A shredder includes a feed screw that pushes the items to be shredded and compacted towards an opening in the shredder via a restrictor that includes a pipe portion leading to the opening in the shredder, the shredder includes a drive motor driving a miller screw which shreds the items to be shredded into acquired size against a cutter plate fastened to a cutter housing to form shredded items, and forces the shredded items into a press chamber.