Blow Guns
Does any1 know what the blowgun things are that Ryan makes? and how to make em?
shareThe handheld ones may just dump an entire 12 gram C02 cartridge at once. Exactly how that's done... maybe adapt a C02 quick-change from an old-school paint pellet gun, or some other application (seltzer bottle, cream whipper?). Or, maybe just small (2.5 pound or less) fire extinguishers.
Fancier air cannons use an air tank and a solenoid valve (electrically operated); lawn sprinkler valves are a common choice.