If I wanted an extruded cut to span across a bend in a sheet metal part, and I wanted that cut to be perpendicular to each surface it cuts through so it gives me a normal flat pattern, is there a good way (or any way) to do this in one extruded cut feature?

Just to see if it would work, I tried making a 3D sketch on the surface I want to cut through, making a reference plane to tell it which direction to go, and giving it a draft angle to cut perpendicular to each respective surface. This didn't really work out so well, but I was actually surprised at how close this came to working; I figured it would give me an error from the get-go. Adding the draft angle caused some really funky geometry though, so this is what happened after just cutting normal to the reference plane.

I could just get this done by making two separate cut-extrudes, but I was curious if anyone out there knew a better way to accomplish what I'm trying to do.