Resin Art

How to Remove Bubbles From Resin

Bubbles are one of the most frustrating resin problems, but they're very preventable. Understanding why they form is half the solution.

Why bubbles form

Bubbles usually come from three causes: resin that's too cold, mixing too fast, or not enough torching after pouring. Cold resin is thick and traps air, and aggressive stirring whips air into the mix. Warming your resin bottles in warm (not hot) water for five minutes and stirring slowly both reduce bubbles at the source.

Let it rest before pouring

After mixing, let the resin sit for about five minutes. This rest period lets the largest bubbles rise to the surface before you pour, so there's less to deal with later.

Torch the surface

Once poured, pass a heat gun or butane torch quickly across the surface. The heat brings bubbles up and pops them. Keep the flame moving and don't linger in one spot. For beginners, a heat gun is safer than an open torch.

Keep the surface clean

A fish-eye effect or surface defects can come from contamination. Wipe your work surface and moulds with isopropyl alcohol before pouring. Clean tools and a dust-free, level workspace go a long way toward a flawless, glassy result.