Results 1 to 10 of 31
Thread: Beginners stone
Threaded View
-
03-12-2017, 07:56 PM #25
- Join Date
- Dec 2014
- Location
- Virginia, USA
- Posts
- 2,224
Thanked: 481It's not the old JIS scale. Old JIS scale ended at 3K, 5.7 Microns. If the old one had continued to rate grit finer than 5.7 microns, 3 microns would come in around 5.5K or 6K grit.