This cabinet carcass is done. It is about three feet wide. It will have a cutting board pullout, two top drawers, and two big lower drawers. For the top level drawers, he chose to add a reinforced piece between them for extra support instead of just using slide hangers. The face frame is reinforced for the middle drawer, just for some extra support. The handles on the sides are temporary to make the cabinet easy to move.
Face frame lying on the cabinet.
The sink cabinet face frame pieces labelled for their purposes. This cabinet he calls BC3. I do not know what all the other mysterious labels mean.