Do you know, that… ?

Feature Intersection It is designed to allow surface-modeling bryłowo (hybrid) without moving body to the surface, or vice versa.

But it can also be used to remove the unnecessary portion of the geometry. But you must remember, context that such an operation requires disjoint blocks.

Example.

The projecting portions of the thread are removed while the thread connection to the neck.

Just choose Intersection, further Create two and indicate in box Regions exclusion unnecessary objects.