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USG Ultracal® Brand 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. USG Ultracal 30 Gypsum Cement is noncombustible.


Normal Consistency (lbs. water/100 lbs. product) 33 - 38
Dry Compressive Strength 6,500 psi

Ultracal 30 Plaster

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