First Tetrahedron

 

A tetrahedron consists of four triangles, like a pyramid with a triangular base. It is the simplest stable solid shape. This piece is a basic tetrahedron, decomposed at the tips. The compression struts are Rock Maple, with turned Rosewood tips capturing cast Pewter anchor pieces. The tension members are four Cotton cord loops holding the tips together, and six pairs of Brass rods, threaded for 0-80 nuts.

Here are a couple shots of the overall piece, sitting on a base, and sitting on a tip. The piece is 15" in diameter.

Here are some closup shots.

These show details of the strut ends.