Hi, I',m currently making a simple all metal air cannon. Which i need to fire remotley. I hear alot about sprinkler valves. But they ushally are plastic. Also they seem unavailable in Britain. Does anyone know where i can find other cheap solenoid valves or maybe motorised ball valves to pilot a pis...

I've got a fire extingusher with a 30mm diameter thread and want to connect this to standard fittings. I started a topic about epoxy which allthough the methods seemed excellent, It required me to downsize the fitting from 3/4 to 1/2" to allow for a epoxy resin plug. Wanting maximum performance I wa...

Thanks alot, Both tutorials are excellent. I'll probably do this method.

Another question though.

In one of my fire extingushers, allthough the threads don't quite marry a 3/4" fitting pushes quite snugly inside. Would it be easy to Braze/Weld it?

(I'm someone who's never brazed or welded)

I'm making a very simple air cannon. I have 3 old fire extingushers all different sizes. Deciding these would be great as air canisters and nice and simple. However they are all non standard metric size threads. For instance the one i plan to use has a 30mm diameter opening. Now i want to connect a ...