Anyone in the Orchid community with experience using the below technique?
In the book Castellani and Italian Archaeological Jewelry I was fascinated reading in Chapter 7, page 185, about powdered solder for small filigree work. The small parts are glued onto gold sheet with gum tragacanth, or other organic substances, even saliva. Borax is then melted into glass and ground into fine powder. Fine gold solder filings and the fine powdered borax are mixed and sprinkled over the positioned sheet and wire components. This solder-flux mixture was kept in a special vessel known by the French term rochoir, which had a long spout with a serrated upper edge. Small amounts of the solder powder could be shaken out of the rochoir by running a fingernail along these serrations.
I am particularly interested in learning about this ancient method and making a rochoir.