Rob Renzetti chuck jaw refurb

[PeterT]

Very interesting demo & discussion, particularly jaw distortion, his jaw preloading method & remediation. Can't believe how hard turning can go through, well, 'hard' materials like that. Note his caveats on that subject.
Also mentions a related factor to consider if experiencing parting problems. It could be the usual culprits, or it could be jaw condition not holding work the way we hope its holding work.

 

[Susquatch]

Just goes to prove that old adage. "Everything moves in response to a force. It's not if, it's just how much!"

 

[Darren]

surprised to see him using a Shars indicator. Must be his knock around unit...

(not knocking Shars, but Robin typically has the best of everything, measures to the millionths)

 

[Susquatch]

surprised to see him using a Shars indicator. Must be his knock around unit...

(not knocking Shars, but Robin typically has the best of everything, measures to the millionths)

I have only one Shars dial test indicator. It is unlikely that I will ever get another. It was too "sticky" right from new.

 

[PeterT]

surprised to see him using a Shars indicator. Must be his knock around unit...

I noticed that too. He uses a B&S 0.00005" at 6:27. I thought maybe he was measuring 2 faces simultaneously hence had to grab a 2nd DTI, but I dont think thats the case either. He uses the Shars again for rod/jaw referencing. Not sure there, maybe someone will ask.

 

[Darren]

Shars has been sponsoring a lot of channels. Product placement wouldn't surprise me at all.