How to Remove Surface Bubbles from Resin Art Safely

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Gently Use a Torch or Heat Gun to Remove Surface Bubbles

Surface bubbles are a common challenge when working with resin for paintings and pour art. Fortunately, you can achieve a professional finish by using a handheld torch or heat gun to gently remove these imperfections.

Why Do Bubbles Form in Resin?

Bubbles can appear while mixing resin and hardener, or during the pouring process. Stirring introduces air into the mixture, and pouring onto a canvas or mould may trap some of this air beneath the surface. Left untreated, these bubbles can disrupt the smooth, glass-like finish that makes resin art so appealing.

Using a Torch or Heat Gun Safely

A quick pass with a torch or heat gun over your freshly poured resin will help bring bubbles to the surface and pop them. Hold the tool a few centimetres above the resin, moving it gently and steadily—avoid staying in one spot too long, as excess heat can damage your artwork or interfere with resin curing. A torch typically produces a direct, efficient flame, while a heat gun offers a gentler, broader heat. Choose the method that suits your confidence and project scale.

If you’re just starting, the “Raphael Kit” – Pour Paint & Resin Art Set with Neon Pigments and Canvas comes with beginner-friendly instructions that also cover techniques for achieving a smooth surface.

Tips for Best Results

Work in a well-ventilated area and follow all product instructions.
Wear gloves and ensure there are no flammable materials nearby.
Don’t overheat; remember it’s better to move slowly and repeat if necessary, rather than risk damage by lingering too long in one area.
If using coloured pigments or working in layers, apply heat between layers for optimal clarity.

When This Matters Most

Bubbles are most noticeable in glossy finishes and abstract resin paintings. If your project relies on a flawless, crystal-clear surface, taking care with bubble removal is especially important.

Related guides

How To Make Paintings With Resin

Perfecting your surface by safely removing bubbles is a key step in resin painting, whether you’re just starting or aiming for gallery-quality results. For more guidance on techniques and materials, visit our main guide on how to make paintings with resin.