Search:

Probably off topic, but, I can't understand the phrase "you have the abrasive particles and while honing the get smaller and smaller". How many hours someone hones with the same slurry, which is not...

There is indeed a difference in the Japanese and American grit scales, but, I'm not sure why. Grit=number of particles per square inch. And, 0.5micron is near 30+k from what I understand, not 12k....