Why Resin Looks Cloudy After Polishing

It’s frustrating to spend time finishing your resin project only to find it looks dull or milky after polishing. This guide explains the common reasons why resin remains cloudy and how to restore its brilliance.

Understanding Common Causes of Cloudiness

A cloudy appearance after polishing often means the sanding stage wasn’t completed thoroughly, or that fine sanding marks have not been removed. Residue left on the surface can also contribute to a hazy look. Using insufficiently fine grits or skipping grits as you work through the sanding stages can leave microscopic scratches that trap light and reduce shine.

Effective Steps to Achieve Clarity

Start with an appropriate sanding pad, such as the Ebonite Abralon Sanding Pads, moving from coarser to finer grits up to at least 3000 or 4000 grit.
After sanding, thoroughly clean the surface to remove all dust and particles. Any residue left behind may prevent the polish from working effectively.
Use a specialised resin polishing system like Epoxy Polish. For best results, apply with a hand pad holder or a polishing sponge, such as the Polishing Sponge Discs, to ensure even pressure and complete polishing.
Buff thoroughly until the resin surface becomes clear and glossy.

When This Matters Most

Clarity is essential for resin jewellery, art pieces, and table tops where optical quality and a mirror-like finish are desired. Paying close attention to sanding technique and using the correct polishing tools will make all the difference to your final result.

Related guides

If you’re still seeing a cloudy finish, it may be worth revisiting your sanding and polishing routine. For more detailed advice and additional polishing tips, see our main how to polish resin guide.