I’m trying to model a shoe last in Rhino, for which I follow this example in which a 2 rails sweep is used to create the last surface: https://multimedia.nscad.ns.ca/pdfs/rhino_shoe.pdf
As can be seen on page 18, this gives a nice and smooth surface:
However, if I try to replicate those results, my surface appears to have a ‘crease’ at the front of the shoe last:
I tried many things but none of them seem to work. After hours of searching I decided to ask the experts. So does anyone know what causes this crease and how I get rid of it?
I’m planning on replicating those results in Grasshopper, however since both give the same result I figured it was best to fix the Rhino model first.
Thanks a lot for your help, I really appreciate it.
shoe_last_from_curves.3dm (1.3 MB)