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Rockstead Knives

Rockstead RYO Review

by Andrew Gene 2 Comments

The RYO is the latest folder from Rockstead, coming after their futuristic SHUN collaboration that was the work of Belorussian designer Dmitry Sinkevich. The SHUN was a tangent from the company’s previous aesthetic sensibilities, carrying much more futuristic lines in a larger form factor. Rockstead’s unmistakable mirrored blade grind and stylized fuller aside, the knife was definitely something more akin to other Sinkevich designs like the ZT 0452CF or his Shirogorov collaborations.

Rockstead RYO Review
Buy Rockstead Knives at BladeHQ

The RYO design is a redirect back toward Rockstead’s other models, with a distinctly Japanese look that draws inspiration from an iconic friction folder. While most models reflect sword patterns, the RYO references the Higonokami (Higo for short) resulting in something similar to a modified wharncliffe, in Western cutlery terms. The blade shape is paired with an undulating handle texture reminiscent of waves, or in this case maybe black raku ceramics or “Japan Black” lacquerware. The name RYO translates to “good”. From my research it can be used to describe something of superior quality or character and is also used as a persons name.

As a side note, it might have been appropriate to call the RYO the HIGO however, Rockstead already has a knife named that. Although claiming the name, the model carries it in spirit only, and does not share a similarity in blade style.

Rockstead RYO

General Dimensions and Blade Details

Although the Rockstead RYO has a foot in the past, it’s clearly a modern knife showing off a finished product that is only possible through a combination of modern machining and the latest high-tech materials. The over-all length measures 7.716” (196mm) with a 3.125″ (79mm) blade, and a weight of 4.37 oz (124 g).

Rockstead RYO with Box

New to the folding knife collection, the RYO has a “concealable” clip design. We are also seeing a titanium handle, rather than the Duraluminum that’s has been used in the past. This isn’t that surprising as most of the newer, all metal handles (as seen in the SAI and SHUN) are full Titanium.

The 3.15” (80 mm) blade is made from one of Hitachi Metal’s flagship cutlery steels, ZDP-189. ZDP-189 boasts rather extreme specifications with a chromium content at 20%, nearly double the 10.5% needed to consider it a stainless, and a carbon content of 3%, just over four times the 0.7% needed to be classified as “high carbon”. The full specifications are as follows:

Carbon Chromium Molybdenum Tungsten Vanadium
3.00 20.00 1.50 1.50 0.10

Such impressive specifications are reached through a powder metal technology which helps to avoid the uneven (segregated) carbide micro-structure caused by cooling steel into a traditional ingot. During the process, molten alloy is pushed through a nozzle where it meets a high pressure stream of air. At contact with the compressed air, the molten metal rapidly solidifies creating a tiny, near-to segregation free, sphere-like particle. Because the cooling is so fast, the component elements are fixed in place with a more even micro-structure. The powdered batch is then mixed and sealed into inert-environment containers to avoid unwanted reactions. Finally it’s Hot Isostatically Pressed (HIP), trapping all of the ideal properties, evenly into place.

With such generous levels of elements that make for a high-performance steel, ZDP-189 is able to reach an incredible finished hardness and take an equally impressive edge. Rockstead measures each piece and the small dimple left from measurement is proudly displayed on the blades ricasso. The hardness of this particular RYO measures 67 RC.

While seemingly the end goal for a steel, the result does compromise other desirable attributes. The first is accessibility. Using ZDP-189 and finishing it to these standards increases cost. Secondly, such a high hardness makes the steel more brittle since it lacks any real ductility, limiting application to lighter duties.

Rockstead RYO

This steel is chosen to support the grind, and as on all other Rockstead knives, the grind is nothing short of amazing. Rockstead defines the convex, zero geometry as Hon-zukuri which is traditionally reserved to describe sword patterns. The meaning loosely translates to “base style” and is Rockstead’s go to configuration. On other models they also offer flat grinds that include a secondary bevel as seen on the TEI-S DLC.

I’ve had the opportunity to handle three Rockstead knives and the mirrored finish is perfectly executed on all, only showing distortion from the curvature of the convex shape or on the compound angles that radius the belly of the blades. Because the mirrored finish runs right to the edge, the cutting performance is outstanding with a sharpness that seems to pass effortlessly while in use. This is partly because the blades are pretty much perfectly symmetrical and there isn’t any tooth to the edge that can catch on the material you’re cutting. While pretty legendary for a knife; as mentioned before the edge is fragile and it will micro-chip under normal use. This is where questions of practicality comes into play. Your flawless blade can be maintained – if you use Rockstead’s paid sharpening service. Otherwise you can do the job yourself at the expense of the perfect finishing.

