/diy/ - Do It Yourself

I use ink then lightly remove it with calipers

>>1710599
>he doesn't have designated scribing calipers
Look at him and laugh.

>>1710607
That's how it's intended to be done.

>>1710599
what's wrong with that? they are disposable; ~$10 at your local harbor freight (and that's without a coupon)

imagine not having carbide tips on your calipers

I have my good dial calipers and then I have the ones that died on me or got dropped that I remove the dial from and use solely for scribing layout lines.

>not just eyeing it

>>1710599
>not having carbide tip calipers.
absolute scum.

>>1711157
>>1710694
Or you know, any form of moderate heat treatment hardening, maybe hard chrome plating or carburizing

>uses calipers

>>1710599
>Hey bro can I borrow
No.

>>1710599

>Hey bro can I...

No

>But you don't even know what I was going to say!

I do know. You're broke ass self was going to ask to borrow one of my tools, and in the process you'd probably rekt it. Which is why your broke and no one likes you.

>>1711611
>Hey bro can I put both my thumbs in your butthole bro
Who knows how many great things you missed by being rude?

>>1710599
>muh accuracy
Maybe you are using the wrong tool if you need such a precise and accurate measurement. They are made for this

>>1711622
No they're not. They're just convenient and it works, like using a ratchet as a hammer.

>>1711622
>This tool isn't accurate enough.
>I know! I'll use it in a way that makes it even worse!

Way back in the day during shop, there was this dude who used a file on a caliper.

Can't remember his reasoning, just the teacher's shouting.

>>1710599
>letting anyone borrow your tools
Anyone who picks up any of my tools means they are going to jail for theft or I'm dead and they are in my will.

>>1710599
>calipers
you mean digital adjustable wrench?

>>1711622
If they don't have carbide jaws they are not made for scribing.

>>1711623
They are made for this. The jaws are honed to a point and hardened because they are supposed to be used not only for measurement but also to scribe lines.

>>1711835
Holy fuck no, that's what a scale and actual scriber are for. They're hardened for abrasion resistance so they last more than a month rubbing against all sorts of metal and they have pointed tips for accessibility reasons. The only thing you should even remotely consider scribing with a caliper is very gently on aluminum or similarly soft materials. And if you're the anon that thinks calipers aren't precision tools, you need to stop buying shit ones. Mine is good to .0005"

>>1711603
this

>>1711787
kek

I did this last week with my wife's father's calipers.
He watched me do it and literally said "wow, you're smart. Never would have thought to do that."
I felt bad about doing it but I needed a line scribed.

>>1711849
You've never used a lathe have you?

>>1712487
Do you know what a divider is you retarded fuck? There's a hundred ways to scribe on a lathe that don't involve wearing down the tips of your caliper.

>>1710607
Isn't this literally what layout fluid is for? So you don't have to gouge into the fucking metal, just wipe away the fluid with the tips

>>1711603
Based

>>1711679
I've done this. Whenever the tips of my calipers got busted up by dropping them or something similar. Nothing wrong with it, as long as you don't touch the inside surface.

I don't like how every time I buy a new pair of calipers they're cheap and shity and they come with this fucking elaborate crazy protective case which is absolutely ridiculous what the hell do I do with this case do I throw it away I feel like a wasteful ass all but if I keep it it's fucking a noxious and use it too much room is completely unnecessary and it prevents me from using my tool

>>1713580
>every time I buy a new pair of calipers they're cheap and shity
So stop buying shitty calipers?

>>1711595
measure a hole
>protip: you can't

>>1713681
*blocks your path*

>>1710638
!?!?!
I am not letting you anywhere near my direct NIST certified measurement gear. there is a reason it stays in the calibration vault most of the year.
It cost Waaayyy more then ~$10

>>1713695
lol ok CIA calibration square standards

>>1710638
Everything is disposable nowadays....must be nice.

>>1711603
>Hey, Anon, can you measure this for me?
Sure, no problem
>Hey, Anon, can I borrow your callipers?
NO, fuck off.

This is the only correct answer.

>>1713690
Lel

>>1713580
It's even worse when they include a shitty looking tap drill chart on the back of the calipers.
Even fucking worse when they are in whitworth threads for some fucking reason.
WHO FUCKING USES WHITWORTH?!?

>>1715937
huh. so they do

>>1715937
>WHO FUCKING USES WHITWORTH?!?
People who work with threaded pipe almost anywhere outside the US.

>>1711140
>eyeing it
>not just closing your eyes and stabbing with your punch

>>1711140

>>1716548
faggot

>>1716552
Gee, you're neat.

>>1716563
>have regular job for client
>some 11 herbs and spices BS proprietary plastic
>tolerances to half thou or something, IDK lathe department does it, not us
>their shop never has the AC on, so in the summer it's always 95+ in there
"Hey yeah these parts are .004" oversize"
Literally every summer.

>>1716594
wouldn't that be undersize?

>>1716597
Yeah. Not to mention, if the lathe dept is not storing their measuring tools in a fridge between measuring, it will work out the same anyway.

