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the most important thing in this gear man are the gears. these gears are made from a
tomato sauce tube lids which have serrations which mesh well with each other. you make
two cardboard frames and you make this assembly. if you rotate the lower stick the upper stick
rotates. if you place it under a fan you can see the fan rotates the gear below it which
in turn rotates the other gear and the man goes round and round. the gears mesh with
each other and you can see this in a closeup view. if however you hold the stick then the
whole frame moves and the man remains stationary.