lol, that girl is my sister.

thanks for saying my gun was nice
I thought the plug had to come off

I want to add a chamber fan to my gun, and seal the back plate on, but, doest the back plate have to be off when inserting a projectile, so the air doesn't compress in the chamber?

add a potato? it usually helps me

i know, i just think the C:B ratio is outta whack

Ok, I just built my first gun, pics below. Before I added the propane today, I was using spray ether, but had problems. I would spray a half second, close the cap, and try to ignite. nothing. Then I would unthread the end-cap, waft the fumes a couple of times, and KABOOM, probably 100 yards. I was u...

I saw your gun earlier...amazing. I love the LEDs, and thanks for telling me about the Green Hornet.

What would be the purpose of putting fiberglass over PVC?

I want to make a pneumatic as well (Put my dads 55 gallon 220v air compressor to use), but I want one I can bring anywhere, not having to worry about if there will be an air compressor near by.

Thanks. I think i'll use the BBQ igniter. I think i'll go for the ported barrel as well.

Good Job. If that's you in the pictures, I am definitely impressed, as I find it extraordinary that such a young person is getting into chemistry and the finer points of ammo at such a young age.

I've wanted to build a Potato Cannon for a long time, but i've never really had the motivation to do so until today. I went to my friend's open house, where a couple of friends brought their cannons. I am a perfectionist, and like things to look nice. So naturally, it bothered me when I saw everyone...

Thats simple and effective. Thanks

I'm new to the whole spud cannon thing, but I really admire you Joel. The fact that you you make a living from selling spud cannons is phenomenal.