Super Ball Rolling For The Lathe ( Instead of Sandpaper ) 

Thank you, I will pin your comment

I was actually wondering that. Thsnks.

It's called Burnishing

Wow, learn something new every day!

Considering the extremely small number of results on Google for that word, fescalise or fescalised (even when replacing the last s with a z), I highly doubt that. Further googling gives there was a company called Fescol that made thick electrochemical deposition so some people might have called it to fescolise parts but that's still very rare and it has nothing to do with the method in this video.

Yes

The first ball point pen was patented for marking lumber. I bet it was big.

Thanks 🙏

Thanks 👌🙏

To be more precise, when pressing bearings, support the same ring as you are pressing against and never let the force go through the rollers or balls.

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Well, its really not. Thats how ppl without a mill have been using their lathes for ages..

@@Thelemorf oh interesting, I've just never seen it done before

@@KingJellyfishII if you want to play in the big boy League you use a milling attachment so you get xyz axis

Sure ❤❤❤❤

Both sides of the scissor wouldn't have to be an identical ball, 1 side could just be an uncomplicated roller bearing.

I guess machining puts a lot more radial force onto the spindle than this tiny ball

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you're welcome 🙏

Thanks a lot my dear friend Sohrab 🙏❤️

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Yes ❤❤❤❤

Looks like he used a 629 bearing. That's a 9mm bore, 26mm od and 8mm wide.

That was my first thought too. I wondered if using a toolpost grinder to put a smooth radius on the outer bearing race, then polish it, would achieve a similar result, with less complexity. Mount it as you suggest, or in a fork, maybe?

Thanks a lot my friend ❤️🙏

That's no good... what will we do with the new tools we all made after watching this video! 😜

I ground up a shear tool for my lathe and it indeed produces a wonderful finish

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Nice idea for the backstop, but a bad way to ef up a bearing. Holding the wrong race when pushing in an oversized axle.

@@JaakkoF Quite right, fully agree.

A dual vee bearing by say Bishop-Wisecarver would better distribute the ball loads.

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It was Super Blue

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Yes - it's been done for centuries by horologists to make pivots smooth AND hard

Yes it case hardens a small amount but nothing like a true heat treat would.

I had this same question. I teach a Materials class at the University of Colorado. By deforming the surface of the material this way it would seem that stresses are intoduced into the crystalline structure that would lead to increased hardness at the surface itself. Different from case hardening where Carbon is added interstitially to the lattice itself. I might do work up a few samples in the prototype shop and run them through a Rockwell tester just to see what difference it makes. Probably wouldn't strengthen the material enough to change tensile/shear load capabilities, but for abrasive resistance it could be useful, as in a pivot joint previously mentioned.

@@user-hy4to2tk6v : I would be interested to know what you find. Could you post the outcome here, if it's not too long? That would be great. 👍

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Looks to me he’s using it as a guide to chuck in the bearing straight. The inner ring was completely unsupported and the force went through the rollers in a way they weren’t designed to handle. That’s a big no-no and can and *WILL* damage the bearing.

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Thanks 👍👍❤️

Nein, leider braucht man nur ein Kugellager und eine kleine Dtahlkugel 🙏

Thanks bro

Marrrd

7:14 Should have been a shouldered bolt.

Like a broken spark plug? Just saw another guy make a holder (M18 * 1.5) for that the other day! Totally doing it.

@@DrFiero link?

@@SergeiPetrov - boy am I glad RU-vid has a history function!!! Never would have found this again otherwise... ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-XRuKKchj7sk.html

What are you using to do the blueing/ blacking?…nice video

@@johnhall8455 - Probably want to post that as it's own comment, not a reply. Never get seen.

Absolutely true. Also, not putting force on the balls is good advice for life, in general.

Almost the exact opposite. Pissing in a whirlwind would get it everywhere. Metalwork might be your thing. Wordplay? Not so much.

@jamesbaker3153 precisely. A tiny amount of liquid scattered everywhere, but where it's needed. Pedanticism might be your thing. Common sense, not so much...

Turning produces peaks and troughs. The pressure from the ball or bearing bends the peaks over giving a more polished and larger surface area . It will reduce the diameter so you have to allow for this on your final dimension.