At pressures that high, I would definitely buy something rated for it. I'd be too paranoid to enjoy using the thing. Aren't those galvanized steel caps casted? I don't like the idea of casted, crappy threads. If I was designing a hand-held device for 1500psi I'd actually design it for like 10,000psi...

That is really clean and very nice. I love that it's a hybrid. So awesome. Nice job!

Lasagna cannon fired while in oven.

It was an April fools joke. Teehee

I'm nearing the design completion of a mold-gas pneumatic build. It has a larger than typical pressure chamber and a large cleanout-style threaded plug at one end. You fill the chamber with sourdough bread starter and cheese and wait for gasses to build then fire the cannon. I know the rate of fire ...

PVC vs ABS crush test


PVC air pressure failure


ABS air pressure failure


ABS wins.

It looks good to me. Keep us updated!

300fps is at the upper end of hardcore nerf performance. That's awesome.

Yeah I'd just buy one of those things for sure.

Anatine Duo wrote: ↑

Mon Mar 07, 2022 11:44 am

How does your dog aim it?

Come on man. That's not what he meant and you know it. He said "tennis ball gun for my dog", so clearly what he's looking for is a gun made out of tennis balls that he will launch his dog from.

It looks beautiful! Excellent job.

You can use X-shaped o-rings to reduce friction. I use them on my piston with standard o-ring compression and I can easily move the piston by pushing it with one finger.

Personally, I have only made hybrid cannons and I never had to understand how a pressure regulator works, so I don't know how a pressure regulator works. The ignorance isn't by accident. When I can, I let the rest of the world do the thinking and heavy lifting for me. The pistons in a hybrid are ver...

That's a lot of work to go over. Not sure you'll get many bites to be honest.

Download GGDT (gas gun design tool) and use it to model the cannon's performance. Look around in the pneumatic cannon section for design ideas. I'd imagine a piston cannon would be a good choice. Air is thick and soupy, so a large enough piston is needed to avoid choking the thing off, maybe around ...