Soldering is an essential skill in building and repairing a quadcopter, RC plane and mini quad (commonly known as racing drones). Soldering is basically joining multiple conductive metal parts together by melting and flowing solder between the joints.
Are you having trouble soldering? Check your solder first! Lead solder makes soldering a lot easier, and it’s possible your issue is due to having lead-free solder (or mislabelled/fake lead solder).