The best way to describe the tool
in the photos is that it is a saw. I know, it does not look like
a saw but it is a saw I use to insert wooden stringing or
purfling into some of my projects.
I made it out of some scrap
mahogany, ebony, a screw, and some brass. One side inlay is
ebony and the other one was cut out of an old piano key.
It works better and faster than any
string router I have ever used.
The little saw that does the
cutting is lunate in shape and has teeth that face slightly
forward and backward from center.
The above photo shows it in use
with some stringing pressed into the very clean kerf it made.
James E. Price