Great review Kodiak! The fact that some people have problems with the spine whack and others don't just goes to show the problems inherent in liner locks. Using my SHARP scientific computer EL-5500II, I calculated a point grade of 1.8, based on a 4 point scale and C it is! 1.7 is a C-.
One other comment. If liner locks can be prone to failure when new, what happens when the stop pin starts to wear? Does the lock become weaker or stronger? Certainly if the wear is too great and there is actually play in the lock, it should be pretty unreliable shouldn't it? And I wonder how that compares to lockbacks? I have a lot of old lockbacks with play in the lockup.
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Hoodoo
I get some pleasure from finding a relentlessly peaceful use for a combative looking knife.
JKM

One other comment. If liner locks can be prone to failure when new, what happens when the stop pin starts to wear? Does the lock become weaker or stronger? Certainly if the wear is too great and there is actually play in the lock, it should be pretty unreliable shouldn't it? And I wonder how that compares to lockbacks? I have a lot of old lockbacks with play in the lockup.
------------------
Hoodoo
I get some pleasure from finding a relentlessly peaceful use for a combative looking knife.
JKM