Shapton Ha-no-kuromaku polishing stone #12000 very fine
Shapton Ha-No-Kuromaku professional polishing stone,
High quality Japanese water stone from Shapton with a grain size of # 12000 grit. The Japanese stone manufacturer Shapton, from Nabatame, (Tochigi), makes the hardest stones. In contrast to almost all other brands, Shapton stones remain flat longer and do not need to be flattened much less often.
The grinding process feels very different than when working on softer stones. One can feel the relative hardness of the stones Shapton during grinding and it sometimes feels as if the stone does not really do something but it certainly works and also very quickly.
The 120-grit stone works about as fast as the 240-grit SUN TIGER from Matsunaga.
The 1000-grit Shapton stone grinds faster than traditional Japanese 1000-grit stones, but if one looks at the edge with a microscope, one finds that the edge seems somewhat rougher than after using a traditional 800 grit stone.
This specific line of Shapton stones we offer is the Ha-no-kuromaku line which literally means 'sharpness behind the scenes'.
It is very important not to leave these Shapton stones in the water for too long. 5-10 minutes for the coarse stones is more than sufficient and the polishing stones (from # 4000) only need to be discussed. These stones are made of ceramic powder with a synthetic resin binder. these stones are therefore more sensitive to moisture than "baked" stones such as the Zanmai or Matsunaga stones.
- Dimensions of the stone: 210 X 70 X 15 mm
- Grain: # 12000 grit
- Synthetic resin bound
- Abrasive: Silicon carbide (SiC)
- Stone is supplied in a plastic box that can also serve as a standard.
The stone has a low moisture absorption, so after wetting the stone, grinding can be started immediately
Very high hardness and slow wear
Very long life
Grain size (Grit)
The grain size of Japanese grinding stones is expressed in a number. The higher the number, the finer the abrasive grain and the sharper the result. In principle there are 3 types of stones:
Sharpening stones (Japanese grain size 80-400)
Polishing stones (3000-30,000)