| | |  Magnetic icosahedron. Ed builds strange shapes out of magnets some times.  Of course it's mathematically interesting to see what shapes can be built this way, and a hollow icosahedron is pretty impressive!  This one is made out of high-strength neodymium-iron-boron magnets.
 Source: Force Field
 Contributor: Ed Pegg Jr
 Acquired: 8 April, 2004
 Price: Donated
 Size: 2.5"
 Purity: <35%
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