The creation of a joint between either the faces of sheet metal components or between wires and terminals using molten solder with a flux. 

Manual ironing with steam and dry irons.

The forming of shapes, possibly incorporating irregular and variable cross-section, by the application of localised heat which allows relatively easy transformation by mechanically- or physically-applied effort.

The corrosion resistance of iron and steel can be improved by treatment with sulfuric and phosphoric acids. Other metals are also affected through the introduction of chemicals.