An additive manufacturing device to obtain a three-dimensional object, said device comprising: - a printer extruder configured to print a filament, - a guide unit configured to translate said extruder along one or more reference axes (150, 250), - a support which defines a support plane for said three-dimensional object, said support being rotatable around a rotation axis substantially orthogonal to said support plane; wherein said guide unit is further configured to rotate said extruder around one or more rotation axes (350, 450), characterized in that said guide unit comprises rotation means configured to rotate said extruder around at least a first rotation axis substantially orthogonal to a reference plane (x-y) defined by two axes (x, y), each parallel to one of said translation axes (150, 250), said rotation means also being configured to rotate said extruder around a second rotation axis substantially orthogonal to said first rotation axis, wherein said rotation means comprise: - a first support element integral with a group of second guides; - a second support element rotatably connected to said first support element through first connection means which define said first rotation axis, said extruder being operatively connected to said second support element; - an electric motor operatively connected to said second support element so that a rotation of said electric motor determines a corresponding rotation of said second support around said first rotation axis, further wherein said rotation means comprise second connection means which rotatably connect a connection portion of said extruder to said second support element, thus defining said second rotation axis, said rotation means comprising a further electric motor operatively connected to said connection portion of said extruder, so that a rotation of said further electric motor determines a corresponding rotation of said extruder around said second rotation axis. - a printer extruder configured to print a filament, - a guide unit configured to translate said extruder along one or more reference axes (150, 250), - a support which defines a support plane for said three-dimensional object, said support being rotatable around a rotation axis substantially orthogonal to said support plane; wherein said guide unit is further configured to rotate said extruder around one or more rotation axes (350, 450), characterized in that said guide unit comprises rotation means configured to rotate said extruder around at least a first rotation axis substantially orthogonal to a reference plane (x-y) defined by two axes (x, y), each parallel to one of said translation axes (150, 250), said rotation means also being configured to rotate said extruder around a second rotation axis substantially orthogonal to said first rotation axis, - a first support element integral with a group of second guides; - a second support element rotatably connected to said first support element through first connection means which define said first rotation axis, said extruder being operatively connected to said second support element; - an electric motor operatively connected to said second support element so that a rotation of said electric motor determines a corresponding rotation of said second support around said first rotation axis,