Looking to see if anyone has tried to twist 2" thinwall square tubing. I have a project where I need to put a twist into about a three foot lengths of 2" square tube.
I'm thinking that if I insert a loose fitting round pipe inside the square tube and would then pack the tube with sand and weld caps on each end that this would stop the tubing from buckling. I have a large old pipe threader which I'm going to try and do this cold also since it is rather large of an area to try and heat up uniformly at once.
Any thoughts or other ideas and practical experience would be appreciated.