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For a truly glass-like shine on two-component resin, your polishing success depends on the care taken during sanding. Using a progressive sequence of sanding steps prepares the surface before any polish or buffing compound is even opened.
Why Progressive Sanding Matters
Progressive sanding involves working through increasingly fine grits, starting from a coarser abrasive (such as 360 or 600 grit) and moving up to a very fine grit (often 2000–4000). This gradual process removes scratches from previous steps and prevents blemishes from becoming locked beneath the final finish. Skipping grits or rushing will likely leave swirl marks or a cloudy appearance after polishing.
How to Sand Resin Effectively
The best results come from sanding evenly across the surface, either wet or dry depending on the pads used. Wet sanding helps manage dust and reduces the chance of clogging. Consider Ebonite Abralon Sanding Pads, which are suitable from 360 to 4000 grit and maintain good surface pressure thanks to their foam backing. Always change water between stages if wet sanding, and ensure each grit removes the marks of the last before progressing.
From Sanded to Polished: The Final Step
Once the surface feels uniformly smooth and free of visible scratches, move on to polishing. Use a quality resin polishing system like the Epoxy Polish with a rotary polisher or hand pad holder for best gloss results. Always follow the manufacturer’s instructions for both the pad and polish used.
When This Matters Most
Progressive sanding is essential if you want a crystal-clear, mirror-like finish or are working on table tops, artwork, or resin jewellery where clarity and gloss are on show.
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Mastering progressive sanding will elevate your resin work, creating the ideal foundation for high-gloss polishing. For a complete overview of resin finishing, explore our main guide on polishing two-component resin.