Experimenting with pneumatic shock-cannons... like potato guns without the potato. As a noisemaking device. For... reasons.
Make a simple one with an (off-label) valve and a pressure chamber and a resonating outlet. No boom, or bang, more of a loud fart. Not impressive. I've used an industrial quick-release valve before too, for similar results. A LARGER quick release valve costs too much... but there are other ways.
Did a test with a piston-valve (specialy built into the device) in a simple configuration that looked iffy to me, but the inter-tubes swears it works. It didn't. Work for me at least. That time. But there are several configurations, and a variety of different design decisions to make.
I manually forced a few things and the piston-valve direction is definitely very promising... got a decent bang-ish result.
Now, though, I want to use a design that incorporates o-rings. Large o-rings, but I don't know WHICH SIZE I need yet, so I can't BUY one from Grainger.
So I need an o-ring splice or creation kit. These cost about $30 and can be provided by Grainger or Austin Seal on Monday or so. Very sad. I want one now! I have experiments to conduct this weekend! Money to spend! Things to not blow up!
Does anyone I know have an O-Ring splice kit with 0.270" cord? In town? Before Monday?