Some cubes of ice, a set of dice, a battered cardboard box. GIRL 1: Now the next shape is a sphere. Try to make yourself into a sphere – a big ball! The boy tries to make himself into a sphere ...

[DaveMakesStuff] demonstrates a great technique for 3D printing a sphere; a troublesome shape for filament-based printers to handle. As a bonus, it uses a minimum of filament. His ideas can be ...

Over the years, mathematicians found that the twisted shapes exist in dimensions 2, 6, 14, 30 and 62. They also showed that ...