Uwe Meffert is one of the leading Rotating Puzzle Inventors / makers in the world, and now has a very attractive web-site which sponsored the Mind Sport Olympiad 2002, Puzzler Championship. I have not seen the web site due to not having a computer, but I have had the pleasure to meet Uwe Meffert in person as he visited me one weekend several years ago.

Our interest in puzzles started in two extremely opposite directions; I became interested in puzzles through researching some of the great puzzle writers and inventors such as Sam Lloyd and Henry E. Dudeney. Uwe's introduction to puzzles was more by accident. He was doing some research in early 1970 into the energy flows inside the human body and what effect if any resulted by playing with different shapes. (The mystical powers of the Pyramids was an in thing during that period) He made all of the 5 basic Polygons out of balsa wood. However, doodling with the solids for hours soon became boring to him, so Uwe cut them into symmetric slices and attached them with rubber bands to a center ball.   More detail...