On a cabinetry job in Grand Rapids, Michigan, the cabinet maker spent more time measuring walls than looking at the cabinet drawings. That was not hesitation. That was experience.
Walls are rarely square. Floors are rarely level. Ceilings almost never match the plan. Cabinetry fails when it is built for perfect rooms that do not exist.
Good cabinet makers build tolerance into their work. Filler panels. Adjustable hinges. Scribe strips. These are not flaws. They are insurance.
Homeowners often judge cabinets by doors and finishes. Trades judge them by how well they forgive bad geometry.
The difference between cabinets that look custom and cabinets that look forced is respect for reality.