Katana Cleaner Kit

Katana Cleaner Kit with four essential maintenance tools in a wooden storage box with kanji-inscribed lid. Includes choji oil, uchiko powder ball, brass mekugi punch, and rice paper cloth. 16 × 7 × 5.4 cm, 0.2 kg. Everything needed to maintain a carbon steel blade between displays.

Katana Cleaner Kit Contents

How to Use

Remove the blade from the handle using the brass mekugi punch to push out the bamboo pin. Tap the uchiko powder ball along the blade to absorb old oil and fingerprint residue. Wipe clean with rice paper using gentle strokes from habaki to kissaki. Apply a thin layer of choji oil with a fresh section of rice paper. Reassemble. The full process takes five minutes and should be repeated every few weeks for displayed blades, or after each handling session. The Katana Cleaner Kit covers every step. For detailed instructions, see our maintenance guide.

Why Maintain Your Blade

Carbon steel rusts. Every katana in our catalog using 1060, T10, T8, or Damascus steel requires periodic oiling to prevent corrosion. Fingerprints contain salt and moisture that accelerate oxidation. The Katana Cleaner Kit provides the traditional Japanese method: uchiko to clean, choji to protect, rice paper to apply. Five minutes of maintenance preserves years of blade finish.

Frequently Asked Questions

Do I need this if my katana is just for display?

Yes. Displayed blades collect dust and humidity. Carbon steel corrodes even without handling. Regular oiling every 2-4 weeks prevents rust spots on the blade surface.

What is uchiko powder?

Fine stone powder wrapped in a silk or cotton ball. Tapping it along the blade deposits powder that absorbs old oil, fingerprints, and moisture. Wiped clean with rice paper before re-oiling.

Can I use regular oil instead of choji?

Choji oil (clove oil) is the traditional standard. Unscented mineral oil works as a substitute. Avoid WD-40, vegetable oils, or cooking oils — they attract dust or degrade the steel over time.