I’ve been wondering about this potential capability for years, and I am wondering if anyone has any pointers. In yacht design we are often working on surfaces that have continuity in some areas, and no continuity in others (kinks that turn into smooth surfaces). Historically a work-around has been to collapse points so they are almost coincidental, however the surfaces near these points is quite horrible. An alternative approach would be to create two surface whose order in the edge direction is the same, and make sure that the control points are identical. This would make sure there is no gap between the surfaces, and would allow for continuity where needed, and not in other places. Anyone have any idea how to “connect” two surfaces in this way? A plugin anyone?