Question: Suppose you wanted to drill a 1.5-in. diameter hole through a piece of 1020 cold-rolled steel that is 2 in. thick, using an indexable-insert drill.

Suppose you wanted to drill a 1.5-in. diameter hole through a piece of 1020 cold-rolled steel that is 2 in. thick, using an indexable-insert drill. Values for feed and cutting speed need to be specified by the student, along with an appropriate allowance. Is this the correct tool? What other drill types could be used?

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