| Ring of Tetrahedrons | |
Home > Geometric toy > Ring of Tetrahedrons | |
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Let the vertices of a cube be A,B and two points on edges be C,D.Where triangle ABC,ABD are halves of equilateral triangle. Make a tetrahedron ABCD. As in the same way let make 6 tetrahedrons. |
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Next,let hinge six tetrahedrons as a ring. This ring can transfrom in freedom of movement 1. (Paul Schatz 1928) |
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Make one tetrahedron with 4 above-mentioned tetrahedrons.You can make another "ring of tetrahedron" with them. Photo is a "Kaleido Cycle",construceted by the book"M.C.ESCHER KALEIDOCYCLES"by Doris Schattschneider and Wallace Walker. Real animation of Kaleido Cycle(178KB) |
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| This is same mechanism as stated above but made of metal pipes and wires. | ||||
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Sold as "Geometry", "Hexyflex", "FlexiStar3" etc. |
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| simple closed loop | ||||
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Made of long nats and long balts. It turns smoothly and windingly. made by Akira Nishihara |
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| serrureries-1 | ||||
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made of 6 L-shaped serrureries made by Akira Nishihara |
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| serrureries-2 | ||||
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made of 6 twisted metal rectangles made by Akira Nishihara |
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