A lot of new molding compounds have become available in the past few years. Are they better? How does one choose the best compound for the molding job at hand? This presentation is a survey and comparison of different mold cutting styles in various mold materials including rubber, silicone, and room-temperature vulcanizing (RTV). A disk-shaped pendant, stone-set ring, and a simple wide-band ring masters are molded in these various materials. Cutting styles are compared to reveal the best technique and material for each type of model. A demonstration of a novel RTV molding technique for small shops and modeling departments is included.

Author: Chuck Hunner