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A Squirt Gun That Shoots Out Hot Molten Metal
Kevin Kohler (a.k.a. “The Backyard Scientist“) built a heavy duty squirt gun that shoots out a hot stream of molten metal
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A Rocket Powered Fidget Spinner
Kevin Kohler (a.k.a. “The Backyard Scientist“) built a custom fidget spinner out of an 1/4” aluminum plate with 3 E sized rocket engines strapped to it
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