Apparatuses, applicable to new or existing large envelope, 3-axes Cartesian machinery for additive manufacturing, based on Fused Deposition of thermoplastic material deposited in subsequent layers one on top of another, wherein the output nozzle dispensing the molten printing material can be oriented in space by adding 2 independent polar axes interposed between the extruder screw output and the dispensing nozzle are described. The adjustment of these polar axes may be manually set and locked in a desired position or motorized and controlled by machine CNC thus allowing a full 5-axes material deposition. Such is particularly useful in critical zones of large envelope parts where the polar orientability of the nozzle allows improved lay-up strategy results in better dimensional and structural lay-up quality.