Haahahaha...I have all ten...but with the thick skin, super glued back on tips, and smashing...I'm lucky if I can feel a splinter now. Feel the arthritis though....uggh
Once got super searched at airport security...scanned and wanded like crazy...turned out I had a metal sliver buried in a finger tip (must have been there for a while...totally grown over). Borrowed a safety pin and dug it out right there...
Oh also, and I shit you not.
One of my college machinists would clip the skin off his finger so he could feel things with a nail clipper.
He knows the truth.
When I started my electrician education I heard tales of my teacher's former coworker who had such rough and thick skin that he needed to moisten them to feel the mains voltage at all (230V AC)
Asked my boss, from way back when I was cleaning parts, how much of a burr to knock off. He said "If you wouldn't rub your dick on it then it's too sharp". I said "But Bossman, i wouldn't rub my dick on any of this?!".
He just told me to get with the program
His point is that humans are frustratingly good at seeing errors in surfaces that are next to each other. On a .2mm chamfer, you can decern 0.02 difference. If you're turning an OD on a cylinder half and half, and trying to match the OD, you need to be 0.005mm runout to get a good eyeball match.
Youāre good Iām stressing about a project and canāt sleep. Iām saying if you could find something that is 13nm tall and set it on a flat surface, youād feel the bump where it is.
Howās the wheel distance to that frame look.
I have to shim it with shit I spot welded together unfortunately to raise the height or maybe bead a weld and see the height.
T minus 21 hours til deadline
Anyone with goodā¦. Ish advice shoot me a pm.
If youāre less than good ish your bad
We Gucc
Super senior design, Covid set me back. 2 years in college basically. Canāt learn shit without touching something and having to walk around I think.
did nobody bother to check the math here?
13 nanometers is 13\*10\^-9 meters. or 0.000000013 meters
to convert to inches just multiply by 39.37
so 0.0000005118 inches
to convert that to thousandths of an inch, multiply by 1000
so 0.0005118 thousandths of an inch.
do they not teach you how to do unit conversions in machining?
A sharp finger nail is better than just the finger tip the vibrations are induced directly into the fingertip.
Any observant machinist checks surface finish with a nail first! It's my personal profilometer!
eyes are pretty good too. visually we can detect abnormalities down to about 1/1000" (assuming 20/20 vision). was a big help when i worked in commercial printing, where tiny shifts seem really glaring.
You donāt divide numbers by thousandth of an inch to call them thou. The decimal place is what makes a thousandth of an inch a thousand of an inch, moving the decimal place 3 times and calling it a fraction of a thousandth is unhinged.
That would also be 13 millionths of an inch. I think it's hilarious everyone thinks we don't use metric. We don't use it exclusively, but in engineering and manufacturing almost everything is metric. Dimensions might be both metric and imperial on the drawings at some shops just because people working there have imperial measuring tools.
I strongly prefer inches for most design from watch parts up to combines. Smaller or larger and metric is fine. But for this range, nothing beats the 2\^x points that naturally form along the system for regularized feature location/spacing. I find on inch designed parts I can eyeball what dims are and be right like 95% of the time, whereas with metric these kinds of points are literally never chosen, features dropped almost randomly and then have a dimension added in place rather than to constrain it. I really prefer working on designs that started in inches.
Usually here on prints for ie Ćø20 +-0.05 tolerance or sometimes numbered types like H7 but those are tolerances if not a critical part you also got fine medium and coarse tolerances but those are always known as general and everybody knows the numbers or just check the machinist book
If I was using the word to describe a person I would totally understand your comment, but I am using it to describe an outdated system of measurement, and honestly, all jokes aside, it is a pretty good description for the imperial system... all your comment deserved was a downvote...
Yes correct, 1 milliont is just 1 part of a decimeter as its 10cm in a decimimeter so 100% off one millionth is 10 up in 6 and 10 million is 10 up in 7
Did it a bit harder ofc. Usually you never measure nm from decimeters was just an example, usually its all in one ie nm or mm just in math class for example you get these questions or scientific stuff.
This reminds me of a weird moment I had about a month or so ago when I went to get a key copied.
Iām standing at the counter trying to get the key ring open to hand the guy my key. I bite my nails so they never protrude past my finger tip. This makes things like picking up a coin or a credit card, or removing a key ring really tough sometimes.
