Eating Oreos while measuring millionths doesn’t seem like it should happen at the same time haha.

@danielabbey7726

3 жыл бұрын

Yes, but those are special A-Grade flatness Oreos! (I'll bet Lance lapped them himself) 😁

@fishsandwich610

3 жыл бұрын

A rogue crumb was the blame in classifying it into B plate.

I remember one time back in 1973, I set a 100 lb. large cast iron angle plate on the 8x14 ft. granite plate. I turned around momentarily to grab something else, and out of the corner of my eye, I saw the angle plate floating over to the far side of the surface plate. After a quick Oh S#$!, I ran around the other side and stopped it just in time! I had forgotten about this until I watched your cool vid!

Awesome work Lance and Adam! Love the differential levels. Thanks for the shout out. ATB, Robin

Thanks Adam for sharing this, really inspiring... I felt like watching Discovery Channel back when it was worth something...

lol, "air hockey" at the end with what must be a 20-30 lb cast iron lap was pretty cool

Enjoyed this video because I worked in calibration for almost 25 yrs and had always heard how they did this but never had actually seen this process. Thanks Adam and Lance.

@millomweb

3 жыл бұрын

Except you need 3 surfaces to do it properly - and everything should have several days standing to get acclimatised to a climate controlled room at 20°C.

@Abom79

3 жыл бұрын

Pmailkeey, perhaps you can film some of your own videos since it’s obvious you understand more than anyone else. I mean, people know how to use inspection equipment and lap a surface but have no grasp on temperature values and changes? It Amazes me how folks can’t simply film and share the work they get into without being scrutinized by every single detail just because it wasn’t mentioned in the video. All across youtube all I see is “you’re doing it wrong....you’re doing it wrong....you’re doing it wrong...”

@millomweb

3 жыл бұрын

@@Abom79 "It Amazes me how folks can’t simply film and share the work they get into without being scrutinized by every single detail just because it wasn’t mentioned in the video." That is precisely one of the issues. The fact that proper techniques aren't mentioned. You have, in this case going to lengths to get excited about flatness and yet failing to include all the essentials to achieve what you're aiming for. Those that know have to mention it for the benefit of those who don't.

I love that every few months to once a year we get these kinds of videos of Lance doing things like this or of scraping, etc. Really shows the science behind the machine shop. Lance truly is one of the brightest!

@ROBRENZ Getting a mention, I love it. No reason he shouldn't hit a 100k subs by the end of the week. Lord knows he and his knowledge certainly deserve it. If you don't follow him and you value precision, you're doing yourself a disservice.

Hellow m. Lance m. Adam. Fantastic.... amazin job. I was working 45 years in machine shops the Last 30 in aerospace industry in Greece I make thousands parts dificault parts with close tolerance this video is near too me Congratulations. John Grizopoylos retired machinist From Greece

Hi Adam, I am a retired film sound recordist with almost 50 years experience. I think that the problem you are having is in the mini connector on the GoPro. There is a switch that is activated in the connector so that when you plug the connector in it disconnects the internal mic so there aren’t two signals going into the camera. The switch is just a metal whisker inside the connector that is very delicate and is easily bent so that there is no connection for either signal. This happens all the time and in a professional situation we just threw them away and got a new one. Is the Hero9 new enough that you can return it for a new one? The GoPros are great when they work but are notoriously unreliable for sound. I would suggest that when you get a working GoPro plug the mini connector in, tape it securely, and leave it plugged in permanently. My dad was a career machinist and watching your videos reminds me of going to the shop he worked in after school and hanging out. Please feel free to contact me if you have any other questions

@bobanppvc

3 жыл бұрын

You tasted and witnesed technology advancement

Back probably 45 years ago my Uncle worked at the Fiat-Allis experimental lab & he took me thru the place & they had a surface plate there that was as big as a king size bed of course as a 16 year old kid I didn't really understand when my Uncle told me it was really flat & used to test how flat a part was. But after watching this & your last video I'm amazed with the process of getting such accuracy. Thanks for putting out such informational vidoes.

Thanks for allowing us to see what has to be done to get a granite plate up to "A" grade. WOW!!

pretty cool, wish I was born with that kind of patience. Thanks Adam & Lance & John

That stuff is so amazing, the kind of stuff Tom Lipton would drool over. I enjoyed that.

I bet Lance takes the fizz out his cokecola so it's flat also LOL

Great video! My 4 year old now knows what a differential level and repeat o meter look like! That level setup looks slick! Thanks for sharing!

