How to Prevent Bubbles in Resin Ashtrays

How Can I Prevent Bubbles in Resin Ashtrays?

Achieving a glassy, bubble-free finish in resin ashtrays is a common goal for craft enthusiasts and artists. Small air pockets can interrupt an otherwise flawless design, but a few practical steps can significantly reduce unwanted bubbles.

Best Practices for Mixing and Pouring Resin

Mixing technique plays a major role in reducing bubbles at the start. Stir your chosen resin—such as Art Pro Clear Epoxy Resin—slowly and steadily, rather than whipping or shaking, to avoid trapping air. When it comes time to pour, gently stream the resin into your mould in one spot and allow it to spread. This approach lets air naturally escape rather than getting trapped in folds or corners.

Releasing Bubbles After Pouring

Once poured, a few simple techniques help remove surface bubbles before the resin begins to cure. Lightly tapping your mould on a flat surface encourages hidden bubbles to rise and burst. For remaining bubbles, you can carefully use a toothpick to pop them. Alternatively, pass a heat gun on its lowest setting or a small torch briefly over the surface—just enough to help break up surface bubbles without overheating the resin. Always follow the safety recommendations in your resin’s instructions to avoid mishaps.

When This Matters Most

Crystal-clear designs (e.g., including decorative objects or ashtrays featuring embedded items)
Achieving a professional finish for gifts or sale

Bubbles can distract from the clarity and details of your resin work, especially in projects designed to highlight embedded elements or vibrant pigments.

Related guides

How To Make A Resin Ashtray

Mastering bubble prevention enhances the beauty and durability of your resin ashtrays. For more guidance on achieving professional results from start to finish, see our full guide on how to make a resin ashtray.