| 摘要 |
<p>Applicable to hollow pieces (1) of thin precious metal made by electroforming after melting an interior base model interior and draining it via a breather hole (4), that has previously been galvanised with a coating of the metal. It consists of filling the hollow piece (1) via the breather hole (4) on an opening (2) with one or more resins (3) of different types until it solidifies, then cutting away the breather hole (4) and selectively filing sectors of the surface of the piece (1) and finishing the opening (2) to remove part of the precious metal to reveal the resin (3) inside. The piece thus made has resin (3) inside and on its surface it has sectors with resin (3) together with a thin layer of precious metal.</p> |
