The Masters are all long dead, and yet they remain the supreme exponents of their craft - the standard by which all others are judged. For centuries their reputations have endured, through the work they created and in the teachings and wisdom they left behind. Even in this machine age, their skill cannot be surpassed. Technology is no match for the divinely-inspired craftsmanship of master samurai swordsmith Masamune, or the innovative designs of James of St George, the French master castle-builder. In an original series on The History Channel, we profile the lives of six master craftsmen and the attempts of modern-day craftsmen to replicate their techniques. Here we look at the lives and work of those craftsmen, from the master shipwright, Sir Thomas Slade to the expert armourer, Konrad Seusenhofer.