- a flexible giant
The feeling of deja vu is strong in this case. For those who think they recognise this knife, they are not entirely wrong. I have previously presented and reviewed a knife from Al Mar that is very similar to this one. It is, of course, its close relative B-21 that I am talking about. With that in mind, it is not so far-fetched to see where the name of this knife comes from, as one of the few things that sets them apart is the ability to fold in half. Thus, this one is called the B-21 Folder.
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| Al Mar B-21 Folder |
Behind the name "B-21" lies a thought, as it stands for Bowie for the 21st century, a modern interpretation of an old concept, in other words. It becomes especially modern in this case as it has been translated into a folding knife format. The man who designed this knife is, of course, Kirk Rexroat.
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| The relationship is not difficult to trace. |
His name can also be found on several knives from Al Mar. It started early, back in 1997, when he made a custom knife called the "Havanna Clipper" for Gary Fadden, who was the owner of the company at the time. Since then, Rexroat has also designed knives such as the Back Up I, Back Up II and not least the Payara. The latter has been released in a new version that I reviewed.
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| Kirk Rexroat has also designed the folding version of the B-21 |
Short version: Al Mar B-21 Folder, a robust and versatile folding knife intended to replace a fixed blade knife
Blade
Like many other details, this blade is reminiscent of its fixed blade relative. It is based on a modified Bowie blade, which is basically a clip point. But here the description is somewhat more extensive. The Bowie part consists mainly of the boldly cut tip, but its characteristic false edge.
The modification is found in the clear bend found in the blade spine, a detail that is also reinforced by the thumb ramp that leads to it. They create more ways to grip the knife.
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| The modified Bowie blade is also found in the folding knife version of the B-21. |
The fact that this is a relatively large folding knife is reflected in the dimensions of the blade. It is 95 mm long and 35 mm high. The thickness is 3.3 mm, which does not feel excessive considering the knife's intended use as a "tactical"/outdoor knife. But by all means, it would have been durable enough with a 3 mm blade as well. What sometimes seems to be overlooked is that the height of the blade, of course, contributes to the strength in everything except when you use your knife as a crowbar.
One thing that contributes to the robust impression is the choice of steel. D2 is not an extraordinary material, and sometimes I don't like it, as I have had problems with corrosion with several knives. Sometimes D2 is considered "semi-stainless", but I don't know if I agree with that.
But in this case, the choice feels correct as it is a steel that can withstand a lot of abuse. It doesn't chip easily, and it can be made really sharp. Given that the hardening is good, it also keeps its sharpness for a long time. The factory edge on the B-21 was also very good, sharp and relatively even.
The steel has been given a satin finish, the shiny surface of which helps to keep rust away. The marking is otherwise quite discreet with Al Mar's new logo, the one without the red in it, on one side and the model name, designer and country of manufacture on the other side. A lot of information, but in a small format.
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| The steel used is D2 |
Then they have chosen a fairly steep edge and a blade that certainly has a high flat (not full) grind. The primary edge is 25 mm high. In addition, the knife is a full 0.7 mm thick behind the edge to be extra durable.
Of course, this affects how the knife works in different materials. It is clear when you use the knife that it is more intended as an outdoor and perhaps hunting knife than for typical EDC tasks. It is not the world's best cardboard killer, but it was not intended as such either. At the same time, it should not be exaggerated; it is all about nuances. A sharp edge and a sturdy handle mean that it is just work, and also longer than most, given the good ergonomics. So it is possible to shred large amounts of cardboard, just not as easily as with the best knives for the purpose.
It works significantly better in meat. I'm not a hunter, but I've tested it on mixed pig parts, read chops and loins to get an idea.
Wood in different conditions, fresh and dry, as well as rope of different types, are other things that this type of knife has to handle well, and it does. It's among the most common things you come into contact with if you're outdoors in any form.
Then the tip is a joy. Sharp enough for small jobs and strong enough not to break. The geometry also means that it penetrates, for example, thicker plastic in an excellent way. Small jobs I often perform are minor "surgical procedures" on my own person in the form of picking metal chips out of my hands. As a knife thrower, this is a frequent occurrence. This tip also works for that.
Handle
The eye-catching blade is matched by the handle. Here we have a bold, blue anodised frame and a generally sculptural appearance.
