How Do I Remove Bubbles from Resin During Recycling?

Effective Bubble Removal Techniques

One of the most reliable methods for eliminating bubbles from freshly poured resin is to use a heat source. A heat gun or a gentle flame passed quickly over the surface helps air bubbles rise to the top and burst before the resin sets. It’s important to work carefully and avoid overheating, as excessive heat may damage the resin or surrounding materials.

• Hold the heat gun 10–20 cm above the resin surface.
• Move slowly and smoothly to cover the entire area.
• Repeat until no new bubbles appear.

Tips for Clear, Recycled Resin Boards

To further minimise bubbles, pour resin slowly to avoid trapping excess air. Mix your resin components gently—vigorous stirring introduces more bubbles. If you’re using a mould, ensure it’s clean and free from dust, which can cause additional imperfections. For projects with food contact, consider using a certified safe product like our EpoxyFood – Certified Clear Food Contact Epoxy Resin for Coating to maintain both clarity and peace of mind.

When Careful Bubble Removal Matters

Smooth, bubble-free finishes are especially important if your recycled boards are intended for display, gifting, or food service. Bubbles can compromise both hygiene and the overall aesthetic, so taking the time to remove them is worthwhile for professional results.