Here's a common corner for a sheet metal counter. There is a .6875 radius along the back bottom edge, and the intersection of the back and side. The intersection between bottom and side is a tight bend, around .1 or so. I'm not sure on how to get SW to figure this one out. The flat pattern is a bit funky in the corner...
I'm getting close, but figure there's probably a better way. I need to add material in an unfolded state, and if I add it properly it crosses, and fuses, a bend line in the flat.
So I can cut the corner, and mostly unfold, but I cannot get it to fully flatten. For our purposes, the corner must be cut in the middle.