The Hot Air Desoldering Rework SMD Solder Station is used for cleaning soldering iron with cleaning sponge. After welding, iron oxide and iron carbide welding damages it, heat conduction will decrease. Its thermal conductivity function will reduce and will generate oxide when the temperature is high, so you would have to keep the temperature low. You will have to clean solder iron after using it in order to prevent oxidation. It is very important soldering and wiring tool used by technicians. It is also not so expensive as well.