[NightHawkInLight] a.k.a. [Ben] recently built an awesome high power air cannon out of PVC pipe. PVC air cannons are great, and everyone should build one of these at some point in their life, but what ...
Not to be outdone with hair spray powered PVC cannons, [William] created an even cooler device: a cannon powered by dry ice. Once dry ice is loaded into the pressure vessel, a burst disk is placed in ...
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