Does the red color treatment on these katana affect the hand-sharpened edge quality or blade perform
Updated Feb 2026
The red color treatment has absolutely no effect on edge quality or blade performance because the two are applied to completely separate parts of the sword. Hand-sharpening is performed on the blade’s cutting edge through progressive stages of increasingly fine abrasive media, affecting the steel’s edge geometry at a microscopic level. Red coloring is applied to the scabbard, handle wrapping, and fittings — components that the blade never contacts during the sharpening process. The blade itself retains its natural steel color and polished finish regardless of the color theme applied to the surrounding components. A red-themed katana and a black-themed katana with identical blade steel, forging, heat treatment, and sharpening will have identical edge quality and cutting performance. The only way color could theoretically affect a blade is if someone applied a coating directly to the cutting edge, which is not a practice used in any of our collections. The color lives on the furniture of the sword, the performance lives in the steel.