How to Remove Air Bubbles from Resin on Wood

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What Should I Do if Bubbles Appear in the Resin?

It’s common to spot small bubbles rising to the surface when pouring resin onto wood. Left unaddressed, these can spoil the finish of your project. Here’s how to quickly tackle air bubbles for a flawless, professional look.

Why Do Air Bubbles Appear in Resin?

Air bubbles tend to form during mixing, pouring or as the resin cures—especially when working with textured materials like wood. As resin settles, trapped air makes its way upward, creating visible marks unless removed.

Safe Ways to Remove Bubbles After Pouring

Once the resin is poured, use a heat gun or a small torch to gently pass over the surface. The warmth encourages bubbles to rise and pop, leaving a smooth finish. Avoid holding the heat source too close or keeping it in one spot for long, as overheating can cause scorching or uneven results. Instead, keep the tool moving steadily a few centimetres above the resin.

Apply heat shortly after pouring, before the resin starts to set.
Use careful, sweeping motions rather than holding the heat still.
Repeat if more bubbles appear as the resin settles.

The “River-Table” starter kit comes with detailed instructions, which include bubble-removal guidance for beginners.

When Bubble Removal Matters Most

Perfect bubble removal is key when clarity is important—such as with river tables, decorative coatings, and deep pours. Bubbles left in place will harden inside the resin, so take your time during this stage to achieve the best result.

Related guides

How To Apply Resin To A Wooden Board

Attention to detail with bubble removal makes all the difference in resin projects on wood. For further guidance on resin application, see the full guide on how to apply resin to a wooden board.