How to Seal Objects to Prevent Bubbles in Clear Resin

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Achieving a crystal-clear result when embedding objects in resin starts with preventing bubbles. Properly sealing your items is the foundation for flawless resin art and casting.

Why Do Objects Cause Bubbles?

When placing porous or organic items—like dried flowers, wood, or paper—directly into clear resin, air from tiny gaps or uneven surfaces gets trapped. As the resin cures, these air pockets rise as bubbles, clouding your project. Sealing objects creates a barrier that keeps air contained and helps the resin set smooth.

Practical Steps to Seal Your Objects

Choose a sealant compatible with resin, such as a thin layer of clear-drying glue, specialist medium, or even a pre-coat of your chosen resin.
Apply the sealant gently with a brush, covering all surfaces and crevices of your object.
Let your sealed item dry thoroughly—rushed steps can trap more moisture, leading to further bubbles or haziness.

Once dry, embed your objects in resin like the “Trasparente” Epoxy Resin, which provides clarity ideal for displaying detail.

When Sealing Matters Most

Sealing is especially important for porous and delicate items, such as dried botanicals, paper cut-outs, fabrics, or soft woods. Dense, non-porous objects like glass, metal, or polished stones can generally be placed directly in resin without sealing.

Related guides

How To Embed Objects In Clear Resin

Preparing and sealing your objects before embedding is a key step in producing professional results with clear resin. Explore more embedding tips and techniques on our main guide, How to Embed Objects in Clear Resin.