First ZT

Why would you intentionally spine whack your knife?
It does Nothing other than potentially damage your knife...

"Nothing" is a bit strong, no? I don't generally spine whack my knives either (I've only done it intentionally to a knife that I already had reason to be suspicious about the lock engagement being sketchy) but wouldn't spine whacking give you an idea what would happen if you accidentally applied a force to the wrong side of the blade, something that does happen accidentally in real life every now and again? That may not be much, but it's not nothing either.
 
"Nothing" is a bit strong, no? I don't generally spine whack my knives either (I've only done it intentionally to a knife that I already had reason to be suspicious about the lock engagement being sketchy) but wouldn't spine whacking give you an idea what would happen if you accidentally applied a force to the wrong side of the blade, something that does happen accidentally in real life every now and again? That may not be much, but it's not nothing either.

I've used my knives in all different settings from working on cars, camping, house/business renovations and I can say I've never had anything remotely comparable to a spine whack happening on accident. Probably because I'm smart enough to use the cutting side........which is what they are all designed for.
 
I just tested my 0350 by laying a towel on the edge of a table so as not to mar the knife or the table and did some pretty hard spine whacks......did not fail.

I guess all is well in my world.
 
Yeah it was just my specific knife. I by no means thought it was all ZT knives. I just took it back put a few more 20s down and got a 0460 instead.

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I'd also like to add for everyone flipping out about spin whacks that I got it against my thigh and it did the same thing. So you can think I'm an idiot all you want but it was definitely a defective product. I'm not mad at ZT. Stuff happens. I just don't want a knife I can't trust in reasonable conditions.

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My observations biped are that once a knife fails from a spine whack it will always fail. I don't think you are an idiot, but it was not a defective product. You made a mistake and gave it a spine whack, thereby causing damage and an unsafe knife that would fail over and over. I'm glad you got rid of it. A knife you don't feel safe about you won't use and they should all be used. :thumbup:
 
Yeah it was just my specific knife. I by no means thought it was all ZT knives. I just took it back put a few more 20s down and got a 0460 instead.

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Wait...0460?
 
Check the tang and see if there is any oil or grease on it. Sometimes some lube can make its way to the tang and affect lockup.

If there's nothing on the tang or lock face, I'd take it back to the dealer first and see what they say. Warranty would be my next step.

ZT's are awesome and I'm sure you'll be happy with the knife in the end.

I have found this to be true, oil or grease on the lock or tang surface has made a few of my liner locks worthless until I cleaned it off. I think THIS is the biggest drawback to liner locks for me, since I work in oil. The framelock ZTs are strong though, in the Cold Steel videos the 301 did pretty dang good, I think it held close to 300lbs before it failed. I must admit it the CS video showing the 350 failing with hand pressure turned me off to it, even the kershaw blurs lock proved stronger.
 
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