System and method for operating a multi-nozzle extruder during additive manufacturing

An apparatus comprising:

• a platform configured to support an object during manufacturing;
• an extruder having a plurality of nozzles and a plurality of valves, the valves being configured to open and close the nozzles independently of one another;
• at least one actuator operatively connected to the extruder, the at least one actuator being configured to move the extruder in an XY plane parallel with the platform and to rotate the extruder about an axis perpendicular to the XY plane up to a predetermined angle;
• and
• a controller operatively connected to the extruder and the at least one actuator, the controller being configured to:
• operate the at least one actuator to move the extruder in the XY plane and to rotate the extruder while the extruder is being moved in the XY plane.