Do I Need to Sand Before Polishing UV Resin?

Wondering if you need to sand UV resin before polishing? Proper sanding is essential for a flawless, high-gloss finish on any resin project. Skipping this step can lead to disappointments even with the best polishing products.

Why Sanding Matters

Sanding serves several important functions: it evens out imperfections, removes surface scratches and provides a smooth base for polishing. Even the clearest UV resin may develop tiny bubbles or uneven spots during curing. Sanding prepares the surface so that polishing does not merely highlight flaws but enhances the overall appearance.

Best Practices for Sanding UV Resin

For best results, begin sanding with a coarse grit and work gradually towards a finer grit, such as with Ebonite Abralon Sanding Pads (available from 360 to 4000 grit). Always ensure each previous scratch is fully removed before moving to the next, finer grit. Wet sanding is recommended to reduce dust and achieve a smoother finish. Circular motions with consistent, gentle pressure help maintain an even surface.

Polishing After Sanding

Once sanded through to a fine grit, the UV resin is ready for polishing. Choose a suitable product like the Epoxy Polish system. For deeper gloss, use a polishing pad or rotary polisher, but you can also achieve results by hand with patience. Use a microfibre cloth or sponge for the final buff. Ensure any sanding residue is fully rinsed away before applying your polish.

When This Matters Most

Restoring clarity to jewellery, coasters, or small crafted pieces
Correcting accidental marks or rough edges on cured UV resin
Preparing resin art for a truly professional finish

Related guides

How To Polish Uv Resin

Sanding before polishing is a crucial step for achieving that perfect finish on UV resin projects. For more in-depth advice and the next steps, visit our main guide on how to polish UV resin.