The operation of making a cone-shaped enlargement of the end of a hole is known as Options: A . &nbspcounter-sinking B . &nbspcounter-boring C . &nbsptrepanning D . &nbspspot facing

Question

The operation of making a cone-shaped enlargement of the end of a hole is known as

Options:

A . counter-sinking

B . counter-boring

C . trepanning

D . spot facing

Answer: Option A

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