The video shows a close-up of a 3D printer as it moves its head back and forth over a piece of wood. The printer head is made of metal and has a nozzle that extrudes a filament of plastic onto the wood. The printer head moves smoothly and precisely, laying down the plastic in a controlled manner. The wood appears to be a light brown color and is placed on a flat surface. The printer head moves over the wood several times, creating a layered effect as it builds up the object.