I am certainly new to curved folding, but not new to sheet metal forming. I have a project that is currently over my head. What I want to do is provide a basic 2D geometric shape of an open obround slot projected perpendicular to its plane to define the curve in 3D space for a curved fold. For clarification, see the pictures I have attached. Based on the pictures I have seen posted by others on this site, it appears to be a relatively simple task to do just one of these folds from a defined curve, (a task which I have yet to tackle successfully) but I'm not certain how to define a curve for a developable surface from a pre-constraining set of geometry. The only secondary constraint other than the given geometry is that the developable surface at the apex of the curve in Z must be at 45 degrees. The attached images are best-guesses of the curve, and surfaces from Autodesk Inventor, but the result is made from two pieces and definitely not a developable surface.
I am new to Rhino, Grasshopper and Kangaroo so am still in the early stages of learning how to get what I want out of them, but am amazed at their flexibility over the cookie-cutter 3D modelling programs I am used to in industry. I am also familiar with Calculus from school almost 20 years ago but I am finding much of the terminology such as osculating planes, TNB frames, curvature and torsion outside of the scope of my experience. Until now, I've relied on the software to figure this kind of thing out for me. Now that I am having to define them for the software, it's a completely different story.
Any direction, assistance and Grasshopper sample files in this bent that I can learn from are more than greatly appreciated!