I'm trying to fill the open surface on this wing tip. I selected the Open Loop, then Insert>Surface>Fill and got the error "The patch cannot be created. Try a different curvature method." I played around with the settings within Fill Surface to no avail. Advice? Ultimate goal is to convert this surface model into a solid model and shell it. The material thickness of the part is .060" and I've only been able to Thicken up to .030" before it errors out, so going the solid and shell route. The surface model represents the outside/OML of the part.