Well worth using for bending angle iron or flat bending on making "flat corners" that are hard to control with out crimping. with setting a good spacing for various width could also be used from thin up to very heavy bar stock.
Biegevorrichtung für große Radien | SpaceFlakes.de
Angle Grinder Scoring Jig by ruxu -- As many of you know one way to bend thicker sheet metal without a brake is to score the backside of the sheet at the bending points. Freehand scoring with an angle grinder is not that easy if you try to get accurate bending lines. I am just making a swarf tray from 1,5 mm steel plate so I had to make a quick improvement to the process. What I did was a U-shaped slider that I fixed to the free handle thread of the angle grinder. This U-shaped slider…
How to Bend Sheet Metal: 13 Steps (with Pictures) - wikiHow