ZT 0630 question

B

bradytx

Joined
Jul 9, 2013
Messages
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I purchased a ZT 0630 from an online retailer, I absolutely love the knife, but a few things are bothering me.

Is a 50% lockup normal out of the box? 50% lockup when opened hard, 55% when opened slow. Also, the stone wash under the ZT logo is somewhat on the satin portion of the blade. Do y'all think this is worth exchanging for another? Trying to upload pictures now.

Also, the ZT 0630 is absolutely amazing, the design is absolutely perfect. The pictures of the blade online don't do it justice.

Scratching under ZT logo, looks like stonewash overlapped satin.
inxts9.jpg


Lockup when blade is slowly opened, about 5 or 10% less when blade is opened with authority.
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Ouch.

Well, those marks totally ruin the blade as a show piece and will probably make the knife of less value to some collectors,

So it may be in your best interest to reconsider keeping it.


No , but for reals, nice knife, now get to the cutting. Chop, chop.
 
Well it's a heck of a knife, but kinda particular about my blades. Haha. How I did a 180 on the blade shape boggles my mind, the shape is amazing.
 
I owned every version of the Emerson ZT collab and after years of use my ZT 0620cf had lock up similar to your knife. I'm surprised to see a new knife with such late lock up.
 
I have my 2 year old 450 in my pocket and took a look at the lock up. Yours is about twice as far over than mine. Carried and flipped a gajillion times!!
Tell you the truth, I don't thing any of my ZTs have moved much, if at all.
Yours might not move over any more, or if it does it will probably not move much at all.
If the grind marks bother you, return it. You'll never be able to tear your eyes away from that spot!!
Joe
 
My lock up on my 630 was right where yours is fresh out of the box. It has not moved since!
 
About half the ZT's I've bought lately have lockup, where I can just push the lockbar way over with thumb pressure. One 0452cf I could push way over, also a 0804cf and a 0920 will move all the way over. A 0562cf, won't move at all and a 0452 G10 gold, won't move. Here's the 0452 that would move. Strange they all lockup early otherwise.

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That said , Jill, are they still safe?

I have a KAI emerson CQC-6K that's at about 60% now, rolls eyes.. started just under 50% but I dunno if my grip on the framelock contributed to it. Blade has no rock, feels reasonably solid still but I am losing confidence in it. it's barely 6 months old. I know it's cheap and I can always get another, I guess....
 
My ZT0620 has been used for a couple of years now and the lockup is less than yours, but it hasn't moved. I'm never particularly worried about the lockup distance. I'm more concerned if there is lock rock. If the blade locks up solid and doesn't move, that's the most important thing.

As for marks on the blade, unless you are planning on never using the knife and just look at it, then I would be worried about scratches. Otherwise, just use the knife and enjoy it. That's what knives are made for.
 
Mine locks about the same, and it hasn't traveled since.

It's probably the most solidly locked folder in my collection.

Conversely, I have a 350 that recently came back from a tune up and blade swap out that has too much angle on the blade/liner junction that will fail with the lightest tap. Not a whack, but with just the smallest bump.

No worries. ZT has already told me to send it in and they'll fix/swap it out. Their CS is fantastic.

Back to the 630, it never hurts to contact ZT and see what they think. It really is an awesome beast.
I seem to have a ZT for every occasion:
350 for work
909 for camping
450 for dress
452 for fun
630 for tactical carry
 
dalefuller said:
None of my ZTs has ever locked up that far over, even after being used for a while.
Click to expand...

Have you tried to push them over? Those lockup early but they were pushed over by thumb pressure. Others have stated theirs will push over as well. I just don't see why a few of mine are rock solid and 3 will move under pressure. You would think they'd be consistent.
 
Sorry Jill... I was referring to the OP, not your pix.

But, to answer your question, yes. That's always one of the checks I do periodically on any folder. I try to push the blade closed against the lock (no whacks... I don't do them) when it's new and off and on after that. If it's a liner lock or frame lock, I also try to move the lockbar once the knife is open. I've found that almost any lockbar can be pushed in a little bit more, but none of mine moved enough to change the lockup position drastically. ZTs have been some of my most consistently stable and dependable frame & liner locks over the years.
 
More thoughts on my post above...

I have noticed in other brands that the locks that move the most have blade tangs that have very shallow angles, which makes some sense, I guess. The steeper angles are harder to move against. I had an Al Mar Nomad like that one time. I could open the knife normally and let it lock up. Then I could either push the lockbar all the way over to the liner with almost no pressure, or I could put light pressure on the blade spine and the lockbar would slip back to the unlocked position. To their credit, Al Mar took the knife back and replaced the entire lockbar side on their dime. Even the shipping was on them. The knife was perfect when it came back.

The slightly rounded tang angles, like a couple of my early SnG's had, also allowed some manual manipulation of the lockbar when the knife was locked open.
 
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