Sand Resin Dice: Remove Micro-Scratches, Restore Clarity

To remove micro-scratches and restore clarity on resin dice, you need a clean, consistent sanding progression—especially if you want clarity or paint-ready results. These silicon carbide sheets support wet or dry use, which helps reduce loading and keeps scratch refinement easier to control.

Only move up a grit when the previous grit’s scratches are fully gone under raking light.

Why Sanding Matters

Plastic clarity and glossy finishes are extremely sensitive to scratch depth. If you jump grits too fast, you trap deeper scratches that show up later as haze or dull streaks. A steady grit sequence levels defects and refines scratches so polishing or paint goes smoothly.

Recommended Tools

• Sanding block + soft interface pad (for edges and curves)
• Spray bottle (water + a drop of dish soap) for wet sanding
• Microfiber towels and lint-free wipes
• Bright flashlight for raking-light inspection
• Masking tape to protect edges/corners
• Clean rinse bottle to keep slurry free of debris

Recommended Grit Sequence

• 100 grit
• 400 grit
• 600 grit
• 800 grit
• 1000 grit
• 1200 grit
• 1500 grit
• 2000 grit

For resin/acrylic/polycarbonate, wet sanding and light pressure usually produces the most consistent clarity.

Step-by-Step

1. Wash and dry the resin dice. Any grit left on the surface can create deep random scratches.
2. Pick a starting grit based on defect depth. Start as fine as possible while still removing the problem efficiently.
3. Sand evenly with a consistent backing. Wipe clean and inspect under raking light until the scratch pattern is uniform. For a controlled working step, use 1500 Grit (50 Pack).
4. Move up one grit and repeat. Don’t advance until the previous grit’s scratches are fully removed.
5. For fine refinement, wet sand and rinse often to prevent contamination scratches. Keep pressure light. For refinement, step up to 100 Grit (25 Pack) with wet sanding.
6. Finish at your final grit, then clean and dry thoroughly before paint, polish, or buffing. For final cleanup passes (or an alternate pack), keep 2000 Grit (25 Pack) ready.

Special Cases

Haze that won’t clear: Usually leftover scratches from an earlier grit. Step back one grit and re-sand until uniform.

Edges and corners: Use lighter pressure or a softer pad to avoid rounding and creating uneven clarity.

Loading: Wet sand, rinse frequently, and replace sheets early when they stop cutting cleanly.

Pro Tips

• Use raking light every grit—overhead light hides scratches.
• Change direction slightly between grits so you can confirm scratch removal.
• Keep slurry clean; contamination is the #1 cause of random deep scratches.
• Go lighter as you go finer—pressure increases scratch depth.

Aftercare

• Rinse/wipe residue and dry completely before finishing.
• Remove masking tape slowly to avoid adhesive residue.
• Store leftover sheets flat and dry.

FAQs

• Wet or dry use? Both. Wet sanding often gives better clarity results on plastics and resins.
• When do I move up a grit? When you can’t find any scratches from the previous grit under raking light.
• Do I need to go above 1200? For clarity/polish work, yes—finer grits make polishing easier and faster.

Watch & Learn

Use the video as a scratch-pattern reference: wipe clean, check under raking light, and don’t move up until the entire surface looks uniformly refined.

For more wet/dry silicon carbide sanding sheets and grit options, visit eQualle on Amazon.