Neat Coped Joints
In a traditional home, crown moulding is the icing on the cake. When gaps open at joints, however, the effect is ruined. Outside corners of crown molding (as well as chair rails and baseboards) require outside miters. But inside corners are much neater with coped joints, which mate one length of wood to the other. A coped corner fits tightly, even if the walls are out of square—the norm in an old house. The technique requires a little practice but is not hard to master, and you can whack away at the back of the coped piece without it showing.