3" Round Silicon Mould

The 3-inch Round Silicone Mould is a clean, flexible casting mould designed for resin artists, hobbyists, and small craft businesses. Whether you are making epoxy coasters, decorative discs, or layered resin pieces, this mould gives you a smooth, bubble-free release every time. The 3-inch diameter is one of the most popular sizes for coasters and wall art accents.

Made from food-grade flexible silicone, this mould works with UV resin, two-part epoxy resin, and air-dry clay. The soft walls flex easily so your cured piece pops out without cracking or sticking — no mould release spray required for most resin types. Ideal for beginners and experienced crafters alike.

• Perfect coaster size: 3-inch diameter is ideal for tea coasters, fridge magnets, and decorative discs
• Flexible silicone build: Bends easily for clean, damage-free demoulding — no tools needed
• Smooth inner surface: Produces a glossy, mirror-like finish on the flat face of your resin piece
• Compatible with multiple mediums: Works with UV resin, epoxy resin (2-part), and air-dry clay
• Reusable and durable: Withstands repeated pours without warping, tearing, or losing shape
• Easy to clean: Leftover resin peels off once cured; rinse with water for clay or pigment residue
• Beginner-friendly: No mould release agent needed for standard epoxy and UV resin pours

How to Use

Place the mould on a flat, level surface before pouring. Mix your epoxy resin as per the manufacturer's ratio, add pigments or inclusions if desired, then pour slowly into the mould to minimise bubbles. Use a heat gun or torch briefly over the surface to pop any air bubbles. Allow to cure fully (time varies by resin brand) before flexing the mould to release your piece. For UV resin, cure under a UV lamp until fully hardened.

Safety Tips

Always work in a well-ventilated area when using epoxy or UV resin. Wear nitrile gloves to avoid skin contact with uncured resin. Keep resin materials away from children. Do not use this mould for food or beverage contact once it has been used with resin or chemical pigments.