Spine wack

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Hi!

Spinewhacking is whacking the spine (back of blade) against something, i usually use my hand, one can use a wooden bench or something like it.
I try to do hard snaps, "rapsnaps", loose snaps and whatever.

Hope that i helped you out
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Be well!/Jonas aka 2Sharp

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IMPORTANT SAFETY TIP:
Be sure that your fingers are well clear of the blade's path in the event that the test actually succeeds in disengaging the liner.

I have not seen a walker liner lock fail during this test although I have heard a story. I would imagine that poor tolerances or a loose pivot screw could yield a failure. I have had liner locks disengage while using the knife due to grip pressure.

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I thought that:

Spine whacks result in premature wearing of the liner, distorting the lock engagement angle that Emerson reccomends and if it fails the test, rounding over the lock face on the Ti.

There is already a ton of force generated by the wave when that liner springs at full force to the end of its engagement on the tang. ( as opposed to a slow open where it slides up the lock face to lockup.)


Correct me if I am wrong.
 
petah said:
I thought that:

Spine whacks result in premature wearing of the liner, distorting the lock engagement angle that Emerson reccomends and if it fails the test, rounding over the lock face on the Ti.

There is already a ton of force generated by the wave when that liner springs at full force to the end of its engagement on the tang. ( as opposed to a slow open where it slides up the lock face to lockup.)


Correct me if I am wrong.
Click to expand...

It probably does, but it helps make some people feels safer/more confident in their purchase. Their property, their choice. Personally I think the practice shows very little of use, but it isn't like it is totally useless. The problem that tends to arise is that, like most tests, people often will then generalize based on an insignificant sample size, usually along the lines of my X failed Y, therefore all X must also fail Y.
 
When in your everyday use of a knife are you going to go, hey let me open this knife, grab it by the area that you know the blade closes into, and proceeded to hit it repeatedly in that direction. If one person can give me a legitimate, intelligent reason why you would need to do this I will send you something semi valuable.
 
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