Thanks for the information. Somewhere I have seen a dimensioned drawing
of a 3-C collet; if I find it I will get it to you. I suspect that you
are "skating" the tool tip on the chrome plate. You have to cut it off
with a shouldering tool or one that actually undercuts the plating.
You do know to make the collets in pairs? I think that I have the
procedure for turning them spelled out in an old English machining book.
Bill in Boulder "Engineering as an Art Form!"
