The Compleat Sculptor
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Casting Product Index - Accessories Index
See also Gypsum Accelerator & Retarder

Ultracal 30

This super-strength product is recommended where extreme accuracy and greater surface hardness are required. It has the lowest expansion of any rapid-setting gypsum cement available. Ideal for splash-casting molds and models for phenolic, polyester and epoxy resins. Specially made for close tolerance tooling providing great hardness, accuracy and freedom from efflorescence of any gypsum cement on the market. Click here for MSDS.
  The mix-ratio is 38 parts water to 100 parts Ultracal by weight. The average setup time is 25-35 minutes when hand mixed.
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