About Draft Connections for Surfaces
Use draft surface connections to constrain a surface boundary at a specified angle relative to a datum plane or another surface. Typical cases include an open boundary, COS and datum plane.
To allow a surface connection at a draft angle to a plane or surface, the following requirements must be met:
The boundary curve for the connection must lie on the surface.
All cross boundary curves must have draft connections to the same plane or surface and at the same angle.