#linuxcnc Logs
May 31 2021
#linuxcnc Calendar
01:02 AM -!- #linuxcnc mode set to +v by ChanServ
01:18 AM Deejay: moin
01:34 AM CaptHindsight: https://www.automationdirect.com/adc/overview/catalog/sensors_-z-_encoders/limit_switches/precision_limit_switches
01:38 AM CaptHindsight: https://www.mouser.com/datasheet/2/307/d5a_dsheet_csm591-22125.pdf
01:39 AM CaptHindsight: https://www.baumer.com/sg/en/product-overview/object-detection/precision-mechanical-switches/c/285
01:41 AM enleth: mrec: also remember to mount those in a way that prevents them from being crushed if something goes bonkers
01:41 AM enleth: and add limit switches that are not software-controlled
01:43 AM CaptHindsight: or rely on honey badgers or other small mammals for proper operation
04:49 AM mrec: I think I'll rather look out for a linear scale with a marker and some not so accurate limit switches.
06:25 AM JT-Cave: morning
06:35 AM Tom_L: raining
06:38 AM JT-Cave: we get that tomorrow
06:58 AM JT-Cave: a couple of shots of Rémy Martin VSOP and I slept till well after sunrise
07:08 AM _unreal_: yawn
07:08 AM _unreal_: yep I feel like I was hit by a freight train
08:56 AM jymmmm: Morning
09:03 AM JT-Cave: yo
09:39 AM veegee: LOOOOLLLLLLLLLLLLL
09:39 AM veegee: Peter Detmers, president of Mitutoyo Canada responded to my email about the difference between the micrometer models
09:39 AM veegee: AHAHAHHHA
09:40 AM veegee: How the hell do they not have technical support staff who handle this?
09:40 AM veegee: He must be super bored with absolutely nothing to do
09:52 AM mrec: finally my m0.3 108 teeth spurgears mesh up perfectly
10:10 AM Tom_L: veegee, maybe they knew it was _YOU_ calling :)
10:11 AM veegee: Tom_L I'm going to respond to him and tell him how special I feel
10:11 AM Tom_L: did you ask how come your battery was dead?
10:23 AM veegee: Tom_L no lol I'm going to pitch him our software engineering services to make the website less shitty
10:23 AM veegee: obviously not in those words
10:24 AM veegee: Maybe not me personally, I'll get our CEO to do it. CTOs aren't really great with social engineering if you know what I mean
10:25 AM _unreal_: ok breakfast done and played witht he wild ducks outside
10:25 AM _unreal_: bread and pettings
10:25 AM veegee: _unreal_ you sure they're not these damn Canada geese?
10:26 AM _unreal_: no they are florida ugly ducks
10:26 AM veegee: I'd rather have those
10:26 AM veegee: Canada geese scratched my car, pecked my leg (drew blood)
10:26 AM _unreal_: https://www.heraldtribune.com/storyimage/LK/20190715/NEWS/190719172/AR/0/AR-190719172.jpg
10:26 AM veegee: At that point, I just gave it a solid kick right in the chest and punted it a few meters
10:26 AM _unreal_: they are always walking around
10:27 AM veegee: I don't take shit from aggressive animals
10:27 AM _unreal_: walking around in little packs
10:27 AM veegee: It didn't dare bug me again
10:27 AM _unreal_: and if they see people they run up to them
10:27 AM _unreal_: hoping for bread
10:27 AM _unreal_: LOT of people feed them
10:27 AM veegee: Not aggressive though?
10:28 AM Rab: _unreal_, we have a bunch of those here. Not super photogenic.
10:28 AM Rab: But friendly enough.
10:28 AM _unreal_: florida is drowning with them
10:28 AM Rab: Maybe they can be trained to eat mosquitos?
10:29 AM _unreal_: trying to find a nice universal holder for the neje laser
10:29 AM _unreal_: I may have to design my own
10:30 AM _unreal_: What I want is something that has a set able side and an elastic side
10:30 AM _unreal_: https://www.thingiverse.com/thing:2675319
10:30 AM _unreal_: like that but more useful
10:30 AM _unreal_: that design is kind of useless IMO
10:31 AM veegee: HOLY SHIT
10:31 AM veegee: I just clicked the picture
10:31 AM _unreal_: ?
