ASTROLABACUS™ puzzle - precision-made edition of a classic mechanical challenge.

This mechanical puzzle comprises six hinged segments. Each segment contains two colour-coded tunnels and three coloured balls. As the hinges articulate, tunnels align to form a continuous loop; eighteen balls circulate and can be shifted. The puzzle quickly becomes scrambled; the objective is to return each coloured ball to a tunnel of the same colour.

All puzzles are FDM-printed in ABS and hand-assembled. Each piece is individually finished; minor variations are normal. Limited production.

The puzzle is intended for normal use and should be handled with care. Components are joined using printed pins; disassembly will cause damage.