Hi all,

I'm in the process of getting ready to pour a cylindrical tube out of epoxy or polyester resin. It is 0.5" thick walls with an ID of 14". The cast will be 30" tall and needs with withstand internal pressures of 45psi.

I have obtained metal duct work for the mold sides and an environmental chamber to cast the piece in. I'm looking for any advice on how to apporach casting something of this size (~3gal). Would I have to pour in layers or would it be possible to pour all at once? What sort of resin would be recommended for such a task?

Thank you,

Jon

Why does it have to be cast? A simple laminated tube would be multiple times stronger, cheaper and lighter. I absolutely agree, that this is a dangerous idea. Theoretically the resin is quite strong, but in real life there is internal stress from the curing, etc. And epoxy is far to brittle. you wouldn't use glass either, I think.