What is the purpose of a 3D printer's nozzle?

The purpose of a 3D printer's nozzle is to extrude molten material for printing. During the additive manufacturing process, the nozzle serves as the key component through which the thermoplastic filament or resin is heated to a point where it becomes malleable or liquid. This liquid material is then precisely deposited layer by layer onto the print bed or previously printed layers to form the desired object.

The nozzle's design and diameter directly affect the flow rate of the material and the layer quality, influencing factors like layer resolution and print speed. Proper functioning of the nozzle is crucial for the successful execution of a 3D print, as it ensures that the material is delivered consistently and accurately to create the finished product.