A point angle of 135 - 150° on twist drills is used for drilling
A)Mild steel
B)Hard steels and nickel alloys
C)Cast iron
D)Bakelite
E)Plastics

Name: A point angle of 135 - 150° on twist drills is used for drilling A)Mild steel B)Hard steels and nickel alloys C)Cast iron D)Bakelite E)Plastics
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Question

Quizplus · Accepted Answer

Hard steels and nickel alloys require a point angle of 135 - 150° on twist drills to ensure the cutting edges engage the material properly, reducing the force required and improving the tool's life.

A Point Angle of 135 - 150° on Twist Drills