#17 Mikawa Shiro Tenjyou Nagura

An excellent example of tenjyou nagura from the Mikawa mine with a fully developed kawa skin. The stone is set up like as a hone but sadly is missing material on the topside towards one end. There are various sized holes here and there but for general razor and especially knife work they present no great issue.
Essentially a very pure stone from side to side and front to back.

Well below the pay grade because of the low riding lower corner. Tons of good grit ready to be used.

This shiro white nagura makes an excellent middle stone, inserted between a bevel set and the final finishing stones, or it can serve as a giant nagura rubbing stone. It will remove metal from the hardest razors leaving a more polished surface.

I found that these base stone nagura are easier to use if you soak them for 1 to 2 minutes so the hydration becomes consistent. Splashing clear water as you go along will keep them cutting.

Becoming very scarce in this size, I do not know how long I can continue to source them from my nagura miner who keeps telling me that these will be the last he will every see. He is old so I believe him.
These and all of my other bench size Mikawa nagura do not have Asano ink
stamps or any other attributions because I circumvented the stones before
Sakamoto-san the owner of the Asano stamps had a chance to make his a bid.

The stone (toishi) has been lapped perfectly flat and the corners and edges beveled unless otherwise noted.  All of my stones come with a money back guarantee minus the return shipping.
 
Hardness                           6+
Particle Size                       9
Speed/Cutting                   9+