The press brake double V-die tool, the Amada 12206, can be custom modified by grinding to allow the tool to "revisit" previously formed corrugations to allow the bends to be selectively increased to curve or straighten panels.

With the standard V-die, you get one chance to get the bend right because you can't go back and re-do a bend. This modified versatile V-die solves that issue I think.







Amada quoted £226 or $350 extra for the modification in addition to the £127 or $200 for the cost of the standard tool.