this Curve → Brep
Is it possible?
Assuming the control points of the two curves are lined up to match the same features, then Loft should make the joining surfaces then you can use FilletEdge on the front edge to round it over. I’m guessing you’ll need to manually blend the sharp Vs between the lobes as the rounded edge appears to be a much larger radius that will fit in the Vs.
Please sample 3dm
How much Rhino do you know? What have you tried?
I have been using it seven year ago
I’m sorry I’m not good at speaking English, so would you please talk to me in simple English?
Another approach would be to model them flat, and use Bend or Flow to curve them.