News Sanding Disc & Belt Buying Guide: Coated Abrasive Basics for Metal & Wood application guideWhitby AbrasivesJun 30, 2026 Grit Progression & Sequencing: Never Skip More Than One Step application guideWhitby AbrasivesJun 30, 2026 Grit-to-Surface-Finish (Ra) Chart: Which Grit Gives Which Finish grit selectionWhitby AbrasivesJun 30, 2026 Abrasive Grain Selection by Material: Which Grain for Which Metal application guideWhitby AbrasivesJun 30, 2026 How to Choose a Flap Disc: Grain, Grit, Type 27 vs 29, Backing & Density application guideWhitby AbrasivesJun 30, 2026 Get Updates Get expert tips on abrasives, exclusive offers, and the latest product updates from Whitby Abrasives delivered straight to your inbox. Your email Subscribe100% free, Unsubscribe any time! Follow us