Tech Talk
What is the process of "Spade Drilling"?
Drilling operation in which a machine powers a cutting tool consisting of a holder and flat, interchangeable end-cutting blades. Spade drilling takes over where twist drilling leaves off; requires more power and a larger machine, but offers lower cost and greater rigidity. Large-diameter spade drills are used when trepanning is impractical or impossible. Spade drills are not, however, precision tools. See "Drilling".
