Face Mill Speeds and Feeds [Calculator, 45 or 90 Degrees?]
WEBApr 18, 2024 · Take a look at the angle of the cutting edge on the inserts. Yes! The angle is the angle of that cutting edge–45 degrees for the cutter on the left and 90 degrees for the one on the right. That angle is also called the lead angle of the cutter. And here are the optimal operating ranges for different shell mill geometries: