Materials for Resin Art Moulds: What to Use & Why

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Choosing the right material for your resin art moulds ensures your projects release easily and produce crisp, professional results. Here’s what works well for both hobbyists and experienced resin creators.

Silicone: The Top Choice for Mould Making

Silicone rubber is widely regarded as the leading choice for creating resin art moulds. Its flexibility and non-stick properties make demoulding straightforward while preserving fine details. Whether making coasters, trays or decorative pieces, silicone moulds can be re-used multiple times and handle most epoxy resins without issue.

Flexible for easy removal
Retains detail in textured designs
Resilient for multiple uses

Using Plexiglass and Release Films

For larger mould structures—such as trays, tables or box forms—plexiglass is often combined with an adhesive release film. A glossy release film, such as ‘Shiny Shield’, is applied to prevent the resin from bonding to flat surfaces. This method is popular for making custom, one-off moulds or formwork that can be disassembled after curing.

Ideal for large or geometric projects
Allows for bespoke shapes and sizes
Glossy films help achieve a smooth finish

When this matters: Project scale and repeat use

If you plan on casting the same item many times, a flexible silicone mould is most practical. For unique, one-off pieces like tables or large artworks, constructing moulds from plexiglass with a release film is a flexible, customisable solution.

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How To Create With Erika Resin Book

Whatever project you’re planning from the How to create with Erika resin book?, understanding mould materials sets the foundation for successful, creative results time after time.