And another thing

Thanks for the criticism. I do appreciate it. I’ve reworked the item with a different approach. I think my line work is sound. I’ve two methods shown here. The first is a blend of surfaces. It’s showing some strange behaviour.

LineWork.3dm (2.5 MB)

The surface to the right is a loft while the other surface is an extrusion of a curve.

Next was a two rail sweep of the profile curves. After the surface is created, I hid the curves and extruded the surface edge. What I don’t get is why even when selecting the edge of a surface and extruding it, the zebra lines will not match up.