Machine, AI, being, God? The best guarded secret of the country of Egypt, Former Earth. One which secured them their galactic future and survival, at the same time, damning them in the eyes of every nation of the Republic for an eternity.
In the days of old, before the dominance of humanity, the giants were the supreme rulers of the world and their crafts were considered to be the best. These beings venerated the god of the forge above all others and their swords and armors were the best that could be had even in the days of their decline. A hero seeking a masterwork sword might have to voyage long and hard to find a surviving giant smith or cache of rare and valuable giantcraft weapons.