Standard for plaster casting.

Produces castings that are harder and stronger than ordinary casting plasters. Gypsum-1 reproduces fine details and gives a hard, chip resistant, smooth surface. Use for casting capitals, statues, moldings, medallions, and reliefs. When mixed with water 11 pounds yields approximately 1 gallon of casting plaster that sets in about 20-25 minutes. Color: white. It can be painted. This product is not recommended for exterior use or exposure to water.