Grit Table / waterstones / Naniwa Super Stone
Product, no maker data
Waterstone line, magnesia bond
Naniwa publishes no particle size for the Super Stone line. Only the fine grades are even estimable from forum figures; the coarse and mid ladder is unknown and left out. Faded, our estimate.
Each grade below shows its size in microns, its spread (the published distribution, where a maker or standard gives one; most makers publish none), and where that size lands on the reference scale, a shared yardstick for reading grit numbers across makers.
C-estimated.
C-estimated.