As this is a somewhat hard whetstone, it is easier to use if you create a slurry on the surface before sharpening.
Dimensions: 101 x 208 x 11 mm
Weight: 415 g
Quarry location: Kyoto Prefecture
* Image 8 shows the stone after water has been applied.
* Image 9 shows the amount of slurry produced after rubbing the surface 20 times.
* Image 10 shows the finish achieved by sharpening without creating a slurry beforehand.