Toolroom Express - Rapid Injection Molding Company, Plastic Injection Molding Plastic Injection Molded PartsThe Right Part ... Right Now! Toolroom Express is a leading source... of custom Plastic Injection Molded parts for Low Volume, Quick-Turn projects. Our Rapid Injection Molding (RIM) service is economical, and provides true injection molded parts... ProductionSupport for bridge-to-production needs Low VolumeProjects where production tooling is not cost effective Rapid Injection Molding utilizing our value-engineered processes...