM lcnc-relay: <meisterdippel@> moin
04:35 AM Tom_L: morning
05:50 AM lcnc-relay: <turboss@> good morning
07:19 AM rdtsc-w: niebubf heheh (thanks JT)
08:01 AM lcnc-relay: <travis_farmer@> Morning
08:01 AM lcnc-relay: sorry to hear about your package theft XX. the one time i had "attempted" theft, i spotted them on camera, ran to the front door (deliveries are to back door, where driveway ends) with my crossbow, and managed to get a shot off that landed through their engine computer. they were pissed, and i called the cops while they shouted unkind words at me. i got a warning from the cops about my actions, but seeing as how the robbers got charges, and...
08:01 AM lcnc-relay: ... i did not, i would not hesitate to do again... 🙂
08:56 AM lcnc-relay: <schoch_@> I have some mystery steel, some mild steel, some 12L14... what is best to make a bolt from? This is for my 7" shaper vise
08:56 AM lcnc-relay: <schoch_@> it will be 5/8 nominal od
08:56 AM lcnc-relay: <schoch_@> not sure of tpi yet
08:57 AM lcnc-relay: <schoch_@> I also have some drill rod but it is only 1/2"
09:01 AM lcnc-relay: <schoch_@> I was also considering using an alloy steel bolt and doing a pass through with a ID threaded and 5/8 od spacer.
09:01 AM lcnc-relay: <schoch_@> basically the "pivot" of the vise will be the 5/8 reamed hole.
09:02 AM lcnc-relay: <schoch_@> i really wish this ammco shaper table had better thought out fixturing, the grid of non-threaded 1/4" holes are slopy as fuck
09:08 AM lcnc-relay: <schoch_@> gemini says """Tensile load capacity is calculated by multiplying the tensile strength of the material by the cross-sectional area of the bolt.
09:08 AM lcnc-relay: 5/8 inch mild steel bolt:
09:08 AM lcnc-relay: Tensile Load = 400 MPa * 197.7 mm²
09:08 AM lcnc-relay: Tensile Load ≈ 79080 N (Newtons)
09:08 AM lcnc-relay: ... long message truncated: https://jauriarts.org/_heisenbridge/media/jauriarts.org/fzGKGukrhJdQzHvUqbOJvvXu/0ue8T_wlGVk (7 lines)
09:09 AM lcnc-relay: <schoch_@> this is comparing 5/8 mild steel vs 10mm grade 12.9
09:23 AM lcnc-relay: <vibram@> Hello
09:24 AM lcnc-relay: <schoch_@> gemini also says that a 5/8 pin would be more rigid than using a bolt/sleeve
09:51 AM lcnc-relay: <skunkworks8841@> new glen made it to orbit - but the booster was lost
10:43 AM roycroft: hi folks
10:43 AM roycroft: it is friday eve!
10:43 AM lcnc-relay: <voiditswarranty@> schoch_@: Got a pic or drawing? What's the bolt/pin doing and which direction is the primary load? Are other bolts holding it down so it doesn't move? Is it a register or the hold down bolt or both?
10:43 AM lcnc-relay: The pin has a core diameter of .625, a 5/8" coarse bolt has a core diameter of ~.530ish, I bet that's why gemini is saying it's gonna be stiffer. It just did naive math. but it's not taking into account the direction of the load, how it's secured, how rigid the load is, how much of the load is transferred through purely tensile, or any analysis of the rest of the assembly.
10:43 AM lcnc-relay: The right angle NT40 head on my horizontal mill is held on with only 3 5/8" bolts, but is located with a register ring, but it's only for locating, not taking any forces. The ring isn't deep. That thing can take BIG cuts! It breaks 1" endmills long before it moves the vise held down by 2 piddly 1/2" studs too.
10:43 AM lcnc-relay: Gut feeling is if it's doing the right thing in the right direction, a 5/8" bolt is gonna be just fine.
10:44 AM lcnc-relay: <voiditswarranty@> given that my time is worthless, I tend to just make a thing based on a gut feeling, and evaluate the results, and remake it if I'm wrong.
