What is the origin of the idiom "go hammer and tongs" and when to use it?

The idiom "go hammer and tongs" originated from the literal image of blacksmiths vigorously wielding hammers and tongs to shape and forge metal. Figuratively, it signifies a situation or conflict where individuals or groups are engaged in a fierce, intense, and often heated confrontation or competition. In other words, the phrase is mostly used to convey the idea of an aggressive and relentless pursuit or attack, where all parties involved are fully committed and determined to achieve their objectives.