The Thoringian Sphere, part of the Apsis Sculpture series, was a self-imposed exercise in precision woodworking, with the added complexity of a multitude of machined brass parts: this sculpture has 160 handmade elements.

The wooden elements are all turned upon a wood lathe, while the brass lens mounting hardware was entirely custom machined upon a metal lathe and a milling machine. The twelve mahogany medallions were fabricated using several clever machining operations and inserted into bored holes located on the twelve equa-distant nodal points upon the surface of the six inch diameter maple burl sphere. The pedestal base and riser were turned out of figured black walnut. The glass cloche jar and the lenses were purchased new.

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