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This clever hack from Nederlander Ruud Setteur is written in Dutch, but the pictures tell the story pretty well.

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Make a peristaltic pump

Sean Michael Ragan

Sean Michael Ragan

I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I am a long-time contributor to MAKE magazine and makezine.com. My work has also appeared in ReadyMade, c’t – Magazin für Computertechnik, and The Wall Street Journal.