Caddman 3D uses the most common material for selective laser sintering (SLS 3D Printing) is nylon, a popular engineering thermoplastic beloved for its lightweight, strong, and flexible properties. Nylon is stable against impact, chemicals, heat, UV light, water, and dirt, making it ideal for both rapid prototyping and production. Nylon is a synthetic thermoplastic polymer that belongs to the family of polyamides. Its two versions commonly used for selective laser sintering are Nylon 11 and 12, or PA11 and PA12.

PA-poly amide is the abbreviation of polyamide, and the numbers represent the number of carbon atoms in the material. Both are similar in material properties, PA11 is slightly more flexible and impact-resistant, whereas PA12 is stronger, more abrasion resistant, and biocompatible.