Among the most effective ways to shorten machining time-and thereby reduce costs and manufacturing time-is to remove material from a workpiece faster. High-speed spindles that rotate faster than 100,000 rpm, for example, remove material five times more quickly than conventional machines, which generally operate at speeds less than 10,000 rpm. The aerospace industry was once the primary domain of high-speed spindles, which were typically used to cut aluminum parts, such as wing and fuselage spars. High-speed technology, however, is now being used increasingly in a broad range of applications to machine ferrous metals and nonmetallic materials.
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