In segmented woodturning, the object is first constructed in rough form by gluing together many segments of wood, then turned to its final shape on the lathe. This allows the use of different species, control of grain orientation, and the addition of geometric figure to the piece.  I often use veneer of contrasting color between segments or between rings.

The segments are cut out on the bandsaw and sanded to fit.  My sanding table was made by machinist extraordinaire Norm Vordahl, of Las Vegas.  Then they’re glued into rings

Then the rings are glued together into a stack.  The ring press was also made by Norm Vordahl.

The final “rough” form of the piece is mounted on the lathe for final turning.

I learned this technique from Paul Weinberger, of Weston, WV. Paul is a patternmaker, retired from the glass industry that once flourished in this part of the country, and this process is essentially the same as the one by which glass moulds and mould patterns were made in the old days.  This method of preparing the segmented form is different from the more common use of a table saw or miter saw.