HOW TO SOLDER:
1) Clear any dirt, rust or paint on the part you wish to solder.
2) Heat the part with the soldering iron.
3) Apply rosin-based solder to the part and melt it with the soldering iron.
Note: when using non-rosin-based solder, be sure to apply a soldering paste to the part before applying the solder.
4) Wait for the solder to cooling and hardened before moving the soldered part.