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Taking proper care when storing silicone moulds for resin casting helps maintain their shape, flexibility, and level of detail. Simple habits can prolong mould life, reducing the chance of warping or damage.
Why Store Moulds Flat?
Silicone moulds are designed to capture intricate details for resin castings. When left upright, bent, or resting on uneven surfaces, they can slowly deform over time, especially if gravity pulls on soft areas. Storing your moulds flat ensures they retain their original shape, which means more accurate results for your future castings.
Avoiding Sunlight and Heat
UV rays and heat can gradually compromise the durability of silicone, potentially leading to brittleness or fading. Keeping moulds out of direct sunlight—ideally in a cool, shaded spot—helps reduce premature ageing and keeps silicone flexible for longer. Some silicone rubbers feature improved resistance, such as the “Pure Mould” liquid silicone, but it’s still best to avoid unnecessary exposure.
Practical Storage Tips
- Place moulds on a smooth, flat tray or shelf, ensuring no edges hang over.
- Avoid stacking heavy items on top, which can compress the silicone.
- Keep the storage area clean and dust-free, as particles can stick to the surface and affect future castings.
- If storing multiple moulds together, consider using parchment paper between them to prevent sticking.
When Does Proper Storage Matter?
Careful storage matters most if you rely on your moulds for repeated, high-detail projects. Moulds for jewellery and decorative items are particularly sensitive to warping, so these benefit greatly from flat, protected storage.
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By storing silicone moulds flat and out of sunlight, you can achieve consistently crisp results for resin casting. For more techniques and best practices, explore our full guide on making silicone moulds for resin castings.