The 120 Cell is a 4D structure made of 120 regular dodecahedra. This "shadow" of it has the form of one large dodecahedron filled in with 119 smaller dodecahedra. In 4D all the dodecahedra are regular, but in this 3D shadow, angles are necessarily distorted, so only the innermost and outermost dodecahedra appear regular.
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(Posted from rapidprototypechina.com) by · · · — — — · · · The Starting Of Speedy Prototyping and 3D Printing Rapid prototyping is the creation of 3D objects employing advanced manufacturing technologies. This technologies has only been about because the 1980s. Nowadays, the use of speedy prototyping is utilized by manufacturing fir... Read more on http://www.rapidprototypechina.com/the-beginning-of-speedy-prototyping-and-3d-printing/
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