Lightweight Hydrocal Casting Plaster, 104 cu. in.

Features: Special light weight casting plaster Use with rock molds to create different formations 1/2 gallon / 104 cubic inches Overview Lightweight Hydrocal has been specifically formulated for terrain model builders and is half the weight of traditional Hydrocal. Mix according to the instructions and pour into rock molds to create various formations. Also great for creating hard shell terrain and for filling in around rocks and other castings.