Are there any instructions on the site (or any other site) on building an idiotproof and easy/basic spud gun? Yes, I have searched, but, it's still too broad..
Also, what is with the ratios? I keep seeing people doing 1.5:1 but i also see that you should try a 1:1 ratio and such..
and i want to build a 2.5-3 ft gun.. but i would like it to have a bit of power..
the guns that i saw on the site, that i thought looked cool were these :


are any of these combustion?? i figured i try something like that, but on a smaller scale.
any help would be great thanks.