Ultracal 30 Gypsum Cement – 10lbs

USG Ultracal 30 Gypsum Cement is designed for the patternmaking industry as the ultimate gypsum cement tooling medium. When extreme accuracy and greater surface hardness are required (as in duplicator models), use USG Ultracal 30 Gypsum Cement. It provides extremely low expansion properties, gradual set and a long period of plasticity.

Ideal for splash-casting molds and models for phenolic, polyester and epoxy resins, USG Ultracal 30 Gypsum Cement is water soluble – there is no need for organic solvents for cleanup.

• Sets 25-35 minutes after machine mixing
• Requires 38 parts water by weight per 100 parts plaster

WARNING This product is for making molds of clay and industrial patterns only. When mixed with water, Hydro Cal hardens and then becomes very hot. DO NOT attempt to make a mold enclosing any part of the body using this material. Failure to follow these instructions can cause severe chemical burns that may require surgical removal of affected tissue. Dust from this product may cause eye, skin, nose, throat, or respiratory irritation. Use eye, skin, and respiratory protection in accordance with good industrial hygiene practices.

Larger sizes available in-store only.