Should You Sand Resin Before Adding a New Layer?

Q: How to Sand Resin Between Layers

Allow your current layer to fully cure as recommended by your specific product’s instructions. Using a fine-grit sandpaper, gently sand the surface in small, circular motions. Avoid deep scratches—just a subtle scuff is enough. Thoroughly remove sanding dust with a clean, microfibre cloth or damp wipe before pouring the next layer. This helps prevent cloudiness or debris in your final finish. If you’re using a quality casting resin like Epoxytable 10-Ten , always refer to the manufacturer’s guidelines for best bonding practices.

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Should You Sand Resin Before Adding a New Layer?

Layering resin allows you to achieve striking depth and clarity in your creative and functional projects. Getting a smooth, durable bond between layers is essential—here’s why sanding plays a key role before you pour again.

Why Sanding is Essential for Layering Resin

When working with resin—be it for deep pours on tables or clear artwork—each layer needs to securely bond with the next. A cured resin surface is often glossy and non-porous, which can prevent new resin from adhering properly. Lightly sanding with a fine grit (such as 320–600) creates tiny abrasions, enabling the fresh resin to grip onto the surface and cure seamlessly. Skipping this step can lead to layer separation or visible imperfections.

How to Sand Resin Between Layers

Allow your current layer to fully cure as recommended by your specific product’s instructions.
Using a fine-grit sandpaper, gently sand the surface in small, circular motions. Avoid deep scratches—just a subtle scuff is enough.
Thoroughly remove sanding dust with a clean, microfibre cloth or damp wipe before pouring the next layer. This helps prevent cloudiness or debris in your final finish.
If you’re using a quality casting resin like Epoxytable 10-Ten, always refer to the manufacturer’s guidelines for best bonding practices.

When This Matters Most

Sanding between layers is especially crucial for deep pour projects like resin river tables, thick jewellery, or when your design relies on clear, perfectly fused layers. It’s also recommended when waiting more than 24 hours between pours, as the resin’s surface will have fully hardened by then.

Related guides

How Do You Bleach Resin

By taking a few extra minutes to sand before adding new resin layers, you’ll achieve greater strength and beauty in your finished pieces. This simple step is key to long-lasting results—explore further techniques and advice in our complete guide to resin layering and maintenance.