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Knowledge Base

“Knowledge is a weapon. I intend to be formidably armed.” ― Terry Goodkind

What type of oil should I use for Katana?


When it comes to oiling a katana for maintenance and preservation, it is recommended to use a specialized oil specifically formulated for sword care. The two commonly used oils are:


  1. Choji Oil (Choji Abura): Choji oil is a traditional Japanese oil specifically made for sword maintenance. It is derived from clove oil and has excellent rust-preventive properties. Choji oil forms a protective layer on the blade, helping to prevent moisture and corrosion.
  2. Mineral Oil: Mineral oil is a synthetic oil widely used for sword maintenance. It is colorless, odorless, and has good rust-preventive properties. Mineral oil is readily available and suitable for general maintenance and preservation of the blade.

When applying oil to the blade, follow these general guidelines:

  1. Clean the Blade: Ensure the blade is clean and free from dust or debris before oiling.
  2. Apply Sparingly: Apply a thin layer of oil to the blade using a clean, lint-free cloth or a soft brush. Use a sparing amount of oil, as applying too much can attract dust and create a sticky residue.
  3. Wipe Off Excess: After applying the oil, gently wipe off any excess oil to avoid accumulation.
  4. Regular Maintenance: It is recommended to oil the blade periodically, especially if the katana is displayed or stored for an extended period. The frequency of oiling depends on the environment and climate conditions.


Remember to consult with a professional swordsmith or experienced practitioner who can provide guidance and specific recommendations based on the type of katana you have and its particular care needs.