10:31 AM veegee: WTF IS THAT THING
10:31 AM veegee: looks like it came straight out of The Last of Us
10:31 AM _unreal_: its a laser hold down for the neje laser
10:32 AM _unreal_: ?
10:32 AM _unreal_: huh?
10:32 AM veegee: the ducK!!!
10:32 AM veegee: I thought "ugly duck" was a joke
10:32 AM _unreal_: heh
10:33 AM _unreal_: ya some are REALLLLLLY fuggly
10:35 AM _unreal_: NO WAY just came up with a great design idea, a modification of this https://www.thingiverse.com/thing:3636674
10:53 AM Tom_L: JT-Cave, i think i need to swap out MB. Every time i try importing one of those ~1k surface iges files i get the blue screen. it's either gotta be the MB or the SSD and the other MB has an M.2 SSD so i'll swap em both
10:53 AM Tom_L: and hope for the best
10:54 AM Tom_L: only happens booting under 64bit win though
10:55 AM _unreal_: I dont use SSD's on any computer that I'm using for CAD
10:55 AM _unreal_: to much swap
10:55 AM _unreal_: better to use a clicker and shit loads of system ram
10:55 AM _unreal_: clicker hard drive
10:56 AM _unreal_: Tom_L, so far I'm very impressed with my 3d printer
10:56 AM Tom_L: these are largeish iges files
10:56 AM _unreal_: heh
10:56 AM Tom_L: i tried one on the other mb just sitting on the bench and it seemed to do ok
10:57 AM _unreal_: as I said sure SSD is a shit ton faster, but its geared twards READ only
10:59 AM Tom_L: could also be a sata connector as i've had to change several cables
10:59 AM Tom_L: i test alot of things on that pc
10:59 AM * JT-Cave sees a nap in the near future
10:59 AM Tom_L: JT-Cave, rain here... may as well
11:00 AM JT-Cave: sunny and 70 and I finished bagging the compost from bin #a
11:00 AM Tom_L: JT-Cave, btw, which side is bottom on that thing?
11:00 AM Tom_L: the 10 holes or the other side?
11:00 AM JT-Cave: the 10 holes
11:00 AM Tom_L: figures
11:01 AM JT-Cave: that's the part that always has errors for me on the import
11:01 AM Tom_L: it's a real mess
11:01 AM Tom_L: i've gotten it in but my god there are alot of surfaces
11:02 AM Tom_L: JT-Cave, how'd you get talked into that one???
11:03 AM JT-Cave: bagging the compost?
11:03 AM Tom_L: let it simmer longer next time!
11:04 AM JT-Cave: it's been simmering since last summer, gotta move b into a and c into b and start putting fresh poop in c
11:04 AM Tom_L: i'll may try to strip away all but the bottom shell if possible
11:06 AM Tom_L: the original file certainly would have been easier to use
11:06 AM JT-Cave: aye, I wish we had the original file...
11:07 AM Tom_L: the export created top and bottom surfaces for both the top and bottom :)
11:07 AM Tom_L: and everything inbetween (support structures etc)
11:11 AM _unreal_: Tom_L, have you checked all of your caps?
11:29 AM veegee: https://www.youtube.com/watch?v=fo8tCTM3nak
11:29 AM veegee: That is impressive for closed loop steppers
11:29 AM veegee: 500mm/s is great rapids for the cost
11:30 AM veegee: Definitely going to get myself some of those
11:39 AM _unreal_: ?
11:39 AM _unreal_: veegee, ahhhh?
11:41 AM _unreal_: 500mm/s great and fast?
