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[youtube http://www.youtube.com/watch?v=hrnYTXtbFmM&hl=en&fs=1&rel=0&showinfo=0&ap=%2526fmt%3D18]
Matthias Wandel, whose Marble Adding Machine was featured in MAKE: Volume 20 and whose homemade bandsaw appeared on Make: Online last month, is up to his usual shenanigans with a modular marble run featuring an excellent marble pump. Interested in building your own? Wandel is selling the plans for fourteen bucks. [Thanks, Don!]