Can this be done in MoI

 From:  Barry-H 10 Dec 2015  (4 of 6) 
7767.4 
hi Jim,
this may help.
1) Sweep the cone slope line around profile.
2) Trim with circle that goes thro cone points.
3) Blend edges.

Barry

EDITED: 10 Mar 2023 by BARRY-H