Injection Mold Polishing | Texas Injection Molding

Gloss levels are typically specified as part of the cosmetic requirements of a plastic injection molded part. There are standards that have been developed and published by the Society of Plastic Industry for mold polish. The finishes range from a D1 - dull finish that is created by blasting the surface of the injection mold cavity with a dry powder and is relatively inexpensive to a A1 - mirror polish that is created by progressive polishing of increasing grit from stone to paper to diamond. Polishing the surfaces of the steel is labor intensive and is a real specialty. This video demonstrates the craftsmanship in hand polishing an injection mold cavity.