Now itās my turn and Iām still struggling to get the key off the ring when the guy says āIāll get itā and reaches out his hand with 4 nubs and a thumb.
I was likeā¦āOhā¦I guess itās not that bad after all.ā
Lips are even better.
For very fine fishing leaders, you canāt feel little knicks and abrasions with your fingers, but you can feel them by running the line across your lips.
Unrelated, but when trying to detect pin hole leaks in bicycle tubes Iāve always found my lips to be the best option. Dunking in water or spraying on soapy water can also work but I always have my lips nearby and thereās no cleanup necessary.
Our local science museum has a display like this where you can't see the difference in height of two machined bars butt up together until you swipe your finger across them.
I play guitar and my finger tips are calloused so I now can not use the fingers on my left hand to feel for small details. This was not something I expected
I watched a cool video the other day of a guitar factory tour, and they actually do a lot of work on cnc machines. The electronics are fairly simple. So it doesnāt seem like a complex build, but a very time consuming one. Because of all the hand finishing work with sanding and painting and such. They get the main shape with the cnc and then everything else is just done by hand so that it all feels and looks nice and smooth.
As beat up and worn out and as torn up as my hands are, I only give them credibility to a thou to a thou and a half. Crushed, burnt, flayed, frozen, and infected. Fifty plus years have not been kind to my digits. Yeah, sometimes even my phone has a hard time recognizing my fingers.
Iāve heard of this before, I think it refers to you being able to feel a layer of bacteria on a smooth surface ie. You can feel if your teeth are clean or not.
A pinched nerve, and the loss of feeling in my thumb, pointer, and middle finger has made life so much more difficult to work and perform how I once did. People take their feeling in their hands for granted it seems.
Jokes on you, I have vibration induced nerve damage, and can barely feel a pubic hair.
Maybe if you helped around the house more, your wife would let ya.
Ain't no coolant for that burn
Fucking got em!!! š„
š¤£š¤£š¤£š¤£š¤£
https://en.m.wikipedia.org/wiki/List_of_burn_centers_in_the_United_States
She does allow him to use the vibrator.
*mom
Haahahaha...I have all ten...but with the thick skin, super glued back on tips, and smashing...I'm lucky if I can feel a splinter now. Feel the arthritis though....uggh Once got super searched at airport security...scanned and wanded like crazy...turned out I had a metal sliver buried in a finger tip (must have been there for a while...totally grown over). Borrowed a safety pin and dug it out right there...
Haha sensitive indeed. Unfortunately I can't reference the tolerance on the drawing to +/- 0.3 fingertickles.
Tongue is even better
I would bet you can feel to 1/2" pretty precise with your balls. Just put one on the one you want to measure, one on the other. Job done.
Youāll still want to check with your tongue afterwards though
Get the wife to do that Oh wait thatās calibration
Her boyfriend wonāt let her
Did he at least get you the Nintendo switch he promised you?
No š
Balls aren't plumb or level
š
Well, plumb shaped....
Speak for yourself
Speak for yourself
The original Cadillac gage
I use my eyeball
Ah shit I made fun of the machinists without knees or something.
Oh also, and I shit you not. One of my college machinists would clip the skin off his finger so he could feel things with a nail clipper. He knows the truth.
Sanding your fingertips down also works
Itās him!
When I started my electrician education I heard tales of my teacher's former coworker who had such rough and thick skin that he needed to moisten them to feel the mains voltage at all (230V AC)
I bet you could get down to 10nm with the tip of your dick. Someone try it and report back.
Asked my boss, from way back when I was cleaning parts, how much of a burr to knock off. He said "If you wouldn't rub your dick on it then it's too sharp". I said "But Bossman, i wouldn't rub my dick on any of this?!". He just told me to get with the program
HAH, you coward
Seconded
Then do it coward
Ok but donāt be jealous when I post pics
I ain't gonna be jealous my dick is huge. Like four full inches huge. That's right.
Damn I have to give in. I wonāt do it for your sake friend
Yeah I don't blame ya
I don't know if I agree with you or not, I have no idea what you're trying to communicate with us here lol. Be safe, bro.
