Dry Sanding during Restoration:
You dry sand a headlight for restoration primarily to aggressively remove the damaged, yellowed clear coat and oxidation, especially the tough, built-up layers, using coarse grits (like 300-600) to get down to bare, clear plastic quickly, which is hard to do with wet sanding alone, before progressing to finer grits (damp sanding) for a smooth finish. Dry sanding lets you feel the sandpaper's grip, indicating material removal, and it's a fast way to strip tough OEM coatings that buffing won't remove.
Key Reasons for Dry Sanding (Initial Stage)
Aggressive Material Removal: Harsh, yellowed, or peeling OEM clear coats are tough and require aggressive sanding to strip off completely, which coarse dry sandpaper does faster.
Feel & Control: Without water, you can feel the sandpaper bite and resistance, telling you when you've gone deep enough to remove the damaged layer and reach the plastic.
Stripping Coatings: It's often the only effective way to remove the hard, bonded factory UV-protective layer that causes severe hazing.
