How to Avoid Bubbles and Warping in Resin Art

Best Practices for Pouring Resin

The foundation for flawless results is to pour your resin in thin, controlled layers—typically no more than 3mm at a time. This helps trapped air rise to the surface and escape before the resin sets. Thicker pours are more susceptible to bubble formation and may increase the chance of warping as the resin heats and cures unevenly.

Allow each layer to cure before adding the next for improved stability and visual clarity. Products such as Art Pro Deluxe Ultra-High Viscosity Epoxy Resin are formulated to offer enhanced control for artists, making them ideal for detailed pours with minimal bubbles.

Removing Bubbles: Heat and Tools

After pouring, bubbles may appear within the resin or rise to the surface. Gently passing a heat gun or torch over the surface—holding it several centimetres away—encourages bubbles to burst and escape without overheating or scorching the resin. Move the heat source slowly and avoid lingering in one spot. Avoid using an open flame around flammable surfaces, and always work in a well-ventilated, dust-free area to keep your piece pristine.

Environmental Factors and Workspace Setup

Temperature and humidity play a crucial role in resin art. A stable, dust-free environment helps prevent imperfections during curing. If your workspace is too cold, resin may become too thick to self-level, trapping bubbles. Conversely, high heat can cause the piece to warp or cure unevenly. Consider using covers to shield curing pieces from dust and allow for gradual, even cooling and settling.