A sharp knife begins with a healthy whetstone. While whetstones may not require daily care like knives, the way they are stored and maintained determines whether they serve you faithfully for years—or fail with cracks, clogging, and uneven performance.

In this video, we uncover the essential principles of whetstone care. Cracks, the most common risk, often occur from moisture and rapid temperature changes, but can be prevented with mindful drying, careful storage, and protection from sunlight. We also explain which stones should be soaked and which should never be submerged—since vitrified stones benefit from water absorption, while magnesia and resinoid stones can deteriorate if soaked. Finally, we look at how to prevent clogging, ensuring your stone retains its “bite” and continues to sharpen effectively.

By following these simple practices, you not only extend the life of your whetstone but also preserve the sharpness and reliability of every knife you own.