if the chuck fits wear it !

[peterl95124]

rather than remove the 3-jaw, insert MT3-MT2 adaptor, insert MT2 ER collet, pray everything is concentric,
I just chucked up the collet, turned out adequately centered and concentric !

 

[peterl95124]

pushing the limits of a bench top lathe making a flywheel !, yes that's a boring bar for turning the outside, and its mounted upside down with the lathe running backwards !