If you only have a few mortises
to cut, you can always drill overlapping holes
and remove the ridges with a chisel. But for
projects that need a lot more mortises than
that, the chisel method quickly becomes unmanagable.
That's why we designed this versatile mortising
tool that you can build yourself - at far below
the cost of purchasing a conventional power
mortiser. It uses a conventional hand-held router
and a spiral (upcut) but to cut the mortises.
It's quick and accurate, making perfect fitting
mortises every time. This woodworking plan appeared
in Shopnotes magazine No. 47.