How to Avoid Bubbles in Resin Projects

Why Do Bubbles Form in Resin?

Bubbles are often caused by vigorous mixing, rapid pouring, or trapped air in complex moulds. Temperature shifts in the workspace can also make bubbles harder to remove, especially with thicker or high-viscosity resins.

Techniques for Bubble-Free Results

• Pour Slowly: Steady, controlled pouring helps minimise air entrapment.
• Choose Low-Viscosity Resin: Products such as “Liquidissima” epoxy resin are well-suited for intricate jewellery and detailed moulds thanks to their excellent flow and self-levelling properties.
• Monitor Workspace Temperature: Working at a stable, moderate temperature improves resin behaviour and helps bubbles rise and escape before curing.
• Gently Warm the Resin or Mould: Briefly warming the resin or mould can encourage bubbles to move to the surface, where they can be popped or dissipate naturally.

Practical Advice and Product Selection

When selecting a resin, consider your project’s level of detail and required thickness. For thin, clear layers—like jewellery or small castings—low-viscosity resins offer more forgiving application. For bigger pours, such as tabletops, products like “Epoxytable 10-Ten” ensure a bubble-free finish by combining low viscosity with a slow cure. Prep your workspace with all needed supplies beforehand so you can focus on mixing and pouring without distractions.