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Rhombic Dodecahedron Box Puzzle ?
Years ago in the early '80's FW had an article about making a "Rhombic Dodecahedron" box (12 sided, made up of diamond shaped pieces) that would pull apart by using an unnatural grip. I made a few of these at the time, but have since lost my notes and was wondering if anyone had a fixture or jig, that would hold the small(~2" x 2 7/8" diamond shaped pieces while safely cutting/machining a 30 degree chamfer on all four sides. Heres a link to the the geometric shape that may jog your memory. http://mathworld.wolfram.com/RhombicDodecahedron.html