In the manufacture of twist drills, the shank is joined to the body of

1.	In the manufacture of twist drills, the shank is joined to the body of the drill using
A.	spot welding
B.	TIG welding
C.	projection welding
D.	friction welding
Answer» E.

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In the manufacture of twist drills, the shank is joined to the body of the drill using

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