Choosing the Right Silicone for Moulds

Translucent silicone rubber gives you better visibility during the moulding process, making it easier to spot any trapped air bubbles or imperfections. For jewellery crafts like resin bracelets, opt for a product that cures fast and offers a fine finish, such as the “Pure Mould” – Translucent Liquid Silicone Rubber for Mould Making.

Step 1: Prepare Your Model and Work Area

Start by selecting or creating a model of the bracelet you want to reproduce. This can be an existing bracelet or a hand-sculpted prototype. Ensure the surface is free of dust, oil, or imperfections, as the mould will capture every detail. Set up your work surface with protective covering, and gather all necessary materials. Place your bracelet model in the centre of your chosen mould box, ensuring there is at least a 1cm gap on all sides for silicone coverage.

Apply a thin layer of mould release agent to the surface of your bracelet model and the interior of the mould box if required. This helps protect both your model and the finished mould, making demoulding straightforward and safeguarding intricate details.

Step 3: Allow to Cure and Demould

Consult your silicone’s recommended curing time before proceeding. The “Pure Mould” silicone cures in about 3 to 8 hours at room temperature, but always check your workspace conditions. Let the silicone cure undisturbed for the full recommended time. Avoid moving the box or disturbing the mould during this phase, as this prevents warping and ensures a detailed finish.

Once fully cured, gently remove the mould from the box. Carefully ease out the original bracelet model, taking extra care around intricate edges. If the mould release was used, demoulding should be straightforward. Use a flexible yet sturdy mould box for easier demoulding.

Tips and Troubleshooting for Mould Making

Using platinum-based silicones like the “Pure Mould” can significantly reduce shrinkage and provide excellent detail. Pay close attention to the mixing ratio and allow sufficient curing time to avoid sticking or deformities. If bubbles or imperfections occur, review your pouring speed and ensure a gradual, steady technique. Always use a suitable, non-porous mould box and mould release agent to extend the life of your silicone moulds and facilitate repeated use.

Caring for Your Silicone Moulds

Store your cured silicone moulds flat, out of direct sunlight, and away from sharp objects to prolong their life and maintain crisp bracelet shapes. Regularly cleaning with mild soap without abrasive tools helps preserve the non-stick surface and flexibility.