Loft Surface – One Rail mode. In this mode you need to have a cross-section…
Vectorworks Tip #177- 3D Modelling – Loft Surface – Loft With Bi-rail Sweep
Loft Surface – Bi-Rail Sweep mode. In this mode you use a cross-section through your object and two rails to control it. This allows you to create very complex shapes very simply. As the rails move closer together to further apart, the profile stretches to match.