Thread: Quick fix for an air cannon?

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I need to make a few smallish air cannons for my haunt, and I was a little curious to see how everyone makes them. What is the quickest and cheapest way to build them?

Don't know if you've been here yet, but I know this has many different designs:

HauntProject.com - Your visual source for Haunting How-To's

I'm not sure I'd call it small but here's my air cannon...



It's very easy to build. I'm not sure how much smaller you can go on the valve or chamber and still get a good blast and report.

Thanks for the photo and link. By the way, the size on that cannon is fine, my main concern was the part where the air actually exits the machine. I wanted the hole to be smallish.