More of the "Unity" story
"Unity", celebrates the number five. A crosscut of the torus reveals a pentagram (5-pointed star). If you were to trace any valley between any two ridges (or trace a ridge), you would make five revolutions before returning to your starting point. Does this make it a mobius (one edge and one side)? The overall diameter is close to five squared (25"). In ancient times, the pentagram (derived from the pentagon) was a symbol for health and salvation, and in the Middle Ages, it was used as a symbol to repulse evil spirits.
As a geometric form, the pentagram is quite significant; the bisected line lengths contain the "Golden Ratio", the number known as Phi, approximately 1.618. The number 5 has always been regarded as mystical and magical, and it relates to the human form. We have five fingers/toes on each limb. We commonly possess five senses - sight, hearing, smell, touch and taste - the list goes on and on.
It has been said that, "All things happen in fives or are divisible by or are multiples of fives." If anyone wants more, here is a link to a great compilation of "five" info: http://www.sulis.net/five.htm.
This was a complex and challenging project, but there was relatively very little "turning"; however, every one of the 100 individual pentagram-shaped rings spent time on the lathe in order to create the matching concave curves. After assembly, the surface contained ridges between every small ring, which required extensive abrasive smoothing, but the final shape depended upon the pre-turning of the components.