Here is my solution to bending plate steel, as for a ~6" radius I would agree for this one off part it is cheaper to buy than to fabricate Jeep corner armor.
20 Ton Press Brake DIY Builder Kit
Press Brake kit comes unassembled, you do the final assembly and welding.
Designed to fit the Harbor Freight 20 ton press.
Press Brake includes adjustable back stop and side top for accurate repeatable bends.
Max Bending Radius (deg.) 110
Max. Bending Capacity 3/8" plate
Max Bending Width 19.25"
Tools required for assembly, welder, grinder, level, small square.
THe DIY builder kit includes the following parts:
Press brake base plate
Top machined die
Back stop guide rails
Top die guide rail rod
Top die guide rail DOM tubing
Top die ram center 1.75" dia tubing
(2) 3" threaded rods
(2) Shaft collar locks
Click here to view Youtube demo video.
[ame="http://www.youtube.com/watch?v=-vwacbaOXjU"]YouTube - 20 TON Press Brake DIY Builder Kit @ Swagoffroad.com[/ame]