[Gmsh] reminder ..

[Nacho Andres]

Dear all ..  dear Cristophe,
sometime ago I sent an e-mail asking for help for a problem that I am
trying to solve.
I basically need to build an sphere with many volume holes starting on
its surface and continuing a little deeper .. 
Defining the sphere and then substracting the volumes gives coplanarity
problems when meshing ...
Another possibility is first declaring the outer surface with the gaps
and then start declaring the volume step by step .. but .. if I generate
the external sphere in quadrants, some of the meridians intersect the
holes .. so I also get problems ..
Do you have any suggestion? Any hint is most welcome! otherwise, my only
alternative seems brute force (i.e., generating pieces and tailor
everything ..

Please, this is really a bottleneck .. Many thanks in advance,
Nacho