The video shows a close-up of a 3D printer in action. The printer's nozzle moves back and forth as it lays down layers of black plastic to create a specific shape. The object being printed appears to be a series of interconnected ridges or grooves. The printer operates smoothly and precisely, with the nozzle moving with precision to ensure that the object is printed accurately. The video provides a detailed look at the printing process, showcasing the intricate design and the smooth operation of the 3D printer.