Naniwa pro stones/ new to freehand

[jwh720]

So I just picked up 3 naniwa pro stones 400 800 and 3k. My question is will these be good stones for sharpening and maintaining m390 maxamet s90v s110v. I have been using a wicked edge with diamond stones.

 

[Jason B.]

They are aluminum oxide so no they will not be a good choice for highly alloyed steels. Anything with 4% or greater Vanadium content will almost always need diamonds.

The Naniwa Pro stones are great for most everything else though.

 

[jwh720]

They are aluminum oxide so no they will not be a good choice for highly alloyed steels. Anything with 4% or greater Vanadium content will almost always need diamonds.

The Naniwa Pro stones are great for most everything else though.

Thank, I will pick up some diamond plates too then.