04-01-2015, 06:10 PM
Honestly, 1020 is probably good enough -- it's tougher than cast, and easy to machine.
Since you're machining away all of the mill face with your ratchet notches, you don't need cold rolled. If you choose hardened, you'll need carbide tooling to cut it.
Since you're machining away all of the mill face with your ratchet notches, you don't need cold rolled. If you choose hardened, you'll need carbide tooling to cut it.