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mandrel
Another type of mandrel is the clamp that a lathe uses to hold the piece of wood, metal or plastic to be machined as it is turned.

Mandrels are also used to hold circular saw blades, buffing wheels, and sanding discs onto drills, circular saws, and similar power tools.

While most mandrels are driven by direct connection to a motor, other mandrels are driven by attachment to a pulley driven shaft.

Mandrels are not recent inventions. Metal machining utilizing the spinning process has been recorded as far back as Egyptian hieroglyphic times. In metal spinning, a wood or metal spinning mandrel is used, the form of which corresponds with the internal contour of the part to be produced. Also, the traversing mandrel was introduced around the year 1700 CE, and consisted of designing a lathe mandrel that would be able to slide axially in its bearings under the control of the operator so that components having short lengths of thread could be produced.
http://www.answers.com/topic/mandrel?hl=clamp&hl=lathe

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Note added at 2 hrs 2 mins (2005-08-28 19:36:13 GMT)
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