John Mitchell

Many many variables must be considered before selecting a holemaking tool.

Getting the best material removal rate (Q) should be the goal of any 3-D milling operation.

A part’s configuration, coolant flow, cutting tool material, and cutting tool shape all play a role in surface finish.

Many shops today have discovered the benefits of high-feed milling, which uses extreme chip thinning to allow for feed rates of 0.080 in. per tooth and higher. Also, since the cutting forces created by high-feed milling are directed up into the spindle rather than perpendicular to the...