Using a random-orbit sander is a tedious job, but essential to many woodworking jobs. A rushed job or an inferior product can ruin hours of careful woodworking, so it makes sense to ask some critical questions: Which sanding disk works the fastest? Which offers the most bang for the buck? And which yields the most finish-ready surface? Andy Beasley tested eight product lines of 5-in.-dia. hook-and-loop sanding disks: one each from Gator, Grizzly, Norton, 3M, and Shopsmith and two each from Klingspor and Mirka. He tested for stock removal and surface quality, and weighed price, endurance during testing, and total amount of material removed when calculating the result. From Fine Woodworking #222
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