I thought i share some of my thoughts about fingerstones.
I got some very nice Ohira Uchigomori sword polishing quality !
Finger stones is bit difficult to choose because they are used for final finish on your knife or sword so they have to be of very best quality to not to destroy your finish after all that hard polishing !!
Here is 2 examples of bad and good Uchigomori
At the looks you cant see much differens but after use the bad one is very soft and fragile it will ruin your finish.
Uchigomori is a layer in Tenjyou strata so it is not name of the stone but just a layer, this layer is very good for fingerstones because it is soft and dose not have to much cutting power to ruin the finish so it is safest stone to use for fingerstones ! But very difficult to get a good one
First stone on top is very fine and sword polishing grade Uchigomori, one below is very bad uchigomori !
Nakayma Fingerstones the best fingerstones i have tried so fare milky mirro finish and very smooth polish
This one is more for advance users very hard to make slurry but very stable and fast cutting stone it is not Uchigomori but harder Maruka Nakayama.
Ozuku super hard VERY difficult to use will scratch soft steel if not used correct but will leve super mirro polish, i use it very rare because its very easy to ruin your finish.
Ready to use fingerstones