Castaldo Silicon Jewelry Molding Rubber- Super High Strength-Strips-5 Lb Box WR Cobb Also suitable for rock tumbling

Also suitable for rock tumbling with silicon carbide and cerium oxide

Because of their fast cutting action

burnishers

Each steel die includes a forming shape and matching bed

or other chemicals

Castaldo Silicon Jewelry Molding Rubber- Super High Strength-Strips-5 Lb Box WR Cobb Also suitable for rock tumblingCastaldo Super High Strength Silicone Jewelry Molding Rubber delivers exceptional performance for professional jewelers who demand precision, durability, and efficiency in their casting workflow. This silicone mold rubber is engineered to be stronger than any other silicone molding rubber on the marketproducing complex molds that resist tearing and last through extensive use. Sold in a convenient 5 lb box of pre cut strips, it is ready to use straight