Sharpening: While hand-forged katanas retain their sharpness for a long time, regular maintenance of the edge is necessary for optimal performance, especially if the sword is used in martial arts or ...

The inimitable [Joe Scotto] has happened upon the katana layout, which has an inverse left-hand row stagger that lends symmetry to the design, and Scotto-ized it into a 33-key build that he says ...