Great episode again. Learn something on your channel very time. Thank you to all

.00008" concave across that much surface, not bad; a well taken care of plate. As a Tool and Die Maker who specializes in Tungsten Carbide, .00008" is a football field in size and can make or break a precision fit, just like thermal expansion plays into the finished Dim. First video I've seen of a surface plate being resurfaced. I always look forward to my annual plate inspec/resurface. It is an old craft, usually passed from grandfather, to father, to son, and it's still done by the decades old process of the flat plate and silicon carbide. Not many companies out there doing this type of Craftsmanship. Of course, although not mentioned in the video, that granite plate quarried in the USA is a much better quality and harder plate than the "import" (without naming the sole source country of origin) plate. Great video Adam!

@seantap1415

3 жыл бұрын

ROBRENZ on YT has some awesome videos on that subject. Check him out if you like super precision stuff.

@vp7101

3 жыл бұрын

@@seantap1415 Thanks for introducing me to Robrenz, I am now subscribed. He's a true Toolmaker with so much knowledge. It would be the opportunity of a lifetime to for anyone to apprentice under him. He's a dying breed in our modern world.

@seantap1415

3 жыл бұрын

@@vp7101 Your very welcome.

Who knew there were professionals that did that kind of work. Glad you showed us Adam.

Very interesting. Blows my mind talking about 80 millionths and 200th of arc second 🤯

Very cool to watch. It feels like one of those things that's half precision science and half dark art :-)

Complex yet surprisingly straightforward process-with the right tools.

Thank you Adam I always enjoy watching your videos I am from South Africa

I reckon your surface plates should be in a climate controlled room at 20°C for 7 days before they were measured or worked on. You need 3 flat surfaces to ensure flatness. 2 flat surfaces may be equally curved - one concave, the other convex. The third plate is used to remove that curvature.

@MF175mp

3 жыл бұрын

The 3 plate method is entirely different thing. There you're working all 3 plates to be flat. Here the diamonds are embedded to the cast iron so only the granite plate wears significantly and the surface is mapped for valleys and highs by measuring which isn't necessary with the 3 plate method.

Thanks for sharing this Adam! Awesome equipment Lance. It doesn't seem like much to doing this but the precision of the laps, abrasive used, and most importantly having the inspection equipment to gage the work brings it all together. Robin was able to use his repeatometer the moment he had a proven surface in that optical flat. Great work you guys, Thank you! Phil

I'm not even a machinist or want to be one but the science behind all of this is amazing.

Way outta my pay grade,Thanks for allowing us to look over your shoulder🤔

Great job 👏 love when you and Lance get together, I just sit back and say,you gonna learn today boy

Hello Adam, Very interesting to see Lance doing the mapping of the surface plate and subsequently lapping it, thanks for sharing. Take care. Paul,,

Excellent description of what you guys were doing. Thanks.

This is all amazingly fascinating, something I'm lucky to see thanks to you.

This kind of stuff is amazing to watch. I love precision work.

I find this so fascinating, and I'm loving the explanation that goes along with it. Thanks so much!

Thanks for sharing with us Adam, pretty slick 👍👍👏🏻👏🏻

Fascinating look into a process many of us can only partially comprehend!

Fantastically amazing process and knowledge.

Rest your hand on the plate for a few minutes and the flatness will go to he!! All of these measurements at those levels are temperature sensitive. You have to leave that plate in a controlled temperature room for a week (if not longer) to get consistent readings. Place I worked at 40 years ago had a surface plate and all I had on it was a height gauge. I used to measure across drawn stampings and if I'd had geometric tolerancing my best reading was probably 0.020. I was a rookie engineer and really didn't know what I was looking at. Thanks for posting Adam, I learned something new today

@MsKoffeinjunky

3 жыл бұрын

Granite has a really low thermal expansion. Their 80millionths are 0.002mm that's actually the standard for granite measuring plates. You can buy plates for a few hundred bucks with this precision, you even get a calibration certificate for it, which is created with even higher standards. We do precision grinding to with 0,001mm tolerances regularly at work, these parts get measured at one more decimal to ensure the quality. It's just their crazy measuring system what makes it sound incredible precise.

@easternwoods4378

3 жыл бұрын

@@MsKoffeinjunky Thanks. That job I had was fresh out of school. I was the only technical person in the company and learning practical skills on my own. Learned a lot back then and still lean on the knowledge. Learn a lot from Adam too

Love the content as usual Adam! Always love when you and Lance get together. I have learned a ton from both of you.

