horzuff wrote: ↑Wed Apr 09, 2025 7:06 am
With detent ball/hole based locks changing the depth to which the blade closes might make the detent ball become misaligned with the detent hole which could lead to detent lash or lack of detent, I wouldn't risk it personally
Yep, was going to post the exact same thing. It technically would fix the protruding tip problem, but as you mentioned it'll just introduce a new problem with detent lash or lack of detent. I had a separate problem on a few knives where the detent ball wasn't fully engaging so the detent force was very weak and unsafe imo. I removed a tiny amount of material where the stop pin interfaces with the tang of the blade to fix that issue. Wouldn't recommend it to anyone unless you know what you're doing because we're talking thousandths of an inch too much removed and you'll get detent lash. I just happened to have prior experience hand fitting small metal parts so this wasn't a problem for me.
It's also very time consuming because at least with the PM2 and similar for example, you can't fit a stone in between the scales to access the tang, which means you need to disassemble every time. Definitely easier to do on a Manix since you don't have to disassemble it at all.
Here's the area in question on a Shaman. You can see what I mean about having to disassemble it every time to even get access to that area.
Should be reiterated, but I don't recommend removing material here just to fix the tip position.
Here's a PM2 I removed material to fix the detent engagement. I did fix the detent engagement, but did introduce an almost unnoticeable hint of detent lash because I started to get impatient after maybe the 10-15th disassembly/reassembly and removed a hint too much. Only noticeable if you very very slow roll the knife open, but at least the detent force is much stronger now since the ball fully engages the detent hole. It was a seconds model and a user so whatever.
Here's the detent ball track of the same PM2 and hopefully it illustrates why it's possible to get detent lash after removing too much material from the area in the photos above. Liner locks work the same way. The detent ball hole on the blade is generally much larger than the actual detent ball, so removing more material than necessary means the detent ball can travel too far back and essentially have free movement (the "lash"). In normal operation the detent ball should be fully seated, yet kissing the edge of the detent hole so there shouldn't be any play.
All that said, I'd just recommend removing material from the spine to fix the protruding tip personally. Not the best looking fix but at least then one won't run the risk of any potential functional issues afterwards.