Hi Anis,

> I am not sure we can use those features. Because of :

You just use Revolve or Rail revolve as the starting point, you then turn on surface control points and modify them to refine the shape and put some bulges or whatever where you need them.

I believe the lyes tutorial linked to earlier covers that - in that case he started with a sphere but instead of starting with a sphere you can start with your own surface of revolution created from Revolve or Rail revolve.

- Michael