Carbon Fiber Sebenzas and Blade Centering

D

Don M

Joined
Apr 30, 2000
Messages
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I seem to recall reading about blade centering issues with carbon fiber Sebenzas. Can anyone refresh my memory as to the cause? Does this issue also exist with the Inkosi (small)?
 
I've been wondering about this too because I'm pretty sure I read the same thing at one point, and it's got me shying away from a C.F. model.

I don't think it'd bother me too bad if the blade became off centered over time, IF, it was barely noticeable and you'd need a keen eye to even notice, and then you'd have to measure to be sure. If the blade is going to smash against the titanium scale over time, I don't want it.
 
It's got something to do with the uber tight tolerances and the difference in material properties from the Ti to CF sides. No way to get them as close as if both sides were Ti.

They may get a C-hair off center over time, but I doubt it'll ever get so far off that the blade would contact the scale or impede function. I would not let this be a deterrent from buying a CF model.
 
mt666tm said:
It's got something to do with the uber tight tolerances and the difference in material properties from the Ti to CF sides. No way to get them as close as if both sides were Ti.

They may get a C-hair off center over time, but I doubt it'll ever get so far off that the blade would contact the scale or impede function. I would not let this be a deterrent from buying a CF model.
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Exactly. Well summerized! It is also recognized by CRK. They keep explaining that they can possibly adjust this during spa service, but do not guarantee that the effect won't return. It is caused by the different material characteristics of cf and ti.
 
I've owned at least half dozen CF slab CRKs and have never had one off center. I know I have read it is a thing but I have never personally seen it.
 
I own a small Inkosi CF and it’s perfectly centered. I’ve had it for about 12 months and it never had any problems with centering or anything else.
 
Thanks for the input. It appears that while blade centering issues might exist they are the exception rather than the rule.
 
Don M said:
Thanks for the input. It appears that while blade centering issues might exist they are the exception rather than the rule.
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That and while CRK will probably acknowledge that slight off centering is within spec, if it was touching the scale or rubbing they'd fix it.
 
If you're worried about a little (and I mean a little) off centered blade, then get a carbon fiber inlay (BladeHQ exclusive) and have the best of both worlds.
No need to thank me.:rolleyes:
 
My carbon fiber small 21 has been carried almost daily for nearly 4 years, and is still dead centered! It shares a pocket with another knife and has been sharpened more times than I can count, so it is not just going along for the ride:)
 
I had owned one which I had bought on the exchange. It was disclosed as off-center but the seller "forgot" to disclose that it was because he had disassembled and in the assembly process, a washer (newer perforated type) was pinched. Obviously I found out when I had opened the knife and would not have been cool to dispute over a few BS $s, so off to Boise it went and about 8 weeks later it came back dead centered with new washers. I have since let go of that knife but despite the fact that CRK does state that because of the weight differences between the CF scales and the Ti scale, there may be an issue ion the long term for the blade to shift off center toward the lighter CF scale, my former's knife's unfortunate off centering was not because of that potential issue. Hope that the helps.
 
I have owned 2 CF version both large, Clip Point and Insingo and both were dead on center. But as mentioned above the difference in materials is the most likely culprit.
 
Mine was dead center and now Its not. It's not rubbing yet but pivot is tight so it's strange AF. But as mentioned above it happens. Large sebenza 21 cf.
 
mt666tm said:
It's got something to do with the uber tight tolerances and the difference in material properties from the Ti to CF sides. No way to get them as close as if both sides were Ti.

They may get a C-hair off center over time, but I doubt it'll ever get so far off that the blade would contact the scale or impede function. I would not let this be a deterrent from buying a CF model.
Click to expand...

I bought a used Knife Art Edition, Large 21, it was a hair off, close on the Carbon fiber side. It is still flawless but it drove me crazy so I light micro'polished the Titanium Side bearing and it creat just enough to get it almost Dead Center, It Opens and closes amazing and I just love Carbon Fiber, All my motorcycles for the last 20plus years get a new Carbon Fiber exhaust the moment I get them home, so far almost all my knives are Titanium with a "show side" in carbon fiber. Love It!
 
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