I'm trying to mesh a 3D 2-material construct created in another program (FreeCAD) and brought into Gmsh by way of a BREP file. After some troubleshooting downstream, I determined that Gmsh is turning the two volumes into two disjoint meshes despite their extensive shared surface.
Poking around, I suspect the reason for this is that the two volumes share no elementary geometry. Instead, the shared lines and surfaces are duplicated. If the original geometry had been defined in a Geo script this would seem straightforward to fix manually, but it seems a bit more complicated here, especially as this is bound to come up again with more complex geometry later. Is deleting the redundant geometry and rebuilding other effected parts manually the best option, or is there a better way? Thank you, Bram Sterling
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