Hi,
First of all: next time try to internalize the referenced data from Rhino
Now, I had a similar problem in this thread:
and the ‘dark lord’ made a C script that unifies the normals of a brep’s faces which solves the problem at its roots.
It is the component with the Sherlock Holmes icon.
The only problem is that it works per solid, so the surfaces are continuous for each floor but not between them…
