Hydrocal - Silica Flour

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Product Code: HYDSIL

Hydrocal 5# - $14.95
Silica Flour 5# - $14.95

Hydrocal - Silica Flour
This tried and true mold mix combination for years.
Order separate or together, your choices are in the drop down.

Hydrocal is a high-strength gypsum cement with a low setting expansion. Adaptable to the productions of hard, strong, tough patterns and duplicator models. Has a shorter period of plasticity, stiffens more rapidly than B-11, and sets in about 15-20 minutes after mixing.

Silica Flour is a pure sand that is ground to a very fine particle size (wear dust protection always). When it is mixed with a plaster, such as Hydrocal, for mold making it adds strength and stability. Mix equal parts of Silica Flour and Hydrocal (by weight) for a intricate, durable, and inexpensive mold.

As with all plaster materials, you'll only be able to use this mold once. As with all dust producing products, please wear a dust protection respirator.

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Mold Making and Casting > Pourable Mold Material