The science of flatness. Interesting!

@millomweb

3 жыл бұрын

No mention of the fact you need three flat surfaces to get true flatness. Using 2 surfaces produces 2 curved surfaces, one concave, the other convex.

Very cool video. Thanks for sharing

Absolutely love your videos dude, I look forward to them because they're not 5 mins long very in depth and I look forward to the little Abom79 notification on my phone throughout the week

This level of precision is amazing. Lance is such an incredible resource for this.

Really interesting video and learned about new things. Love it

Now that was very informative, thanks!

Man johns shop is so nice so many toys

That is so cool. That plate is flat! I like it. I was explaining to my wife what and why to the best of my abilities of what a plate is for and why it needs to be flat. She understood the need to be flat! Such awesome tools one didn't know existed to make tools so precise. Good to see Lance, thank you John for the shop and Adam for a great video!

Great video and educational. TY

Thanks for sharing!

Wow, amazing how that lapping works.

Lance should try making telescope mirrors

Love this kind of stuff. Granite is relatively cheap, I can get a 3 x 1 meter slab of granite and have it diamond ground for under $1000. Then you can make a set of lapping plates and go to town.

@paulcopeland9035

3 жыл бұрын

You can not do that for $1000.

So cool that Robert Duvall is into lapping plates

I know why it's important to have a reference but I have no idea why getting to it is so fascinating, but here we are 20 minutes later. Thanks Adam and Lance !

What a great team

Oh shoot there’s a high spot right here! Never mind just an Oreo crumb

I would like seeing how the bar that the meters run on is made. Has to be super super precise.

@millomweb

3 жыл бұрын

The bar's got nothing to do with the measurements - that's just a guide to get a straight line across the plate!

So... this is roughly how I've surfaced aluminum heads... only I used 1/2" thick glass and wet/dry 400/600paper with pb blaster as lube. I add 10 then 25lbs (with the 600) to ensure the force is perpendicular to the surface. Everyone says it won't work yet it does. Steel gasket too.

@tonywilson4713

3 жыл бұрын

I've seen a few people use wet/dry paper on glass, but never for something like a head. Thumbs for the solution. 👍👍👍👍👍

@SamSeedy

2 жыл бұрын

How is that the same as this?

@joshuacowan6279

2 жыл бұрын

@@SamSeedy "roughly"

Great content thanks for sharing

Congratz on your new AA plate.

Great video, I always wondered how they tested the testing equipment.

@mannycalavera121

3 жыл бұрын

How do they test the testing equipment for the testing equipment?

@sanches2

3 жыл бұрын

3 semesters of metrology 18 yrs ago and i still cant't tell you for sure. hated this subject a lot :) newtonian rings, laser interferometers and such are some of the things that pop in my mind :) but there are reference plates that are created woth such tools and they are kept in air/ sand suspended, thermoregulated rooms underground and they allow only for people with ninjasuits and no oreos( i know from experience:) )

@millomweb

3 жыл бұрын

That's actually quite easy. All you need is a flat surface.

"80 millionths" that's some accurate measurement .

@MF175mp

3 жыл бұрын

Check out Robin Renzetti

@MF175mp

3 жыл бұрын

Robrenz on youtube, his latest video is about the same thing but he does it the next level like always

@gusmcgussy3299

3 жыл бұрын

Not really lol

@meeder78

3 жыл бұрын

That is 0.002mm if I'm right.

@millomweb

3 жыл бұрын

@@meeder78 7.8740157e-5 inches.

It really is like that bit from that Rick and Morty episode, except that no one had an existential crisis at the end. Maybe it wasn't flat enough?

Nice job Lance!!

Wow! That was amazing...:-)

Везде берет!!! Super!!! Thank you for sharing!

very nice!

Learned a lot, I know really nothing about surface plates before watching abom79. What is the price difference between an B surface plate to a AA plate. Amazed as to specialized measuring equipment. Love to learn more about it

Excellent video!

Super interesting video, Adam! Always wondered how surface plates get lapped back into the proper grade.

Working with stone is fun! Good luck to you!

Awesome stuff

I love the fact that they really use the shop paper and not just throw it in the bin clean. Our shop of 10 men burn through a 50€ worth paper roll in less than a week, i literally get my clean paper from the recycling bin.

Whole new meaning to flat now. 😲

Robin Renzetti (@robinrenzetti) ROBRENZ - KZread The meticulous man @Abom79 and Lance mentioned deserves a shout out! He has far fewer subscribers than he should, check him out.

