When to Replace Sandpaper: Visual and Tactile Signs of Dull Grit (80–3000 Grit Efficiency Guide)
Fresh sandpaper cuts cleanly and evenly; worn sheets drag, glaze, and overheat your workpiece. Learning to spot the visual and tactile signs of dull grit saves time, preserves surface quality, and prevents burn-through or clogging—no matter whether you’re working with...