I have created a design table to create an ellipsoidal head for vessels. The table works perfectly and I can create any size or thickness that is required to use in my models. The problem comes when I put these parts into a drawing the lines where the crown and the knuckle radi meet shows on the drawing. I have attached a sketch, and a model showing edges and no edges and the 2D representation. When looking at the end view of the modeled head in a 2D drawing, the point between the crown radius and the knuckle radius creates a line. How can I hide this line in my D drawings?