Welding skills and methods of electric soldering iron

The skills and methods of welding with electric soldering iron include:

Preparation tools: soldering iron, solder wire, rosin and so on.

The newly bought electric soldering iron needs to scrape off the oxide layer with a knife and then heat it with electricity. The welding head is plated with a layer of tin, and rosin is added to the welding wire. Put the welding head and solder on the component to be welded at the same time. After welding, if you need to continue to use the soldering iron, you can put more solder on the welding head.