I’ve made a shape that acts like a shell in Vectorworks. In my first prototype I was able to import it into Rhino and just mesh difference everything as a could with a shell leaving me with the desired holes. Now I want it to be more accurate.
But when I started with the mesh difference (on a fresh resized shape), suddenly it recognized the outer layer and the inner layer of the meshes separately. And not anymore as a shell/mesh?
How can this happen? And how do I get this outer STL and inner STL to act like a shell again.
Or can I create something directly into Rhino.