*Ceramic/High pressure cast and 1300 degree celcius treated
It is a medium fine stone after using a medium grit (#1000, #1200 or #1500)
It is a popular stone amoung planing competiters in Kezurou-kai Japan.
February 14, 2019 by Scott NehringIf we're going to agree your 4000 grit stone is 4000, then the 3000 is as I've said definitely around 2500. It will keep turning a burr if you stay on the stone. The 4000 will not. When freshly dressed it cut's like 2000-2500 but it's not very friable, meaning new particles don't keep coming up and the slurry on the stone just keeps getting finer and finer. After about 10min on the stone I woul... read more↓