Which Moulds Work Best for Epoxy Casting?

Why Silicone is the Top Choice

Silicone moulds have become the standard for epoxy work because they are flexible, non-stick, and capture fine details with ease. Their smooth surface allows cured resin pieces to release cleanly, even from intricate shapes, minimising the risk of breakage or sticking. Compared to other materials, silicone offers long-lasting performance, especially when well cared for.

Materials to Avoid in Epoxy Casting

When selecting a mould for casting, steer clear of materials that are porous or absorbent, such as plaster, unsealed wood, or paper-based forms. These can bond with the resin, making demoulding extremely difficult and damaging your project. Even with a release agent, such materials rarely achieve the results of a quality silicone mould.

Buying & Usage Tips for Best Results

• Choose high-quality silicone moulds with a glossy interior for a professional finish.
• If making your own moulds, ensure the master template is free of defects to avoid imperfections in your cast.
• Allow your resin to cure fully before removing it from the mould to prevent stretching or tearing delicate designs.
• To measure and prepare your resin accurately, consider using a graduated measuring cup designed for epoxy projects.