Quote Originally Posted by WmRMeyers View Post
Actually, IIRC, on the Atlas, the bull gear has indexing holes, and a pin, come to think of it. And I can clamp the other chucks for the other lathes on a end mill holder that fits in that lathe, and make it work for all four of the lathes I currently own... You're not helping, Marv!
OK, allow me to not help a bit more...

You'll need to drill two circles of holes:

60 holes for maximum number of nice factors: 2, 3, 4, 5, 6, 12, ...

100 holes for dividing dials and such: 2, 5, 10, 25, 50, 100, ...