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