11:41 AM _unreal_: I would expect a lot more honistly
11:54 AM _unreal_: its amazing I have done it
11:54 AM _unreal_: I have a cnc, laser and printer
11:54 AM _unreal_: :)
11:54 AM _unreal_: FEAR ME
12:26 PM roycroft: you live in florida
12:27 PM roycroft: as far away from here as one can be and still be in the lower 48
12:27 PM roycroft: i do not fear you
12:27 PM roycroft: i avoid you :)
12:29 PM roycroft: i'm looking for some spray paint, and not finding what i need locally, so i was looking online
12:30 PM roycroft: i found it from one vendor who says "arrives by september 11 with standard shipping, as soon as september 10 with expedited shipping"
12:30 PM Tom_L: walmart has spray paint
12:30 PM Tom_L: :)
12:31 PM roycroft: lots of stores have spray paint
12:31 PM roycroft: but not in the color i need
12:33 PM roycroft: i'm trying to match the jet off-white color, as i need to modify one of my machines and i want the new parts to match
12:33 PM -!- #linuxcnc mode set to +v by ChanServ
12:33 PM roycroft: i also need an off-white for my cnc computer/controller rack, and the jet off-white would be a nice color for that
12:34 PM roycroft: so i find something that matches the jet i can use it for other things as well
12:34 PM roycroft: and hopefully the manufacturer won't pull a hammerite after i've invested in their product
12:35 PM roycroft: some folks say that krylon gloss ivory and rustleum gloss ivory are good matches
12:35 PM roycroft: if the caps on the cans are any indicator, though, they're far too yellow
12:35 PM roycroft: but i might grab a can of each and see if either or both would work
12:46 PM -!- #linuxcnc mode set to +v by datapacket.freenode.net
01:26 PM roycroft: i went to lowe's and found that all their off-white spray paints had the exact same color cap, from almond to ivory to canvas white and all the rest
01:26 PM roycroft: so i guess for whites they don't even pretend to match the actual color
01:26 PM roycroft: i picked up 4 different cans that i think might work and will do some samples
02:16 PM mrec: can anyone recommend an insert for grinding soft steel? those things that come with a dremel wear out to quick
02:17 PM mrec: after grinding 32 discs the dremel tool went down 0.2mm in total
02:24 PM Tom_L: carbide burrs?
02:25 PM Tom_L: what sort of grinding?
02:25 PM Tom_L: mrec, cutting wheel?
02:54 PM mrec: I cut some gears, and they left a not so nice finish on the exit side of the gear cutter
02:54 PM mrec: however I used a dremel tool for now it was better than nothing. There's some tolerance on the thickness of the gear (as long as the teeth are ok)
03:56 PM enleth: mrec: seconding carbide burrs
03:57 PM enleth: they could be a bit too aggressive for your needs, though
03:57 PM enleth: hard to say
03:57 PM enleth: M
03:58 PM enleth: mrec: a different approach might be a hard fiber wheel for a bench grinder
03:58 PM enleth: it's basically scotch-brite in a wheel form factor
03:59 PM enleth: I think 3M actually makes it under that brand
03:59 PM roycroft: i think there are scotch brite wheels for dremels
03:59 PM enleth: possibly
04:00 PM enleth: they work well for knocking down burrs and conform to the shape of workpiece
04:00 PM roycroft: from what was described, i'd start by putting a sheet of abrasive paper on a piece of glass or something and rubbing the back of the gear on it
04:00 PM roycroft: that would knock down most of the burrs
04:00 PM roycroft: then move to the abrasive wheel to finish the job
04:51 PM drdoc: mrec: what roycroft said, and if you're not in a hurry to get them done, google "dop stick"
04:53 PM roycroft: the first color looks like it's going to try too yellow
04:53 PM roycroft: i'm about to shoot the second color sample
04:53 PM drdoc: roycroft: I'm a big fan of Rustoleum "epoxy" rattlecans
04:54 PM roycroft: i'm trying two rustoleum products and one krylon product
04:54 PM drdoc: the epoxy finishes don't need primer
04:54 PM roycroft: i'm trying to match an existing color as closely as possible
04:54 PM roycroft: there are no rattle can epoxies that will be close in color
04:54 PM drdoc: there's a white, an almond, and a "biscuit" color
04:54 PM roycroft: i don't mind multiple coats, including primer
04:55 PM drdoc: ok
04:55 PM roycroft: and i usually shoot clear over the final coat anyway
04:55 PM roycroft: clear coat usually dries a bit harder
04:55 PM roycroft: epoxies notwithstanding
04:55 PM drdoc: that's what I like about the rustoleum
04:55 PM drdoc: it takes a few days to fully cure, but it's tough
04:56 PM roycroft: yes, my experience is that rustoleum is usually pretty durable
04:56 PM roycroft: their hammered paints, not so much
04:56 PM drdoc: no
04:56 PM roycroft: but the rest of their line is pretty tough
04:57 PM drdoc: it's dang hard to get a good-looking, even finish with the hammered line too
04:57 PM roycroft: i have a lot of gardening chores to catch up on
04:57 PM * drdoc heads off to play
04:58 PM roycroft: i was planning on spending most of the day doing that
04:58 PM roycroft: but i'm getting to the point where i can only do that kind of work for a couple hours at a go
04:58 PM roycroft: especially when it's hot like it is today
04:58 PM drdoc: same here
04:58 PM roycroft: i need to start planning on doing a little bit every day instead of long sessions on the weekend
04:59 PM drdoc: I picked up a "new" dryer Saturday and installed it yesterday, and that was my entire weekend output
05:00 PM drdoc: finally talked the SE into ditching electric for gas
05:00 PM roycroft: for the cooker?
