Just a quick heads up for those who are looking for this elusive
creature. Progress Tools (progresstools.com) has them in a variety
of sizes. They are called something like " joint edge file". For
some reason they are not in the online catalog, or at least I
couldn’t find them, but they are available. Progress also caries a
really GREAT selection of fancy shaped mandrel for bezels, etc…
Hope this is of use to others.
Margaret (who is eagerly awaiting her new files)