SELF-FLOWING FLASK PEN HOLDER
grabcad
It is a perpetual motion machine invented by Robert Boyle, appears to fill itself through siphon action. The larger weight on the flask forces water down and around the narrow neck where the weight is less, and then it flows out the orifice at the top to replenish the water in the flask. I hope it will work...(: one way to prove is to 3d print it...
Download Model from grabcad
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