I dig out as much as I can with an ordinary lathe tool, then take the rest out with a boring bar, to save having a boring bar with the tool on the opposite side for getting at the hub, I move the tool past the hub and reverse the lathe rotation. As I have screw on chucks, I take very small cuts on the reverse cutting, OK so far. Most of my fly wheels are made in 3 pieces, so no recesses.
Ian S C
Edited By Ian S C on 15/10/2016 13:06:14