bales of wood pulp built from successive wafers of bulk dried pulp may be shredded to small , easily mulched particles by raking a bale face with spaced claws along a plane parallel with the wafer interface . claws are secured to a power reciprocated bar in pairs with claw points directed along opposite reciprocation directions . the bale is advanced against the traverse plane of the claws in increments coordinated with full reciprocation strokes of the claw bar .