Chapter 1 “There!” Jared says as he lets go of the extruder feeder switch. He looks closer. “What the?” The filament rests inside the feeder but isn’t moving further into the 3D printer filament tubing to reach the extruder itself. “Why isn’t this working?!” Jared thinks to himself. After going over the instructions and searching online for various walk throughs, he sighs in defeat. “I need a drink…”