How does the yellow blade finish hold up during display?
Updated Feb 2026
The yellow blade finish on the Zenitsu katana replica is a surface treatment applied to 1045 carbon steel after forging and heat treatment. Under normal indoor display conditions - away from direct sunlight, moisture, and abrasive contact - the finish maintains its color and appearance without requiring intervention. Prolonged exposure to direct sunlight can cause colored blade finishes to fade over time; indoor placement away from windows or strong directional lighting is the appropriate precaution. After handling the blade for examination, wipe it with a soft clean cloth to remove oils from contact. Avoid water exposure and chemical cleaning products. The yellow finish is considerably more durable than paint - it will not chip or peel under normal display handling - but should be treated with the same care appropriate for any precision surface finish. The 1045 carbon steel base gives the blade structural integrity regardless of the surface treatment.