Self sewing shells

Hi,

I am trying to create a loop (a bit like a thin ring) from a BSpline Surface where two of the edges are co-incident.

Is there a way to create either:
- a surface that is infinite in one direction (i.e. around the ring)
- or a shell where the edges have been sewn together?

See the uploaded image for what I am talking about.

Thanks,
Fraser

Mikhail Sazonov's picture

>- a surface that is infinite in one direction (i.e. around the ring)

Not understood.

>- or a shell where the edges have been sewn together?

Again not clear. A shell is created from several faces, when you have several surfaces. In your case you have the single surface, yes? Then you should create a single face. And yes, a face can have two edges sewn, like in a lateral wall in a cylinder.