A baler (10) is disclosed. The baler (10) comprising :a frame (14)； a feed system (22) coupled to the frame (14)； a baling chamber (70) defining an axis (96) therethrough； a crank arm (116, 16a, 116b)； a plunger (74) being at least partially positioned within and movable with respect to the baling chamber (70), the plunger (74) having a compression surface (128) and defining a compression plane (152) fixed with respect to the compression surface (128), wherein the compression plane (152) defines a compression angle (156) with respect to the axis (96) of the baling chamber (70)； and wherein the compression angle (156) is adjustable independently of the rotation of the crank arm (116, 116a, 116b).
