Intructions for Choosing Molding Material

MOLD MATERIAL            CASTING MATERIAL
Wax                      Low-exotherm materials -- polyurethane
                         and silicone rubbers and select resins
Alginate(Hydrogel®)      Materials that are not moisture sensitive
                         -- wax, plaster, silicones and select
                         resins and rubbers
Latex                    Concrete, plaster and select resins
Polyurethane             Most casting materials, except molten
                         metals

Silicone                All casting materials