We have taken fine silver bezels and heated them enough to push into
hard carving wax. In this way, the investment holds onto the bezel
while the wax is being burned out, and the cast sterling ends up with
a perfectly fitting fine silver bezel attached to it. If the
mechanical bond is not perfect, solder can be flowed between the
bezel and casting margins, which is an awfully tight fit. We are
using bezels we make in the studio, preferring a heavier wall, maybe
22 ga. or thicker, which will probably hold up better during the
burn-out cycle than a thin commercial bezel stock.
This process has been done many times in our studio, and seems to
work quite well.