Pro Techniques

Scratched glass—tables, windows, or automotive glass—can often be restored without replacement. The proven method is progressive wet sanding: 600 ? 1200 ? 3000 grit, followed by polishing compound. Each step reduces scratches until the surface is smooth, then polishing restores...

Scratches on polycarbonate—like headlight lenses, motorcycle windshields, or safety visors—can make them look old, cloudy, and unsafe. This guide shows you how to restore clarity using only wet/dry sandpaper in 600, 1500, and 3000 grit, without relying on polishing compounds...