I used a vice... We adapted a vice to have smooth jaws so as the not impart the cross hatch pattern onto the exposed plates. We welded some smooth angle iron into the jaws, which also raised the jaw lip up a little so that you can make tight right angle bends by pounding it over with a leaded plastic mallet (rubber was too soft). By the way, drill after bending, and leave a little extra to cut off straight afterward, the plates move and stretch. If you do a lot of work though, you will want to buy the hole punch, it's much much faster and cleaner.
Originally Posted by mcs
"Dear future generations: Please accept our apologies. We were rolling drunk on petroleum."
— Kilgore Trout (via Kurt Vonnegut)