My senior design group is working on changing the shape of the stator blades in a diffuser, and we are trying to create the blades from a stack of airfoil sketches, which I rendered with 3d-sketches. There is quite a bit of curvature, and the "Loft" command is throwing up a few errors. I have gotten "Zero thickness geometry", and "self-intersecting geometry" errors which I can get rid of by moving the green dots. But even when the preview shows (and looks correct), I get a "Loft operation failed to complete error". We have spent a while trying different ideas from this forum, but nothing seems to get past the final "failed to complete error". Any help would be appreciated.