Built back in 2008, I used Lincoln's version of Missile rod to weld the cut-off cast steel C clamps to the frame. I used 3X2 angle for the bending bar so I could bend past 90 degrees to allow for spring back. I haven't used it a lot, but it don't eat and parks out of the way. Thanks for looking.

The test bends were 16 ga

http://s1298.photobucket.com/user/cy...Metal%20Bender