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Making erasers using silicone can be a fun and creative DIY project, but choosing the right type of silicone is key to achieving flexible, reliable results. Here’s what you need to know before you start.
Why Not Use Regular Household Silicone?
Standard silicone sealants found in most households are formulated for caulking and sealing, not for craft or moulding applications. They may cure inconsistently and often lack the flexibility and fine detail needed for eraser moulds. These properties are crucial when you’re aiming for a smooth, clean finish and an eraser that works effectively.
Best Silicone Types for Eraser Moulds
For crafting erasers, it’s recommended to use platinum-cured liquid silicone rubber designed specifically for mould making. Products like “Pure Mould” silicone rubber are engineered for detailed replication and consistent curing. These formulations provide the flexibility and resilience needed for repeated use and easy removal from your mould.
- Translucency assists with precise positioning.
- Balanced hardness (shore rating) suits small, detailed items.
- Easy 1:1 mixing and fast cure times are ideal for beginners.
Practical Buying and Usage Tips
When shopping for silicone for eraser making, look for bi-component (two-part) kits or silicone putties that clearly indicate suitability for mould making and compatibility with multiple casting materials. Make sure to follow the manufacturer’s instructions regarding mixing, working time, and curing. Using products designed for the craft—such as “Liquid Mould” bi-component silicone or “I–Gum” silicone putty—will help you achieve smooth, reusable moulds.
When This Matters
If you want flexible, sturdy erasers or plan to make intricate shapes, the choice of silicone makes a real difference. Specialist mould-making silicone not only yields consistently better results but also prevents disappointments like sticky or brittle erasers.
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Opting for a true mould-making silicone ensures your DIY eraser projects are successful, flexible, and enjoyable. To explore more tips and techniques, return to our full guide on how to make erasers using silicone.