Hello Brian,

that's it, what I tried to explain in this post: http://moi3d.com/forum/index.php?webtag=MOI&msg=8745.4. Maybe it was a to short description. Useful is also to check the uv structure of the cone and unwrapped surface with the iscocuve command. Switch from both to u and have a look to both faces. Also helpful can be to place an object e.g. a normal line or a sphere to the outside of the cone before flow curves to the unwrapped surface. It gives you later an orientation information. For simple geometry not necessary, but the day will come that you can't decide if the result is correct (complicated cutouts/asymetrics).

Have a nice day and thanks to Michael for the details
Karsten