Final answer:
Rabbets cut in the back edge of a cabinet frame should be cut slightly deeper than the thickness of the panel to be inserted.
Step-by-step explanation:
In woodworking, a rabbet is a groove or recess cut into the edge of a piece of wood. In the case of a cabinet frame, rabbets are cut in the back edge to allow for the insertion of a panel. The depth of the rabbet should be slightly greater than the thickness of the panel to ensure a secure fit.