Bubble Removal: Techniques for Epoxy Resin

Why Bubbles Form in Epoxy Resin

Air can become trapped in resin during mixing or pouring, particularly in intricate moulds or when working quickly. Bubbles rise to the surface as the resin cures. If not removed, they may show as imperfections in your finished piece, compromising clarity or durability, especially for detailed jewellery or art work.

Effective Techniques for Bubble Removal

One of the most reliable ways to banish surface bubbles is to apply pure isopropyl alcohol (99.9%) directly onto freshly mixed or poured resin. Just a few gentle drops are enough to break the surface tension, releasing trapped air efficiently. This method leaves no residue and works well for both casting and coating.

• Slow, careful mixing can minimise air introduction.
• Pour at a low angle to further reduce trapped air.
• Using a low-viscosity resin, such as “Liquidissima” – Epoxy Resin For Creations & Jewellery, helps bubbles escape more easily.

When Bubble Removal Matters Most

Bubble removal is particularly important when working with clear resin projects, such as jewellery, river tables, and artistic coatings, where clarity and transparency are priorities. Even minor bubbles are much more visible in these applications, making careful bubble management essential.