Making a standard 3 jaw chuck into a set-tru chuck

[Brian Rupnow]

I just watched this Youtube video while prowling around looking at youtube posts. This guy has turned his standard 3 jaw chuck into a set tru style chuck by addition of an adaptor plate. This looks really neat, and he seems to be satisfied that he can dial any run out down to zero. I'm not sure I would do that, but my lathe chuck has about 0.003" total indicated run-out, and it would be nice to get it to zero.---Brian

 

[Ghosty]

Brian,
When I refit a 3 jaw chuck, I blow out the scroll and chuck jaws and then mount a parallel test bar, with the use of a 0.0001" dial gauge, I can usually get it down to 0.0002", it does take some time though.
Cheers
Andrew