Maple, walnut, funnel, embroidery hoop, balloon, masking tape, laundry line, plastic tubing, needlenose pliers, ink, paper.
Each machine has a specific purpose, though a different means of execution: To cause ink to pass through a stack of paper. The ink marks the machine as it works and leaves a trail by which the action can be deduced after the fact. The structures are pared down to the very minimum required to remain upright. The width and placement of the embedded walnut corresponds to the height and placement of the stack of paper when it was in the machine.