Craftsmen and manufacturers can purchase quality stamps such as "14K", "18K", "Sterling", "Platinum", and "Hand wrought" from their local equipment supplier. Several companies such as all craft will make a trademark stamp if a craftsman sends them a sketch of the insignia, name, or logo.
The metal to be stamped is placed on a polished steel surface plate and, with one firm blow of a ball peen hammer, the stamp is struck. The mark should be made where it will be clearly visible after all soldering operations have been completed. The stamp should be held firmly so that it does not move and cause a blurred image on the metal. If a blemish forms on the reverse side of the metal it can be removed with emery or pumice. Wax models can be hallmarked by pushing a warm stamp against the surface of the wax.