Free shipping on orders over £29,85 
Shipping Tracking! 
Google
Facebook← Back to how to make a mould for a resin bracelet
When creating a silicone mould for resin bracelets, avoiding air bubbles is critical for achieving precise details and a smooth finish. Proper degassing is an essential step for hobbyists and professionals alike.
Why Degassing Silicone Is Important
Air bubbles can become trapped in your silicone mixture during mixing, leading to imperfections in your finished mould. These flaws may transfer onto your resin bracelet, affecting both appearance and quality. Degassing removes these trapped air bubbles, ensuring your mould captures fine details and produces professional-looking results.
Methods for Degassing Silicone Rubber
The most effective way to degas silicone is by using a vacuum chamber, which draws out air bubbles before the silicone sets. Simply mix your silicone and catalyst as directed (many, like the “Pure Mould” Translucent Liquid Silicone Rubber, use a straightforward 1:1 ratio), then place the mixture in the vacuum chamber for several minutes until visible bubbling subsides. If you do not have access to a vacuum chamber, you can minimise air by mixing gently and pouring the silicone in a thin stream from a height, allowing bubbles to release as the material settles.
Practical Tips for Better Results
- Mix your silicone slowly to reduce the introduction of air.
- Always pour silicone into your mould box from one corner, allowing it to flow and push air out as it fills detailed areas.
- Choose a high-quality silicone, such as “Pure Mould”, which is designed for capturing fine details and has low shrinkage.
When This Matters Most
Degassing is most crucial when your bracelet design has intricate patterns or textures. Air bubbles are less noticeable in simple shapes, but even small imperfections can affect decorative or transparent resin pieces.
Related products
Related guides
Paying attention to silicone degassing techniques can greatly improve the quality of your resin bracelet moulds. For more detailed guidance on creating your own moulds, explore our main guide on how to make a mould for a resin bracelet.