Rockstead RYO Handle

As for the profile, the Higonokami-like pattern is very useful. The slightly curved edge is excellent for everyday tasks while the tip excels at fine work over something like a drop-point. For detailing Rockstead’s stylized fuller gives the blade an animated, vigilant stare while the media blasted flats provide a contrast that intensifies the polished grind.

Handle, Ergonomics, and Pocket Clip

The fully sculpted “3D machined” handle of the knife is very comfortable. The inner edge has a series of shallow finger grooves that conform to your hand nicely. At 4.566” in length you get a full grip for average sized hands. The area of use is extended by a deep choil that meets a curve toward the front of the handle, allowing you to choke up for more control. Added grip and tactile feedback is helped along by jimping on the clip’s back and a double row of jimping along the handle’s spine that’s continued by a run onto the blade’s thumb pad. There’s also a small swatch on the choil so you know exactly where you’re at when your finger is near the heel of the edge. Jimping mission accomplished.

Rockstead RYO Jimping

The cross cut ridges add a significant dress factor to the polished handle, catching the light and defining the overall form. As you hold the knife in your hand, highlights roll across the surface giving the grip a jewel-like appearance that’s amplified by the dark, glassy DLC (Diamond Like Carbon) coating. The same reflective qualities that give the handle its presence also create some challenges. With so many surfaces and such a tricky polish, any small marks or areas of unevenness during the process tend to be exaggerated by the DLC and under very close inspection, some are visible. This can only really be observed when the knife is spotlessly cleaned up and under good light as was the case when producing the video overview. Also, it’s an epic finger print magnet. From one perspective I’d like to see the handle as immaculately rendered as the blade and from the other I appreciate the ambition.

An area where I definitely feel the handle could be improved however, is weight. Milled out pockets on the inner scales could trim fat from the 4.37 oz. While this won’t bother some and others will equate weight with value, I prefer a lighter folder, and sub 4 oz would feel better with this smaller form factor.

Rockstead RYO Thumb Studs

For deployment there are two ambidextrous thumb-studs. While polished, they have a conical shape that narrows at the base, sit high and are exposed by a handle cut-out so you can easily and repeatably use them.

When opened the blade is held solidly by a button lock. Most button locks I’ve handled have a small tick of movement that eventually settles in, and this seems to be the case with the RYO. As of now, after handling the knife for some time, the lock-up feels totally solid and without play. Although seating confidently under significant spring tension, the action is smooth and without stickiness. When unlocking, the polished button head feels good under your thumb.

Normally, a button lock’s plunger serves double duty and is also used to hold the blade closed. In many cases the tension in the closed position is light allowing the blade to more easily fall out of the stowed position than something like a liner or frame lock. With the RYO, Rockstead has smartly added a separate detent that holds the blade closed, so the tension can be dialed in independently. As a small gripe, I’m not overly fond of the high pitch click the knife makes when overcoming the detent, but in a luxury item I tend to split hairs. Regardless of any criticism, the sum of parts of this button lock equals one the nicest I’ve handled to date.

Rockstead RYO Button Lock

Rounding out the details there is what Rockstead calls their “concealable” pocket clip. This is primarily an ergonomic feature so you don’t feel the clip when cutting. The integration is nicely executed and works visually when the knife is both open and closed. To reveal the clip, you manually push on its end which sits slightly proud when hidden. Although the small tab is visible, you don’t really feel it under normal use. The clip sits on a larger base that supports it, for a smooth yet robust feeling action. Because the clip is oriented to the back of the handle, its attachment point is best at your pocket seam (as opposed to along the opening) and works better with thinner fabrics. The fact that the clip is machined rather than stamped and bent, makes for a strong tension and, because of the orientation, the knife can twist to the side with thicker materials. I guess this isn’t really a jogging pants type of knife anyway.

Rockstead RYO Pocket Clip

Rockstead RYO Pocket Clip Concealed

Apparently this concealable clip design infringes on a patent filed by knife maker Joseph Caswell, who has a design called the EDX with a clip that automatically changes position with the action of opening and closing the blade. As such Rockstead has had to license in order to stay above board. As an additional carry option there is a lanyard hole that is discretely milled into the pommel.

Rockstead RYO Lanyard Hole

Rockstead RYO Review – Final Thoughts

From the material choices through to the finished functional design, Rockstead personifies the ethic of Japanese bladesmithing. An approach where there is a thirst for the best technology and materials while still respectfully integrating knowledge and concepts from the past in balanced measure. Rockstead’s ability to harmoniously combine historic patterns with contemporary features is unique to the brand. While costly, these knives are truly distinct, no small feat in a market that is increasingly more saturated. The RYO is certainly “good”.

Buy the Rockstead Higo at BladeHQ
Rockstead Higo
From: BladeHQ

Editor: I recommend purchasing the Rockstead RYO at BladeHQ. Please consider that buying anything through any of the links on this website, including Amazon.com, helps support BladeReviews.com, and keeps the site going. As always, any and all support is greatly appreciated. Thank you very much.

