Smooth-On’s FOAM-iT! Series are two-component water blown rigid foams that are versatile and easy to use. Parts A and B are measured and mixed in equal amounts by volume. The mixture is then poured into a mold or other form (apply release agent if necessary). The mixture will expand many times original volume (depending on which FOAM-iT! product you are using) and develop a uniform cell structure. c All FOAM-iT! products can be used as a straight casting material, backfill material for hollow castings (adds structural strength) or as an encapsulation material, etc. They can be color pigmented with SO-Strong, UVO or IGNITE colorants and are used for a variety of art/ craft, industrial design and special effects applications.