05:00 PM roycroft: oh, for the dryer
05:00 PM drdoc: clothes dryer
05:01 PM * roycroft uses solar power this time of year to dry his laundry
05:01 PM roycroft: well
05:01 PM roycroft: a combination of solar power and wind power
05:01 PM drdoc: and found that some bozo had basically *swedged* a brass flare nut onto black iron NPT
05:02 PM drdoc: we live next to a greenbelt, so line drying isn't practical
05:03 PM drdoc: either the jays steal the underwear or they & world crap on the clothes
05:04 PM drdoc: I don't think we've ever hung laundry that some of it didn't go back to the washer
05:16 PM _unreal_: few new photos https://photos.app.goo.gl/1ejmwQjHGskbBvob9
05:32 PM Tom_L: _unreal_, how long do those take?
05:35 PM veegee: What's the standard graduations for 2-3" micrometers?
05:35 PM veegee: 0.001"?
05:35 PM veegee: Like what a typical machine shop would have for 2-3", 3-4" micrometers
05:35 PM Tom_L: unless you get one that's .0005"
05:36 PM veegee: ok I'm getting the metric ones obviously, but they state 2µm accuracy, but graduations are 10µm
05:36 PM Tom_L: yes typically .001 unless it has a verner scale on the side
05:37 PM Tom_L: https://www.starrett.com/metrology/product-detail/ST436.1CXFLZ
05:39 PM Tom_L: https://www.amazon.com/Mitutoyo-103-908-40-Micrometer-Standards-Resolution/dp/B008NCD2ES/ref=pd_lpo_328_t_1/137-3810080-8294358?_encoding=UTF8&pd_rd_i=B008NCD2ES&pd_rd_r=0e4d7403-fe42-4800-9c8e-13c9609ebb85&pd_rd_w=RZhKN&pd_rd_wg=qkqEZ&pf_rd_p=a0d6e967-6561-454c-84f8-2ce2c92b79a6&pf_rd_r=PMYMKMK80MH8C09JJFQF&psc=1&refRID=PMYMKMK80MH8C09JJFQF
05:40 PM Tom_L: https://www.amazon.com/Mitutoyo-103-908-40-Micrometer-Standards-Resolution/dp/B008NCD2ES/ref=pd_lpo_328_t_1/137-3810080-8294358
05:40 PM Tom_L: shortened
05:41 PM veegee: Ok yeah the mitutoyo analog micrometers have one with a vernier scale for the 25-50mm one
05:41 PM Tom_L: .0001 resolution
05:41 PM veegee: It's a little bit more expensive, like $80, but much cheaper than the digital version which is $250
05:41 PM veegee: I already have the digital version for 0-25mm
05:41 PM Tom_L: i happen to like their digital mics
05:41 PM veegee: I love mine
05:42 PM veegee: But for the 25-50mm range, not critical I have a digital one since it would get used a lot less
05:42 PM veegee: I'm so glad they have dedicated metric versions
05:42 PM Tom_L: yeah why pick up something accurate when you can use calipers?
05:43 PM veegee: the 25-50mm model without the vernier scale is $50 CAD. With vernier scale is $80 CAD
05:43 PM veegee: $50 CAD for anything from Mitutoyo is a steal
05:43 PM Tom_L: meh, i can usually squeeeze em down to the next mark :D
05:44 PM veegee: fucking american units piss me off so much
05:44 PM Tom_L: is this what it reads or is this what you want it to read???
