I am new to mechanical but am having fun learning medusa4 -- its capabilities are very impressive.
I have been going through the tutorials and documentation, but still have a question about the 2D sheet metal design process. Simple sheet metal designs seem easier to generate in 2D rather than the 3D/unfolding approach, and the "drafting an ideal development" in the sheet metal document outlines the process. However, going through the steps ends up with a "sheet not valid for modeling" error. I must be missing something important, and any suggestions would be great.