How should I oil and maintain a hand-forged wakizashi blade?

 Updated Mar 2026

Maintaining a hand-forged steel blade is straightforward once you establish a routine. Start by removing any old oil using a soft cloth lightly dampened with uchiko powder or a clean cotton patch - never abrasive materials. Apply two to three drops of choji oil (a traditional mineral oil used specifically for Japanese sword care) onto a fresh cloth and wipe the blade in smooth, overlapping strokes from the habaki toward the tip, following the direction of the grain. Avoid touching the blade surface with bare fingers during handling, as skin oils accelerate surface oxidation. Repeat this process every two to three months under normal indoor conditions, or monthly if you live in a coastal or high-humidity environment. Store the blade outside its saya during extended periods of non-display to allow airflow.

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