Stereolithography (SLA) materials are epoxy based liquid photopolymers that cure under a particular wavelength of UV light.

Direct Metal Laser Sintering (DMLS) materials are gas atomized metal alloy powders that are sintered into fully dense parts in 20 micron layers.

Selective Laser Sintering (SLS) materials are mostly nylon based powders. Some of these powders come from plant based sources, some petrochemical.

Fused Deposition Modeling (FDM) are real engineering grade thermoplastics that are extruded into wire filaments and extruded through a heated printhead.

Room Temperature Vulcanized (RTV) Cast Urethanes and Epoxies are thermoset plastics engineered to perform like thermoplastics.

Using most any billet alloy or plastic, parts are Subtractively Manufactured by CNC process.

The Hybrid process is a derivative of RTV tooling, which uses thermoset urethanes and epoxies for short-run manufacturing.

The injection molding process uses engineering grade thermoplastics commonly available from companies like SABIC and DOW Plastics.