HI,
I have 2 closed brep which i remove the bottom face to one of them and the top face to the other, then I want to add a surface between them to create ONE close brep.
How can I do it? see image please
COMPARATION.gh (614.1 KB)
thanks in advace
HI,
I have 2 closed brep which i remove the bottom face to one of them and the top face to the other, then I want to add a surface between them to create ONE close brep.
How can I do it? see image please
COMPARATION.gh (614.1 KB)
thanks in advace

Looks like this GH file needs geometry from a Rhino file?
There are two solutions : either Solid Union your two closed Breps, or Brep Join your faces after culling.
I also added a Sort List to cull your top and bottom faces without having to search for their index, you might find this useful if you do that process frequently.
COMPARATION.gh (615.1 KB)
i know that it is massive and innefficient but every time i try to find shorter ways to get the same but it is ot easy. apologise. you are in the right area
The output result would not be a closed Brep. It’s not possible to join these three elements, unless you add thickness to your walls/floors.
the problem is caused for the hole where i want to model the stairs that make breps to be defined as an open brep . althought i join the breps, it does not merge or considered as one unique element