Tubular Rhombic Triacontahedron | 7232 Neodymium Magnetic Balls @ledwatchman

Uploaded May 2012 | Updated September 2026, 3 hours ago

The rhombic triacontahedron is a polyhedron (a 3D geometric form) composed of 30 identical diamond shaped faces all around it. This hollow tubular version has outer edges made from pentagonal tubes, plus every vertex of the triacontahedron has been connected to a central core, 12 pentagonal tubes and 20 hexagonal tubes for a total of 32 spokes. I used Magnenaut's design for the central core all the spokes connect to.
This shape uses a mixture of gold and nickel neodymium magnets for a total of 7,232 balls.
Music track is Gymnopedie No.1 by Erik Satie.

#ledwatchman #Neocube #Neoballs #Nanodots #ZenMagnets #Speks #Buckyballs #NingoBalls #CyberCube #KlikyBalls #NeoQube

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$Rhombic Fractal Hemisphere Mega Cluster | Part Tutorial | 7632 Neodymium Magnetic Balls This large hollow cluster shape is built from 5mm neodymium ball magnets and uses 2 fundamental units: a solid interlocked pentagonal one of 21 balls (in gold) and a solid interlocked square one of 17 balls. 5 of the square units fit around the pentagonal unit to make each mini hemisphere subunit of 106 balls, 6 of which interconnected form each of 12 larger hemispheres. These 12 hemispheres interconnected in turn form a mega cluster sphere. A total of 6 × 12 = 72 pentagonal units, and 5 × 6 × 12 = 360 square units. A total magnet count of the 72 mini hemisphere mega cluster of: 17 × 5 + 21 = 106, 106 × 6 × 12 = 7632 magnetic balls. 2 large hemispheres of 6 subunits each can be easily connected as shown to make a smaller sphere of 12 × 106 = 1272 balls. The full 72 mini hemisphere cluster is a lot trickier to build but once completed it is very strong, because the units used to make it are solid (in compact form). If you look closely at this structure you can find fractal quasi self-similarity (partial but not exactly identical) among 3 levels of scale that resemble the geometry of a rhombic triacontahedron (a 30 diamond sided polyhedron). There are also symmetrical gaps formed among the units that make the whole structure look weirder. Music track is Heliograph by Chris Zabriskie, from the YouTube free music library. #ledwatchman #Neocube #Neoballs #Nanodots #ZenMagnets #Speks #Buckyballs #NingoBalls #CyberCube #KlikyBalls #howto Heliograph by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://chriszabriskie.com/divider/ Artist: http://chriszabriskie.com/$

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