2rail sweep surface not exactly on cross section line?

Hello- please just post a file with the input objects and the current result.

-Pascal

meind schiff.3dm (4.1 MB) meind schiff2.3dm (3.9 MB)

Hello - it would be helpful if you post the part of the file that you are asking about and not make the people trying to help you find and guess what you want.

Your Sweep is off because you asked for curvature/G2 continuity in the sweep and your input curve is not even tangent to the edge there.

-Pascal