New Sharpening Angle on Military?

H

Heyns van der Merwe

Joined
Mar 3, 1999
Messages
232
Sal / knowledgeable forumites,
on a previous question to Spyderco Customer Service, Danelle has mailed me that the sharpening angle and serrations on the newest serrated (CPM440V) Military model has been changed.

My brand-new Military (serrated) has "wavy" or "smooth" serrations, quite unlike the kind of serrations found on the Endura, for example.

Is this the newest serrated version of Military available? What is the purpose of this new angle and serrations? (It does not have all the extremely sharp "teeth"... Is this for edge retention, or what?)



[This message has been edited by Heyns van der Merwe (edited 01 April 1999).]
 
Heyns~
Word from Vince in Engineering is the angle changed from approximately 19 to approximately 16....does that help?

Danelle

 
Danelle,
it does give an indication, thanks. However, I am STILL trying to figure out why the serrations on the Military are so "wavy" and "smooth", instead of being as "aggressive" and well-defined as on the Endura, for example? (the teeth on the Endura's serrations are MUCH sharper tahn those on the Military).


 
Danelle,
it does give an indication, thanks. However, I am STILL trying to figure out why the serrations on the Military are so "wavy" and "smooth", instead of being as "aggressive" and well-defined as on the Endura, for example? (the teeth on the Endura's serrations are MUCH sharper than those on the Military).


 
Indeed. I have been wondering the same thing. When I examened a new-generation Military, I thought it was simply dull, compared to Enduras and Delicas I've handled and/or owned. So there is a reason for this? For me, it's academic--perhaps idle curiosity--since I'll buy the plain edged version anyway.

David Rock
 
I would simply guess they are adjusting the blade cutting profile to match the properties of the steel. 440V should hold a lower angle much better than say ATS-34 or AUS-8A and of course a lower angle will cut better. However there have been reports of 440V having lower lateral strength so the sharp points on the serrations are a problem.

If this is the reasoning then I think its a huge jump ahead for Spyderco, so many knife companies make the same knife out of different steels and change nothing about the blade profile. This is fairly stupid as you are not taking advantage of the strengths or protecting against the weaknesses.

James, did the new plain edge Military I order from you a week or so ago come with the lower edge bevel or was this change too recent?

-Cliff
 
To answer your questions the angle was changed on the CPM440V and the serrations are not as pointy as other models because in testing we found them to be stronger than having sharp points. This is due to the makeup of the steel.
Hope this helps.
Vince.
 
Thanks Vince! I thought as much (after a chat to one of the metallurgists in our company). Well, as always, Spyderco is tops on the technical excellence list!

 
I bet Cliff is right about the serrations. Wavy serrations are much more durable. I haven't met the "aggressive" serrations yet that I haven't popped the points off reasonably quickly. On an inexpensive knife like the endura I don't care about that, but on a knife I might want to carry forever, more durable serrations seem reasonable. Those wavy serrations may not quite perform like pointed serrations, but they still cut like serrations.
 
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