Linear Mold & Engineering is a provider of tooling for injection molds, compression molds, and any tooling required for proce ... ssing of thermoplastic resins. We are the largest North American privately-owned provider of 3D Metal Printing services, an additive manufacturing process used in the creation of functional metal parts for prototyping purposes, as well as creation of conformal cooled tooling inserts for production injection molds. Linear offers complete services from product design to tool design and manufacturing for any type of plastic product. We are a leading manufacturer of prototype injection molds, bridge tooling, blow molds, prototype parts, and serve a variety of industries, such as the automotive, aerospace, medical, military and many more. read more