Total Guide to CNC Jigs, Fixtures, and Workholding ...
End mills are used to cut pockets, keyways, and slots. Two fluted end mills can be used to plunge into a workpiece like a drill. 2 and 3 flutes are generally for aluminum, 4 flutes is better for stainless steel. More flutes are better cutting, but come at a higher price. End mills with more than two flutes should not be plunged into the work.