@firearmsstudent

3 жыл бұрын

13:30 Check it out

WOW what a great vid

If it's not lawn mowers, it's power tools!! 😂

well learned something today, there is a measurement smaller than the proverbial gnat's behind!

Like #6 Thanks for the video!

OLD GUYS RULE

I work in a lab and I can't wait for our 3 surface plates to be lapped in March!

Thats awesome

Hey Lance old buddy old pal I have a 4x6 plate up here in Kentucky you can come check sometime if you need some cooler weather. :-)

@bcbloc02

3 жыл бұрын

@@jeffreylee7184 Keith hasn't asked and I think he wants to give it a go on his old Lucas. I offered to do it last year when I bored the cylinders but Adam wanted to do it. I am sure if Keith has trouble with it it likely will end up here. Usually only the lost cause stuff wanders thru my doors. LOL

I would love to see the calibration standard for the mapping tool. How it's done and require readings for in spec. operation. Very interesting video. Thanks.

@felixar90

3 жыл бұрын

They're levels. So you can put them on any 2 points. Then you turn them 180° around and you check if you hit the same value. I guess.

Johns shop seems like a cool place to work. He's not looking for a close to retirement employee is he? LOL. Great video Adam.

I love lance and abom content

Wow what an informative video that was, especially when he explained the pendulum in the magnetic field. That is one nice plate, pink granite I wonder where that was sourced/mined it sure is a nice plate. One thing I’ve learned in this game is you can always learn something new.

@robertbownes6718

3 жыл бұрын

Some of the granite for surface plates comes from various locations in New England. New Hampshire, Vermont, and Massachusetts all have a fair number of granite quarries. The pink comes from a particular place in Vermont iirc.

Of course in an upcoming video, you can link to Robin’s info site so we can watch it and learn form it too? This was a great edu video well worth watching.

Now technology advanced. I am retired mechanical engineer.in our days we know only blue matching only.Thank you for your video.I am happy to see advanced instrument for checking granite surface plate.i am from india.

@janusszakazu9318

3 жыл бұрын

Adam is the best ,and new technology today is that what we can dream about 30 years ago.

Fun fact: The calibration of the Shars plate cost four times what the plate did lol.

@juliusvalentinas

2 жыл бұрын

Only in America this nonsense is true, like medical doctors with inflated prices, at least you do not have to pay insurance. What if your government would empty your bank account by 9% of minimal monthly wage? for medical insurance? And then you had to bribe doctors to get actual help at the hospital? This is real in Europe, EU country Lithuania !

Nice work if you can get it.

I may have written about this before but at a job I had years ago working for a German Diesel Engine manufacturer (the US operation) we moved to a new building. Our "new" workshop was twice the size of the old one (as was the whole building)! There was a surface plate that I had never seen before. Had to be 4' x8' and five+ inches thick! Or whatever the Metric size was. First time I saw it "Hans" the shop manager was standing next to me and I ran my hand over it and noticed this gouge in it about an inch long and 1/4" wide and 1/8" deep. I said: "I'm glad I'm not the guy that did THAT!" Hans said : "He vas fired!" I was one of the few that was allowed in "his" shop other than the guys that worked there every day...

Thank you for another SNS Adam!

We have an old plat like this that we heat up slowly with scrap wood and cook steaks . take 10 hours to warm it up and will stay warm for days

@paulcopeland9035

3 жыл бұрын

“plat”???

Thank you for this - makes me wonder now How Flat Granite Counter Tops are for your kitchen or lab work. Very informative vid. Did not realize how critical the need for such accuracy was.

@erichansen82

3 жыл бұрын

Not very. I tried to be cheap and buy a 2x4 foot chunk of granite counter top that a customer had ordered but didn't pick up. I could find a few thousandths of variation just by putting it on mill table and running it back and forth underneath

She be flat as the fens , buh! Shout from Cambridgeshire UK :)

@millomweb

3 жыл бұрын

I broke a sprocket on my pushbike going up one of those big hills 7 or so miles outside of King's Lynn !

That measuring equipment is so sensitive that a fly whisker will change results

What is the name of that checking instrument

I thoroughly enjoyed this, always wondered how they got the surface plates so true. A lot of skill and patience involved. Thanks very much for sharing this. I assume the rotating of the cast iron plates as he goes over the surface is to allow for the irregularities of that surface.

@alexanderw6309

3 жыл бұрын

Check out Robenz channel as to how to rotate and move the plate

Need to take this equipment to Egypt!

Ya that Starrett Pink Panther Is MEOW!