S30V vs a DMT Extra Course

C

Col. Cornelius

Joined
May 20, 2009
Messages
648
Wow, I had my first experience rebeveling a S30V blade last night. I used a 8"x3" DMT Extra Course to start. It took me a little over an hour of continous work to rebevel the edge. I'm guessing I brought it down to about 15 to 17 degrees per side.

It gave me a new insight in how wear resistant S30V is! The knfe is a USA made Gerber Stag Freeman. The factory edge didn't hold up very well and I'm hoping the new edge will do better (the factory sharpening might have damaged the metal right on the edge due to heat build up).

I'm glad I had the Diamonds to work with. I can't imagine how long my Norton course would have taken!

After the new bevel angle was set, I worked up through the various DMT grits, finally finishing the edge with the Extra Extra Fine and the stropped with green compound on leather. The results are outstanding, hair whittling, mirror polish sharp. I actually like the knife better now!
 
Colonel, I did a rebevel on my S30V Buck 110 using a Norton coarse Crystolon and it took about 1.5 hour to take it to the same angle as you state . Just alittle longer than your effort on a extra coarse diamond stone . Plus your diamond runs 60$ plus shipping and mine only 40$ . But I'll concede the use of a X-coarse diamond stone for rebeveling S30V as some other supply houses state thats what the diamond is good for . DM
 
I've used sandpaper on S60V and it went quick. 150 grit FTW. I'm not sure how it compares to your stones but I found it very fast for reprofiling compared to the miserable brown SM rods... Did 5x the work the SM did in less than half the time.
 
Only extra coarse? You should have used DMT extra extra coarse at 120 mesh.
 
Problem is a lot of those tend to have rounded corners and that doesn't lend itself to precise sharpening . DM
 
If i don't use a dremel and a silicon carbide chainsaw sharpener when reprofiling then i use a strip of 80grit Norton sandpaper superglued to a jumbo craft stick. I use the sandpaper with Hoppe' s gun oil. A three quarter inch by two inch piece of sandpaper seems to last forever with the oil. I hold the knife still and move the sandpaper rapidly back and forth the length of the blade. It's not hard to see or control the angle using this method.


Johnny
 
1 hour? Hah! That's nothing! It took me about 8 hours to get my Delica in VG-10 down to 10° on one side. And I'm going to hate to find out how long it's going to take to get my ZDP-189 blade's angle down.

David Martin said:
Problem is a lot of those tend to have rounded corners and that doesn't lend itself to precise sharpening . DM
Click to expand...

Right on. I'm gonna try to take mine to the machine shop at the engineering building at my school and see if they can grind off the sides to get rid of the rounded corners.

How in the world can DMT do this? The rounded corners just don't make sense...
 
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