modeling discussion

 From:  BurrMan
5098.8 In reply to 5098.7 
Hi Frenchy,
If you use a cylinder to do the boolean cut that is depicted with the cone, then that lower edge is a conic created that can be exactly duplicated with the conic tool. But the other edges are not constructed properly by the intersection of the cylinders in the other planes..

If you cut the surface with a cone, then there is no conic there.

Is this what you meant?