A Must-Have for Water Stone Maintenance
Maintaining water stones is essential for achieving precise sharpening results, and a high-quality flattening stone ensures they remain level and sharpen effectively. Our 10" x 6" Flattening Stone provides a work surface with deep grooves for efficient debris removal, and is available in two grits: 120 for fast leveling, and 320 for smooth stone maintenance.
Choose 120 Grit or 320 Grit Silicon Carbide
Our flattening stone is made with Silicon Carbide, a fast cutting abrasive, capable of flattening any water stone. It is available in two distinct grits to meet all your flattening needs:
- 120 grit: Fast leveling of an out-of-flat water stone, quickly restoring their flat surface for optimal sharpening.
- 320 grit: Removing light wear and leaves a smooth finish on fine water stones.
We recommend the 120 grit if you go with only one. Or you can buy both at once and save versus the individual pricing.
Deep Grooves for Efficient Water Stone Flattening
The deep diagonal grooves on both sides of the flattening stone provide important channels to keep waste material flowing. Deep grooves prevent the waste material from building up and clogging the stone, allowing for greater flattening efficiency.
Extra-Large Flattening Surface
The 10" x 6" size of Double-Sided Flattening Stone offers a huge working area of 60 square inches. With a surface this large you can flatten any water stone with ease without running out of room.
Use Flattening Stone With Water
To get the best results, always use plenty of water when flattening with the Flattening Stone. Soak the flattening stone for several minutes before use, and continue to add water as necessary during use to keep the waste material flowing away from the flattening surface.
Proudly Made in the USA
This USA-made flattening stone is crafted with high-quality abrasives for durability and long-lasting performance. Designed for serious sharpeners, it ensures your water stones stay in top condition for the best sharpening results.
Sharpening Supplies 10" x 6" Flattening Stones
- 10" x 6" x 3/4"
- Coarse 120 Grit or Fine 320 Grit
- Deep Grooves for Efficient Material Removal
- Works With All Water Stones
- Made in the USA

