[Gmsh] Gmsh fails to create a volume mesh around an STL surface mesh

[Mike B.]

Dear All,

I have a surface mesh saved as and STL file (similar to `sphere-surf.stl' from `demos/sphere-discrete.geo').

I merge the STL file, define a cuboid around it and request a volume mesh (`Mesh 3;'). Gmsh meshes the cuboid faces but fails to mesh the volume, giving multiple error lines such as:
Error: ERROR: Edge 190-191 multiple times in surface mesh

This problem is also mentioned in:
http://article.gmane.org/gmane.comp.cad.gmsh.general/380/match=multiple+edges

This seems to be a problem with mesh algoritm. Any ideas how to solve this?.

Cheers and thanks,

Mike.

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