The building, and what it does to the job
The kitchen is generally a rear extension or a knocked-through pair of rooms, so part of the perimeter is old wall and part of it is new. A range stays where it is and the flanking pieces are eased in around it, since moving it is rarely part of the day. A dry-lined wall hides a void, and the void gets bridged.
Boxing is rarely the same depth at worktop height as it is at floor level, so measuring it low down is the usual reason a top will not sit back. None of it is left for the fitter to grind out on site, since a polished edge cannot be put back once it has gone. The piece is nested around the scribe, not despite it.
