A 1/2 gallon carton of Lightweight Hydrocal® will yield approximately 14 medium-sized rocks.
The actual number of rock castings will depend on which Rock Mold is used and how full it is filled. For example, Rock Mold Strata or Classic and a 1/2 gallon of Lightweight Hydrocal will yield 8-10 full-pour rocks.
Hydrocal® is a U.S. Gypsum registered trademark.
Yes. You may use Earth Colors Liquid Pigment or any water-based paint (such as acrylic) or dye to color Smooth-It. Mix the colorant into the water before adding Smooth-It.
When adding colorant, the color of the plaster will not be as vivid as when painted. It will have a muted, chalky appearance. We suggest doing a small test area to ensure the color of the dried product meets your needs.