Knowing which materials epoxy resin won’t stick to is essential for any artist, crafter, or DIY enthusiast working with resins. If you are casting, coating, or moulding, choosing the right non-stick surface or mould is key to success—preventing damage to your pieces and making demoulding simple. On this page, we compare top-performing non-stick moulds and putty solutions, guiding you towards the right products to use for flawless resin releases every time.

Key Surfaces Epoxy Resin Will Not Bond To

Epoxy resin tends not to adhere to certain materials, with silicone being the most reliable non-stick option. Silicone’s flexible, smooth surface and resistance to resin chemistry make it perfect for reusable moulds, trays, and forms. Silicone putties, such as “I–Gum” – Non-Toxic Silicone Putty for Mould Making, are purpose-built for creating custom moulds that ensure clean resin removal. Standard silicone moulds, found in our Silicon Rubbers and Artistic Design Moulds & Coasters categories, are also widely recognised for their non-stick performance. In contrast, resin may bond to many plastics, untreated metals, or porous surfaces—so always opt for dedicated non-stick materials for resin work.

Silicone’s Role in Resin Release

Silicone materials stand out for their inherent non-stick qualities. Artists choose silicone for its flexibility and reliability, making demoulding cured resin easy and protecting the integrity of creative work. From intricate detail to smooth coasters, silicone-based putties and moulds prevent unwanted adhesion.

“I–Gum” – Non-Toxic Silicone Putty for Mould Making

“I–Gum” – Non-Toxic Silicone Putty for Mould Making is specifically designed for creating custom, reusable forms where epoxy resin will not stick. The two-component putty mixes easily in a 1:1 ratio, with no strong odours and a non-toxic formula—so you can even work without gloves. Its exceptional non-stick characteristics make it ideal for casting unique shapes, intricate details, or for users who want to create their own bespoke moulds for resin, polyurethanes, wax, or cement projects. The superior formula ensures easy demoulding every time, streamlining your creative process.

Silicone Coaster Moulds – Ready-Made Non-Stick Surfaces

The “Four in One” – Silicone Coaster Mould, 21cm Diameter offers a smooth, professional finish with straightforward resin release. Its reusable, semi-transparent silicone composition means you can cast repeatedly without worrying about residue or build-up. This mould is easy to clean and is best used with heat-resistant resin for coasters or functional art pieces, ensuring professional results with minimal effort. Always avoid aggressive solvents and do not leave resin in the mould beyond the recommended 12 hours.

Triangle Tray Silicone Mould – 32x22x1cm

The Triangle Tray Silicone Mould – 32x22x1cm is ideal for those seeking a wider tray or geometric shape. Its silicone construction guarantees a non-stick environment for resin casting, so cured trays pop out cleanly. Like all high-quality silicone moulds, it is heat-resistant—from -40°C up to 210°C—making it compatible with a range of resin types and ideal for adding coloured layers, inclusions, or heat-resistant clear tops to trays and coasters.

“Pyramid” – Silicone Mould for Resin Casting, 11x11x6.5cm

For resin artists interested in 3D forms, the “Pyramid” – Silicone Mould for Resin Casting, 11x11x6.5cm presents a flexible, high-resistance silicone solution that does not bind with epoxy. This mould supports the creation of jewellery boxes or display pieces, and its easy-clean, soft silicone means there’s no need for extra release agents. Just ensure your cast resin is removed from the mould within 12 hours to maintain peak performance and prevent any accidental adhesion in fine details.

Choosing the Best Non-Stick Materials for Resin Projects

When working with epoxy resin, prioritising non-stick surfaces ensures your creations are easy to release and remain pristine. Silicone is consistently the most reliable and popular option, coming in various mould shapes, trays, and customisable putties. Whether you make coasters, trays, jewellery boxes, or bespoke shaped art, always use moulds and products purposely designed for resin. Avoid lingering resin in any mould for too long and keep to manufacturer guidelines for cleaning. Remember: aggressive solvents can degrade silicone over time, so rely on gentler cleaning practices.

Caring for Silicone Moulds

To maximise the life of your silicone moulds, clean only with gentle agents. Avoid aggressive solvents that may damage the non-stick surface, and remove resin promptly once cured. Consistent care will ensure flawless results across many casting projects.