How to Pop Bubbles as You Go in Epoxy Resin Projects

Q: Methods for Removing Bubbles as You Work

Gentle heat: Use a heat gun or a kitchen torch on a low setting, keeping it moving above the surface to nudge bubbles to pop. Avoid overheating, as excessive heat can cause issues, especially in deep pours. Toothpick or pin: For surface bubbles, touch them carefully with a toothpick or pin to release the trapped air. Pour in stages: For deeper casts, pour in thin layers and address bubbles between each pour. Choose appropriate resin: Some resins, like the EpoxyTable 5-Five , are formulated with low viscosity to minimise bubble formation, making the process easier.

← Back to how to make objects with epoxy resin

Tiny bubbles often appear while mixing or pouring epoxy resin. Tackling them early is key to achieving clear, flawless results in your resin objects.

Why Do Bubbles Form in Epoxy Resin?

Bubbles can appear in epoxy resin due to air trapped during mixing, or when pouring over porous materials. Vibrations and temperature changes may also introduce or move bubbles through your project as it cures.

Methods for Removing Bubbles as You Work

Gentle heat: Use a heat gun or a kitchen torch on a low setting, keeping it moving above the surface to nudge bubbles to pop. Avoid overheating, as excessive heat can cause issues, especially in deep pours.
Toothpick or pin: For surface bubbles, touch them carefully with a toothpick or pin to release the trapped air.
Pour in stages: For deeper casts, pour in thin layers and address bubbles between each pour.
Choose appropriate resin: Some resins, like the EpoxyTable 5-Five, are formulated with low viscosity to minimise bubble formation, making the process easier.

Practical Tips for Flawless Casts

Mix slowly and thoroughly, scraping sides and base of your mixing container to reduce air traps.
If working with very detailed moulds or porous materials, pre-seal them to reduce bubbles rising from the substrate.
Let freshly mixed resin rest a minute before pouring, allowing some bubbles to float up naturally before you continue.

When This Matters Most

Bubble removal is crucial for clear objects, jewellery, tabletops or any piece where a flawless finish is important. Neglecting this step can result in cloudy spots or visible imperfections in the cured resin.

Related guides

How To Make Objects With Epoxy Resin

Learning to pop bubbles as you go is a vital part of making objects with epoxy resin. Attention to this detail helps you achieve truly professional results in your projects. For more tips, return to our main guide on how to make objects with epoxy resin.