How to Stop Bubbles in Resin Logs

Clear, bubble-free resin logs require some care, but a few key steps will help minimise issues and deliver a beautiful, transparent finish. Here’s how you can keep bubbles at bay when making a resin log.

Seal the Wood First

Timber tends to hold air that’s slowly released into the resin—especially if it’s dry or porous. Before pouring resin, brush a thin coat of the same resin onto all wooden surfaces and allow it to cure. This sealing layer prevents air from escaping into the bulk pour, reducing the chance of bubbles forming.

Choose a high-quality deep pour resin that suits your project depth, like Epoxytable 10-Ten for large, thick logs.

Mix Carefully and Pour Slowly

Mix your resin and hardener with a gentle, steady motion to avoid whipping air into the mixture. Once mixed, give the resin a moment to allow trapped bubbles to float up. When pouring over your wood, pour slowly and in stages. This lets any small bubbles escape rather than being trapped as the resin flows around the wood features.

Apply Gentle Heat to Remove Bubbles

After pouring, use a heat gun or a culinary torch, waving it lightly over the surface of the resin. The heat thins the resin surface slightly, helping bubbles rise and pop. Be careful not to overheat or scorch the resin or wood.

Always follow the manufacturer’s guidance on maximum pour thickness and curing times for your chosen resin.

When This Matters Most

Bubbles are most noticeable and persistent during deep-pour projects, like large resin logs or river tables. In these cases, every step to eliminate bubbles makes a visible difference to the clarity and finish of your project.

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How Do You Make A Resin Log

By sealing wood, mixing and pouring with care, and finishing with gentle heat, you can achieve clear, professional-quality resin logs. Discover more tips on crafting resin and wood projects in our main guide on how to make a resin log.