Using olive oil on a katana is generally not recommended. While olive oil is commonly used for various purposes, including lubrication and conditioning, it is not suitable for preserving or maintaining the blade of a katana. Here's why:
- Potential for Residue: Olive oil can leave a residue on the blade, which can attract dust, dirt, and moisture. This residue may be challenging to clean and could potentially harm the blade's condition.
- Risk of Spoilage: Olive oil is susceptible to spoiling over time, which can result in an unpleasant smell and the formation of sticky or rancid residues. This can be detrimental to the blade's surface and overall preservation.
- Lack of Adequate Protection: While oiling the blade is essential for long-term preservation, specifically using oils formulated for sword maintenance, such as choji oil or mineral oil, is recommended. These oils provide better protection against moisture and corrosion and are specifically designed for use on sword blades.
If you wish to maintain your katana's blade, it is advisable to consult a professional swordsmith or experienced practitioner who can guide you on the appropriate maintenance practices. They can provide suitable oils or recommend techniques for preserving the blade's condition and ensuring its longevity.
