Topic: Wakizashi for Iaido: Choosing the Right Short Sword for Practice
Blade Geometry and the Mechanics of a Shorter Cut The curvature, or sori, of a wakizashi is typically shallower than that of a katana, often around 1.0 to 1.5 centimeters, compared to 2.0 to 2.5 centimeters for collector swords a katana.