The rhombicosidodecahedron to scale 3 (and almost 4)
The rhombicosidodecahedron to scale 3, view 1
5452 pieces: 1245 balls, 3510 rods, 42 pentagons, 655 squares (28.52 kg)

The rhombicosidodecahedron to scale 3, view 2

The rhombicosidodecahedron to scales 1 and 3

However, these legs look too big. Because of that, and of the easy construction of the rhombicosidodecahedron to scale 3, I tried to build one to scale 4. Only, the design of the upper section of the legs had to be adjusted to the new scale (each one requires now nearly 700 rods). But the construction, quite simple at the beginning, collapsed near completion. In my second attempt, really near indeed:
The rhombicosidodecahedron to scale 4 (incomplete)
8357 pieces: 1790 balls, 5675 rods, 42 pentagons, 850 squares (43.74 kg)

The rhombicosidodecahedron to scale 4 (collapsed)

Probably, the construction could be completed using some auxiliary structures. But I think that I will not retry it very soon. This is one of the rare moments in which one regrets having many Geomag pieces.