I made these because I was curious how well double helical gears would work with a small number of teeth. Turns nicely, and is very fun to play with. If you blow on it or spray water over it it makes a nice turbine.


IN: 2.499 w x 3.573 d x 1.237 h
CM: 6.348 w x 9.076 d x 3.142 h


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