This, in turn, results in a handle with many details worth noting. We can start by stating that it has both substantial protection against slipping forward and backwards. It is noticeable that Rexroat was looking for a handle that worked for various tasks. At the front, a finger guard is found while the upper part forms a thumb ramp. Both braces and a waist belt, in other words. In the same way, the handle swells at the back into a "duckbill" that prevents the user from slipping backwards when cutting.
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| The handle is both spacious and flexible |
The sculptural look comes from the G10 side panels that are heavily shaped. At most, they are around 4.5 mm thick. But they are both arched and thinned out at the front. The entire knife is 15 mm thick at most and only 6.5 mm at least, which is almost unique. But there is a subtlety to it that I will return to.
The length of the entire handle when the knife is folded is 130 mm, and the usable space for the fingers is 90 mm. Although it is true with modification depending on how many ways there are to vary the grip. Then the rear part of the handle is designed so that if an extra centimetre is needed, if you wear thicker gloves, for example, that also works.
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| The back shows the blue anodised frame and a steel back spacer. |
The construction is somewhat special compared to most folding knives for a couple of reasons. One thing that stands out is, of course, the blue colour used as an accent colour. But what is more unique is how much of the frame is in contact with the blade around the pivot screw. This gives a significantly stiffer and more durable folding knife laterally. A detail that is often overlooked when making more stable folding knives. Most often, manufacturers only talk about lock strength.
Speaking of strength, it can be added that the frame is not lightened in any way. One of the things that, together with the dimensions, the steel back spacer and the many screws, of course, contributes to the high weight. By many screws, I mean that the sides are attached with three small T6 screws per side, but these are not the ones that hold the frame together. There are three more equally small screws per side in addition to the pivot screw for that. The pivot is a solid T10. But that means that no fewer than thirteen screws can be found in this knife, even though it lacks a clip.
Speaking of strength, it can be added that the frame is not lightened in any way. One of the things that, together with the dimensions, the steel back spacer and the many screws, of course, contributes to the high weight. By many screws, I mean that the sides are attached with three small T6 screws per side, but these are not the ones that hold the frame together. There are three more equally small screws per side in addition to the pivot screw for that. The pivot is a solid T10. But that means that no fewer than thirteen screws can be found in this knife, even though it lacks a clip.
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| The balance point is found just behind the finger guard. The B-21 is really comfortable in all common grips... |
The shape described above makes for a very versatile handle. It naturally fits perfectly in a hammer grip, which would be strange otherwise, since it is a sturdy folding knife, and that is the grip that provides the most power.
The B-21 Folder can then be held in two variations of a sabre grip, both with the thumb on the thumb ramp but also with the index finger just behind the edge on the flat part of the blade, and with the thumb in the recess on the blade spine. This allows you to get significantly closer to what is being cut, which is excellent for detail work.
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| ...and a few more. In fact, this handle works in all different grips |
The shape described above makes for a very versatile handle. It naturally fits perfectly in a hammer grip, which would be strange otherwise, since it is a sturdy folding knife, and that is the grip that provides the most power.
The B-21 Folder can then be held in two variations of a sabre grip, both with the thumb on the thumb ramp but also with the index finger just behind the edge on the flat part of the blade, and with the thumb in the recess on the blade spine. This allows you to get significantly closer to what is being cut, which is excellent for detail work.
In addition to all the other possibilities, this knife is also excellent for holding in a reverse grip. Not least, the flat back end of the handle makes it easier to hold the knife with the edge down/forward. If you pull towards you in a reverse grip with the blade up, both the thickness and length of the handle are of great help.
Opening and Lock
The B-21 Folder opens with thumb studs, which is quite unusual, only in one way, and that is slowly and stylishly. That is, the knife does not have any ball bearings, and the blade cannot therefore be flicked out. It is completely in line with the area of use. No bearings that can accumulate gravel and dirt unnecessarily.
You can open the knife with two hands if you feel like it, but only a little of the blade sticks out, so it is a manoeuvre that is not entirely easy.
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| The thumb studs do what they're supposed to, easy to access and with good leverage. |
The thumb studs are quite large in size, which makes them easy on the thumb. To increase the grip, they have a pattern on the top. They are correctly positioned to provide leverage and make the opening smooth. They are also not so high that they stick out too much. Something less important on a knife that is not carried with a clip in a pocket. But you still don't want protruding parts that can get caught on things.
