Plunge milling, also known as Z-axis milling, is one of the most effective methods for high-removal metal cutting. For curved surface machining, grooving, and machining with large tool overhangs of difficult-to-machine materials, plunge milling is much more efficient than conventional face milling. In fact, when a large amount of metal material needs to be removed quickly, plunge milling can reduce the machining time by more than half.
