I wish the ways on any of my machines looked that good!

tube... and probably the considerable amount more space inside the air bearing ;)

Is that a milling spindle being used as a drive motor?

why did i get recomended this (nice vid btw)

Not hearing Drew’s voice startled me

Yeah, right, its Iron man, pretending to be an experimental workshop, you watch, when these tests are done, he'll put on the suit on, and beat the shit out of everybody and establish world peace, I swear, don't be fooled. (LOL) you guys are amazingly genius.

🤓👍

Brilliant idea ! Perfect product 👌

Yeah I don't think that would be good for them bearings

I watched this whole thing and still have no idea what's going on here but I'd like to take this opportunity to thank my AI overlords for the suggestion.

these aren't meant to replace brake pads y'all, it's clearly specialty equipment where the value of this fail-safe more than pays for itself in what it's saving

so, they made a break pad that requires constant air feed, and when breaks, is a terrible break. i don't know how this is any better than normal breaks. they don't touch the discs when they're not breaking, so there's 0 wear, like the air bearings. just that you don't need air pressure

I would assume in an application like a power turbine the drawback to an air bearing vs an oil pressure lubed plain bearing would be it would not conduct heat away as well.

Would be interesting to consider this as design option - what is the pricepoint for such solution?

Yall, this isnt meant to be a primary braking system, of course brake pads will be better but this is a fail safe option if power or air pressure is lost these bearings are much cheaper compared to the whole of the machine

Ok, it is possible to not pressurize an air bearing so that friction occurs. But the application is not sustainable. Rust or grooves and the bearings start to rub and then it deteriorates very quickly. I can think of many more sustainable brake systems.

For maintenance where it only has to be used once a year, on equitment with a 15 year lifespan, i think these would work great. Waiting 2 hours for a flywheel to spin down is boring as hell.

Good Video but regular Brakepads do a better job

Fantastic, would love to see more of your production process

Should be titled "how to design for power failure." If your system doesn't slowly disengage after a power failure, fix it.

Yes, but how long can your bearings operate as a brake?

❤

That is really elegant!

Прекрасная работа.

I was at the local scrap yard last year and they had 2 Moore #3 machines there, they wanted $1500 for each one, sadly they had been outside for sometime. Both came from LLNL.

Impressive!

I am fortunate to have a 1952 Moore #2 out of Hanford plutonium production, the machine was set up by Moore for specific purpose. Still holds tolerance. Moore made vertical glass turning lathes and other special machines used at that site,, thanks for the video!

Thank you for sharing that

Mr Dan Gelbart - a very smart(genious) individual who has made a limited number of videos on utube and who I think owns several private businesses making extremely innovative things (like metal 3d printers) speaks of the Moore jig borer with reverence as it achieves incredible precision and can be these days bought for scrap prices - this is a fantastic channel for precision geeks.

As much as someone has built a good machine. It takes someone else to take care of the same machines 👍

I love this! Many thanks for posting, and it's clear to see why those Moore machines have such legendary status. Please make another video showing the machine being reassembled, tested and in use 👌👍

What an incredible machine! Thank you for showing this to us! Greetings from NH!

Very nice video. Thanks Drew, hope to see you at ASPE in Houston next month.

I can't image that spindle having less than 100nm runout with that belt drive on there. Very interesting! Thanks for showing it!

Thanks for showing us an amazing piece of engineering and craftsmanship

It would have been very cool to have a video of how you developed the "squareness" of the spindle... Have you seen Gena Bazarko channel?

It also looks like the people using this machine took very good care of it, managed to keep the surfaces pristine, kept chips and dirt out... And, that spindle seems "appropriate" for the base!

Thanks for the tour of a real "tour de force" of machine building! A good friend of mine had a SIP jig borer in his basement shop, fitted, for "belt and suspenders" accuracy, with an HP interferometer measurement system. He also had a precision 1440 divider ... Ah, the delightful work of passionate people!

What a piece of art.

What a great video to go along with Foundations of Mechanical Accuracy

Once again, Drew does a comprehensive explanation.

If dan gelbart is to be believed its not even just cast iron but the jig boring machines made by moore are made entirely from invar. Also i want to ad, its amazing that your videos are very informative and made from true passion for the subject, no just shameless advertisements!

Love being taught thing, by Norm MacDonald

What is the air pressure needed for the bearings?

Is it possible to use this system outdoors? Will it work even in rainy season and/or dust and other natural elements?

Cool! Very Cool!

Might be ok for trucks but cars you need a powerful compressor to run permanently which will drag power and add to the cost

I wonder what plasma cutting dust or powder coating powder maybe a few specs of metal from sparks will do to the performance would be cool if it blows it out of the way

It's amazing that it works just by pushing air through the porous graphite.

I'm amazed at how stiff the air film is, seems to defy intuition. Please correct me if I'm wrong, but is part of the secret or "magic" behind this tech the fact that the air in the gap is not only being compressed, but is restricted from exiting the gap, and this restriction or equilibrium between the the compression and "restriction" is what allows the stable/stiff air film to form? Is the restriction due to the particular viscosity of the air, or just more simply a result of geometry (i.e. too large for viscous effects to really matter). In the film, is the range of air compression still linear (following ideal gas law) or is it now exponential, and that too may be part of the magic perhaps? (less likely I think). Seems to me, and I may be very wrong, but it's as if there's a special regime of scale here where some particular physics are what's allowing the air film to be created, and exploited. Any Info is much appreciated, thanks!