By definition Random orbital sanders are hand-held power tools for sanding in which the sanding blade delivers a random-orbit action. That is, the angle of rotation of the head and disk is variable. Perhaps the first introduced in 1976 by Festool but in 1982,[circular reporting?] random orbit sanders combine the speed and aggressiveness (again by Festool, Festo in 1982) of a belt sander with the ability to produce a finer finish than that available from a standard, slow speed orbital finishing sander. Random orbital sanders generally come in three different types: electric powered, air powered, and orbital floor sanders. The electric and air powered orbital sanders are handheld, while the floor orbital sanders are large machines that roll.
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