I am in the midst of learning here. In the attached file I have two surfaces that share a common frame and I where I have put a lot of effort into making the intersection fair.
If I do a MergeSrf on them I get an indentation. I was curious why this is.
Problem45.3dm (3.1 MB)
The reason they are created as two separate segments is that the one to the right has all straight lines at the top and the the one at the right has a straight line (matching frame) that shifts to curbes.