Spherical rhombic triacontahedron

The diameter of the sphere is 135 mm and it consists of 30 ‘golden’ rhombi. Each rhombus was edged on two opposite side with 2.5 mm thick Imbuia. Three jigs were used in the process of cutting the rhombi exactly, trigonometrically correct. This is essential for the construction of the triacontahedron. A forth jig was used in the first gluing process which was to join two rhombi together. Five such ‘double’ rhombi were then joined to form a circular backbone after which individual rhombi were added and glued on by hand. This is a very tedious process requiring absolute accuracy and no sanding of rhombi was required in the end. Quick setting superglue was used for all joints. The input of Dereck Nicolson is gratefully acknowledged.