50g of filament to perform the Nylon Cleaning Method for cleaning the hotend. Use this kit to clean your hotend periodically in order to prevent under extrusion issues or when switching materials.
It is recommended to clean the hotend periodically in order to prevent under extrusion issues. On the other hand, this maintenance is vital when switching materials, especially if their printing temperatures differ.
The best way to keep the nozzle clean and extend the whole hotend service life is following the instructions of this BCN3D video.