ZT 0630 question

That is my biggest pet peeve about frame locks, when you can push the lock bar over to the opposite side. It doesn't seem right to me, I've read tons of explanations as to "why" this is is the way it is with various knives, and none of them have convinced me yet. My ZT 0300 series knives lock up and stay locked in the same position and cannot be pushed to the opposite side. Seems like the steel lock bar insert is the main culprit. If the insert was possibly a little softer than the blade it might hold better and not slip and slide as if it were greased up.
 
But, the same models all won't push over. I have a 0452 ZT gold, g10 , that will not move at all. I also have a rock solid, 0562cf and a liner lock, 0909 which will not move. I have, Reates that won't move, WE knives, that won't move. I just think it strange only some ZTs I've bought lately exhibit this mushy lockup.
 
It is trickier than one thinks to get the nlade tang angle correct. Too steep, the blade will less likely travel to the other side under pressure but it will more likely fail a spine whack. Too shallow, it would be the opposite.
 
ive been lucky on my zt frame locks. pushed them no movement even under firm pressure. weirdly ive never gotten any of my frame locks to do this or my liner locks for that matter. anyone had a liner lock suffer from this?

my 0630 is earlier lock up than yours op, but later lock up doesnt bother me at all. all i care about is a solid lock up that wont slip towards open when i put pressure on the spine. no whacking just firm pressure. only had a few slip open under moderate pushing. one was a zt 551 but it wouldnt unlock just slip a bit towards open, still safe for use.
 
RevDevil said:
That is my biggest pet peeve about frame locks, when you can push the lock bar over to the opposite side. It doesn't seem right to me, I've read tons of explanations as to "why" this is is the way it is with various knives, and none of them have convinced me yet. My ZT 0300 series knives lock up and stay locked in the same position and cannot be pushed to the opposite side. Seems like the steel lock bar insert is the main culprit. If the insert was possibly a little softer than the blade it might hold better and not slip and slide as if it were greased up.
Click to expand...

I think that the steel tabs on the lock bar may have been jumping the gun of titanium lockbars wearing out and going all the way over. There are lots of advantages to using a softer metal against the harder blade tang. The titanium is deformed by contact with the tang so it mates exactly with the blade tang. Something that takes much longer with the steel tab. I think carburizing lock like CRK would be the better answer.
 
Yep, I would agree, or simply use a carburized Ti insert rather than steel. Problem solved. :)
 
There is a video from STR that shows two backlocks. One is with a normal steel lockbar the other has a hardened lockbar. STR contends that the hardened lockbars have far more lock up problems because the hardened metal does not take slight deformations to match the blade tang.

The hardened lockbar backlock makes a loud pinging sound when opening, the softer steel one makes the click we are all used to.
 
Well... whatever the issue is, it won't cause a problem on my little island anymore. I traded away my last frame lock earlier this week and don't intend to get any more. I've got AXIS locks, back locks, and compression locks now and I'm pretty well satisfied with them.

My new micarta Grip has put every other folder here back in my storage case, even my well loved and used digi-cam Para 2 is on an "extended holiday".
 
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