I'm making something non plumbing related out of 22mm copper pipe. I was just wondering what the bending strength of said pipe might be over say a 3-4' length.
Also, would filling the pipe with expanding foam increase the bending strength at all, or would it just help avoid kinking at the bend point. I know I could insert a dowel if I could find one the right diameter but it would have to be a pretty solid snug fit to avoid rattling
Also planning to drill holes across the pipe at different places to insert U bolts, with Well nuts in the ends holding eye bolts and figured the foam would help stop the weakening the the cross drilling would cause.
I chose copper because of the pretty colours it polishes up to, but need to add strength because a broken pipe could injure, and 22mm because the tradeoffs between cost, weight, and strength.
Any suggestions.