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On the forums at Crazy Builders, a maker named “Technician” has posted a series of videos and photos explaining how his quick dump valve high-speed marshmallow cannon works. The cannon is made from some PVC pipe, a propane camping lantern bottle, and some 1″ pipe. It’s a scaled-down version of a larger T-shirt cannon he built for a competition.

Marshmallow Cannon

Gareth Branwyn

Gareth Branwyn is a freelancer writer and the former Editorial Director of Maker Media. He is the author or editor of a dozen books on technology, DIY, and geek culture, including the first book about the web (Mosaic Quick Tour) and the Absolute Beginner’s Guide to Building Robots. He is currently working on a best-of collection of his writing, called Borg Like Me.

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