Threadjack continued.
A brake is a big investment and a workbench hog, but, being a very simple tool one can be assembled for the job at hand, then knocked down.
Other, more adaptable hand tools might serve nexxo's modest need better. Vise-grip makes a
Locking Sheet Metal Tool. It's essentially a normal vise-grip plier with wide steel plates welded to the jaws, though more thoughtfully designed than I make it sound. I reach for it often. Another tool I can't find any links to but was lazy enough to buy at a store is no more than three plates of steel laminated together, the middle plate being inset 3/8" or 1/4". You fit the work into the slot, and bend. I use it mostly for folding safety edges on sheet metal. Such a tool could be easily shop-made for the 5/8" legs nexxo wants.