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Your approach to mixing resin has a significant impact on the presence of bubbles. Achieving a clear, beautiful finish starts with using the right technique from the very beginning.
Why Mixing Matters for Bubbles
Mixing resin too quickly or vigorously traps more air, leading to tiny bubbles throughout your project. In contrast, slow, steady stirring gently folds the resin and hardener together, minimising air introduction and helping create a pristine, glassy effect.
Best Practices for Bubble-Free Mixing
- Stir Slowly: Use a gentle, continuous motion when combining resin and hardener, scraping the sides and the bottom of your mixing container frequently.
- Choose the Right Tools: Opt for tools like the Anti Bubble Mixer for Epoxy Resin – Reusable Mixing Tool, which is designed to prevent unnecessary agitation and air incorporation.
- De-Gassing: Let the mixed resin sit briefly after initial stirring. This allows trapped air to rise and escape naturally before pouring.
When This Matters Most
If you’re working on projects where a flawless, crystal-clear finish is crucial—such as jewellery or deep casting—proper mixing technique becomes especially important to reduce finishing work and avoid visible flaws.
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Careful mixing is the foundation for a smooth, bubble-free epoxy surface. Explore more resin tips and troubleshooting at our main guide on how to avoid bubbles in resin.