How can you make a loft where the surface fits the chosen curves exactly?

[annamlis99]

Hi, I’m trying to model a shoe last shape. I first tried to loft the sole from the three curves (see file), but the loft doesn’t reach the edges of the outer curves. This means that when I make the upper surface there is a very small gap which interferes with my modelling at a later stage. Do you know how to prevent this or any other method? Any help would be appreciated
problem 1.3dm (1.5 MB)

[John_Brock]

You are confusing the edges of a faceted render mesh needed for the Shaded display, with the true edge of the surface.
The black surface edge is the surface edge. The shaded bit is not.

Have a look at this:
https://www.hydraulicdesign.net/meshes.htm

[annamlis99]

thanks!