11:45 AM -!- #linuxcnc mode set to +v by ChanServ
11:45 AM -!- #linuxcnc mode set to +v by ChanServ
12:14 PM -!- #linuxcnc mode set to +v by ChanServ
12:56 PM lcnc-relay: <schoch_@> it is a shaper so the majority of the force is a shear force
12:57 PM lcnc-relay: <schoch_@> i did a pin, it feels pretty solid and snug
12:59 PM lcnc-relay: <schoch_@> it has two slots that are 7.85mm that I will use for registration and there is a 2.5" square bolt hole pattern a bit oversized .25" and i'll use m6 bolts/nuts to attach
12:59 PM lcnc-relay: <schoch_@> i think it said the clamping pressure from the 6mm bolts is ~ 85kN
01:00 PM lcnc-relay: <schoch_@> the pin should take the majority of the shear forces.
01:03 PM lcnc-relay: <schoch_@> https://imgur.com/a/wkuk7nt
01:05 PM lcnc-relay: <schoch_@> the plate is pretty flat, i'm interested in how flat/parallel I can get it on the shaper.
01:05 PM lcnc-relay: <schoch_@> i wish i had a surface grinder
01:05 PM lcnc-relay: <skunkworks8841@> I think our vise on shaper is held with 2 bolts... 🙂
01:06 PM lcnc-relay: <schoch_@> the old vise was just a 5/8 shoulder bolt/nut nothing else
01:06 PM lcnc-relay: <skunkworks8841@> I think you are over-thinking it
01:07 PM lcnc-relay: <skunkworks8841@> Yes - all the force is shear - but you are limited to the actual cutter..
01:07 PM lcnc-relay: <skunkworks8841@> I think you will turn the cutter inside out before the bolts will shear
01:07 PM lcnc-relay: <schoch_@> i'm happy with just using the pin + 4 6mm bolts
01:08 PM lcnc-relay: <schoch_@> I just need to counter bore the 4 6mm holes and then I can spend a forever watching the shaper surface it.
01:09 PM lcnc-relay: <schoch_@> and fuck it's cold
01:09 PM lcnc-relay: <schoch_@> i'm ready for summer
01:15 PM lcnc-relay: <voiditswarranty@> skunkworks8841@: yeah agreed, it's like a lathe tool post with a single point tool
01:15 PM lcnc-relay: <voiditswarranty@> schoch_@: don't make me "you think that
01:15 PM lcnc-relay: <voiditswarranty@> 's cold again
01:16 PM lcnc-relay: <voiditswarranty@> balmy 37f today, overnight it will drop to -22f as a clipper rolls in from the rockys
01:17 PM lcnc-relay: <voiditswarranty@> if the shop goes much below 40f, the d-bit grinder doesn't have the umph to turn over 😄
01:17 PM lcnc-relay: <skunkworks8841@> https://www.youtube.com/watch?v=nzI0_iZ4cgo
01:18 PM lcnc-relay: <voiditswarranty@> shapers are cool
01:54 PM roycroft: shapers are, indeed, cool, but the only way to make any money with a shaper is to start a youtube channel and make shaper videos
01:54 PM roycroft: assuming we're talking about metal shapers, not wood shapes
02:04 PM lcnc-relay: <die_limonade@> in micromachining shaping can be quite efficient
02:06 PM xxcoder: https://youtu.be/_qHnYVbHgmo surface grinder that uses belt grinder.
02:06 PM xxcoder: just got that video when you guys was discussingf it. funny
02:09 PM lcnc-relay: <skunkworks8841@> lol - that is the saying.. You can make anything on a shaper except money.
