For those with s90v and prefer higher grits

HwangJino

HwangJino

Joined
Dec 2, 2012
Messages
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What is your prefer level of polish on your s90v?
I have m390 and it seems to love 5000 grit. Tested on 1000, 2000, 4000, 5000, 8000, and 10000. It flies through material in the 5000 grit range. Took a long time to find its preference, just wondering what other people like on their s90v.
Have a knife coming soon, in s90v and never had this steel before.
 
Same as any good steel, the last stone is a 5 micron diamond, then finish with a .5 micron alox strop. Native Chief at 15 dps and it's mainly a glorified box cutter.
 
I've been doing up to 1200 on a diamond stone, then stropping on a 14 Micron, 3 Micron and then 1 Micron leather strop with diamond compound.
 
I gotta get a 600 diamond stone. I go 325 to 1200 and then strop. I want to see what the 600 diamond edge/strop is like!
 
Over the years and after sharpening thousands of knives, I’ve settled on three sharpening methods.

I sharpen all the cheap, sheet metal knives from supermarkets that use a honing steel (most of the knives I sharpen) with a single stone of 100/80 grit (225 grit) plus leather (plain or 7/5 diamond).

Then, for all knives made of higher-quality steel but not powder steel (N690, D2, 1095, VG10...), I finish with a PDT 28/20 or 14/10 stone plus leather.

And finally, I sharpen all powder steel knives using the entire range of stones I have, finishing with a 1/0-micron grit stone plus clean kangaroo leather without suspension.

A good stone and the right sharpening technique are more important than the Grid.
 
Did this Spyderco Military in S90V steel several years ago for a Dutch Special Forces operator.
He is the explosives expert in his team (as well as a knife afi), and one of the specific tasks he uses this knife for is to cut detonation cord for blowing out doors.
The edge has to be able to push cut this apparently fairly abrasive stuff silently & efficiently, sometimes on not well suited surfaces, as well as have some bite left for other tasks.
According to him the 6 micron polish has proven to be very effective.

First i used a standard Paper Wheel with silicon carbide grit, followed by a second Paper Wheel with 15 micron diamond paste as well as a third Paper Wheel with 6 micron diamond paste, after which the tiny burr was removed on the Tormek leather wheel.
It's not a true mirror edge, as with the magnifying glass in my Victorinox SwissChamp i can still see fine scratching, but with the naked eye it's close.
Sharpness is hairwhittling (both to and from the root) and it can also slice single layer toiletpaper with ease.






 
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ferider ferider How you like your S90v served??🤔.

Smooth n shiny or.rough n.ragged.....😁.........

I only have a.few in it and it really don't matter to me...😜.....It cuts....👍
 
jfk1110 said:
ferider ferider How you like your S90v served??🤔.

Smooth n shiny or.rough n.ragged.....😁.........

I only have a.few in it and it really don't matter to me...😜.....It cuts....👍
Click to expand...

Morning, J.

I love S90V. But, just like navman navman , I like it with a toothier edge, that's why I didn't contribute here so far.

I used to sharpen it for the longest time on a Spyderco medium ceramic benchstone; these days, I use a Naniwa Diamond Pro / 600 (both wet).

Cuts aggressively, and for a long time. I prefer S90V a bit over - say - M390 or S110v because it seems a little bit tougher in my applications (no chips), and corrosion resistance is good enough.

Roland.
 
Well ill be looking for a cheaper knife with s90v to practice on. Will be finishing in 1000, 2000, 4000 and 8000 to see the performance differences, before sharpening thrle expensive knife with s90v.
Maybe spyderco?
 
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