By far the most common material used in SLS, parts have good long term stability, offering resistance to most chemicals. It is harmless to the environment and safe to use with foodstuff. Complexity is irrelevant and the material delivers the impact strength and durability required for functional testing. Tensile and flexural strength combine to make tough plastic prototypes, with the flex associated with many production thermoplastics. It is able to emulate living hinge designs, certainly to 20+ cycles. The plastic material is non-hygroscopic, thereby negating the requirement to seal the surface on components being used with liquids.

This is the Glass Filled variant of PA2200. Providing greater rigidity, the glass-filled blend is perfect when prototyping rigid parts intended for production in advanced engineered thermoplastics, and is the right choice for functional testing. Form, fit and functional testing can now be completed without sacrifice. The filler is glass bead and not fibre. Hence the part predominantly increases in stiffness but not strength. Filler ratio approximately 40% by weight. Material is not hydroscopic or porous (given sufficient wall thickness), thereby negating the requirement to seal the surface on components being used with liquids.

This is a Polystyrene material originally conceived as a sacrificial master for investment casting purposes. In lieu of making a tool the CAD design would be manufactured directly in this material and the component then treated sacrificially as per wax in investment casting. For complex or short lead-time items, this can offer significant speed and cost savings. Subsequent work has highlighted how well this material functions as a master pattern for Vacuum Casting as an alternative to Stereolithography.

The manufacture of stiff parts of metallic appearance for applications in automotive (eg. wind tunnel tests or parts that are not safety-relevant), tool inserts for injection and moulding small production runs, illustrative models (metallic appearance), education and jig manufacture, among other aspects. Surfaces of parts can be finished by grinding, polishing or coating. An additional advantage is that low tool-wear machining is possible eg. milling, drilling or turning.