potato cannons are a ton of fun, and you need to learn how easy it is to build one in your backyard. Do not get me wrong, these are not potato guns - meaning you should never even consider pointing one near people, but they are potato cannons that can help student learn about the physics of propulsion. Spud guns have been used for decades to teach kids about physics, and there is no reason that you should not have a potato cannon of your own.

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