Chopped Strand Mat is typically made from continuous strands of glass fibers that are chopped into shorter lengths, usually around 1 to 2 inches (25 to 50 millimeters). These chopped strands are randomly oriented and distributed throughout the mat. To hold the chopped strands together in a mat form, a binder material is used. The binder can be either a powder or an emulsion that is added to the glass fibers. This binder helps maintain the shape of the mat and provides some stiffness. Chopped Strand Mat is available in various weights and thicknesses, and the choice of weight and thickness depends on the specific application and the level of reinforcement required. Chopped Strand Mat is compatible with various resins, including polyester, epoxy, and vinylester resins.