Hi Martin, I don't believe that's possible with the current mechanism that Rail Revolve uses, which is an exact construction technique, meaning it applies weights in such a way that the revolved surface exactly passes through both the profile and the rail curve.

Something like what you are describing there would have to be done with a much different approach, more like an iterative shaping type mechanism that generates a bunch of cross sections and essentially lofts a surface through those sections. Sweep works like that.

But I'm also not sure exactly what kind of result that you're looking for either.... What kind of behavior would you expect to see in the shape where the path is going up or down? What if that path goes up so far that it actually goes higher than the top of the profile?


For now anyway you would probably need to put in several more profiles and then use Network to build something like that rather than rail revolve.

- Michael