Mizukihara Uchigumori Renge Koppa Japanese Natural Toishi Whetstone

Approximate Dimensions/Weight:
140-165 mm (5.5-6.5") long × 100 mm (3.9") wide × 30 mm (1.2") tall / 910 grams
This is a stunning and flawless piece of Uchigumori which straddles the line between Hato and Jito. It is a very firm and fine piece of Uchigumori which is great for razors, tools and knives. The stone is filled with Renge which dramatically contrasts the light blue base making this a stunning visual piece. Honing on water only is absolutely sublime with lightly granular feel and fast speed. It finishes very fine and clean for Uchigumori. Diamond plate slurry speeds up scratch removal and leaves a nearly finished edge. Using a fine Tomo Nagura following diamond plate slurry can get you a finished, shaving edge but care must be taken to keep the slurry thin and hydrated and the slurry must be worked long enough to fully break down and increase shaving comfortability. For knives, the stone cuts very fast and the firm base is evident. The resulting polish a beautifully reflective yet hazy Kasumi finish with dynamite contrast. Collector grade quality piece in affordable koppa shape.

A photo of the stone's polishing ability on a high quality Japanese kitchen knife is shown.