Sanding Hacks

Learn why deep scratches remain after sanding, how to find the right step-back grit, and how to rebuild the sequence without making the surface worse.

Polycarbonate visors, helmet shields, and machine guards often collect scratches that scatter light and obscure vision. Before sanding, it’s crucial to assess scratch depth—removing too much material can distort optics. This guide shows how to evaluate, sand, and polish polycarbonate...