05:44 PM veegee: ratchet stop is pretty consistent
05:44 PM Tom_L: where's flyback when ya nee him...
05:44 PM Tom_L: BMCC!
05:44 PM veegee: measuring ball bearings gives very repeatable results
05:44 PM veegee: since it's a point contact
05:45 PM veegee: I would never squeeze anything with a micrometer. Don't want to potentially damage the carbide measuring faces
05:46 PM veegee: Also what the hell, you squeeze it to the next 25.4µm?!
05:46 PM Tom_L: well that's after i took it off my wood piece i had gluing, clamped with it!
05:46 PM veegee: I don't dare push it more than 3µm
05:46 PM veegee: LOL who measures wood with micrometers
05:46 PM Tom_L: CLAMP
05:46 PM veegee: ah
05:47 PM Tom_L: it's been done more than once i'm sure
05:47 PM _unreal_: Tom_L, how long do what take?
05:47 PM Tom_L: the prints you posted
05:48 PM _unreal_: oh
05:48 PM _unreal_: ahh
05:48 PM _unreal_: the newest one with the person sitting at a table
05:48 PM _unreal_: about an hour
05:49 PM _unreal_: but thats because its a raster
05:49 PM _unreal_: if it was a black and white I could print a @!#%@#$% ton faster
05:49 PM _unreal_: gray scale raster is slow with the current arduino controller
05:49 PM _unreal_: when ever I can get the stm32 controller swapped in it should be WAY faster
05:50 PM Tom_L: how wide a step over does it take?
05:53 PM _unreal_: 300dpi
05:53 PM veegee: https://accusizetools.com/collections/micrometers-attachments pisses me off so much
05:53 PM veegee: Canadian company, micrometers are all using shitty inch units
05:53 PM _unreal_: so thats like ? 20 lines/mm
06:00 PM Tom_L: veegee, just stick with calipers, they're bilingual
06:01 PM veegee: roycroft what are your thoughts on M35 vs M42 cobalt HSS? M35 has 5% cobalt, 6.4% tungsten. M42 has 8% cobalt, 1.5% tungsten
06:02 PM veegee: Either one has higher wear resistance than M2
06:02 PM veegee: But the choice isn't so clear between M35 and M42
06:03 PM veegee: hardness and wear resistance and edge retention is important for me, don't care about being forgiving to shock or interrupted cuts. This is for single point turning tools
06:04 PM veegee: I'll be getting a tool and cutter grinder soon for making precision turning tools
06:04 PM Tom_L: that would also depend on what you're turning
06:05 PM veegee: your mom over
06:05 PM veegee: OH SNAP
06:05 PM veegee: just kidding just kidding, I couldn't help myself
06:05 PM Tom_L: you'd have to dig her up first thank you
06:05 PM veegee: oh come on
06:05 PM veegee: you can't do me like that dawg
06:05 PM veegee: I troll the ones I love the most <3
06:07 PM _unreal_: can.... you.... feel.... the love.......... to-night....
06:21 PM roycroft: the second color looks a lot better, and may be a winner
06:21 PM roycroft: the first is way too yellow, as i anticipated it might be
06:29 PM CaptHindsight: veegee: https://www.rapidtables.com/convert/length/inch-to-mm.html don't hurt your brain
06:32 PM veegee: CaptHindsight I've memorized the numbers like 25.400, 12.700, 6.350 for common ones
06:32 PM veegee: roycroft thoughts on M35 vs M42 above?
06:41 PM Tom_L: M42 is better for harder materials
06:42 PM Tom_L: M35 is less susceptible to shock than M42
06:42 PM Tom_L: ie voids in the cut. cutting a square
06:45 PM Tom_L: if you _had_ to pick _one_ M42 would be it
06:45 PM veegee: Tom_L perfect, thanks
06:46 PM veegee: I'll be getting both. I have M35 ones already. I use them for exactly that: cutting hex, square, etc. Anything that shocks the tool like that
06:47 PM Tom_L: M2 is closer to hss
06:47 PM veegee: I think M35 is superior in every way to M2. M2 is just really cheap, so I have a bunch of M2 blanks for making very specific profiles
06:47 PM veegee: like turning an o-ring seat
06:48 PM veegee: Ultimately, a toolpost grinder is going to be necessary
06:48 PM Tom_L: i got a green stone a while back
06:49 PM veegee: Although after fixing the long. feed, surface finish improved significantly on mild steel. Never had an issue with surface finish on harder steels for some reason
06:49 PM veegee: 4140 chromoly turns perfectly with WNMG432 inserts with a beautiful surface finish
06:50 PM Tom_L: i'm gonna try that AlTin on some steel one of these days
06:52 PM veegee: Tom_L I'm going to try that tomorrow, just scored a great deal on 10 tool holders + 10 inserts for a total of $250 CAD no tax
06:53 PM Tom_L: AlTin coating?
