Hi to everyone, I need to select i

[Jeb_46]

Hi to everyone,
I need to select internal surface of channels of a body valve manifod (3d solid) in order to assign the internal pressure.
I can not select them by hand because the geometry is complex.
there is a fast way to select these surfaces ? (for example: to generate a skin of 3D solid).

thank's to all

 

[Erik Panos Kostson]

The select from interior entity tool could be good for this, see Link

Select faces by angle might be good also here.

For a more complete list of selection procedures ,see Link