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Ships within 48 hours · Estimated delivery Sep 3 - Sep 8
Allow the mold to cure overnight (at least 24 hours) at room temperature (73°F/23°C) before demolding
For best results we recommend spraying the surface before it sets
hardness and cure speed
Hand Sanding
5044 Code Blue
Hydro-Stone® obsidian Allow the mold to cureAVAILABLE IN 5, 25, AND 50LB OPTIONS IN THE DROP DOWN USG Hydro Stone Brand Gypsum Cement is an excellent product for manufacturing solid cast architectural, art novelty and statuary products. USG Hydro Stone Gypsum Cement is extremely hard, has high compressive strength, and has high water absorption resistance while giving extremely fine detail duplication. MIXING INSTRUCTIONS Use potable water at temperatures between 70 F (21 C) and 100 F (38 C).
