My first real work with Rhino 6 and I am encountering a number of unexpected problems. This surface reports as valid but does not render or take a displacement. The boundary frame is fine but the main surface is wonky in ways I don’t understand. The wireframe looks fine but it does not shade or render. I have include the Rhino file.
This is one of 12 regions created in the same way. 3 of those regions behave the same as this. The rest perform as expected. Any thoughts as to how I can make this work for displacement.
surfWeird.3dm (6.1 MB)