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Air bubbles are one of the most common frustrations when making a wooden table with epoxy resin. Fortunately, there are proven steps you can take to significantly reduce bubbles and achieve a flawless, professional-looking finish.
Preparing Your Surface and Materials
Unsealed wood is highly porous and can trap air, which may then escape as bubbles during your epoxy pour. To address this, seal your wooden surface with a thin layer of mixed resin and allow it to cure before your main pour. This simple step locks in air and greatly minimises bubble formation. Always ensure your materials are at room temperature; cold resin or wood can encourage air trapping and slow bubble release.
Mixing and Pouring Techniques
Bubbles often start in the mixing process. Stir your resin and hardener thoroughly but gently—avoid vigorous whisking, which pulls in air. When ready to pour, aim to pour the resin in a steady stream close to the surface. For deeper pours, consider a product like EpoxyTable 5-Five, formulated to minimise bubble issues thanks to its low viscosity.
Releasing Trapped Bubbles After Pouring
Even with careful prep, some bubbles may appear during curing. Use a heat gun or a small torch, passed quickly over the resin surface, to help trapped air rise and pop. Do this shortly after pouring, and repeat as needed while the resin remains fluid. Avoid holding heat in one spot for too long, as this can damage the finish or the mould.
When This Matters Most
Preventing bubbles is critical for clear resin features, especially if you’re working with river tables or thick-pour projects where clarity showcases the timber underneath. Taking time to address bubbles ensures a smooth finish that truly elevates your table design.
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Taking a few extra steps to prevent bubbles not only improves the look of your epoxy resin table, but also helps your project stand the test of time. For a complete overview of resin table making, see our full guide on how to make a wooden table with epoxy resin.