Unsheathing Your Katana
A katana comes inside a tightly fitted sheath, which protects both the blade and the sword bearer. Never unsheathe the blade by pulling the handle of the blade and the scabbard simultaneously apart. This could result in personal injury, and doing so repeatedly will eventually wear away your scabbard.
To unsheathe the blade, firmly grip the scabbard in your left hand and the hilt in your right hand. Make sure that the blade side is facing upward and then slowly push the guard away from the scabbard. This movement reduces the amount of friction and will allow you to slide your blade from the scabbard without slicing the blade edge along the scabbard.
Katana Storage Tips
When storing your katana inside the sheath, always store it blade side up to keep the blade from sinking into the sheath, which will eventually wear away the snug fit. In the event that the sheath becomes loose, have it refitted by a professional to avoid an accident.
If your katana is in an open display case, always keep the blade facing away from the front of the case. Never display it in a blade-up position.
Katana Cleaning Tips
Do not use abrasive cleaners, as these will scratch the blade. Avoid harsh chemicals as well, which could damage the scabbard. Check online or in your local weapons shop for a sword maintenance kit. These kits come with everything you need to clean and oil your sword.
Maintain the finish of your blade every three months. To do this, fold a sheet of rice paper over the blade, edge facing outward, and wipe along the length to remove any leftover oil from previous maintenance. Apply finishing powder along the blade, tapping it out every two inches. Use a clean cotton cloth and rub the powder across the blade's surface until it is smooth and polished. Add a couple drops of sword oil to both sides of your katana and smooth it evenly across the surface with a fresh piece of rice paper.
Most katana scabbards have a shiny lacquer finish. Polish the scabbard with a dry, soft cloth. There is no need to use any chemicals or cleaning solution on the scabbard.
If you use your katana sword, clean it after every use to keep the blade in good condition. Never try to sharpen the blade, as this could cause irreparable damage. If the blade is dulled, take it to a professional and ask for assistance.