If the knife is being made under the Sakai, Osaka production system, the knife is sent to a sharpener who corrects for distortion and sharpens simultaneously to make the final geometry and profile of the knife, and then is finished by polishing, engraving, and installation of handle by other craftsmen.
In the context of a knife made using the Sakai, Osaka production system, the process involves refinement by a sharpener who corrects any imperfections and polishes the blade simultaneously. The resulting knife is then further crafted by skilled artisans through engraving and handle installation.