Uploaded December 2021 | Updated September 2026, 7 hours ago
Large magnet shapes made entirely from a repeating octahedron subunit of 36 neodymium magnetic balls each (5mm diameter ones). The unit is made from 4 rings of 9 balls simply pinched into triangles at each end as shown. All units should be made and connected with the same polarity, that is wound in the same direction from the same end of the same line of magnets. Turning a unit upside down so the opposite open triangular side is visible on top will reverse its polarity, so keep them all the same way up as you make them.
The open icosahedron without its pentagonal vertices is made from 20 × 12 = 240 units, which is 8640 balls.
The filled in icosahedron of edge 5 units is made from 20 × 15 = 300 units, and 10800 balls.
The larger dodecahedron dome is made from 15 subunits of 30 octahedrons, so 15 × 30 = 450 octahedrons × 36 = 16200 balls. A complete sphere of 20 subunits at that scale would collapse under its own weight, but the large dome is well supported.
The geometry of these pentagonal designs with octahedrons is approximate and not exact, as the angles between octahedrons don't form the pentagonal rings exactly but leave a small gap that is mostly closed by the magnetic force, but still detectable if you look closely enough.
#ledwatchman #Neocube #Neoballs #Nanodots #ZenMagnets #Speks #Buckyballs #NingoBalls #CyberCube #KlikyBalls #howto
Music track is Electro Sketch by Kevin MacLeod, from the YouTube free music library.
Electro Sketch by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 license. creativecommons.org/licenses/by/4.0
Source: incompetech.com/music/royalty-free/?keywords=electro+sketch&Search=Search
Artist: incompetech.com
Large magnet shapes made entirely from a repeating octahedron subunit of 36 neodymium magnetic balls each (5mm diameter ones). The unit is made from 4 rings of 9 balls simply pinched into triangles at each end as shown. All units should be made and connected with the same polarity, that is wound in the same direction from the same end of the same line of magnets. Turning a unit upside down so the opposite open triangular side is visible on top will reverse its polarity, so keep them all the same way up as you make them.
The open icosahedron without its pentagonal vertices is made from 20 × 12 = 240 units, which is 8640 balls.
The filled in icosahedron of edge 5 units is made from 20 × 15 = 300 units, and 10800 balls.
The larger dodecahedron dome is made from 15 subunits of 30 octahedrons, so 15 × 30 = 450 octahedrons × 36 = 16200 balls. A complete sphere of 20 subunits at that scale would collapse under its own weight, but the large dome is well supported.
The geometry of these pentagonal designs with octahedrons is approximate and not exact, as the angles between octahedrons don't form the pentagonal rings exactly but leave a small gap that is mostly closed by the magnetic force, but still detectable if you look closely enough.
#ledwatchman #Neocube #Neoballs #Nanodots #ZenMagnets #Speks #Buckyballs #NingoBalls #CyberCube #KlikyBalls #howto
Music track is Electro Sketch by Kevin MacLeod, from the YouTube free music library.
Electro Sketch by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 license. creativecommons.org/licenses/by/4.0
Source: incompetech.com/music/royalty-free/?keywords=electro+sketch&Search=Search
Artist: incompetech.com
