Do I Need Mould Release on Silicone Putty?

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Choosing the right approach for creating leak-proof moulds or resin barriers can make all the difference in crafting or repair projects. Many wonder if a mould release is necessary when using silicone putty. Here’s what you need to know for reliable, fuss-free results.

Why Non-Stick Silicone Putty Doesn’t Need Mould Release

Non-stick silicone putties, such as I–Gum, are formulated to naturally resist adhesion. This property eliminates the need for additional release agents when forming barriers or custom moulds. Simply shape the putty, and it will detach effortlessly from resin, models, or surfaces once cured—saving time and avoiding contamination.

Best Practices for Using Silicone Putty as a Barrier

• Mix the two components in a 1:1 ratio until fully blended for optimal results.
• Apply directly to clean, dry surfaces to form a tight seal, preventing resin from escaping cuts or edges.
• No washing of tools or release agents is required—making the process efficient and mess-free.

When This Matters

If you’re creating custom resin art, repairing edges, or casting items that require crisp details, using a non-stick putty means less prep work and easier demoulding. This is particularly valuable when precise line definition is needed—for example, with high-viscosity resins like Art Pro Deluxe that resist running.

Related products

• "I–Gum" – Non-Toxic Silicone Putty for Mould Making
• "Art Pro Deluxe" – Ultra-High Viscosity Epoxy Resin for Artists
• "UV–Creation" – Fast Acrylic Resin, 3 Minute UV Cure

Related guides

• How To Prevent Resin From Leaking From The Cut

Understanding when a mould release is unnecessary with quality silicone putty streamlines your resin work, reduces hassle, and ensures crisp results. Explore more ways to prevent resin leaking from cuts and achieve professional finishes in our main guide.