Description

1. Wood hole-punching machine (also called hollow chisel mortiser),similar to a drill press in many respects, combines the cutting

of a four-sided chisel with the action of a drill bit in the center. The bit clears out most of the material to be removed, and the chisel

ensures the edges are straight and clean.

2. Square chisel mortising bits can also be fitted to normal drill presses using a mortising attachment.