A while ago, I saw something on the internet that was really cool. It was a small fountain that appeared to flow backwards. Unfortunately, the commercially available model was quite expensive. So naturally, I built my own.Here is the one I first saw: As seen in my PVC Instrument Intractable, there a...
By: tallman1996
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from Instructables: exploring - technology - robots http://ift.tt/1Iwi0uP



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