Steps for correct use of a new electric soldering iron
1. When soldering with an electric soldering iron, connect the electric soldering iron to the power supply.
2. After more than ten seconds, rub it with iron sandpaper several times and immediately put it into the rosin to protect the soldering iron tip from oxidation.
3. For the tip of the soldering iron, apply solder to protect the tip of the soldering iron. so that it does not back oxidation
