Abstract: A workpiece positioner includes a workpiece holder that is mounted to a chassis for rotation about a central axis, and further includes a first set of workpiece supports for retaining and supporting a first workpiece between a drive end and an idler end, and a second set of workpiece supports for retaining and supporting a second workpiece between the drive end and the idler end. The workpiece positioner also includes a support member that links the drive end to the idler end. This support member has a cross-sectional shape that is best characterized as an I-beam, and as such, the work envelopes for the first and second working pieces are very close together, but at the same time, still separated such that welding or other similar manufacturing and/or processing operations can be performed on each workpiece without any interference or effect on the other workpiece.