02:13 PM xxcoder: that attachment seems quite cool
02:24 PM roycroft: i was about to say that jeremy schmidt made one years ago, but that's the video you linked to
02:24 PM roycroft: looks like he has a new and improved model
02:24 PM xxcoder: yep new model
02:25 PM xxcoder: I did say I "just got" the video ;)
02:26 PM xxcoder: honestly its not bad for $300 or so
02:26 PM xxcoder: I probably missed something not good but yeah
02:27 PM roycroft: i never built the attachment for my belt grinder
02:28 PM roycroft: i'll look at the improved model and see if that inspires me to make one
02:28 PM roycroft: but first i need to move my belt grinder from the old shop to the new one
02:28 PM roycroft: which was on my list of things to get when my pickup broke down
02:33 PM lcnc-relay: <schoch_@> i made a little 1" belt grinder, man that thing is great with a ceramic belt. what a time save
02:36 PM roycroft: i made jer schmidt's version 1 belt grinder - 2"x72"
02:36 PM xxcoder: plans dont seem too expensive
02:37 PM roycroft: i got a contact wheel and a set of small profile wheels, but never built the arms for them
02:38 PM roycroft: shortly after i built mine and got those parts, the gen 2 belt grinder plans came out
02:38 PM roycroft: i bought those plans, and had some conversations with jer about modifying them, but never decided if it was worth building a gen 2 or not
02:39 PM roycroft: if i do, then the mounts for the accessories will change a bi
02:39 PM lcnc-relay: <schoch_@> if you are brave you can actually 3d print the wheels, though they can go boom if you don't have enough walls.
02:39 PM roycroft: i think once i move the machine up to the new shop i'll revisit keeping gen 1 vs building gen 2
02:39 PM * roycroft has proper wheels for his
02:40 PM lcnc-relay: <schoch_@> i had one explode, replaced it with an old caster wheel I had caked with chips and junk that I cleaned up on the lathe.
02:40 PM roycroft: it took me the better part of a week to build mine
02:41 PM roycroft: with that much time invested, i was not going to go cheap on the parts
02:41 PM lcnc-relay: <schoch_@> i think mine took a few hours
02:41 PM roycroft: i'm not that great a welder
02:41 PM roycroft: and the machine required lots of welding
02:41 PM lcnc-relay: <schoch_@> about $200 all in including the motor
02:41 PM lcnc-relay: <schoch_@> it has a 500w e-bike motor on it
02:42 PM roycroft: mine has 2hp three phase motor on it with a vfd
02:42 PM lcnc-relay: <schoch_@> $50 bucks for that motor, shame that store went out of business.
02:42 PM roycroft: but it is much bigger than yours, so a bigger motor makes sense for it
02:42 PM roycroft: i considered building a smaller belt grinder, but decided to go with the 2x72, and i'm really glad i did
02:43 PM roycroft: i used to have a 6"x80" edge sander in my wood shop, but i sold that to recover some shop real estate
02:44 PM roycroft: i miss that sander a lot, but the belt grinder is big enough to do a lot of stuff that i used to do on the edge sander
02:44 PM roycroft: a 1" would not suffice for that at all
03:35 PM lcnc-relay: <schoch_@> https://photos.app.goo.gl/62ApSVVTHKeGMbNz6
03:36 PM lcnc-relay: <schoch_@> shearing cutter chips are cool
03:38 PM roycroft: ok, abom junior
03:38 PM lcnc-relay: <schoch_@> i don't think adam would own a 7" shaper
03:39 PM roycroft: hence the "junior" :)
03:39 PM roycroft: and he might get one to use to clean his fingernails
06:16 PM xxcoder: mini train snowplow plowing aside real snow lol https://youtu.be/2av1nuELps8
06:41 PM lcnc-relay: <skunkworks8841@> spacex caught the booster for the second time. Starship was lost - unscheduled disassembly..
06:41 PM xxcoder: yep. honestly I prefer booster failure than spaceship failure
06:43 PM rdtsc: Interesting inertial positioning method for spacecraft... https://www.youtube.com/watch?v=wiRMdRi0LrI
06:43 PM lcnc-relay: <skunkworks8841@> not if it takes out the launch infrastructure...
06:43 PM lcnc-relay: <skunkworks8841@> 😉
06:44 PM lcnc-relay: <skunkworks8841@> https://www.youtube.com/shorts/HJbmSnd_wjI
06:47 PM roycroft: i prefer the nobody dies failure to the people die failure
06:47 PM roycroft: other than that if it's not my stuff i'm not terribly invested in what fails or not
06:48 PM xxcoder: saw that yeah that is definitely cool. looks like need more dev but yeah
06:48 PM lcnc-relay: <skunkworks8841@> This was block2 ship.. So - maybe some more fiddling..
