you have to use the thin wall command (the icon if not mistaken is a cube with an open face) but I did not really understand how you want to empty it....make a couple of attempts.. I also recommend the tutorials. Hi.inventor 2010
a simple profane question, how do I empty, only a part of a solid that is composed of two diameters??
the solid is built with a revolution.
in the image you see the solid to empty, I want to empty only the central part and not the crown.