>>1716597
>heating things makes them smaller

>>1716598
Oh the measuring tools would be expanded? Never thought about that, but I'm assuming that he's implying that the fancy plastic they're machining is the one with the more significant coefficient of thermal expansion. I guess you could have callipers and micrometers with the same coefficient of expansion as the workpiece, to mostly eliminate such errors.

>>1716599
If it was cut to 15mm at 35C, when it gets down to 20C it will be below 15mm. It's not like it stays expanded at 35C forever genius.
Though he also could have been referring to an internal bore being undersize.

>>1716548
Is that AvE's stick?

>>1716597
>>1716598
>>1716599
I mean the lathe department at OUR shop makes them. Our shop is climate controlled to at worst ~80 in the summer usually a bit under.
The client has an assembly shop and inspection room that is just left to bake in the summer heat so parts that were sized correctly expand in their sweltering shop.
>>1716603
>Though he also could have been referring to an internal bore being undersize.
No, it's the OD. We check it with ring gauges, the client has a CMM or something.

>owner got real pissed off one summer about it
>told them "You better have the fucking AC on when I get there"
>goes
>AC is on
>they put part on CMM
>.004" turned into .0002"

>>1711787
Kek

https://www.youtube.com/watch?v=saT1XPAI580

I would fucking kill someone if they fucked with my calipers

>hey bro can I use your plotter for something real quick

>>1716606
The second one. It's amusing.

>>1710638
>they are disposable
Yours may be disposable but not mine.

>>1713681
Yeah you got internal micrometers for that breh

>>1716598
We actually take the most used measurement tools out of the controlled room when it gets hot in the shop as most tools expand with the same rate as the workpieces.

Final measurement reports would get done in the morning. As then the tools and workpieces would be 20c

Calipers are consumables. I scribe with them all the time. I have a “good“ one and find myself using that to scribe most often because the points are sharp. I often thought about grinding the point to a more acute angle. I couldn't care less. If they are fucked up i deal with it or buy a new one. It's not like you can do a real measurement with them anyway. For anything better than a guess i will use a micrometer or similar. I find that scribe cringing pathetic.

Though that said i would never in my life abuse a borrowed tool like it is my own.

>>1717352
If you care about the precision from using micrometers over callipers, then you wouldn't scribe parallel lines with callipers anyway because of the cosine error.

>>1711611
Nobody likes YOU.

>>1717573
>for anything better than a guess I use a micrometer or similar
>ah ha! then why are you scribing with micrometers at ll, then?
The implication was clearly that scribing with micrometers is for low-precision tasks.

>>1711787
I... I've definitely had to do this once or twice.

>>1717621
yes but it's so low precision that you'd be better off using a proper right-angle scribing tool or engineer's compass, which would also last longer too

I inherited these from my grandfather . I think he worked at the old pitsburg tool plant, really well made

>>1716594
Every year one client needs us to thread the inside of a tungstent lightbulb filament. I just do it do not ask questions.

>>1717751
We also had a long time client all is to thread some pistol barrels. Stock pistol barrels. That stick out of the slide like 1/8 of an inch. It took a while to make him understand it wouldn't do what he wanted.

>>1716543
Ahhh a master!
>>1716606
Not a finer stick I know of..

>>1717573
I don't care for caliper precision at all. As long as it zeroes and closes properly it's fine. The cosine error of scribing is way less than the positioning error of a scale for scribing and certainly less than the error of the caliper. Everything needing more precision than that doesn't get scribed in my shop but milled by numbers of the dro. Micrometers i handle with care though. Never close too tight and i always wipe the faces with bare skin.

>>1717745
Have the exact same one, our grandpas must have worked together. But all jokes aside I use my calipers way more often than I thought I would. Getting a drill hole perfectly centered instead of just eyeballing it is so satisfying

Like bruh just use these

>>1717738
Unless you don't need much precision. A hundredth of an inch is plenty for most /diy/ tasks.

>>1718996
Minute-of-Sharpie

>>1710599
Dye and scribe with straight edge

>>1710599
Friend used to use these on packs of Pokemon cards in the store to see which ones contained holographic cards (thicker). XD

>>1719937
real bigbrain hours

>>1710599
Big fuckin deal. I used to use mine for picking up hot parts.

t. former surface grinder.

>>1719937
wew

>>1712493
Yes, and protip ; instead of shelling out for the blue dye, just use cheapy kids markers. Not the dry erase king, as they wipe with just finger pressue and never really dry. The cheapy markers do the same thing, but at a fraction of the cost, and you can put them in your pocket easier than the little toothpaste tube of dye.

>>1715396
>can I borrow you tools?
Sure, put your belt and shoes in the bag. You get them back when I get my unharmed tools back.

>>1719937
Didnt every pack come with a holographic?

Awl

>>1710599
"why is there blood on your calipers?"
"some guy grabbed 'em to use as a scribe"

>>1712019
Sarcasm is wasted on you.

>>1711787
Kek

>>1711595
Why would you use a precision clamp to measure stuff?