06:48 PM xxcoder: the gyro thing
06:48 PM lcnc-relay: <skunkworks8841@> *first block 2
06:48 PM * roycroft is finally ready to install his wheel hub, and just came in to figure out the orientation of the thrust washer
06:49 PM * roycroft heads back out in hopes of finishing that step today
06:52 PM lcnc-relay: <skunkworks8841@> lol - mom has 2 sets of hearing aids - older and newer. One moring a week or so ago - one of each went bad. They were able to fix both - so I just picked them up today. Hopefully she is good for a while
07:26 PM roycroft: yay - the wheel hub is installed, and everything lines up and fits properly
07:27 PM xxcoder: nice
07:27 PM roycroft: it got too dark to torque the bolts, but that won't take long once i can see again
07:27 PM roycroft: and it's all downhill from here - not surprises or oddities
07:28 PM roycroft: toque those bolts, hook up the abs sensor, install the locking hub (which i've already test fit), install the brake, install the tire, and go
07:28 PM roycroft: all that stuff is easy
07:29 PM roycroft: i also finished painting my window casing in the studio today at lunch time
07:29 PM roycroft: i think i'm going to like it
07:29 PM roycroft: it's the model for the rest of the house, so i really want to get it exactly the way i want it
07:30 PM roycroft: i absolutely hate the typical 1980s l-shaped casing that came with the house
07:30 PM roycroft: my long-term goal is to not have the house remind me of the '80s at all
07:31 PM roycroft: i did discover, regarding the vehicle, that the thrust washer had been installed in the wrong place before
07:31 PM roycroft: and that likely contributed to the failure, so before i drive it i'm going to carefully inspect the passenger side
07:42 PM rdtsc: sounds like a really smart idea, although it could have been only a one-sided repair
07:43 PM roycroft: yes, although the hub locks on both sides are aftermarket
07:43 PM roycroft: so at the very least the passenger side hub lock has been serviced
07:44 PM roycroft: the wheel hub and thrust bearing do not need to be touched to do that, but i think it's prudent to check anyway
07:44 PM roycroft: this truck has 375k miles on it
07:45 PM roycroft: and it was a ranch truck most of its life
07:45 PM roycroft: i'm sure it's had lots of repairs
07:45 PM roycroft: i've found hay behind the dashboard, and there used to be a 5th wheel hitch on it
07:46 PM roycroft: it would be a good guess that the truck used to haul a hay wagon
07:46 PM roycroft: and those things weigh a *lot* when loaded
07:49 PM rdtsc: true; better safe than sorry...
07:50 PM xxcoder: you sure its not million and 375k miles? ;)
07:51 PM roycroft: i do not think so
07:51 PM xxcoder: some working truck get so huge mileage and are fine because its taken care of too
07:51 PM roycroft: the engine is broken in but not worn out
07:51 PM roycroft: but i also have some service records going back years and none of them give any indication that the odometer has rolled over
07:52 PM xxcoder: interestng. well 375k is pretty large but from what you say it seems quite well maintained
07:53 PM xxcoder: meanwhile my car havent crossed 100k miles yet lol
07:53 PM xxcoder: 93k I think now? considering its 2012 car
07:55 PM roycroft: my veloster just passed 90k
07:55 PM roycroft: hopefully this year i'll drive it fewer miles than last year
07:55 PM * roycroft is looking forward to a lot fewer trips to town
07:56 PM roycroft: i was going to put my studio back together now that the window is done, and start getting into the cnc router project, but i have some electrical work to do in the studio that will require removing part of a wall and replacing the sheet rock
07:57 PM xxcoder: projects never end eh
07:57 PM roycroft: i'm also about to install my laundry room sink, which will involve removing a couple sections of wall in that room to do some plumbing
07:57 PM roycroft: it makes sense to do all the sheet rock work at the same time
07:57 PM lcnc-relay: <big_kevin420@> maybe its in km lol
07:59 PM xxcoder: miles. usa vehicles very rarely have ability to change to metric units
08:00 PM xxcoder: out of all vehicles I owned, only mecury sable had a way. it also had little bit wonky switch button, so I sometimes had to drive and use kph
08:00 PM roycroft: my prius could switch back and forth, but the odometer always stayed in miles
08:01 PM roycroft: that's probably a federal law
08:01 PM roycroft: the trip odometer and speedometer could be switched
08:07 PM lcnc-relay: <big_kevin420@> i was helping this guy get his drivers license in canada and prep for the test
08:07 PM lcnc-relay: <big_kevin420@> but my car is from america, so it was mainly in miles
08:07 PM lcnc-relay: <big_kevin420@> we are on this non highway road, with so many hill turns
08:07 PM lcnc-relay: <big_kevin420@> i keep yelling at him while we drive
08:08 PM lcnc-relay: <big_kevin420@> " 60 !!! 60!!! oh god only 60!!!!"
