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Embedding real animals in resin is a delicate process, and one of the most common issues is air bubbles appearing around the animal during casting. Preparing and sealing the animal before pouring is crucial to achieve a clear, professional result.
Why Sealing Prevents Bubbles
Natural objects such as insects, fish, or frogs contain tiny pores or air pockets that can trap or release air during resin casting. Sealing creates a barrier, helping prevent trapped air from escaping as unsightly bubbles into the resin, which is particularly important for achieving a smooth, transparent finish.
How to Seal the Animal Before Embedding
- Ensure the animal is completely dry; any moisture can cause bubbles or cloudiness.
- Apply a thin coat of clear-drying sealer such as PVA glue, decoupage medium, or an artist’s spray fixative. Allow each layer to dry thoroughly.
- For delicate specimens, use a soft brush and a gentle touch to avoid damage.
- Check for missed spots and reapply as needed, especially in crevices where air might be trapped.
Once fully sealed, your animal is ready for casting. Choosing a low-viscosity epoxy, such as EpoxyTable 5-Five, can further help reduce bubbles during the pour.
When This Matters Most
Bubbles are most likely when working with textured or porous specimens, or with larger animals. Careful sealing is especially critical when clarity is essential for decorative or memorial pieces.
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Taking the time to properly seal your animal specimens will make all the difference in projects where crystal clarity in resin embedding is key. For more step-by-step support, visit our full guide on how to embed animals in resin.