Cpm 440v

[gull wing]

What method to use in sharpening CPM440V steel?
I purchased a Spyderco it cut great out of the box, but I cannot seem to get a good edge on it.

I have used, in the past, a Lanskey System and it did a good job for me. I usually start of with a GREEN stone (aluninum oxide) i think, then finish with a soft Arkansas.

 

[Coonskinner]

440V is a tough steel to sharpen unless you have diamond hones. The carbides are so hard that while you can sharpen it with ceramics, you have a long, slow process if you have allowed the knife to get really dull.

I try to touch up my one CPM 440V blade often enough to keep the edge from really getting in too bad a shape, and I get by this way. It is not my favorite steel.

I recommend that you invest in DMT benchstones, fine and ultra fine.

 

[ZENGHOST]

I use a Spyderco Sharpmaker to sharpen my Kershaw Boa (with additional ultrafine rods)--also CPM440V. That steel is a pain to sharpen if you let it get dull. I documented my frustration in this thread... http://www.bladeforums.com/forums/showthread.php?s=&threadid=201156 but eventually managed to get it sharp. The Sharpmaker is great for maintaining edges, but without the diamond rods I took all night to put an edge on mine after I let it get dull

 

[gull wing]

Thank you for the help. I now use diamond sharpeners to sharpen my CPM 440V blade and get quick results. I really like the edge holding ability on this blade. (I like my knife again)

Again, Thanks!

 

[YoungCutter]

I've gotten better than factory edge results on both my 440V Native and Chinook using the standard 204 Tri-Angle sharpmaker, it's alot of effort, but it's almost worth it
Try some diamond sleeves to make your life easier.