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youngmaster 1 point ago +1 / -0

I know of a guy called codyslab on YouTube who shot some rounds from a rudimentary cannon of sorts using the gunpowder made with the potassium nitrate he got from pissing on a batch of hay for over a year. I’m pretty sure he has a bunch of videos on it.

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FormerGraveheart 1 point ago +1 / -0

Sweet, thank you.

Pissing on hay for an entire year... not very quick production, though.