950 Palladium Finishing Procedures

This 950 palladium wedding band design was made using CAD/CAM design and model-making technology and features high millgrained edges, textured diagonal grooves, and a highly polished flat surface. The ring was finished from a rough casting using a progressive abrasive system and limited standard polishing techniques. The prefinishing and polishing system featured in this article can also be used after sizing any 950 palladium ring. To begin the process of prefinishing, sanding drums were made using Foredom's drum mandrels and an overlay of 3M's Imperial lapping film. The lapping film is supplied in PSA-backed sheets measuring 8.5 × 11 inches and is 3 mils thick. The drum portion of the mandrel measures 13 mm in length by 12.5 mm in diameter and is made of hard Teflon-like material. The shanks come in two diameters, 1/8 or 1/32 inch. To make the drums, the lapping film was
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