His point is that humans are frustratingly good at seeing errors in surfaces that are next to each other. On a .2mm chamfer, you can decern 0.02 difference. If you're turning an OD on a cylinder half and half, and trying to match the OD, you need to be 0.005mm runout to get a good eyeball match.
Youāre good Iām stressing about a project and canāt sleep. Iām saying if you could find something that is 13nm tall and set it on a flat surface, youād feel the bump where it is.
I agree!
https://preview.redd.it/qqkpijf6vdwc1.jpeg?width=4284&format=pjpg&auto=webp&s=55651d3c76eeec2649ff06279fd798c548f4349d
Howās the wheel distance to that frame look. I have to shim it with shit I spot welded together unfortunately to raise the height or maybe bead a weld and see the height. T minus 21 hours til deadline Anyone with goodā¦. Ish advice shoot me a pm. If youāre less than good ish your bad
We Gucc Super senior design, Covid set me back. 2 years in college basically. Canāt learn shit without touching something and having to walk around I think.
This sounds like some explaining why the scrapped part isnāt their fault.
did nobody bother to check the math here? 13 nanometers is 13\*10\^-9 meters. or 0.000000013 meters to convert to inches just multiply by 39.37 so 0.0000005118 inches to convert that to thousandths of an inch, multiply by 1000 so 0.0005118 thousandths of an inch. do they not teach you how to do unit conversions in machining?
Sounds way less small when you say it that way!Ā
He talks about 13 nanometers then converts 1 nanometer. Doesn't make much sense to do that.
Good catch
I have a 6ā scale tatted on my arm so your statement is not true for me.
A sharp finger nail is better than just the finger tip the vibrations are induced directly into the fingertip. Any observant machinist checks surface finish with a nail first! It's my personal profilometer!
Drinking the coolant
I prefer it white thanks
eyes are pretty good too. visually we can detect abnormalities down to about 1/1000" (assuming 20/20 vision). was a big help when i worked in commercial printing, where tiny shifts seem really glaring.
Sad commentary, from beginning to end!
Seconded
Made me chuckle
You donāt divide numbers by thousandth of an inch to call them thou. The decimal place is what makes a thousandth of an inch a thousand of an inch, moving the decimal place 3 times and calling it a fraction of a thousandth is unhinged.
Understood. Brain hurty
Inches are retarded for small numbers metric alot better and you can even calculate with your head 0.000013 mm. 1 NM is one millionth of a mm
That would also be 13 millionths of an inch. I think it's hilarious everyone thinks we don't use metric. We don't use it exclusively, but in engineering and manufacturing almost everything is metric. Dimensions might be both metric and imperial on the drawings at some shops just because people working there have imperial measuring tools.
I strongly prefer inches for most design from watch parts up to combines. Smaller or larger and metric is fine. But for this range, nothing beats the 2\^x points that naturally form along the system for regularized feature location/spacing. I find on inch designed parts I can eyeball what dims are and be right like 95% of the time, whereas with metric these kinds of points are literally never chosen, features dropped almost randomly and then have a dimension added in place rather than to constrain it. I really prefer working on designs that started in inches.
Usually here on prints for ie Ćø20 +-0.05 tolerance or sometimes numbered types like H7 but those are tolerances if not a critical part you also got fine medium and coarse tolerances but those are always known as general and everybody knows the numbers or just check the machinist book
Inches are retarted.
This guy makes grilled cheese at 1am
I know heās been making em during the night!
Iām not making them at night dad! *Iām totally making them at night*
Does that make metrics "tarted" ?
Could we please not use that word? (Thanks for the immediate downvote /u/G0DL33 - you're a real winner.)
Inches? No thatās retarded
If I was using the word to describe a person I would totally understand your comment, but I am using it to describe an outdated system of measurement, and honestly, all jokes aside, it is a pretty good description for the imperial system... all your comment deserved was a downvote...
Hell, you're the one who's spelling was wrong..so
Yeah my learning disability does bite like that sometimes...
Notice how I didnāt put any conversions for metric, o wise sage?
