- Joined
- Jul 2, 2014
- Messages
- 7,594
I use all styles, that is what I have acquired over the years. The problem with a 6 flute countersink is that it needs to be fed 6 times as fast to get the same feed per flute as a single flute cutter. Most aluminum and plastics are easy, work hardening steels are another thing altogether.Do you prefer single flute bits or does it matter?