8 Large Polyhedrons From A Quasi Rhombic Dodecahedron Subunit | Tutorial | Neodymium Magnetic Balls @ledwatchman
8 Large Polyhedrons From A Quasi Rhombic Dodecahedron Subunit | Tutorial | Neodymium Magnetic Balls  @ledwatchman
Uploaded July 2021 | Updated September 2026, 4 hours ago
A variety of 8 large polyhedrons that are all made from interconnected quasi rhombic dodecahedron subunits. I call them 'quasi' because a true rhombic dodecahedron has 12 completely flat diamond faces, but these ones have slightly concave ones, actually composed of 24 trapezoidal faces, but they still illustrate the way the rhombic dodecahedron fills 3D space and can form many different geometric shapes.
I built 51 inner edge 4 quasi rhombic dodecahedron subunits using almost my entire magnet collection, 12 fully reinforced using 480 balls each, with a 3rd internal layer of 12 × 3 × 2 = 72 balls, the other 39 used 432 balls each, only reinforced top and bottom during construction, with just 3 × 4 × 2 = 24 balls used in the innermost 3rd layer. Several of these builds are made from all 51 units, have a total magnet count of 22608 neodymium magnetic balls (5mm diameter), and weigh over 11kg.

1) 0:36 Edge 2 Truncated Octahedron Solid Cluster - 38 units.

2) 1:04 Edge 4 Octahedron Solid Cluster - 44 units.

3) 1:25 Edge 5 Square Pyramid - A complete hollow version that used 50 units. A fully solid cluster requires 55 units.

4) 1:58 Edge 6 Tetrahedron - I used 49 units.
A fully solid cluster requires 56 units.

5) 2:15 Quasi Cubic Solid Cluster - 51 units.

6) 2:34 Edge 3 Cuboctahedron - I used 51 units. A fully solid cluster requires 55 units.

7) 2:55 Edge 5 Rectangular Pyramid - I used 49 units. A fully solid cluster requires 55 units.

8) 3:25 Edge 3 Truncated Tetrahedron - I used all 51 of my units in a hollow construction. A fully solid cluster requires 68 units.

3:49 Tutorial - shows how I built the inner edge 4 reinforced stabilised quasi rhombic dodecahedron subunit - both a fully reinforced version (480 balls each), and a top and bottom only reinforced version (432 balls each).

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

Music track is Undercover Vampire Policeman by Chris Zabriskie, from the YouTube free music library.

Undercover Vampire Policeman by Chris Zabriskie is licensed under a Creative Commons Attribution 4.0 license. creativecommons.org/licenses/by/4.0

Source: chriszabriskie.com/uvp

Artist: chriszabriskie.com
8 Large Polyhedrons From A Quasi Rhombic Dodecahedron Subunit | Tutorial | Neodymium Magnetic BallsConstructing An Icosahedron Cluster | 7700 Neodymium Magnetic BallsComplex Geodesic Dome | 150 Triangular Faces | 8656 Neodymium Magnetic Balls
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8 Large Polyhedrons From A Quasi Rhombic Dodecahedron Subunit | Tutorial | Neodymium Magnetic Balls

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