I love spud guns. But I could never get them to work properly. Getting the mixture right and keeping out the damp always seemed a difficult task. I never managed to make a gun which would fire reliably.
But this week I saw a local place selling off 5 kg carbon dioxide fire extinguishers cheap. And I wondered if perhaps I could use one for a spud gun. I guess the critical factor is whether or not the carbon dioxide can exit the cylinder quickly enough. But even if it can't, one could make a gun with a smaller barrel I guess.
Anyone tried this? Is it a workable idea? Any idea how many shots you'd get from 5 kg of carbon dioxide? It should be possible to work it out, but after a few moments thought I can't see how.
And, yes, I'll be careful.