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Accurate measuring and careful mixing are essential steps for anyone working with liquid silicone rubber. These actions directly affect how your mould cures and the quality of the final result.
Why Accuracy Is Vital
Most liquid silicone rubber products use a two-part system that must be combined in set ratios—commonly 1:1 or according to instructions. Adding too much or too little of either part can result in incomplete curing or a rubber that is weak, sticky or otherwise compromised. Accurate measuring ensures your silicone rubber cures completely and maintains its intended flexibility and detail-capturing quality.
Practical Tips for Measuring and Mixing
- Use digital scales or graded measuring cups to weigh or measure each component with precision.
- Mix components slowly and thoroughly, scraping the sides and base of your mixing container to avoid unmixed portions.
- For products like “Liquid Mould” – Casting Liquid Silicone Rubber, always follow the ratio and mixing time provided by the manufacturer to avoid problems with curing.
If you’re working with large batches or need crystal-clear results, consider using a pressure pot after mixing and pouring to help remove air bubbles introduced during mixing.
When This Matters Most
Precise measuring and mixing are particularly crucial when creating detailed moulds, moulds with undercuts, or when using fast-curing formulas such as translucent platinum-based silicone. In these cases, any error can impact the reproduction of fine details or the reusability of your mould.
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Following precise measuring and mixing steps will help you get the most from your silicone rubber, whether crafting jewellery moulds or industrial casts. Explore more about proper liquid silicone rubber use on our main guide.