Hi Michael,

A lot thanks for comments! I study it and tried made so.

I cut the tube and the egg different curves and blend G2 0,5.



Exprot to STL max mesh and open in Blender


Export to STP and open in PROE


Non-cutting tube and egg in 3dm attached.

What I made wrong?

And very big question about export to PROE, is there any solution this problem, plagin or other???