Exceptionally strong gypsum cement designed for stretch-press dies and producing cope-and-drag equipment. *Produces high-quality, indoor novelty and statuary castings that require extremely hard surfaces and superior reproduction of fine detail. Superior expansion vs. Hydrocal® A-11 or B-11 Gypsum Cements. *High water absorption resistance.MAIN FEATURES Hydro-Stone® Gypsum Cement is especially suitable where high strength and resistance to water absorption are necessary. It is ideal for applications in both the tooling & prototyping and art & statuary categories. Hydro-Stone® Gypsum Cement — For Tooling & Prototyping Hydro-Stone® Gypsum Cement is ideal for stretch-press dies where extreme surface hardness is required. Offering greater expansion than Hydrocal® A-11 or B-11 Gypsum Cements, Hydro-Stone® Gypsum Cement: Features a heavy, syrupy consistency, ideal for pouring into solid models or patterns (and making it ideal for filling multiple molds simultaneously) Adapts to most flexible moulding compounds, due to its high absorption resistance Sets in 17-20 minutes, after machine mixing Requires 32 parts water by weight per 100 parts plaster. NOTE — For best storage results, keep indoors in a dry, stable environment, away from drafts. Do not stack more than two pallets high.Hydro-Stone® Gypsum Cement — For Art & StatuaryOne of the hardest and strongest Hydrocal® products, Hydro-Stone® Gypsum Cement is used in the fabrication of high-quality art novelty and statuary castings. Offering excellent paintability, Hydro-Stone® Gypsum Cement:Can duplicate extremely fine detailsWorks well in plaster and most flexible moulding compoundsIs self-leveling, with low viscosityProvides fast set time for quick mold turns
