04-04-2013, 01:43 PM
(04-04-2013, 09:50 AM)Mayhem Wrote: I never knew that a spiral tap would unwind.I find that a little hard to fathom too! Going by the hardness of HSS I can't see much "unwinding" beyond SNAP!
I love spiral point taps and if it's a blind hole I try to drill as much as double the depth I need to tap.
Busy Bee 12-36 lathe, Busy Bee Mill drill, Busy Bee 4x6 bandsaw, Homemade 9x17 bandsaw, Ad infinitum.