You do this too many times and now you have a flat grind again instead of the nice convex edge. With so many positive features you might start to wonder if there are also negative sides to the convex edge. As such sharpening a knife with a convex edge by hand feels very natural. Think of how a cave curves in, or think "con-cavity". Sharpening a convex edge is easy and fast with Work Sharp Outdoor Products. Rethinked design bowie style fighting knife - 264 layer raindrop pattern damascus steel blade - 132 layer damascus steel guard ... (not convex) - bocote handle with resin liner and nickel cap. Exactly like a convex edge. Bark River Knives Bushcrafter 1 Expert Review | The perfect bushcraft knife. No perfect single-edged knives can be made if either of 4 pieces, the skill of forging artisan, that of sharpener, that of attaching blades, and that of Honbaduke is imperfect. A convex edge can be put on more than just knives. It won't easily break and with the strong and comfortable handle you don't have to worry about surprises. Some convex knives, even those in the much higher price ranges, have a blade that is relatively thick at the end. In it you can store a couple of practical accessories. In order to create a convex edge, you’ll first need to create a primary bevel that is more narrow than your final bevel. For initial edge shaping my sequence is 50 strokes per side. As such we can offer you ads and content you might be interested in. You can easily use different cutting techniques with this knife. A full flat grind goes from the spine of the blade to the edge. Of course the convex edge has a negative side. Be the first to know about upcoming promotions/specials/giveaways. We also have additional belts and grits that you can purchase direct off our website to create even more customization dependent on your sharpening needs. Initially this knife was only made available for the Japanese market. It takes a lot of periodic work, but produces an excellent shave-ready edge on each of my razors that lasts for months of what would be daily use per razor. Wish someone would invent a field sharpener for convex edges. Because other edge grind types do not have the smooth transition lines along the bevel, they dull faster in use. Often types of steel are used that are meant for other purposes, but also work well with knives. With every angular angle you will run the risk of ending up with blisters. Some prefer to add a lanyard or wrist strap to the end of the handle. At the same time we know that 14C28N can handle its own and is easy to sharpen yourself, without using complicated sharpening machines. In addition, with a convex edge you don't just sharpen the very narrow edge but the entire blade. In the basis the Real Steel Bushcraft Plus Convex comes with a custom-made kydex sheath. A Few Definitions. The heft makes it a lot less likely to chip or roll with intense use. -- James 1:22 (NIV) The convex just seemed more precise to use, though, and it appeared to take less effort to use. A nice medium sized cleaver with etched mountain peaks on old recycled circular saw (8670 tool steel) from a mill in Southern Oregon, just under 3/16th thick, reground, oil heat treated, tempered . Convex edge. That is one way to do it. Otherwise, to resharpen in the field, you have to create a secondary flat grind micro-bevel . But also loops that make horizontal carrying an option, and, with a little practice you can even safely mount it to a MOLLE web. For over 40 years we have been creating industry-leading sharpening tools here in the USA. In this video I show how to sharpen a convex edge and repair a damaged convex edge. This name comes from the convex way the side of the shell moves to the end. Because you don't experience that much resistance the more detailed tasks are easier to carry out. Before we wrote this article we decided to put the Real Steel Bushcraft Plus Convext to the test. In addition, a convex edge is a little stronger, because directly behind the apex (the end of the edge) the knife has a little more material. Okay, yes, it was no longer razor-sharp, but we could still easily cut through a piece of paper. For some this might work, but it doesn't offer you all the advantages a convex grind can offer. Because of its excellent production quality and amazing price the Real Steel Bushcraft Plus Convex is, according to us, a knife every bushcrafter should consider purchasing. If the handle is too rounded you can no longer blindly tell where the edge is located. A craftsman may even use a knife as a wood planer.Geometry Owning a Yakut knife is a learning experience. El Gato wrote:While this topic can be highly subjective to personal opinion, in my experience and for me personally the convex grind and edge, when properly done, makes a very fine working knife in my opinion.However, the key words here are "when properly done", and in my experience this is a rare combination to find. You will therefore experience a lot less resistance when you use a convex edge as when you use a knife with a conventional V-edge. We stropped it a little and it was razor-sharp once again, ready to be used. In addition, this droppoint blade can also easily be used for hunting tasks. What it is: On a convex grind, the sharp edge is produced by symmetric, gently curved surfaces. Both for your chest and the clothes you are wearing. If you were to point a knife directly between your two eyes, this is the shape you would see—just don’t look too close. There are Each side of the blade that has honed an edge is referred to as a bevel. Such an amazing knife enhanced with a convex grind, for such a price, is that even possible? If you use the Ken Onion Edition, the abrasives that come with the sharpener are P120, X65, X22, X4, and 6000 extra-fine. It comes down to this. Forged big chef. When you use a strop to keep your knives sharp, you are in luck when it comes to a convex edge. Laguiole knives: how do you recognize a counterfeit? My question is: on Tormek T7 or T8 is it possible to sharpen a knife that has a construction with a convex profile? A versatile outdoor knife for an amazing price. That is when you realize that the large finger grooves that tell you where you are, are no longer that great. With a traditional, flat sharpening stone, one must repeatedly and consistently follow the contour of a rounded, convex edge with the flat surface of a stone. You might have heard