wiki-Correction whetstone

• Definition: A specialized whetstone used to restore and flatten the surface of sharpening stones that have become worn or concave.
• Details: Over time, standard whetstones wear down unevenly, leading to concave surfaces that result in inconsistent sharpening. A correction whetstone is rubbed against these surfaces to level them, ensuring a flat and effective sharpening base.
  
• Comparison: Unlike sharpening whetstones, which directly hone knife edges, correction whetstones do not sharpen knives themselves. Instead, they maintain the condition of other whetstones, prolonging their lifespan and improving their performance.
  
• Practical Use: To use, soak the correction whetstone in water and rub it against the uneven whetstone surface until flat. Regular use ensures consistent sharpening results and is highly recommended for both beginners and professionals who rely on whetstones.
  

Related websites
Whetstone Types