What type of broach would you use to shape the inside of a hole?

An internal broach is specifically designed to shape the inner surfaces of a hole. This type of broach features cutting teeth arranged in a manner that allows it to remove material from the inside diameter of a hole, effectively creating the desired profile or finish. Internal broaches are particularly useful in applications where achieving precise dimensions and smooth finishes on internal surfaces is essential.

This tool is distinct from other types of broaches, like flat broaches, which are intended for shaping flat surfaces; roughing broaches, designed for the initial removal of larger amounts of material with a focus on speed rather than finish; and slotting broaches, which create slots or keyways. Each of these broach types serves different purposes, making the internal broach the ideal choice for refining the inside of holes.