I had a 16" length of 1 5/8" C/M floating around. Marked it off in 1" intervals. Put it in the bender. It was a pretty good amount of effort, but nothing terrible or unexpected. I'm guessing the high heat outside helped cause a high amount of spring back. Right at 6 degrees. I found that I need a 3 1/2" lead for bending. The V in the pic is where the bend started compared to the very front of the tube, which is what is held in place by the clamp. Also found out that 16" is not enough for a 90 degree bend. Going to land closer to 18-19" when all said and done. Cleaned the rust off of some of my old bars to try bending them for a comparison, then I found out that the majority of my Comp Engineering cage was 1 3/4" tubing. Didn't feel like cleaning any more tubing, just to bend it.