have u ever worn out a frame lock or liner lock.

[Chris "Anagarika"]

imho all the CRKT liner locks are 'iffy' at best i have had probs with several of them(ie kasper zytel, kasper pro and a falcon), all replaced by CRKT, but they failed nontheless, and none were used hard at all, one of them a zytel kasper was almost brand new, i would be wary of any/all CRKT liners myself esp if used hard......not at all as heavy duty as a BM/MT/etc.

When I got it (thanks to 1sks for making sure), I did test as indicated by Joe Talmadge in the FAQ. It passed with flying colors. However, now that it was brought up, I am concerned. The liner has moved a bit from original position, about 1/2 mm, but still far from the other side, and looking at the ramp of the tang, it shouldn't be so soon. I cannot be sure though .. and I don't obsessively open/close my knife day long ..

 

[Blop]

I am just repeating the info I was told by the guy responsible for the 520 project.

Yes, i think i get it.

Do you still have contact with this guy?

I would like to know if they care about this "spine whacking" thing, brought up at first by Wunderbar and myself after that and some others too.

Considering the very strong frame of the 520 i wanted to get a blade made from tougher steel and the knife maker who did it for me told me about the obvious differences in the tang as he compared the 710 to the 520 blades. Badly his replika showed the same problem, but with a bit of polishing and break in it went away.

I for myself think the different angles the ramps are showing are caused by the auto axis. Some may remember some reports of sticking axis locks one or two years ago, which of course got better by using but I guess BM modified the ramp to avoid any sticking (imagine an auto wich you can´t close smooth). But a little unaccuracy causes failure.

I would like to know if they are aware of the "spine whack problem" and what they do about it. Just because i like BM and the 520 very much.

 

[SIFU1A]

When I got it (thanks to 1sks for making sure), I did test as indicated by Joe Talmadge in the FAQ. It passed with flying colors. However, now that it was brought up, I am concerned. The liner has moved a bit from original position, about 1/2 mm, but still far from the other side, and looking at the ramp of the tang, it shouldn't be so soon. I cannot be sure though .. and I don't obsessively open/close my knife day long ..

if i was you i would just open the knife and LIGHTLY tap the blade tip against a floor with carpet etc and see if it slips or fails, if not ya are probably ok, if it does send it in to CRKT they will replace it, imho the CRKTs do need the lawks thing if ya re gonna really use it hard (or at all lol) in my experience all liners move some with use, not good on some/doesnt hurt others.

 

[fruitbat]

I once had a "Bo Bo Brand" knife that I got from a Military Surplus store that I completly wore out. Being a BoBo it was actually a good knife. It was small enought to fit in the coin pocket of my jeans and had a botton release for the liner lock. I carried that thing everywhere I went. Mostly used it for dirty work, when I didn't want to mess up my good knife. After about 2 years of hard use the blade had enough play in it you shake the knife and see the blade wiggle. Another year and the liner lock didn't work at all. After that I kept it around just to see how long it would last.
Later I was helping a friend with some house repairs. He came out from under the house and ask for a knife. Luckly I gave him the Bo Bo instead of my Spyderco Endura, because he left it under there. We didn't think of it until later that night. He left it under the house. He said he would get it the next time was under there to finsh what we had started. As far as I know it's still under there. I would sure love to find another one like it.

 

[Bilker]

Buck crosslock, what a POS! The tang is plastic! Had the back of the blade wedged against my thumb. Called Buck about it and they offered to replace it. I told them not to bother, did not want the same problems. Fixed it myself by drilling through the liners and inserting a pin, no more problems.

 

[rs422]

Would you please explain it in different words? How will an axis bar, even hardened wear a shelf into the harder tang?

I don't know if I can....except that the bar worked a "notch" into the tang...perhaps the two are hardened equally, or the bar is harder (I don't know)...by your post, I think you get what I mean....any way, I am just repeating the info I was told by the guy responsible for the 520 project.

Think about it! All it take is water to wear down granite, and that same granite will scratch the hell out of a knife blade. Bar and tang will wear together, the harder one will have less wear then the softer one. There is no way you can have metal parts in contact that move or bang against each other with no wearing of the metal. Look at how the Sebenza is designed, there is more metal contact on the tang and bar. The stress is not being put on a small strip of the tang, there is a cut out the exact same size so the stress is spread out helping to cut down on wear. Same with the bar lock on the Sebenza. more metal contact means more support and less wear. Even the pivot is larger giving more metal contact and less wear. And all this give you a very solid lock up also.

 

[yoda4561]

Hardness aside, the axis lockbar also rotates relatively freely, thus reducing overall wear on the axis bar, which I'm sure is softer. I don't think the bar actually "wears" down the tang, but if you look at where the bar engages it's a rather rough surface, those high points will get pushed down rather easily even if the lockbar is softer.

 

[Chris "Anagarika"]

if i was you i would just open the knife and LIGHTLY tap the blade tip against a floor with carpet etc and see if it slips or fails, if not ya are probably ok, if it does send it in to CRKT they will replace it, imho the CRKTs do need the lawks thing if ya re gonna really use it hard (or at all lol) in my experience all liners move some with use, not good on some/doesnt hurt others.

Thanks! That's what I did, even I tested it with strong whack (on the desk, to my tigh, etc.) with no slip. That's why I said thanks to Spark / 1sks that made extra effort to check for me (I did send him email to help, since the knife will be travelling all the way thousands of kilometers to my place .. brought over by a friend).

Anyway, for now, I think I am safe....