A large single-bevel cutting tool used for splitting kindling, rough-shaping timber, and clearing brush. The Nata occupies the boundary between knife and hatchet — wide enough to split but sharp enough to craft. Timber-frame carpenters use it for rough-shaping large tenons and cleaning up green timber. Regional variants include the Eda-uchi Nata (branch-cutting), Kawa-hagi Nata (bark-removing), and Kirizuki Nata (piercing).