resin

Syrupy polyester chemical compound, which is mixed with catalyst, a hardening agent, and spread across the surface of a fiberglass-covered surfboard to form a light, brittle, protective shell. Three types of polyester-based resins are commonly used, one after the other, in surfboard construction. Laminating resin is used to saturate the fiberglass; it contains no wax, and therefore can't be sanded...