How to Care for a Display Sword
A display sword needs very little care. Wipe off fingerprints soon after handling, keep a thin coat of oil on the blade, and keep the sword somewhere dry with steady humidity. Keep the handle wrap clean and dry, and carry the sword in its scabbard. The steps below cover each of these, based on guidance from sword makers and the Canadian Conservation Institute.
Dust and fingerprints
Bare hands leave salts, oils and moisture on metal, and those can cause visible corrosion. Fingerprint marks are one of the most common problems with metal objects on display. Dust matters too: it holds moisture against the surface and can carry corrosive salts.
- Don't touch the blade. Hold the sword by the handle, with clean hands. If you want to take the blade out often, clean nitrile gloves are a good choice. Cotton gloves also work, but wash them regularly because they soak up sweat and salts.
- Wipe marks off straight away with a soft, dry cloth. Skin oils leave marks, especially on carbon steel.
- Dust with a soft cloth as part of your normal cleaning, working from the back of the blade (the spine) so your hand stays away from the edge.
Light oiling
A thin film of oil keeps moisture off the steel. Many of our sword listings describe stainless steel blades, and some are carbon steel. Stainless resists corrosion better but still benefits from regular care. Carbon steel needs more attention.
- Take off the old oil first. Wipe the blade clean with a soft cloth or paper, from the base towards the tip.
- Apply a thin, even coat. Put a little choji oil or a mineral-based sword oil on a small cloth and spread it along the blade in the same base-to-tip direction.
- Take off the excess. Too much oil attracts dust and can seep into the scabbard.
- Be gentle at the tip. Wipe lightly there with no pressure, and never wipe back and forth along the edge. That is how cloths get cut, and fingers with them.
How often: for a sword that is only displayed and kept somewhere dry, sword makers suggest fresh oil every two to three months. Avoid household products such as WD-40. They are made to push water away, not to protect a blade over the long term.
Scabbard storage and humidity
Steady conditions matter more than anything else you do. Keep swords away from places where temperature and humidity swing, such as attics, basements and spots near heating vents, and out of direct sunlight.
| Guidance | Relative humidity |
|---|---|
| Sword maker's recommendation for katanas | About 40–50% |
| Conservation guidance for stable metals in storage | 35–55% |
| Point where metal corrosion speeds up significantly | Above 65% |
- Keep the sword in its scabbard when you are not looking at it. Sword makers recommend storing it horizontally where you can.
- Take it out now and then. Leaving a sword shut in its scabbard or case for long periods can trap moisture. Every month or so, draw it, check for spots or haze, and re-oil if needed.
- Keep wood away from bare steel. Conservators warn that wood and wood-based products give off acetic and formic acid vapours that attack metals. Keep the blade oiled, and don't leave an unoiled blade resting on bare wood for long periods.
Handle wraps
Our listings describe a range of handle wraps and materials, including cotton, cotton silk, cord, leather-wrapped and ray skin-wrapped handles over hardwood, as well as metal and plastic handles. For wrapped handles, the advice is simple: keep the cord and ray skin clean and dry, and don't use harsh chemicals on them. When you oil the blade, wipe away any excess before it reaches the handle. Clean hands also help, because skin oils and dirt build up on a wrap over time.
Moving or storing a sword safely
- Always carry it sheathed. Move the sword in its scabbard, holding the scabbard and handle together so the blade can't slide out.
- Draw and sheathe with care. On a katana, keep the edge facing up when drawing it from the scabbard. If a blade sticks, don't force it.
- Clean and oil before storage. Never put a dirty or damp blade away. Wipe it and oil it lightly before it goes back in the scabbard.
- Pick a dry, stable spot. Avoid attics, basements and anywhere near heating vents. Store the sword flat where you can, out of children's reach.
- Pad it for travel. Wrap the sheathed sword in a sword bag or soft padding so the guard and fittings can't knock against anything, and put it somewhere it can't fall.
For a stand that keeps your sword steady and off the floor, see our sword stands. For placement ideas, read How to Display a Katana. Your sword's product page in the sword collection lists its blade material, which tells you whether you are looking after stainless or carbon steel.
