nosebleedXD wrote:Anyways, currently I am waiting for my mom to come with a new can of axe.
Axe is a common fuel. Personally, I would suggest a NOOB start with a disposable butane lighter. It's cheaper and there isn't anything in it that will gunk up the inside of the gun. MAPP is good but a bit $$ since you'll also need a torch head (ot at least a valve). Long term, figure you'll spend the $$ and use either propane or MAPP.
So once it arrives, I will record my first potato gun shot into one of the new houses in my new area.
Now all you have to do is get the mixture correct. I suspect it take a few tries. If you have an farm supply store nearby you might get a 60cc plastic syringe (~$2). That, plus a disposable butane lighter, is the cheapest fuel meter you can build. It'll be a lot more consistent, and powerful, than spray-n-pray fueling.
Btw, about the cap situation, as i mentioned before, it was too tight to close...
Am i suppose to tighten the cap all the way? or ...
anyways i've been taken a sand paper to sand in between the threads of the cap and its getting a little big looser and looser.
The first thing to do is to use a razor (or small file, or sand paper) to clean up the flashing marks in the threads. Latke has a page that discusses cleaning up the threads. If the threads are banged up then clean that up as well.
The cap shouldn't screw on all the way. IIRC, the cap is a pipe thread, that means the threads are supposed to tighten up as the cap is installed. The cap should stop turning with a couple threads still showing. The cap will leak a bit since it really isn't designed for a pressurized system. Minor leakage is no big concern. Big jets of burning fuel would be a problem but I've never heard of that hapening.