Square hole chisel - Hollow chisel

With this drilling tool, you can make square holes using a so-called mortizing machine, similar to a pillar drill.

The tool consists of a square chisel and an internal spiral wood drill bit. The drill is used to make the required round hole and the chisel is used to punch out the corresponding corners at the same time using only pressure.

Our square hole chisel sets fit on a JET 701 mortizing machine, for example, which allows sizes up to 19 mm. On request, we can also offer you the matching mortizing machine.
An inexpensive tool for the efficient production of mortises or square holes. Mortising depth depending on hole cross-section: diameter 10 = 75 mm.
The set consists of 1 drill and 1 chisel of the corresponding size and is made of self-sharpening tool steel.