Point angle of 135° on drills is used for:
A. Bakelite hard rubbers and fibrous plastics
B. Hard steels and nickel alloys
C. Thin sheets metal
D. B and C
Answer: D
Point angle of 135° on drills is used for:
A. Bakelite hard rubbers and fibrous plastics
B. Hard steels and nickel alloys
C. Thin sheets metal
D. B and C
Answer: D
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