Generally "face" must be perpendicular to the line start
So rotate it, Select the path, then click the surface
Of course depending of the form of the path and the profil of the surface intersections can be produced
Here the path is also built with some segments of lines, you must weld them with a plugin before Weld.rbby R Wilson
Crossings is of course source of problem
If you want skin you can use this
Skin22by D Belvin
[image: BYTD_exp.jpg]