How does an agate burnisher differ from a steel burnisher?
That reminds me of a non-jewelry question: Why do librarians use a
bone stick to "burnish" creases in paper?
The "bone folder" tool is really old. It dates back to the middle
ages at least. No one is sure if the book binders got it from the
leather workers or vice versa. Modern ones are often made of dense
Basically, for either use, it is the right degree of hardness and
takes the right polish to be able to crease leather or paper without
Ron Charlotte -- Gainesville, FL
@Ron_Charlotte1 OR firstname.lastname@example.org