Smooth-On’s FOAM-iT!™ Series are two-component water blown rigid foams that are versatile and easy to use. The mixture is then poured into a mold or other form (apply release agent if necessary). FOAM-iT!™ 8 is a unique, self-skinning foam with a finer, more uniform cell structure than the other FOAM-iT!™ products FOAM-iT!™ 8 can be cast in blocks as a machinable prototype modeling board.