Which stone set for knife sharpening

Joined
Nov 3, 2021
Messages
91
Hi,

I'd like to ask which set of stones would you recommend sharpening knives from cheap kitchen knives to S90V EDC knives? I'd use it in a Ruixin assisted sharpener and the stone size should be 6x1 inches.
Would you recommend aluminum oxide or silicon carbide? Boride T2 set or CS-HD, or different stones for different grit size. Which stones wear out slower and in which stone does not bite the edge of the knife? I'd use a 150, 320, 600, 1200 and for finishing stone something between 3000-6000.
 
I recommend Chef knives to go's three stone diamond plate set. 120, 400, and 1000 grit. Will sharpen any steel. Can be used wet or dry. Don't cost a fortune.

O.B.
 
Cheap stainless kitchen knives and hard-carbide supersteels both work best with diamond or CBN. The cheapies because diamond or CBN are best at abrading their gummy burrs, and the supersteels because, unlike aluminum oxide or silicon carbide, diamond and CBN can actually cut their carbides.

I prefer stones to plates myself. The Venev 6x1 diamond stones are excellent.
 
Thanks for answer. I didn't know that CBN is that hard.
I have a cheap set of diamond stones which came with Ruixin but I don't really like it. I think it not just the metal which falls while I'm sharpening. I'd like mirror polish edges.
I heard that DMT diamond stones are one of the best because the monocrystalline particles and the galvanized bonding. But I didn't find DMT available for sale in this size.
After I read that galvanized bonding not better that resin because galvanized is barreling and resin bonded can be flattened.
I'm not sure how strong a resin bond is. I'm afraid that the edge would bite in it.
So at the end I'd buy a CBN or diamond 'stone'. Which do you recommend and why? Should I buy on all grit sizes the same?
What would you recommend for the last mirror polish? A softer aluminum oxide, silicon carbide at around 4000 grit, or something else? Maybe a leather strop with wich compound?
 
Thanks for answer. I didn't know that CBN is that hard.
I have a cheap set of diamond stones which came with Ruixin but I don't really like it. I think it not just the metal which falls while I'm sharpening. I'd like mirror polish edges.
I heard that DMT diamond stones are one of the best because the monocrystalline particles and the galvanized bonding. But I didn't find DMT available for sale in this size.
After I read that galvanized bonding not better that resin because galvanized is barreling and resin bonded can be flattened.
I'm not sure how strong a resin bond is. I'm afraid that the edge would bite in it.
So at the end I'd buy a CBN or diamond 'stone'. Which do you recommend and why? Should I buy on all grit sizes the same?
What would you recommend for the last mirror polish? A softer aluminum oxide, silicon carbide at around 4000 grit, or something else? Maybe a leather strop with wich compound?
An excellent hardness chart was posted in this forum: https://www.bladeforums.com/threads/carbide-hardness-chart.1705186/

It's useful to differentiate plates (abrasive bonded to a metal surface) from stones (abrasive suspended in some medium like resin). Plates make deeper scratches because the abrasive particles are all sitting proud on a surface, rather than partially exposed as the medium wears.

An edge can certainly bite into a resin bonded surface, but only if your angle is too high. Using too high an angle on a plate wouldn't go well either. Resin bonds are intended to wear away, exposing fresh abrasive as you use them, but the hardness of the resin varies a lot. The Venevs I recommended have a medium bond softness.

I don't generally mirror polish, because it's not functionally useful for most applications. When I do, for razors or Japanese single bevel knives, it's by hand on on simple carbon steels, so saying that the Shapton Glass HC series is really good at making mirror polish on those steels is not that helpful. I've done it on supersteels in the past, using 1x6 stones, but only with the expensive and hard-to-maintain 15K CBN stone I got from Gritomatic.
 
I have tried thousands of dollars in sharpening stones over the years but lately find myself using mostly the relatively cheap Ultra Sharp diamond plates. They work very well and are holding up better than DMTs.
 
Back
Top