I am working on this model and repeatedly running into this issue with naked edges that I do not fully understand. Here is my overall approach to constructing this:
I’ve attached pictures of linework, surfaces, and the resulting naked edges after joining and the rhino file.
Any help understanding where my approach is going wrong would be greatly appreciated. My work around of repeatedly extending and retrimming surfaces is getting pretty frustrating.
The outer Stem profile seems to be intersecting and crossing through the cylindrical part of the model.
Simply trimming and developing a new surface wouldn’t give up a clean set of “Joined” polysurfaces.
What I have done is take up the Isocurves in the vertical direction and trim a substantial portion from the top to create curves that follow the cylindrical surface👇. Used Blend Curve instead of Fillet.
Your method should work as long as you start using the Surace Edges and Isocurves instead of the original to create surfaces once your primary surface is constructed. Rhino sometimes approximates a kind of loose surface creation. (Somebody correct me if I am wrong)
And I also noticed that you have a very high absolute tolerance.
Sometimes used NetworkSurface when Sweep 2 didn’t work.
Be careful about the curves - here, I’ve taken the arc-like portions of the curves and rebuilt them as degree 5, 8 point curves - 6 points makes a good approximation of an arc up tp 90 degrees but the curves you have include extentions to the arcs, so I added a couple more points in the rebuild. The main thing here is that the curves have the same structure and closely approximate the arcs and extensions.
