SpudFiles

I'd have to say this IS the most ghetto gun posted for a couple months. Obviously, it was 100% free. Just two Pringles cans duct taped together. With one, I made an about 1" diameter hole in the bottom. With the other, I made a tiny hole in the bottom. Then I used about 3 layers of duct tape over the whole thing.
To shoot, you put a tennis ball or half a water bottle with paintballs or gravel or whatever into the top can. Then you spray some hairspray or lighter fluid in the tiny hole in the bottm, shake it up, and stick a match in the bottom. It gives quite a satisfying BOOM!
I was bored, what can I say?

Just like my first gun.. Oh how I remember the days with out barrel sealers or sprinkler valves and just go back to the basics... Good old fasion combustions. Ohh those where the good ol days.

Oops. Got the picture titles all mixed up.

Professor, your not old enough teo remember those days, i'm guessing from the video clip i seen of you, you wasn't born yet. How you going to light that off with your ignition hole buired in the ground? We allways coated the inside walls of the morter tube with zippo lighter fluid, drop the tennins ball in, then the match. If you don't berry it, how you gonna hold it? In your hands? If you do, your asking for trouble!!

You can hold it or prop it up against something. It's at an angle, so you just stick a match in. It's really not that hard.