How are you modeling depressed slabs? For example, where you have a 6" slab, and want to show a 2" depression for tile at a bathroom, etc. (I'm not worried about modeling the slope for any drains - I usually just detail line that part).

Modeling a 6" slab with a hole in it, and then modeling a 4" slab separately at that area is a drag because every time it needs adjusting (which is often) twice as much editing is required.

I was thinking there was a way to create a partial void that I could embed just a little bit into the slab (model the slab full thickness and then just 'void' out the depressed area), but everything I'm seeing cuts out the entire thickness of the floor, not just the top two inches.....?