Separate a 3d solid meshing size ( outside/inside)

Hi HamzaIbrahmi,

May i know the purpose of doing so?

Thank you

Hi, 

 

Please how can i mesh a 3d solid with 2 sizes of meshing 

size=4 for the outside skin (2d elements), and size=3 inside the solid ( 3d elements).

 

Thank you 

In this case, how you can connect skin to solid?

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