08:08 PM xxcoder: lol
08:08 PM lcnc-relay: <big_kevin420@> he pulls over so we can switch , and he starts laughing , ohhhh that was 60 miles huh
08:08 PM xxcoder: it was hard to maintain 100 kmh, it looks huge and wrong
08:09 PM xxcoder: kph
08:09 PM lcnc-relay: <big_kevin420@> lol its like fahrenheit
08:10 PM lcnc-relay: <big_kevin420@> idk if anyone uses kph
08:10 PM lcnc-relay: <big_kevin420@> kmh
08:10 PM lcnc-relay: <big_kevin420@> km/h
08:10 PM xxcoder: ok
08:11 PM lcnc-relay: <big_kevin420@> we almost hit so many cars and hes getting scared as i keep yelling 60 and hes likle im doing 60
08:11 PM lcnc-relay: <big_kevin420@> and iom scared because we are doing 100kmh in a 60 zone
08:21 PM rdtsc: oops :)
08:32 PM lcnc-relay: <skunkworks8841@> I ate at a Texas road house for the first time... Wow. They turned steak into fastfood.. I mean - it was good food. But we ordered and had our food in less than 10 minutes
08:32 PM xxcoder: hopefully not reheated pre-cooked steak
08:32 PM Tom_L: i just wish it wasn't quite so noisy
08:32 PM lcnc-relay: <skunkworks8841@> Yah.. it is noisy
08:32 PM Tom_L: roadhouse tip: every 30 min they do a line dance
08:33 PM Tom_L: good steak though
08:33 PM lcnc-relay: <skunkworks8841@> Lol.. well.. we must have eaten and left before 1/2 hour..
08:33 PM Tom_L: ours takes a bit longer than 10 min
08:33 PM Tom_L: from the time they open til close they're packed
08:33 PM xxcoder: had some cheesesticks and sweet pototo fries for dinner today
08:34 PM xxcoder: yum. airfried, as I have no way to bake anything lol
08:34 PM xxcoder: I slightly overcooked the sauce, it exploded in microwave but thankfully just tiny spots and easy to clean
08:34 PM Tom_L: xxcoder, you can see them cooking it as you walk in
08:34 PM xxcoder: oh interesting
08:35 PM Tom_L: as well as the rolls
08:35 PM xxcoder: I guess it depends on certainity of certain number of customers
08:35 PM Tom_L: they have no problem staying full of ppl
08:36 PM xxcoder: sonds like good strat
08:36 PM Tom_L: skunkworks, that may vary from one to the next
08:36 PM Tom_L: i would assume they're all very similar
08:40 PM lcnc-relay: <skunkworks8841@> I was so surprised how fast it was for how busy it was
08:40 PM Tom_L: did you have to get a reservation?
08:41 PM Tom_L: iirc ours is by reservation only
08:41 PM bjorkintosh: they have it down to a science.
08:41 PM bjorkintosh: did you get some peanuts?
08:41 PM lcnc-relay: <skunkworks8841@> I was telling the kids it was probably going to be at least 20 minutes.. and the food showed up
08:41 PM Tom_L: i didn't but they have em
08:43 PM lcnc-relay: <skunkworks8841@> I did - on the app.. it said 0 to 10 minute wait..
11:53 PM rifraf: new toy, electro vice https://www.youtube.com/shorts/mAtPgAnMhds, finally got it mounted
11:54 PM xxcoder: 2 microwave transformers eh
11:55 PM xxcoder: pretty cool
11:57 PM rifraf: xxcoder yep, have made various cool projects with them, this has been tested for a while
11:58 PM rifraf: had one issue, the resin seeped into the old switch that is mounted to the vice so cannot turn oi off :) , but an external switch still is doing the job
11:59 PM xxcoder: lol doh