Liner lock/Frame Lock construction

B

Brad Southard

Joined
Jan 28, 2006
Messages
86
I just posted this on STR's forum and realized right after posting it. Well Duh, maybe I should post this in the Knife Makers Forum.

So I'll post it here as well. More minds is always a good thing.



I have been looking for a couple of weeks for information on how to build a really solid liner lock or frame lock. Spyderco is known to make good liner locks and frame locks. What I'm trying to determine is what they do that makes theirs so effective and strong as well as long lasting. I'm sure it has something to do with the way the contact is made but I can seem to find any threads or posts on it. Then again I'm having some trouble with the search function.

So what are your thoughts on what makes a good liner lock, or frame lock, and how does that differ from a "lower quality" lock.

Thanks

Brad
 
one thing is to taper the face of the lock piece slightly and the back of the blade where the lock meets it so that as they wear the lock simply moves a bit farther across the back of the blade and the lock up remains firm. A high end model might also use bronze spacers instead of nylon and I think some actually use bearings in the pivot. A lot of it though is blade material, (for instance all 440 is not the same) fit and finish. I have done a couple liner locks and I start with a slightly under pivot hole and slowly ream it utill I get a perfect fit on the pivot. I keep slowly using a diamond sharping pad to work the back of the blade and trying it in the frame until it just locks up. I get to pick that out the handle material that I want.
 
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