I'm having a problem with a surface I'm trying to flatten. The resulting shape of it is very weird and incorrect, and the higher the accuracy setting, the worse it is. I cannot post the original file where this part was created, but it was created using Surface Loft feature with some guide lines.
This surface is compound, but mostly bent in one direction, so if it were created from paper, it should easily stretch into this shape.
I think Surface Flatten tries to shrink it instead of expanding or something.
I'm attaching the file, can somebody tell me how can I make Flatten work here? File is in 2015 format.