I have been trying to model this snake ring for a week with the sweep 1 command but I continue to get a weird twisting/pinching on the bottom of the head rather than being flat like in the rest of the body. I attached the model (as well as the rail and cross sections next to it) so that you can take a look. I feel like it should be an easy fix but I can’t figure it out. Has anyone dealt with this before?
trial - Copy.3dm (481.4 KB)