A fine additive that slows the setting time of gypsum, plaster, and cement products. Ideal for lifecasting and mold-making, it offers more working time and control without affecting final strength. Use sparingly—only small amounts are needed.
(€ 3.95 without 21% VAT)
MarbleCast Alpha Crystalline Gypsum – Standard Setting
MarbleCast Alpha Crystalline Gypsum is a professional-grade casting material formulated for exceptional strength, precision, and surface detail. Made from high-purity alpha hemihydrate crystals, it delivers superior density, smoothness, and minimal expansion, making it ideal for sculpture, lifecasting, mold-making, and decorative casting applications.
The recommended mixing ratio is 100 parts powder to 25–30 parts water, providing a workable, creamy consistency with excellent flow and detail capture. Allow the plaster to soak for 30 seconds before mechanically mixing for 1 minute to ensure even dispersion and minimal air entrapment.
This standard-setting formulation offers a beginning of set at around 10 minutes, end of set at 13 minutes, and a full hardening time of approximately 30 minutes, allowing ample time for precise application and finishing. Once cured, MarbleCast produces a bright, hard surface with excellent edge strength and dimensional stability.
Important:
Always weigh the water first, then add the powder to the water—never the reverse.
Setting times may vary with ambient temperature and water conditions.
MarbleCast ensures reliable, high-quality results for both artistic and industrial casting projects.
A fine additive that slows the setting time of gypsum, plaster, and cement products. Ideal for lifecasting and mold-making, it offers more working time and control without affecting final strength. Use sparingly—only small amounts are needed.
ULTRACAL 30 is a super-strength gypsum cement ideal for patternmaking, offering high accuracy and surface hardness with minimal expansion. Remember to weigh water first and add the powder to it. All times are approximate, influenced by water and ambient temperature.
High-quality gypsum for lifecasting, sculpting, and molding. Offers excellent detail reproduction and a smooth finish. Available in a 25 kg package, suitable for large projects.
High-quality, fast-setting plaster bandage ideal for lifecasting and SFX work. With a 3.5-minute working time, it applies smoothly, conforms easily, and sets into a strong, lightweight shell. Perfect for creating durable mother molds over alginate or silicone.
CALCAST® 200 is a semi-hard plaster combining cost-effectiveness with hardness. Ideal for casting decorative items, wall bricks, panels, and ornaments. Available for pick-up in Amsterdam. Note: Weigh water first, add powder to water. Times are approximate, affected by temperature.
High-quality, fast-setting plaster bandage ideal for lifecasting and SFX work. With a 3.5-minute working time, it applies smoothly, conforms easily, and sets into a strong, lightweight shell. Perfect for creating durable mother molds over alginate or silicone.
Cellona plaster bandage splints are ideal for making quick support shells on alginate, body double, or silicone brush-up molds, offering lightweight, sturdy, and easy-to-use reinforcement.
Instructions for using MarbleCast gypsum: Mix plaster with water, soak briefly, and mix mechanically. Set begins in 10 min and ends in 13 min with hardening by 30 min. Always add powder to water, not the reverse. Times may vary with temperature.
| Product | Expansion | Mix Ratio By Volume | Mix Ratio By Weight | Expansion | Weight | Mix Ratio | Set Time | Product Name |
|---|---|---|---|---|---|---|---|---|
| Gypsum Retarder | - | - | - | - | - | - | - | - |
| UltraCal | Lowest of any rapid-setting gypsum cement | 38 parts water by weight per 100 parts plaster | 50 lbs | Lowest of any rapid-setting gypsum cement | 50 lbs | 38 parts water by weight per 100 parts plaster | 25-35 min. | Ultracal-30 |
| PlasterCast | - | - | - | - | - | - | - | - |
| Plaster Bandage 5 roll Package | - | - | - | - | - | - | - | - |
| CalCast | - | - | - | - | - | - | - | - |
| Plaster Bandage Single | - | - | - | - | - | - | - | - |
| Plaster Splints | - | - | - | - | - | - | - | - |
| MarbleCast | - | - | - | - | - | - | - | - |