12 1314

15

16 17

18

19

A6 or A7

Hinge unit: make 16 Method of connecting the hinge unitto a left hand unit.A similar principle is used to connectthe hinge to a right hand unit.

Construction of 3 left hand unitsand 2 hinge units to form a half cubecluster.

The positioning of the 2 hinge unitsvaries. See next drawing.

8 half cube clusters linkedby 8 hingeunits

position of hinge units

Two of these constructions are required

Some of the shapes made by flexing the construction

This star will fit into the cube (above right)

indicates cluster made from right- or left- hand units