How do the grit sizes differ between FEPA and JIS?
Especially in the area of sharpening stones for kitchen knives, the JIS grit sizes are frequently used for Japanese Waterstones.
Frequently we are asked about the different specifications of the grit size according to FEPA or JIS standards. As a European manufacturer of abrasives, we specify the grit sizes we use according to the FEPA standard.
In the following you will find a table with a comparison of the grit sizes according to FEPA and JIS as well as ANSI standard. In addition to the abrasive grain, however, the bond in particular is an important factor influencing the abrasive effect of a sharpening stone. Two abrasives with the same grit quality and size have completely different effects in different bonds.