Volume Extract Tool Options

Merge created volume Merges the created volume into the outer shell to effectively fill the inner cavity. This option is useful if the outer volume is of main interest.
Imprint capping edges Leaves the capping faces intact so that the location of the inlets and outlets can be seen.
Create share topology Creates share topology between the volume extracted and the input bodies.
Preview inside faces Enables you to preview the selection of inner faces and detect leaks. Click the Play button to preview the faces in an animation, or use the slider to manually preview the faces.