Soldering is basically welding at a smaller scale and is used when making circuit boards, for example. You will need access to an electrical outlet, but mains-powered tools have a
From Amazon
Ersa Soldering Iron Multitip C 25 25W 230V 0920BD
Conrad Electronic
Ersa MULTITIP Soldering iron 230 V 25 W Pencil-shaped +450 °C (max)