06:53 PM veegee: https://accusizetools.com/collections/micrometers-attachments/products/2-key-electronic-digital-outside-micrometers-w-output?variant=35246437105818 not a bad price for 3µm accuracy digital ones
06:53 PM veegee: Tom_L yes
06:53 PM veegee: I'll tell you how that goes. I can take a video if you like
06:54 PM Tom_L: i'd question the accuracy
06:54 PM Tom_L: at that price
06:54 PM veegee: They're reputable. They claim 3-5µm. Mitutoyo claims 1-2µm depending on model
06:54 PM veegee: Which is fine with me for the larger sizes
06:55 PM veegee: I have mitutoyo gage blocks (the highest tolerance class, forgot what it's called) so I can verify
06:55 PM veegee: Accusize is the middle ground for price/performance. They're pretty clear about what their tools can do.
06:56 PM veegee: Not like the Chinese 9,000mAh 18650 li ion cells lol
06:56 PM Tom_L: https://www.amazon.com/Mitutoyo-Digital-Micrometer/dp/B00WMLMJH2
06:56 PM veegee: I have that exact one already
06:56 PM veegee: I need a 25-50mm one
06:57 PM Tom_L: pretty sure that's what i have
06:57 PM veegee: I would be looking at this specific one: 293-235-30
06:58 PM veegee: https://ecatalog.mitutoyo.com/Coolant-Proof-Micrometer-Series-293-with-DustWater-Protection-Conforming-to-IP65-Level-C1089.aspx
06:58 PM veegee: They have a "metric" tab on that page which I love
06:59 PM veegee: I don't want to see any imperial shit on my precision measurement tools ever. I should have gotten the metric version of the 0-25mm model, but the standard one was on sale at the time and the only difference is the analog scale which doesn't matter since it's digital anyway
07:00 PM Tom_L: send it to me if you don't want it anymore :)
07:00 PM roycroft: many of the amazon mitutoyo calipers are counterfeit
07:00 PM roycroft: i don't know if that's a thing with micrometers or not
07:01 PM veegee: roycroft I bought this one a few years ago: https://www.amazon.ca/Mitutoyo-500-196-30-Advanced-Measuring-Resolution/dp/B00IG46NL2/
07:01 PM roycroft: if it was sold by amazon it's probably legit
07:01 PM roycroft: if it was sold through amazon marketplace it's iffy
07:01 PM veegee: Based on the quality of it in general, I don't think it was fake.
