Resinoid Home commutator, slip ring, plastic, thermoset, thermoplastic, molding compound, custom molding, phenolic, transfer molding, injection molding, insert molding, compression molding, plastic molding, engineered plastic, Resinoid Resinoid Engineering is a thermoset, thermoplastic custom molder. We do injection, compression, transfer, and insert molding. We also produce engineering grade phenolic compounds. We mold commutators, slip rings, and custom moldings.