Abstract: A workpiece supporting assembly, having a body member with an internal workpiece channel and a plurality of body openings communicating with the internal workpiece channel, supports a workpiece within the workpiece channel so that end portions of the workpiece extend from the body openings. The body member has a plurality of arbors, each arbor having a longitudinal axis that is coincident with a datum axis of one of the extending workpiece portions. A turning machine grips one arbor at a time and rotates the body member about the selected longitudinal axis for machining the extended workpiece portion.

Abstract: A workpiece supporting assembly, having a body member with an internal workpiece channel and a plurality of body openings communicating with the internal workpiece channel, supports a workpiece within the workpiece channel so that end portions of the workpiece extend from the body openings. The body member has a plurality of arbors, each arbor having a longitudinal axis that is coincident with a datum axis of one of the extending workpiece portions. A turning machine grips one arbor at a time and rotates the body member about the selected longitudinal axis for machining the extended workpiece portion.