Gypsum Powder
High whiteness, fine texture and high strength gypsum powder. Stable setting, easy polishing and perfect shaping for sculptures, models, art decorations and architectural molding.
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FAQs
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What affects the setting time of gypsum powder?
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Water ratio, room temperature, mixing speed and powder grade can affect setting time. Small test batches help confirm working time before larger casting.
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How can a smoother gypsum surface be achieved?
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Fine powder, accurate water ratio, clean molds and steady mixing help create smoother surfaces. Sanding after drying can further improve the finish.
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Can gypsum powder capture small mold details?
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Fine-texture gypsum can capture small mold details when the slurry flows well and the mold surface stays clean. Air release also affects detail quality.
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Why do gypsum castings crack after drying?
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Cracking may come from excess water, uneven drying, weak mold support or rapid temperature change. Controlled drying helps reduce stress.
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Can gypsum pieces be painted or sealed?
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Dry gypsum pieces can be painted or sealed after surface preparation. Sealers can reduce moisture absorption and improve coating appearance.
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What is the right water-to-powder ratio?
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Recommended ratio depends on the specific gypsum grade and target application. Testing helps balance flow, setting time and final strength.