Embodiments for 3D printing an object by a processor are described. During a 3D printing process to form a 3D printed object, an at least partially completed 3D printed object formed by the 3D printing process is scanned. An error on the at least partially completed 3D printed object is detected based on the scanning of the at least partially completed 3D printed object. The error on the at least partially completed 3D printed object is corrected. The correcting of the error includes causing at least some material from the partially completed 3D printed object to be removed.