Problem: solid body is made of different shell bodies, 1 face = 1 body.

When meshing, all edges are free edges.

 

Recommnded Solution FOR PARASOLID GEOMETRY:

- Ensure CAD is Parasolid (translate while importing if needed)

- Go to Geometry/Connect/Boolean and choose option CAD/COMBINE.

This creates 1 solid CAD body out of the many shell bodies. This can be meshed now.