Thread: Natural Stone Grit Confusion

well SEM pictures are probably not the most cost effective way to investigate an edge as a set of SEM photos can cost up to 10.000 Bucks, I guess.

I would go with the "feel". I have my ways to test an edge, not a stone.
The TPT in the high grit range is quite effective as well as the HHT and of course the shave.

A fast cutter isn´t of course always a lower grit hone.
The higher the content of abrasives, the faster it cuts.
I came to the conclusion that most j-nats are very, very fast cutters for their grit range and have high amounts of abrasives.
A slurry on a j-nat always makes it cut really, really fast.
Of course the results change, these stones tend to produce a hazy finish (kasumi) when slurried,
even though they polish when used without slurry.
And most of the time the stone used in polishing mode without slurry
will not be strong enough to polish out the hazy finish left by his own slurry.
Interesting, me thinks