How Do I Fix Imperfections in Finished Resin Balls?

← Back to How to make balls with synthetic resin

Even with the most care, small surface issues can appear in your finished synthetic resin balls. Fortunately, there are simple steps to correct imperfections and restore a smooth, glossy finish.

Identifying Common Resin Ball Imperfections

Blemishes in resin balls commonly include light scratches, surface haze, or tiny air bubbles. The causes can range from unmixed resin, trapped dust, or removing the piece from the mould a little early. Evaluating these flaws will guide your repair method.

• Surface scratches: Usually visible under bright light.
• Cloudiness or dull spots: Sometimes left by sanding or mould residue.
• Tiny pits or bubbles: Often found near the surface.

Step-by-Step: Sanding and Polishing for a Crystal Clear Finish

Start by using a fine grit sandpaper (such as 1000–2000 grit), keeping the surface slightly wet to reduce scratches. Gradually work through finer grades until the surface feels consistently smooth. For deep-set flaws, coarser paper can be used initially, but always finish with a very fine grade.

Once sanding is complete, polish the resin ball with a microfibre cloth and a gentle plastic polish or resin-friendly compound. This lifts out any residual haze and brings back the clarity and shine. Remember to clean the sphere thoroughly between sanding stages to avoid introducing new scratches.

When Attention to Finishing Matters Most

Achieving a flawless finish is particularly important if the resin ball will be on display, used in jewellery, or included in a larger artistic piece. Well-polished resin not only looks more professional but is also more durable in the long term.

Related products

• "Epoxytable 10-Ten" – Deep Pour Epoxy Resin for Tables, Up to 10cm Casting
• "EpoxyTable 5-Five" – Deep Pour Epoxy Resin for Tables and Large Projects – Up to 5cm
• "Pure Mould" – Translucent Liquid Silicone Rubber for Mould Making

Related guides

• How To Make Balls With Synthetic Resin

Perfecting the surface of resin balls is a key step in crafting with synthetic resin. With the right tools and a careful approach, your finished spheres can be beautifully clear and ready for any creative project. For more advanced techniques on creating resin shapes, return to our main guide on how to make balls with synthetic resin.