cfellows said:If you look here, starting at reply #37, you can see some mods I made to my 3-jaw chuck which lets me adjust it for TIR, much like a 4 jaw chuck. I've also found that once I set it to zero TIR with a 1/2" bar chucked up, the TIR doesn't change much at different diameters... maybe a maximum of .0015" out to 3/4". Haven't checked any further.
http://www.homemodelenginemachinist.com/index.php?topic=9016.15
I find that I am using my mini lathe more and more for small, precision work and my modified 3-jaw chuck stays on the lathe all the time. I would highly recommend this mod for anyone wanting precision, repeatable holding of round stock for turning and boring. It's mitigated my need for an er collet chuck on the mini lathe.
Chuck
Hey Chuck,
Nice job on your mini lathe mods and attachments, that thing is all set up nice. Kinda similar to what I have, and its all I have to work with right now so I am limited to both skill and machine power. Next step is the 4J and then a milling attachment. Then I hope a mini mill in the next year.
Rob