The Dragon King's Giant Greatsword

While Eisen's whistling could be heard even outside the Workshop's door, the old man just continued to work like always. A good while later, the old man finished the edge of the item and did the good-old paper-test. After holding the blade so that one of the edges was faced upward, Eisen simply dropped a piece of paper onto it edge-first. And before he knew it, the paper was split into two without losing speed in any way, as if the two halves were never togther in the first place.

Happy that the blade had the sharpness that Eisen wanted it to have, the old man then stood up and placed the giant, slightly more than two meters long chunk of metal down onto a table that he made with his element, and then grabbed all the other items that he needed to finish this up now.