Filed Under: Collectable Knives, Folding Knives, High End Pocket Knives, Rockstead Knives Tagged With: Button Lock, Dmitry Sinkevich, titanium, zdp-189

Rockstead Higo Review

by Dan Jackson 9 Comments

Today I’ll be reviewing an expensive knife. There is no way around it. The Rockstead Higo retails for the better part of $1000. It’s insanely expensive, and it’s taken me the better part of 10 years of writing about knives to work my way up to purchasing one. I’ve considered it before, but always had something else I’d rather spend $800 on. Like food, rent, and child support. But recently I got my priorities straightened out and purchased a Rockstead for review.

Rockstead Higo Review
Buy the Rockstead Higo at BladeHQ

So it may come as a surprise to hear that the Higo is actually one of Rockstead’s least expensive offerings. You can easily spend $1,500 to $3,000 on one of their knives.

The Higo is one of their simpler, more utilitarian models. Relatively simple duraluminum handles and a single stand off house a beautiful, smoky black DLC coated blade. And it’s not just any blade, it’s Rockstead’s beautiful “HONZUKURI” double convex blade shape brought to a flawless mirror polish. Yes, it’s high time we reviewed a Rockstead, and examined this knife in all of it’s expensive glory. By the way, I am writing this review from a cardboard box.

General Dimensions and Blade Details

The Higo has an overall length of 8.5″, a 3.5″ blade, weighs 3.6 ounces and is made in Japan. It’s a larger knife but could be EDCd if you like the idea of daily carrying an ultra high end pocket knife. I think it is one of Rockstead’s more staid models, but personally, I wouldn’t EDC this thing. Not only is it too expensive for me to use without feeling guilty, I have major reservations regarding how I would sharpen the knife. I’ll comment on that further below.

Rockstead Higo

The Higo comes with a long drop point blade. The tip on the knife is fairly high, and it provides a rather abrupt belly. The blade is saber ground, and there is a hole in the flat of the blade with a short milled fuller. I am not sure if that’s for decoration, or is part of the manufacturing process. I never think too hard about that because my eye is inevitably drawn to the beautiful mirror polished primary bevel.

As an aside, this polished blade is a bear to photograph. My photography has never been great, but I apologize for the especially schlocky photos accompanying this review. I did my best to keep my mug out of the photographs, but there are still all sorts of reflections in the shots showing the blade.

Rockstead’s process for finishing the blades this way is time consuming, and labor intensive. This is part of the reason why Rockstead knives are so expensive. Rockstead does a reasonable job explaining the process on their website. Apparently someone hand sands these blades starting at 400 grit going all the way up to 2000 grit. Then additional finishing work is done on the knife through some proprietary processes that are well beyond my pay grade as a lay person.

The net result is the most beautiful blade I have ever laid my eyes on. The grinds are beautifully crisp. The machining is outstanding. And the mirror polish is flawless. The net result is stunning. There is nothing else like a Rockstead blade.

Rockstead Higo Blade

Rockstead offers the Higo in two blade steels: a DLC Coated YXR7 version (shown here) or an uncoated ZDP-189 version. YXR7 is a high speed tool steel manufactured by Hitachi. YXR7 has the enviable combination of being tough, but also being able to be heat treated to a high hardness. Here is a link to the zKnives data sheet on YXR7.

Rockstead states that it’s the durability of the YXR7 that allows them to put an ultra thin 3 micron thick coat of DLC over the blade. Paired with a less shock resistant steel, the DLC coating would crack like an egg shell. But when paired with YXR7 the shock is dissipated and you are left with an otherworldly blade.

Each knife is individually checked for hardness, and Rockstead reports that on the information card that comes with the knife. My particular knife was heat treated to 65.2 HRc. Impressive.

Rockstead Higo Closed

OK, this is normally the part of the review where I comment on the real world performance of the knife after extensive carry and use. That never happened with the Higo. It’s just too nice of a knife for me to get down and dirty with.

Furthermore, I’m concerned that if I used the knife I’d be unable to sharpen it. Especially this DLC coated variant. With the ZDP-189 version you can probably maintain the edge with careful stropping. But here, only a teeny tiny bit of the edge is exposed. The rested is coated in DLC. How the hell do you sharpen this thing? Rockstead offers a “free sharpening service” but you need to ship the knife back to Japan for that. Sorry guys, but I didn’t want to go down that path with this knife.

I will say I’ve been to the Rockstead booth at Blade Show a few times and they had many samples available, and they would cut phone books and rope with the knives at the show. They can certainly cut, and from what I understand they hold an edge unlike anything else thanks in part to the insane hardness and unique blade geometry.

