The point angle of a drill, for drilling stainless steel, is
A
90°
B
118°
C
135°
D
150°
Correct Answer: 135°
The point angle is located at the head of the twist drill. For hard materials such as stainless steel, the point angle should be large and e.g. 130° or 135°. For soft materials, point angles of e.g. 118° are used. With a large point angle, more of the cutting edge engages in the workpiece when drilling