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If your epoxy resin still looks scratched even after careful polishing, the problem is usually hidden in the sanding process. Understanding why marks remain helps you achieve that flawless, high-gloss finish.
Common Causes of Visible Scratches in Polished Resin
The most frequent culprit is skipping grit levels during sanding, or not thoroughly removing deeper marks from earlier stages. Every sanding stage leaves microscopic lines; jumping ahead without eliminating these can leave scratches that even the best polish can’t disguise. Always move through each grit size in order—such as starting from coarse and gradually working towards finer grits—so all roughness is refined step by step.
Essential Sanding and Polishing Sequence
To avoid unwanted marks, begin with a sanding disc or pad that matches your project’s needs—products like the Ebonite Abralon Sanding Pads offer a full range of grits suitable for resin work. Systematically move from lower to higher numbers (for example: p80, p120, p320, p600, and up). At each stage, make sure all traces from the previous grit are gone before switching up.
After sanding, use a dedicated resin polishing solution and the appropriate tool—such as a rotary polisher or pad holder—for even surface contact. The Epoxy Polish system is particularly effective for restoring shine and removing minor swirling that may appear after fine sanding.
When This Matters Most
- For glossy resin art, tabletops, or jewellery where imperfections show easily
- If you plan to photograph or sell your finished pieces
- Whenever clarity and shine are essential to your project’s overall appearance
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By taking the time to follow each sanding and polishing step, you can avoid visible scratches and enjoy a perfectly smooth resin surface. For more in-depth finishing advice, see our full guide on how to sand and polish coloured epoxy resin.