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Reviews

Gear reviews including knives, pens, and lights. 

Filtering by Tag: s35vn

Chris Reeve Knives Sebenza 25

Nick Clayton

I have a sorted past with Chris Reeve Knives. A bad experience with their warranty almost made me swear them off forever. However, thanks to the Sebenza 25, I came back around. I'm glad to own a CRK piece again as I do believe he still sets the standard for production quality in the knife industry (even as companies like ZT continue to challenge that title). 

The 25 is a bit of an amalgamation; a hybrid of design and feature of two other CRK knives. The first being the venerable Sebenza 21 and the  second the aggressive Umnumzaan.  The 25 shares its profile and overall aesthetics with the Sebenza family but the guts of the knife are all Umnum.

The blade profile is a classic drop point but differs a bit from the 21 in it's execution. The stock used is thicker than the 21 and the same as the Umnum. This gives the 25 a bit more heft on the blade as does the grind.

The grind on the 25 is what CRK refers to as a high hollow grind. If you did not measure it, you would swear it was a flat grind. I prefer this blade to that of the 21 or the Umnum as it give the classic shape of the Sebenza but more to work with. The blade steel is CPM-S35VN, a great edc powdered metal steel. S35VN was actually developed jointly by Crucible and Chris Reeve. 

The 25 comes standard with double thumb studs. This is a nice feature for all the lefties out there and they are indeed easily accessible from both sides. The jimping cut into the blade is sharper than that of both the 21 and the Umnum but, again, I prefer the 25's as it provides excellent grip without any discomfort. The pattern is a repeating set of threes that is a nice touch. 

The 25 I have sports the micarta inlays. I like the extra width it provides as well as the break up of solid titanium that would otherwise dominate the flat surface. The handle shape is unique to the 25 in that it includes two finger grooves. I find that they fit my hand well and do not cause any hot spots during use. The handle slabs are also thicker than the 21 which, in conjunction with the thicker blade, give this knife a much more robust feel in hand than the 21 or even the Umnum in my opinion. 

Contacting the blade tang is not raw titanium but a ceramic ball. This ball also acts as the detent for the knife. This system was first introduced in the Umnumzaan and, from my experience, is a superior design than raw titanium. I don't have to worry about the soft titanium wearing against the hardened steel. 

The 25 is an incredibly smooth, strong, and beautiful knife from Chris Reeve Knives. If you are on the fence, you might at well go ahead and get one (you can always sell it later and not lose too much off what you payed). 


Zero Tolerance ZT 0550

Nick Clayton

The Zero Tolerance 0550 is a legacy design. The 0550 was the first of many collaborations between Custom Knife Maker Rick Hinderer and Zero Tolerance Knives. Based on a design Rick calls his Camp Knife, the 0550 is a great heavy duty folder. The 0550 was the start of a relationship that continues to bear fruit to this day. Knives that include the 0560 and the Kershaw Cryo. The 0550 of today has undergone a few iterative changes that refine the original design. Here is a link to Amazon where it can be purchased. 

The blade shape of the 0550 is a classic drop point profile. A high flat grind meets a large swedge that starts about halfway down the spine and terminates a half inch from the tip. This adds a visual flair while maintaining cutting geometry. There is a row of chunky jimping on the spine that doesn't add a lot of traction but is visually appealing. The blade is 3.5 inches long which is right in the sweet spot of my preference for a pocket knife. I've had a gen 1 0550 and this model (gen 3) has a stonewashed blade where the previous generation had a blasted finish. I prefer the stonewash as it will show less marks with use. 

The blade steel is  CPM-S35VN. S35VN. Developed by Crucible Powder Metals in conjunction with Chris Reeve Knives, S35VN is An evolution of the venerable S30V steel. It features similar edge performance to S30V but with the slight reduction in vanadium (3% vs 4%) and the introduction of 0.5% niobium. This change in composition produces a steel that has similar wear resistance to S30V but has better toughness and is easier to machine. In my own use, I have found S35VN to chip far less than S30V and be easier to service. A win-win in my book. This, combined with it's ready availability and reasonable cost,  makes it one of the best EDC steels on the market. 

 

See here for Crucible's Data sheet on S35VN 

The handle on the show side is G10 and titanium on the locking side. The G10 has machined grooves running at a slight angle vertically. They are useful for traction and also break up the otherwise blank surface of the black G10. All the edges of the handle are nicely chamfered  to avoid any sharp angles. For a while, there were several companies selling aftermarket scales for the 0550. Since this model is older now, they are becoming harder to find.

The titanium lock side is thick and very stout. The Ti sports a blasted finish that I like. Even though blasted Ti scratches easily, it adds character to the knife over time. The lock face has been updated with a steel insert that contacts the blade tang. This is par for the course for all new ZT frame lock knives and a good improvement over the raw Ti. One change from the gen 1 is the lock bar relief cut. This generation has moved the relief cut to the outside of the knife. I don't know what effect this has on the lock but I think this makes it easier to unlock and may also be more secure from my observation (The lock bar travels at slightly less of an arch to meet the tang when the cutout is on the outside). This knife also features the Hinderer Lock Bar Stabalizer (LBS). The LBS prevents you from accidentally pushing the lock bar too far out and ruining the lock. I personally have never had that happen but I definitely understand the purpose of the design. In fact, Rick cam up with the design after accidentally bending the lock out on a knife.

Overall, I really like the 0550. I like it much more so that the larger more expensive 0560. The size and balance are great on the 0550. It is also one of last remaining knives that ZT makes that is not a bearing flipper. This knife uses standard phosphor bronze washers but you could easily think it did have bearings; this thing is smooth. I thoroughly enjoy owning this knife and I recommend anyone to check it out.