How does a broach differ from a traditional drill?

A broach is designed specifically for shaping and enlarging holes, which distinguishes it from a traditional drill. While a drill primarily removes material to create a hole, a broach does so by cutting and shaping the material over a length, allowing it to create a more precise and uniform enlargement. This process often results in a specific profile or geometry in the hole rather than just a simple circular bore.

Broaches are particularly useful for achieving specific dimensions and surface finishes, making them ideal for applications requiring high accuracy and consistency. The cutting action of a broach, which can involve multiple cutting edges along its length, enables it to produce complex shapes and features which go beyond the capabilities of a standard drill. Thus, broaching can be seen as a superior method in contexts where hole shape, size, and surface finish are critical.