KISREL Resin Casting Powder 5000g – Fast-Cure Plaster, 20–30 min Demold, Smooth Paintable Finish

KISREL Resin Casting Powder 5000g is a fast-curing gypsum plaster designed for smooth, paintable casts from silicone moulds with a 20–30 minute demold window and full cure in about 2 hours.

Whether you make coasters, figurines, planters, or decorative details, this upgraded 5 kg package delivers a fine, odourless powder that mixes with water to form a creamy, low-bubble casting medium. It dries opaque white for easy colouring, accepts pigments or paints, and stands up to everyday decorative uses once sealed. The powder is formulated for simple measuring, fast turnaround, and clean surface results that reduce finishing work.

How do I mix KISREL Resin Casting Powder for reliable results?

Mixing is straightforward when you follow the recommended weight ratio and technique. Use a scale for consistent outcomes: 3 parts powder to 1 part water by weight,—adjust slightly for thicker or thinner pours. Stir only until evenly combined to reduce trapped air, then pour promptly into your silicone mould.

• Use a digital scale for accuracy: 3:1 powder to water by weight.
• Mix vigorously for about 2 minutes to achieve a smooth, lump-free slurry.
• Tap or gently vibrate the mould to help bubbles escape before the surface skins over.
• Add pigments, mica, or inclusions during mixing for integrated colour and effects.

What is the working time and when can I demold a piece?

The product sets quickly: you’ll usually see a firm surface in about 20–30 minutes and reach a practical demold stage within that window. Full mechanical strength develops in roughly 2 hours, after which pieces can be handled and finished more aggressively. Times vary slightly with room temperature and batch size.

• Demolding: typically 25–30 minutes under normal room conditions.
• Full cure: approximately 2 hours for handling and light finishing.
• Warmer environments shorten setting time; colder conditions extend it.
• Large or deep casts will require longer cure times—plan accordingly.

Can I colour, paint, or seal casts made with this plaster?

Yes. The plaster dries to an opaque white base that accepts pigments mixed in before pouring or water-based acrylics after curing. For durable surfaces and moisture resistance, finish with varnish, acrylic sealer, or wax. Surface preparation such as light sanding helps paints and sealers adhere evenly.

• Mix-in colorants: pigments, mica, glitter, or metallic leaf during mixing.
• Post-painting: water-based acrylics deliver bright, durable colour.
• Sealing options: varnish, acrylic sealer, or finishing wax for protection.
• Sanding: lightly sand cured pieces to smooth imperfections before painting.

Who is this ideal for? KISREL Resin Casting Powder 5000g suits hobbyists, small-batch makers, prop builders, teachers, and crafters who need a reliable, fast-setting plaster for silicone moulds and decorative projects. Its large 5 kg package is cost-effective for frequent use or multiple projects, while the neutral white finish and good dimensional stability make it a practical choice for both beginners and experienced makers. Keep moulds clean and follow recommended ratios and cure times for the best surface quality and long-lasting decorative results.