Moulding Plaster No.1 50Lb bag (220015)
A general purpose plaster suitable for architectural, art, and support shell (mother mold) applications. Packaged in 50 Lb bag.
Used for waste molds or temporary patterns where surface hardness and strength are not important. Screeds well under a template but is not as hard or strong as HYDROCAL cement.
Technical Properties: Use Consistency (70 parts of water by weight per 100 parts plaster) Dry Compressive Strength 2,000 psi Maximum Setting Expansion 0.200% Density Wet 99.0 lb/ft3 Density Dry 69.0 lb/ft3 Set Time (Hand Mix) 27-37 min.