- Joined
- Dec 8, 2013
- Messages
- 2,651
You need an accurate hole. Drill 1/64" undersize and ream. Best to do both operations on the machine so finish the top end first.Drill what ever size shank you will be using
A brutal way to make it hold end mills would be to drill and ream a hole in the end of that taper and then hand-drill a hole in its side for a setscrew.