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| This is a heavy-duty liner lock with a lock bar that is almost hidden. |
Given that the frame is around 1.5 mm thick, the liner lock found on this knife is also sturdy. It is very well made and has never failed to lock up.
When the lock bar is in place, it holds the blade very stable. There is no play in any direction, not even if the blade is provoked. The only peculiarity is that the lock is quite difficult to release. There is a recess to facilitate access, but it is cramped, and the lock bar has no pattern to prevent your finger from slipping off.
Now I think the design is like that on purpose. I have come across a similar idea in a knife from Spyderco, namely the Bradley Folder 2. What it is about is that you "hide" the lock bar so that you absolutely cannot access it, even if you perform twisting movements with the knife. Something that is otherwise a theoretical risk with liner locks.
To Carry
Then there was the elephant in the room. Or maybe not, because it's not hidden. Just an elephant then. The B-21 Folder is built to replace a fixed-blade knife, and of course, it shows. As previously mentioned, it is thirteen centimetres long and one and a half centimetres thick. Yes, and then it's over four centimetres high too. If you sum it all up, you get a lot of volume.
But it's still the weight that stands out. This knife weighs in at 195 grams. A heavyweight for a folding knife.
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| A sturdy leather sheath is included to carry the knife in. Here I have wet-formed the leather for a better fit. |
For these reasons, it was sensible not to equip the B-21 Folder with a clip. It would have been too bulky in the pocket. Of course, the trade-off is better ergonomics with protruding metal parts out of the way.
Instead, this knife comes with a classic "pancake" leather sheath. It is made of strong, light leather and is well-stitched. On one side is a classic checkered pattern, and on the other is the Al Mars logo embossed.
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| This is what the sheath looks like when it's just unpacked from the box |
Dock rekommenderar jag att du våtformar fodralet efter kniven. Att naturligt slita in det till en bra passform lär ta evigheter med den läderkvaliteten. Fodralet har hällor för bälten upp till 45 mm bredd.
To Conclude
Since I was very fond of the fixed blade variant, I felt like I had to see if I appreciated the folding version of the knife as much. And I do, maybe. I have to admit that I am a little ambivalent. Everything that is the strength of the knife is also its Achilles heel. Let me explain!
After all, the Al Mar B-21 Folder is intended to replace a fixed blade knife, something that both the dimensions and the belt sheath tell us about. We have a folding knife with a sturdy blade but an even sturdier and more versatile handle. The materials are chosen to be durable, and this is also reflected in the construction. This is evident, among other things, in the fact that the strong steel frame has a large contact surface against the blade for increased lateral strength and that the frame is not lightened.
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| B-21 Folder and a coffee in the spring sun |
Functionally, it is a very good knife. The blade shape is usable for most things with a good tip, just enough belly and a bit of a straight edge to work with. There are not many tasks that cannot be done with that equipment.
Then, as I said, you have a handle that allows for everything from a very powerful hammer grip to a very delicate pinch grip. It is a bit of an art to achieve that, something that Rexroat has succeeded in.
Overall, it is therefore a very good handle. I have one small complaint, however, and that is the implementation itself. The corners at the recess that facilitate access to the lock bar are too sharp, and the same can be said about the inside of the frame. Something that I chose to round off myself.
But all these advantages come with a price. The B-21 Folder is naturally a large and heavy knife. It is a folding knife that is not a pocket knife. Something that I said explains the included sheath. Then it can be added that when using a sturdier winter jacket, I still carried it at the bottom of a pocket. Otherwise, it mostly resides in bags. The way of carrying it is a bit polarising; however, not everyone likes belt sheaths for folding knives.
If you are one of those who do not see this as an obstacle, this is an excellent choice from Al Mar.
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| Al Mar B-21 Folder in all weather. Here, during a hike last fall |
The B-21 Folder is a very good knife. Versatile and also very well built. It is made in Taiwan, by the way. So if you are looking for a robust knife with a focus on hunting and outdoor activities in a folding format, this is a very good candidate.
Specifications:
Length Overall: 226 mm
Length Closed: 130 mm
Weight: 195 g
Blade Length: 95 mm
Blade Thickness: 3,3 mm
Blade Steel: D2
Handle: G10
Lock: Liner lock
Produced by: Al Mar, made in Taiwan
/ J - looking for heavy hitters
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