Hydrostone, Gypsum Cement, (Concrete Substitute), FreeShip.
$8.86
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Gypsum Cement could be called "Super Plaster". It's similar to plaster in the way it's added to water, and how it mixes and handles when placing it. It's also chemically similar. But it varies greatly in one property, strength. It's much stronger and harder than plaster. There are different types, and they vary in viscosity and final strength. Hydrostone is one of the strongest ones. It has excellent duplication of fine detail, high compressive strength and a high density. Gypsum cement shares the basic principles as plaster mixing: Always add the cement to the water, never the other way around....(see more)
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