Tough Liner lock

slimshaneee said:
I find the whole spine whack test useless. To me it would be like buying a new car, getting it home and ramming it into a wall to test bumper failure limits.
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Haha! Good comparison. In all my years of liner lock use, i have never put force on the back of the blade downwards while cutting. At least not as much pressure pushing down as going up from the material I'm cutting. Spine whack test is dumb.
 
slimshaneee said:
I find the whole spine whack test useless. To me it would be like buying a new car, getting it home and ramming it into a wall to test bumper failure limits.

When I am using an extremely sharp knife I use it with care. I use the sharp side of it. If I am cutting with alot of force, I think to myself what will happen if the knife goes through faster than anticipated.

I have personally stabbed a cqc 7 through a steel wall stud. It is a liner lock, I made sure that the motion I was using would put little if ANY pressure on the lock. It did not fold.

I think spine whackers ought to stick to fixed blades.
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I think Spine whacking is more like buying a new car and driving it off the lot, and by the time you get home you have pretty much burned the tires off the car. You've power slid it around corners and dropped the clutch from 5500 RPM about 12 times on the way home. And you now know the car will take it when and if you need it.
 
I have used the heck out of folders and having started with slipjoints, I never give a thought to a lock failure. I look them over and if the liner lock positions itself pretty much in the center and there is no blade play then I am happy with it and no further thought is given. I have a S&W Extreme Ops that I have carried just about every day for 7 years or so. I carry this knife to abuse when I don't want to ruin a good knife. It remains razor sharp and has never attempted to unlock regardless of the job. It has skinned big game, small game, whittled on walking sticks, scraped off caskets, opened cans, cut food and pryed things open. No Problems. I always carry the Vic Explorer as well.
 
slimshaneee said:
I have personally stabbed a cqc 7 through a steel wall stud. It is a liner lock, I made sure that the motion I was using would put little if ANY pressure on the lock. It did not fold.
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Actually, that is a good example of proper (IMO) folder blade design. The tip of the blade is above the centerline and, therefor, a stabbing movement forces the blade into the stop with more force than is put on the lock.

Most of the liner-lock failures I've dealt with, either mine or a friend's failures, dealt with stabbing movements.

Personally, I won't recommend a liner-lock knife to anyone anymore as it simply is not worth the hassle when the lock fails. Plenty of more reliable locks out there - buy a knife with one.
 
Spine whacking, or spine tapping, what I like, seems to either be accepted or rejected with no middle ground. It's easy to see both pov, but I still spine tap my knives and probably will continue. I don't see 5 rapid taps on a padded table top as being harmful to the knife and of all I've spine tapped, I've never noticed any damage that could be blamed on the spine tapping........now, spine whacking, depending on one's interpetation of WHACKING, could be a problem!;):thumbup::)
 
Columbia River puts a secondary mechanism in some of their liner-lock knives. When the liner snaps open, a metal protrusion can be rotated into that space, mechanically preventing the lock from closing.
Some people find them frustrating or a hassle, others like the extra security, but either way it's a neat feature.
 
missin_hobo said:
Columbia River puts a secondary mechanism in some of their liner-lock knives. When the liner snaps open, a metal protrusion can be rotated into that space, mechanically preventing the lock from closing.
Some people find them frustrating or a hassle, others like the extra security, but either way it's a neat feature.
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I've seen several post's over the years that disliked the CRK&T lock, but I always thought it neat.
 
I used to sell lots of CRKTs before the auto lawks system. After it came in, I sold next to none. Horrible design. Very difficult to close one handed quickly. Not practical at all.
 
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