We evaluated both battery-powered sanders (called cordless) and corded models. For more thorough dust control, use a sander that has a round exhaust port to facilitate hooking up to a hose on a shop vacuum. Both types of sanders have a bag that will capture most of the dust the tool produces. Orbital sanders use peel-and-stick sandpaper that comes precut or that you cut to fit, or you attach an abrasive sheet to the tool with the clamps on the sander’s sides. But the square pad allows them to sand into corners.Īnother difference between these is that the random-orbit variety take sandpaper discs that attach to their bases with hooks and loops. These tools sand with a consistent orbital motion and work more slowly than random-orbit types. We also tested an orbital sander with a square pad (also called a quarter-sheet sander). This reduces the chances of leaving swirl marks on the surface and allows you to move the sander both with and across the grain. Random orbit means the pad spins and oscillates in, just that, a random orbital motion. Most of our test sanders are random-orbit types with a round pad measuring 5 or 6 inches across.
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