The giant icosahedron
This giant icosahedron is made with five reinforced rhombicosidodecahedra (those on the yellow columns), and seven normal rhombicosidodecahedra. The edges are «tubes» made of square antiprisms. With these supports, and in this position the construction is not very difficult; I think it would be if we tried to build it on one of its triangular faces (as the two versions shown in Smaller giant icosahedra were). This model is built to scale 9.28, being 1 the normal, 30-rod, 12-ball icosahedron.
The giant icosahedron, side view 1
6859 pieces: 1595 balls, 4485 rods, 239 pentagons, 540 squares (36.50 kg)
 Without supports: 6124 pieces: 1420 balls, 3960 rods, 204 pentagons, 540 squares (32.42 kg)
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The giant icosahedron, side view 2
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The giant icosahedron, bottom oblique view
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The giant icosahedron, top oblique view
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The giant icosahedron, inside view
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