Hoberman Sphere (Cuboctahedron)

number of rings

1

2

3

4

lift

1.5

scissors

6

12

18

24

diameter of cylinder

0.07

size of nodes

0.07

Expandable flat rings made of scissors are placed on a sphere's great circles along the edges of an invisible cuboctahedron. The rings can intersect each other at the hinges, the joints of the tips, or the legs of the scissors. The number of scissors in a ring must be divisible by six. The geometry of this assembly corresponds to that of a Hoberman sphere.