How does the red blade finish work on the Sandai Kitetsu replica?
Updated Feb 2026
The red blade finish on the Sandai Kitetsu replica is a surface treatment applied to the 1045 carbon steel blade after forging, heat treatment, and initial grinding. The treatment produces a deep red coloration across the blade surface while preserving the underlying steel's structural properties. This is similar to the surface treatment process used on other colored blade collectibles in the catalog: the steel is forged and processed as normal, and the color is applied as a final step. The red finish is consistent across the blade surface and designed to maintain its appearance under normal display conditions - indoor display away from prolonged moisture contact and direct abrasion. As with any colored blade finish, avoid contact with water or harsh cleaning materials, and handle the blade with soft cloths rather than abrasive surfaces when cleaning or examining it. The color finish does not affect the structural integrity of the underlying steel, and the full-tang construction remains the primary quality indicator for the blade's durability as a display collectible.