I recently ran across several references to a 'planemaker's float' as
a useful tool for making wooden planes. DAGS turned up a number of
references and even an article on how to make them, but nothing
describing how to use one.

The tool itself is a triangular-shaped rasp with coarse teeth and it
is apparently used to tune up the throat on a plane. But what exactly
does it do and how?

--RC
"Sometimes history doesn't repeat itself. It just yells
'can't you remember anything I've told you?' and lets
fly with a club.
-- John W. Cambell Jr.