[Gmsh] Connecting structured and unstructured mesh

[Jasper]

Hi,

I'm trying to build a mesh with a structured geometry in an unstructured
air sphere. For a cube this appears to work. For a wedge I get "Edge x - y
multiple times in surface mesh" errors.
Can anybody have a look to see what I'm doing wrong? I've played around
with the normal orientation of the surfaces, since I found on the mailing
list that this can cause the error. But this does not appear to help.
I've attached the files.

Best regards,

Jasper
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