I am trying to create the sheet metal form in the attached PDF. I have tried many approaches to achieve it. 1)Starting with a sheet metal body, flattening and inserting sketched bends. 2)starting with a solid and converting to sheet metal. 3)starting with a flat sheet metal profile and inserting sketched bends. 4)using forming tool in the unfolded state and folding. I get an error just trying to select an edge using the edge flange tool.  This seems harder than it should be.  Any help is appreciated.