Gears an interlocking
puzzle

 | The Gears is a very interesting and unexpected
descendant of The Clips puzzle. |
 | It looks like a set of nine intersected sticks but
in fact it's a three-piece coordinate-motion puzzle. |
 | To assemble it you have to put together three parts
moving them simultaneously towards the center of the puzzle. |
 | Although it looks pretty complex, it can be made out
of flat pieces of wood or plywood using an ordinary scroll saw. |
 | The Gears has a hollow cubical cavity inside of it,
so to some extent it's a Box Puzzle. |

 | The space contain a little secret which makes
assembling more challenging. |

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