But I can’t speak from personal experience. Instead, I’ll embed a video from Rockstead showing some of their performance testing:

Handle, Ergonomics, and Pocket Clip

Compared with the magnificent blade, the handle is a little less interesting. It’s still beautifully machined, but lets face it, few things can stand up to the blade of a Rockstead. Here we have black anodized duraluminum handles. A pleasant wave pattern has been milled into the handles. Execution of the handles themselves is great, but one area leaving me wanting a little more is with the hardware. The hardware almost appears like cheap pot metal compared to the blade. I’d love to see some decorative hardware or polished hardware to match the blade. As it stands, it appears more like an after thought. At this price everything needs to be special.

Rockstead Higo Handle

I have no complaints in the ergonomics department. This simple and straight forward handle design. There is plenty of room, and an absence of excessive curves and ‘ergonomic features’ means that the handle will be comfortable for most people. That said, you do get light jimping on both the top and bottom of the blade, toothier jimping on the handle, and a finger choil. All of this stuff has been exercised with a degree of restraint to the point where it all plays in the background. It’s the ergonomic equivalent of muzak. Present, but hard to register unless you pay close attention.

Rockstead Higo

The pocket clip is downright primitive compared to the rest of the knife. It’s a DLC blackened spring style clip, mounted high on the handle for deep carry with a single torx screw. There is nothing wrong with any of this, but it is crudely stamped “MADE IN JAPAN”. Not the end of the world, but not the most elegant solution either. Given the attention of detail lavished on this blade I would have expected a little more.

The good news is that the pocket clip works great, and the knife carries well. It’s a long knife, but thin and lightweight, so you don’t notice it much. The pocket clip has good spring retention, so it keeps the knife planted in place, and it all but buries completely in your pocket. Not bad, but not amazing either.

Rockstead Higo Pocket Clip

The clip is also a fingerprint magnet. Much like the blade.

Deployment and Lockup

The Higo primarily makes use of dual thumb studs to get the blade open. The thumb studs are prominent, and the blade is easy enough to open with either hand. Additionally, the exposed tang when closed gives you the option of a “front flipper” of sorts. You can’t actually flip the blade open, but you can get the blade mostly open with this faux flipper.

Rockstead Higo Spine

The blade rotates fluidly on generous phosphor bronze washers. It isn’t a fast deploying knife, but it feels purposeful.

The frame lock of the Higo engages with a soft click. It’s an aluminum framelock with a stainless steel lockbar insert. I think it is interesting to note that the lockbar insert has also been given the DLC treatment. Little details like that are good to see. Frankly I expect them on a knife this expensive. Lockup is a solid 50% and there is zero blade play of any kind.

I struggled to find a good knife to use for the size comparison section. The blade of the Higo is so tough to photograph, that I ended up choosing the Zero Tolerance 0450CF. The matte DLC blade on the 0450CF made it possible to get a workable photo.

Rockstead Higo vs. Zero Tolerance 0450CF

Blade centering is absolutely perfect on my knife. Once again at this price point I would expect nothing less.

Rockstead Higo Review – Final Thoughts

On one hand the Higo is a stunning knife. The blade is unlike anything else I have reviewed. It’s an otherworldly work of art. You simply won’t find anything else like it on the production market. That beautiful blade is combined with an elegant handle. It is a juxtoposition of Japanese elegance and their fanatical pride in what they do. Rockstead has taken the production pocket knife to extremes few of us would consider. In these ways the Higo is a truly special knife.

On the flip side I don’t think this is a particularly practical knife. It’s so expensive I’m hesitant to use it. And if I were to use the knife, it would be damn near impossible for me to sharpen it. Perhaps if I selected the non-DLC coated variant I could strop this thing, but I don’t know how I would sharpen this DLC coated blade with its impossibly small microbevel edge. The only answer is to send it off to Rockstead. They will sharpen it for free provided I can prove I’m the original owner, but I would need to ship the knife to Japan at a considerable expense and risk.

For these reasons I cannot recommend this knife as a daily carry, unless you are a talented sharpener and willing to use a near $1,000 folding knife. Most people won’t do that, and of the few that will actually purchase a Rockstead Higo, I suspect they will treat the knife like I have: gingerly. With so many great $50-200 folding knives in my collection, the Higo has been relegated to a safe queen and curiosity. It’s a beautiful safe queen, but a safe queen none the less.

Buy the Rockstead Higo at BladeHQ
Rockstead Higo
From: BladeHQ

I recommend purchasing the Rockstead Higo at BladeHQ. Please consider that buying anything through any of the links on this website, including Amazon.com, helps support BladeReviews.com, and keeps the site going. As always, any and all support is greatly appreciated. Thank you very much.

Filed Under: Collectable Knives, EDC Knives, Folding Knives, High End Pocket Knives, Rockstead Knives Tagged With: dlc, Frame Lock, Made in Japan, YXR7

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