How do I avoid bubbles in my resin hobby projects?

Practical Preparation to Prevent Bubbles

Bubbles often form during mixing or pouring, but you can minimise them by mixing your resin and hardener slowly and steadily. Avoid whipping air into the mix by gently folding the components together, rather than stirring vigorously. Once mixed, let the resin sit for a minute or two to allow trapped air to rise to the surface.

• Mix resin and hardener slowly for a few minutes.
• Let the mixture rest briefly before pouring.
• If possible, work in a warm (but not hot) environment to encourage bubbles to escape.

Pouring Techniques for Clear Casts

Pouring resin in thin layers is key to reducing trapped air. Thick pours can trap larger bubbles that are harder to remove. For flat surfaces and deep moulds, layer your pours and allow each layer to settle before adding the next. To help any surface bubbles escape, lightly pass a heat source—such as a heat gun or torch—over the surface, taking care to keep it moving and not overheat one spot.

Selecting Bubble-Reducing Resins

Certain resins are formulated to enhance degassing, making it easier for bubbles to dissipate. Products like the Evershine Collection kit or Liquidissima epoxy resin are ideal choices for hobbyists focused on crystal-clear results. Their improved flow helps bubbles rise and burst naturally during curing, making them especially suitable for detailed jewellery and intricate crafts.