07:02 PM veegee: Yeah marketplace of course, lots of fakes
07:02 PM roycroft: the usual indicator that it's a fake is that the battery only lasts as long as a harbor freight caliper
07:02 PM * Tom_L notes it displays inch but the scale is metric
07:02 PM roycroft: like 3 days and a few seconds
07:02 PM Tom_L: how fitting :)
07:06 PM roycroft: i have the 4"/100mm version of that, veegee
07:06 PM roycroft: that's the one that's gone several years (well over 3) on the original, supplied battery
07:06 PM veegee: I misspoke, the calipers are fine because they have an on/off switch
07:06 PM veegee: the micrometers need to be locked
07:07 PM veegee: Because even small vibrations cause it to think that it's being used and it'll turn itself on
07:07 PM roycroft: i never turn mine off
07:07 PM veegee: I didn't lock the micrometers so it was just constantly turning itself on while sitting in its case
07:07 PM roycroft: it will power down on its own after a few days of non-use
07:07 PM veegee: roycroft it has auto power off
07:07 PM veegee: Yeah I know, but the calipers have an explicit ON button
07:07 PM roycroft: yes
07:07 PM veegee: the micrometers DON'T
07:07 PM veegee: so any small motion will turn them on
07:07 PM veegee: the only way to prevent that is to lock it
07:08 PM roycroft: my calipers have powered off maybe a half dozen times since i've had them
07:08 PM veegee: I forgot to do that, so it was just turning itself on constantly in its case just from the vibration of typing on my keyboard
07:08 PM roycroft: because i use them pretty much daily
07:09 PM roycroft: the reason i got that size is because it fits in a pocket easily, so they go with me most places
07:10 PM roycroft: i should get an 8" version
07:11 PM roycroft: i don't need my 6" calipers all that often, but frequently i need to measure something between 6" and 8"
07:11 PM roycroft: 12" would be nice, but i don't have to do precision measurements of things that large often, and the price goes way up as the length of the calipers increases
07:12 PM roycroft: 8" is US$190
07:13 PM Tom_L: 4" calipers would be handy
07:14 PM roycroft: 12" US$475
07:15 PM roycroft: they're great, tom_l
07:15 PM roycroft: and if you don't want to pop for mitutoyo, andypugh posted a link quite a while back for some cheap ones that are accurate and don't burn through batteries
07:15 PM roycroft: iirc they were about US$40
07:16 PM roycroft: i may have the link somewhere, but i'm sure if you ask him he'll be able to tell you what they are
07:16 PM roycroft: and if i'm honest, it's probably better to take a set of $40 calipers to the store with you than a nice mitutoyo
07:17 PM andypugh: https://www.machine-dro.co.uk/calipers/standard-digital-calipers/0-300mm-0-12
07:21 PM roycroft: we were talking about 100mm calipers
07:22 PM roycroft: the ones you mentioned some years ago may have been 75mm
07:22 PM roycroft: which would also be handy for carrying around with one
08:01 PM andypugh: I have 75mm and 100mm, also several 150mm and one 300mm.
08:02 PM andypugh: To be honest, these are pretty decent for carrying around: https://www.amazon.co.uk/Faithfull-CALDIG75-Digital-Caliper-Capacity/dp/B016QUDZ86
08:04 PM andypugh: Wierd pricing. £9 for one, £26 for 2, £41 for 3?
08:10 PM skunkworks: andypugh: are those plastic?
08:11 PM skunkworks: I guess it says carbon fiber..
08:11 PM skunkworks: we use a few harbor freight/enco cheap ones.. They work good.
08:27 PM veegee: https://www.amazon.ca/Parker-ASN-15-Plastic-Exhaust-Silencer/dp/B003Q6CBKM Best air silencers I've ever used
08:27 PM veegee: Only problem is, they get clogged eventually if used for auto tank drain purposes
08:27 PM veegee: It's incredibly how quiet they make it
08:40 PM _unreal_: silencer!!!!! heheh I read it as SLICER. i was like WTF is an air slicer
08:41 PM roycroft: well, color 3 is almost identical to color 2, with perhaps a wee bit more yellow
08:41 PM roycroft: and color 2 looks a wee bit greenish to be a good match now
08:41 PM roycroft: but i'm painting in the fabrication shop, which has cool white fluorescent lights
08:41 PM roycroft: and the machines are in the main shop, which has 6000k led light
08:42 PM roycroft: i'll need to take both the samples and one of the machines out in the sunlight tomorrow to really compare
08:43 PM roycroft: whatever matches best, i think i need to order a case of rattle cans of the stuff, so that when it's discountinued i can still match it in the future
08:43 PM roycroft: what i really need is to find a new automative paint shop that will match accurately and affordably
08:44 PM roycroft: i used to go to a ppg shop, and they would match any sample i brought in, by eye, and they were dead accurate
08:44 PM roycroft: and did not charge for the color matching - just for the paint
08:44 PM roycroft: and they would even make up rattle cans for me if i needed them
08:44 PM roycroft: but they're gone
08:45 PM roycroft: the two other automative/industrial paint shops i've used charge by the hour to do a match, with a 1 hour minimum, and neither makes rattle cans
10:20 PM flyback: <Tom_L> where's flyback when ya nee him...
10:20 PM flyback: <Tom_L> BMCC!