What is hot end?

A hot end is a component of a 3D printer that melts and extrudes the plastic filament. It is typically made up of three parts: the heater block, the nozzle, and the thermistor. The heater block houses the heating element which melts the filament, while the nozzle releases the melted filament onto the printing surface. The thermistor is a temperature sensor that provides feedback to the printer's control unit, allowing it to maintain a consistent temperature for optimal printing results. Different types of hot ends are available to accommodate different filament types and printing needs, ranging from standard to high-performance options. Proper maintenance of the hot end is essential for optimal printing results, as buildup of filament residue can cause clogs and other issues.