I have only used the bender for 3/8" x .06" and 1/2" x .03" tubing so far. On those , it did an excellent job, with little effort.
-The bender comes with a nylon lock-nut and a thin jam nut for the roller bolt in the handle. The locknut cannot be used, as it's too thick, and will hang up on the base mounting bolts.
-Even with the jam nut, the bolt will drag on the base mounting bolts, so I machine the heads on them down to add some clearance. (see pic) This would be easy enough to do with a grinder.
-Any reason why the decal is installed upside down? (see pic)
All in all, a nice bender at a great price.