How to Reduce Resin Sticking to Silicone Moulds

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How Can I Reduce Resin Sticking to Silicone Moulds?

If you’ve ever had trouble popping your resin piece out of a silicone mould, you’re not alone. Sticking resin can be frustrating, but it’s usually easy to prevent with a few simple adjustments to your process and choice of products.

Use a Mould Release Barrier

Applying a specialist mould release product is one of the quickest ways to ensure easy demoulding. For example, a few drops of Silicone Oil for Mould Protection and Easy Release – 15ml directly onto your mould’s surface will create a barrier that helps prevent resin from sticking. This technique is especially handy for intricate or detailed moulds. Use a soft cloth or gloved finger to spread the oil evenly, let it settle for a moment, and then pour in your resin as usual.

Choose Quality Non-Stick Silicone Moulds

The quality of your mould matters. Professional-grade silicone moulds with a naturally non-stick, flexible surface, such as the Silicone Hexagons Mould, release resin much more easily than basic hobby moulds. Look for moulds described as reusable and heat resistant, as these features help maintain easy release and durability, even after multiple uses.

Correct Preparation and Curing Techniques

Sometimes, sticking happens if resin isn’t fully cured or the mould surface is damaged or contaminated. Ensure your resin has completely set before attempting to remove your piece. Regularly inspect and gently clean your moulds after use, avoiding harsh scrubbing or chemicals that might degrade the surface. For those making their own moulds, products like I–Gum Non-Toxic Silicone Putty are designed for reliable, non-stick performance out of the box, ensuring smooth demoulding with minimal effort.

When This Matters Most

Proper release techniques are particularly important when working with detailed moulds, very thin castings, or when mould longevity is key. Taking steps to prevent sticking saves you both time and materials, and helps extend the usable life of your favourite moulds.

Related guides

Why Does The Resin Stick To My Silicone Mould And How Can I Prevent It

Exploring these tips will help you achieve smoother, frustration-free results when using silicone moulds for resin. For more advice on troubleshooting resin sticking or mould care, see our main guide on why resin sometimes sticks to silicone moulds and how to prevent it.