Whether you are a hobbyist or a professional, choosing the right mould is key to achieving high-quality resin castings. This page explores the top options for resin moulds, from liquid silicone rubbers you can shape yourself to ready-made flexible silicone forms, helping you select the best fit for your resin art or functional projects.

Overview: Comparing Silicone Rubbers and Ready-Made Moulds

When it comes to resin casting, the most popular mould materials are silicone-based. You can choose between creating your own flexible forms using liquid silicone rubbers or opting for pre-made shapes such as hexagons and circles. Liquid silicone rubbers like “Pure Mould” – Translucent Liquid Silicone Rubber for Mould Making and “Liquid Mould” – Casting Liquid Silicone Rubber, 15 Shores 20.8 kg are ideal for creating custom and highly detailed moulds. For simplicity and consistency, ready-made moulds such as the Silicone Hexagons Mould – For Creating with Epoxy Resin – 24x21cm and Silicone Circle Mould – For Creating with Epoxy Resin, Ø 20cm offer durable, reusable options. Key differences lie in flexibility, reusability, heat resistance, and the level of customisation you need for your project.

See Different Silicone Moulds in Action

Watch the curing process of liquid silicone rubbers and explore how ready-made silicone moulds hold their shape and offer excellent detail for resin casting projects.

Find inspiration for your next resin creation by browsing our gallery of custom and standard mould types.

“Pure Mould” – Translucent Liquid Silicone Rubber for Mould Making

PLATINUM BASED TRANSLUCENT AND FAST CASTING LIQUID SILICONE RUBBER FOR MOULDS 
“Pure Mould” offers an easy-to-use, platinum-based translucent silicone rubber system designed for both professional and hobby use. Its formula provides exceptional detail reproduction, allowing you to observe your work through the mould, which is especially useful when embedding delicate objects or monitoring resin fill. This silicone’s 1:1 mixing ratio and fast three-to-eight-hour cure time enhance convenience.

Its mechanical properties ensure your moulds last longer and can be reused for multiple casts. Certified non-toxic, solvent-free and odourless, “Pure Mould” is suitable for epoxy, polyester, polyurethane, acrylic resins, plaster, cement, and hot wax. This makes it ideal for detailed, durable resin projects and candle making, offering reliability and high quality for intricate designs.

“Liquid Mould” – Casting Liquid Silicone Rubber, 15 Shores 20.8 kg

For those requiring larger quantities or even finer detail, “Liquid Mould” is a bi-component liquid silicone rubber capable of capturing the most delicate features and complex undercuts, making it suitable for jewellery, art foundry, and model reproduction. This formulation excels in scenarios where multiple reproductions are needed, such as producing a series of identical resin casts or working with intricate details like miniatures.

It requires the addition of catalyst before use, and its high mechanical resistance assures mould durability across a wide range of applications including resin, soap, polymer pastes, and waxes. With its ability to reproduce small details and withstand frequent reuse, “Liquid Mould” is an essential for professional studios and serious resin artists.

“Silicone Hexagons Mould” – For Creating with Epoxy Resin – 24x21cm

The Silicone Hexagons Mould is a ready-to-use option for makers interested in decorative resin pieces such as coasters and keepsakes. Made from flexible, professional-grade silicone, this mould is non-deformable, durable, and easy to handle. Its non-stick quality guarantees easy demoulding, while heat resistance between -40 and +210°C ensures compatibility with standard resin curing processes.

Perfect for encapsulating memorable objects like dried flowers and photographs, this reusable silicone mould enables both beginners and experts to quickly create uniform resin pieces with minimal prep and fuss.

“Silicone Circle Mould” – For Creating with Epoxy Resin, Ø 20cm

The Silicone Circle Mould is another pre-formed flexible silicone choice, specifically suited to round coasters and decorative objects. Its semi-transparent, professional-grade silicone is heat resistant, ensuring safe handling during resin curing. Like the hexagon mould, it offers non-stick, easy-to-clean convenience and will not deform over time. This mould is an excellent pick for consistent results in decorative resin art, especially where smooth edges and detail preservation are essential.

Tips for Choosing and Using Resin Moulds

Selecting the best mould for your resin project depends on your desired shape, level of detail, frequency of use, and type of resin. Liquid silicone rubbers are unrivalled for making custom, detailed moulds, while ready-made silicone forms save preparation time. Always ensure the mould is clean, dry, and free of any oil or dust before pouring resin, to guarantee a flawless surface and reduce the likelihood of blemishes. Avoid harsh solvent cleaning to prolong mould life and make the most of reusable silicone options for both creative and functional pieces.

Expert Recommendations for Resin Moulding

Choose the right silicone type based on project detail and frequency of use. Professionals often favour custom liquid rubbers for intricate or bespoke designs, while decorative hobbyists may prefer reusable pre-formed moulds.

Proper care, such as gentle cleaning and storage, extends the life of your mould and the quality of every resin cast.