Treadle Finger Engine Dual Flywheel
thingiverse
<iframe width="647" height="364" src="https://www.youtube.com/embed/0xNstjSLL1U" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe> Here's another finger engine, this one with a dual flywheel design. To build it, you'll need some glue and 3/16 inch metal rod. I personally prefer Gorilla Glue because it expands as it cures, creating a tight fit. The lever.stl file requires printing with supports, but the rest of the parts don't need any additional assistance. Leave the parts slightly loose to prevent them from rubbing against each other. It takes some practice, but this finger engine is a lot of fun to play with on your desk.
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