How to Prevent Resin Sticking to Silicone Moulds

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How can I prevent resin from getting stuck in my moulds?

There’s nothing more frustrating than your resin casting sticking to a silicone mould. Luckily, with the right preparation and tools, you can avoid this all-too-common problem and ensure a smooth release every time.

Cleanliness: The Key to Easy Release

Before you begin any resin project, make certain your moulds are dirt- and residue-free. Dust, old resin remnants, or oils left on the surface can cause adhesion and spoil your casting. Wipe the moulds thoroughly with Pure Isopropyl Alcohol 99.9% to remove both dust and oily residues. Alternatively, a specialist degreaser will ensure a spotless surface, especially when working with intricate shapes.

Providing a Protective Layer

Even impeccably clean moulds can experience sticking if the surface isn’t properly protected. By applying a thin layer of Silicone Oil for Mould Protection and Easy Release, you create a barrier that encourages the resin to separate cleanly as it cures. Simply spread a small amount evenly across the mould, making sure not to over-apply, as excess oil may affect your casting’s finish.

When Prevention Really Matters

Prevention is particularly important when working with detailed, expensive, or favourite moulds. Taking a few minutes to clean and treat your supplies each time helps protect against accidental damage and gets the most out of your tools.

Related guides

By following these simple steps, you not only prevent resin from sticking but also protect the longevity of your silicone moulds. For more advice or solutions to resin removal, visit our complete guide on removing stuck resin from silicone moulds.