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The point angle of a drill, for drilling stainless steel, is
Answer & Solution
Correct Answer:
Option
C
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
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