Scott Baldwin wrote:
I have tried using both a revolved solid and a swept solid, both of which create a torus with a constant diameter.
I need to make a torus with a large diameter at one end and a small diameter at the other.
I don't think a lofted surface works because it will not follow the centerline of the torus
It will if you tell it to. Use the 'Centerline' parameter in the swept loft property manager:
Thank-you that's what I was looking for