The other day I wanted to bend some 3/16 copper tubing to a 1/4" radius. I don't have a tubing bender so I turned down the end of an aluminum bar to 1/2" and I parted it off to a thickness of about .190". I laid the tube in my milling machine vise, placed the disk down on top and tightened the vise, then I bent the tube around the disk to the desired angle. The vise jaws kept the tube from flattening. one of the advantages is that disks can be quickly made to handle a wide range of radii and tube sizes. Has anyone heard of this before? Should I call a patent attorney? (8>0)
Engineman