Recommendation? What should I do with my ZT(framelock issue)?

My zt 0620 had this issue too. The way I see it there is the smart way and a dumb way to fix this.

Smart: send them into ZT for warranty work.

Dumb: take the knife apart and gently bend the lockbar just abit further in. Be careful not to overdo it. I used a monkey wrench with cloth over the jaws to gain better leverage. Bending it abit further in completely solved the problem on mine.

 

The only option then is to do it yourself.

Or where do you live in Canada?

 

only 1 way. send it to zt for repair work.

 

You could ask them if they might do it for you if you just send them the lock side? Might be less hassle with customs. Just a thought.

 

You need the blade to be able to put the knife back together and check if it worked.

 

You live anywhere near Toronto or do you ever come to the city?

 

Well I was thinking that ZT can do it with just the lockside somehow.

 

Even if you just sent them the whole handle they aren’t going to stick a new blade in there just to test if the lockup worked. I doubt they would use a blade from their stock for that.

@Gideons you could always send them an email and find out.

 

I've bent lockbars inward on multiple knives. Not because I observed lock slip, rather because it was apparent that they had only just enough spring strength to engage, without any additional strength to wear-in.
It's an easy fix. I got the desired result every time.
If your lock is slipping you may be better off sending it in.

 

Did you alcohol the lock faces? Tighten all the hardware? Open it a few hundred times?

 

Send to ZT for repair or replacement.

 

I don’t advise trying to manually adjust lockbar tension as a means to that particular end; what you’re describing is lock slip, which is caused by a combination of lock geometry (both the materials and angles of both the blade tang and lock interfaces) and the tension on the lockbar. I’m not familiar with KAI’s warranty policy, but manual bending of the lockbar sounds like the kind of thing that voids warranties.

ZT warranty service or a return / exhange to the seller are far and away your best options, as those run no risk of voiding a warranty and little risk of getting an unsatisfactory result in the end.

 

Common zt issues. Send in for service.

 

Yeah I had a black ZT 620 with really weak lock tension. I'm guessing they started doing that because a lot of their older knives were actually built with really strong detents and tension and customers probably started whining how it hurt their fingers to flip the knives constantly.

 

Just bend it yourself, go slow and be careful. Or send it to KAI to have some kid they just hired do it for you.

 

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This video reminds me of the CS vs CRK videos. Why would you whack your knife on the spine in daily usage? Daily usage puts pressure in the other direction, towards lockup. He discounts this but only because it supports his point IMO.