Marble Machine Gun

Cannons powered by pneumatic pressure (compressed gas) using a valve or other release.
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beebs111
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depends if you actually drill through the pipe, or jsut stick them inside, i would use epoxy if you are going to be putting holes in a pressure vessel
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fretmelter
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Joined: Mon Jul 09, 2007 9:34 pm

yeah i agree ^ i wouldnt even put a hole in it cuz or pressure if the plug fails ita a deadly projectile well at least it could poke an eye out. just glu some bristles on the on the inside of the barrel.
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