USA Cold Steel 4max disassembly and quality check

Gress

Gold Member
Joined
Feb 8, 2009
Messages
1,782
I've been reading 4max US to Italy production comparisons for some time now.
I have a US production model and it indeed gives me this one "extra click" when I push the bar to unlock it to close. It did not annoy me, but I eventually became interested in checking on the quality of the parts and assembly of this knife.
So I disassembled it to inspect. Here is my findings.
The fit and finish of the parts when you disassemble it look great. All the parts are tightly fit and at the same time disassembly is easy enough.
IMGP7221.jpg


The blade is quality made and the lock surface on the blade is very smooth and well done
IMGP7222.jpg


The lock bar is equally well made with the lock surface being smooth and even
IMGP7224.jpg


IMGP7227.jpg


Here you can see the triad lock mechanism. Everything is done properly.
IMGP7230.jpg


I think that the "extra click" when unlocking is just due to very tight lock between the blade and the lock bar. It might be due to Ti to steel interface we all know on Ti locks. I am sure it will go away with use. For now I decided to put the knife together without any modifications or attempts to improve it.
IMGP7233.jpg


The knife is assembled back and as expected still has this "extra click", which now after I disassembled and inspected the knife I really completely fine with and even appreciate. It makes me feel this extremely solid and safe lock is even one extra click safer :)
IMGP7236a2912c6f537481b0.jpg


IMGP7238.jpg


Hope this is useful for those who like me was wondering if this was a production quality control issue. It sure does not look like that. Enjoy!
 
Last edited:
I think that the "extra click" when unlocking is just due to very tight lock between the blade and the lock bar. It might be due to Ti to steel interface we all know on Ti locks. I am sure it will go away with use. For now I decided to put the knife together without any modifications or attempts to improve it.

The lockbar is stainless steel (304?) not titanium. I've never minded the "click". It just means everything fits tight. Cycling the action works wonders for smoothing things out.
 
Gress Gress ...

Thanks so much for the detailed pics and your narration is top drawer stuff, too.

THIS is the way a folder should be made!

There is NOTHING on the production folder market that can touch the design of the 4MAX.

I got in on the ground floor with an early USA CS 4MAX-- the one with the little dogleg on the back of the lockbar--

My favorite production folder hands down. :D

I thought the wait was gonna kill me, but it made my fondness for the 4MAX grow stronger!

Seeing it exploded like this gives me even more pride of ownership.

The chunks of solid steel, slabs of Titanium, big ol' donuts of bronze, & planks of G10 scream... QUALITY!

Prodigious Dimensions = RELIABILITY :thumbsup::cool::thumbsup:


One question:

Did you have to use a roll pin punch for the stop pin?
 
Last edited:
The lockbar is stainless steel (304?) not titanium. I've never minded the "click". It just means everything fits tight. Cycling the action works wonders for smoothing things out.
That's what I assumed it is, but it is quite light and does feels like Ti. But i do not know for sure. If it is indeed steel, the click then is from very tight blade heel to lockbar surface to surface bond
 
Back
Top