Flatten surfaces in correct Proportions

Hey Guys,

I need help. I’ve created a polygonal Form with lots of surfaces and would like to build it. In order of doing that I need to find a way to flatten all the surfaces/align them on the C-Plane without losing the correct proportions. Yet I only managed to get a 2-d surface from the top view, but because of all the angles the actual surfaces are bigger and not in similar to the ones I made. Please help me:) Thank you in advance

Have you tried the UnrollSrf command yet?