Additive Manufacturing Apparatus for Extrusion-Based Production of a Shaped Body

An additive manufacturing apparatus for extrusion-based production of a shaped article starting from a build material present in the form of a granulate and/or a powder, comprising:

• a plasticizing means in which the powder and/or granulate-form build material is plasticizable/plasticized;
• a printing nozzle provided with an exit opening via which the plasticized build material is selectively depositable/deposited domain-dependently in a build plane to form the shaped article;
• and
• a first connecting channel via which the build material is at least temporarily conductible/conducted from an outlet of the plasticizing means to the exit opening of the printing nozzle, and a further connecting channel via which build material is at least temporarily conductible/conducted to a receiving region which does not correspond to the exit opening of the printing nozzle.