I've been working more on this shroud (http://communities.ptc.com/thread/56128) and now I'm trying to figure out how to control the boundary conditions of a style surface.
The boundary conditions at my edges where I have control curves are good (i.e. they are curvature continuous and normal to the plane, but in between control curves the surface does not keep that condition.
This becomes obvious when I thicken the surface with a normal offset. If the surface were normal, the part of the edge would be coincident with the horizontal red line (surface edge).
All of my edged except for those on the inner circle have edge control arrows. Why don't the arcs?
