The word ‘solder’ as used in the process soldering comes from the Latin solidare, means ‘to make solid’. Over the years, the word has found its way in Old French as ‘solduree’ and then in Middle English term ‘soudur’. Soldering is a process in which two or more elements (mostly metals) are joined together by melting and inserting a solder in between. Historically, in ancient civilisations, soldering was used to make jewelry, cooking ware, work tools and in making swords.