Soldering iron
Soldering station
Wave soldering machine
Temperature controlled soldering iron
Fire
Heat
Cool air
Water vapour
Form the oxide layer
Reduce the solder cooling time
Increase the melting temperature of solder
Dissolve the oxide layer on the metal surface
16 gauge rosin cored
18 gauge rosin cored
22 gauge rosin cored
24 gauge rosin cored
Water
Petrol
Organic flux
Isopropyl alcohol