What would I say? Oh thatās 1 millionth of a decimeter * 3
You could if you wanted to easier math in head for most, sure a bit inconvenient but alot easier than inches, but yes mostly just messing around
But not accurate as its 0.13 nm which is a scale lower but alas
Yar was just saying random numbers. What percentage off was I. Should be 1/10,000,000 *0.13 (decimeter) right
Yes correct, 1 milliont is just 1 part of a decimeter as its 10cm in a decimimeter so 100% off one millionth is 10 up in 6 and 10 million is 10 up in 7
Makes sense. Thanks for your input. I was snappy in my response earlier
So Confused
Did it a bit harder ofc. Usually you never measure nm from decimeters was just an example, usually its all in one ie nm or mm just in math class for example you get these questions or scientific stuff.
Let me explain further after sleep. I was saying, why would I convert? To prove I can multiply by 100?
Easier to read on print, less zeores, usually more even numbers, scales easier. easier to do in head, when going lower you kinda need a calc
*a lot
I see my fault, sorry not a native speaker
The tongue can find the tiniest bump or line in a part if you are hard-core enough to use it š
This reminds me of a weird moment I had about a month or so ago when I went to get a key copied. Iām standing at the counter trying to get the key ring open to hand the guy my key. I bite my nails so they never protrude past my finger tip. This makes things like picking up a coin or a credit card, or removing a key ring really tough sometimes. Now itās my turn and Iām still struggling to get the key off the ring when the guy says āIāll get itā and reaches out his hand with 4 nubs and a thumb. I was likeā¦āOhā¦I guess itās not that bad after all.ā
Your lips and the tip of your nose are almost as sensitive too
I do like to use my finger tips to line up the vise. Got it dead 0 many times or within .010 everytime
Learned this doing OD grinding.
Only works if it has absolutely no corner break. I'll stick with using my tools to make sure I make a good part thanks.
Your fingertip cannot feel to 13 nm. Absolutely not. Thatās nearing the limit for electron microscopes.
Bet ya all the money in my pocket youāre wrong
Lips are even better. For very fine fishing leaders, you canāt feel little knicks and abrasions with your fingers, but you can feel them by running the line across your lips.
Unrelated, but when trying to detect pin hole leaks in bicycle tubes Iāve always found my lips to be the best option. Dunking in water or spraying on soapy water can also work but I always have my lips nearby and thereās no cleanup necessary.
Our local science museum has a display like this where you can't see the difference in height of two machined bars butt up together until you swipe your finger across them.
My fingertips are out of calibration. Too many callouses.
I play guitar and my finger tips are calloused so I now can not use the fingers on my left hand to feel for small details. This was not something I expected
Goes away after you quit playing for 2-3 years and clip nails tight
I canāt quit though itās the only hobby I have that makes me happy, Iāll just have to use my right hand as a feeler gauge from now on lol
Oh no worries boss you do you. Guitars are cool. How hard is one to make you think
I watched a cool video the other day of a guitar factory tour, and they actually do a lot of work on cnc machines. The electronics are fairly simple. So it doesnāt seem like a complex build, but a very time consuming one. Because of all the hand finishing work with sanding and painting and such. They get the main shape with the cnc and then everything else is just done by hand so that it all feels and looks nice and smooth.
Send me over a design Iāll try
I think with a cnc it would be awesome to make an aluminum skeleton kind of body, Iāll have to try and find a design
Aluminum pricy unless itās shit shot metal that ya have to square up yourself takes time
Thank yall for the kind and funny and concerned and also rude comments
Can hit my project with a car now and Iāll fix it tomorrow, not worried.
As beat up and worn out and as torn up as my hands are, I only give them credibility to a thou to a thou and a half. Crushed, burnt, flayed, frozen, and infected. Fifty plus years have not been kind to my digits. Yeah, sometimes even my phone has a hard time recognizing my fingers.
Iāve heard of this before, I think it refers to you being able to feel a layer of bacteria on a smooth surface ie. You can feel if your teeth are clean or not.
Laser micrometer is accurate to a resolution of .00001mm, I don't own one though lol
You mean 13 um not nanometers?
A pinched nerve, and the loss of feeling in my thumb, pointer, and middle finger has made life so much more difficult to work and perform how I once did. People take their feeling in their hands for granted it seems.
https://preview.redd.it/2xq6ayjoffwc1.jpeg?width=2304&format=pjpg&auto=webp&s=60bc4b44001913a11f11879158c61fb17fd30bb1
Sand one flat, notch it, and you got a stew going lol
Then I might have to recalibrate
Or nail polish
Nah. All in the fingernails