Hi Pilou,

re:
> Vertical Lofting with rebuild curves with same number of control points can't not make the trick ?
> (in this particular symmetric piece)

When curves are of different lengths and also changing in shape the difficult thing can be about how the surface is formed by the connection between the curves. Just connecting the same percent distance along one curve to the same percent on the other sometimes isn't good. There can be too much slanting.

When that's the case it can be good to build separate surfaces for the different shapes rather than trying to squeeze it into one single surface.

- Michael