of the term convex grind before, but what is a convex edge? When you sharpen a convex edge you don't use a fixed angle. This is a stainless type of steel from Sweden. Concave – shapes that curve inward, like an hourglass. Do what it says." In Japan convex grinds are more common. The front of the sheath is enhanced with a nylon compartment. But to really put this knife to the test, and don't try this at home, we decided to throw the knife. G10 is a strong composite material made from glass fibres and synthetic resin. Like the glass bottles from the famous coke brand. As such the edge doesn't have a 'shoulder' that could get in the way as you use the knife. I own (400), 1000, 4000, 8000, and 12000 grit waterstones I use to hone (sharpen) my straight razors when stropping no longer maintains a good edge before a shave. Both brands that usually produce knives that end up in a higher price range. Flat grind and other edge types tend to require more frequent sharpening as the knife dulls, therefore decreasing the life of the blade. Joined: Bushcraft knives come in many shapes and sizes. ghostrider07, Jul 18, 2005 #3. hso Moderator Staff Member. Also great! It's the cheapest way to put a convex edge on a knife, using slack-belt sharpening, on the unsupported part of the belt. The powered sharpeners will create the convex edge. Then 10 strokes per side, 5, 4, 3, 2, until you get to 1 stroke per side and alternate sides for 10. It makes the sheath even more versatile. A convex edge may be put on any blade or grind using this method. Sometimes, for instance, you can tell that you are basically dealing with a flat grind with a convex edge at the end. This kind of edge can seem difficult to sharpen. In Japanese a convex grind is also called a hamaguri grind. Blade length: 11.5 cm Many hunters will have little left to wish for with the Bushcraft Plus Convex. The type of steel used is only part of it, the heat treatment is just as important. It could perhaps be a little more difficult to attach a wrist strap, but you often only do this once, while a protrusion will get in your way every time you use your knife. If need be you can also use the kydex sheath separately with a carrying option of your liking. It might not break as easily, but is also not as great to work with. When it comes to bushcraft knives designers always find it challenging to find a balance between nice and round for long-term use, and angular enough to always feel what you are doing. By convex profile I mean that from the edge to the bevel the sides are forged in a convex manner. We offer a selection of knives and our own convex knife sharpening system. ... - extremely thin edge geometry. The Original Knife & Tool Sharpener is designed to create a precise convex edge along the entire length of the blade using flexible abrasive belts and angle guides. Whether you’re looking for a sturdy tool to have at the ready or looking to keep your pocketknife sharp, Sharp Side has got you covered. Sharpening a convex edge also requires a different sharpening technique. A good knife won't do you any good if you can't easily carry it with you. As such, in theory, a convex edge won't chip as easily. The handle is large enough to offer you enough grip even when you have large hands and while wearing gloves. Other brands who use this type of grind are Fällkniven and Bark River Knives. Knives & Convex Knife Sharpening System. This immediately raises the following question: can Real Steel's convex edge live up to these expectations? We have some experience when it comes to Real Steel and can wholeheartedly say that they definitely know what they are doing when it comes to the heat treatment. How would it hold up for professional use. We, however, believe that this 'negative' side is considered to be worse than it actually is. Or they think it is more difficult to sharpen. Tip and edge: everything perfectly intact. This is great for personal sharpening. At the end of the handle it becomes a little wider to make sure the knife won't fall from your hand. Required fields are marked *. A thin grind is especially great when you are looking at performance. This technique involves placing a piece of sandpaper over mouse pad like material. In addition, a convex edge is a little stronger, because directly behind the apex (the end of the edge) the knife has a little more material. Because of the popularity of these grinds and the increasing popularity of Real Steel in the rest of the world they decided to also make this convex version available to the rest of the world. A disadvantage is that a convex edge is a lot more difficult to produce. Real Steel Bushcraft Plus Convex 3720 bushcraft knife, Spotlight: Mora Garberg Multimount bushcraft knife, Spotlight: Helle Utvaer bushcraft knife, designed by Jesper Voxnaes, Spotlight: Fällkniven F1 Pro outdoor knife, Skerper Arkansas Stones: A big punch for a small size, KA-BAR Becker BK2 Expert Review | Taking a Different Approach. Read more about cookies on our cookie page. In our article about basic knife safety we show you a couple of cutting techniques. Incredibly hard and strong, and it holds its shape well. As the name might already suggest you primarily use this knife for bushcraft purposes. In most knives, the edge bevel is clearly defined; however, in some blade grinds, the primary bevel and the edge bevel flow together into a single plane or convex arc. Your email address will not be published. These bevels are what forms your knife’s cutting edge. You often see that the tang of the blade protrudes to add a lanyard eye. Many find a convex edge difficult to sharpen. Save my name, email, and website in this browser for the next time I comment. Woodcraft, building a shelter and harvesting and preparing food. A convex edge traversing those two points (the apex of the bevel and where the bevel transitions into the primary grind or blade stock) would have more material supporting the edge…but would also have a broader effective edge angle meaning it would have to displace more material during the cut and at a more rapid pace. (Normally the knives are flat or concave profile) Thank you For a straight edge, we recommend our manual options. However, once one understands what tools and techniques to use, convex bevel sharpening is … The grind is nice and thin, symmetrical and even. When you grind a knife down from its original rectangular shape, you’re creating bevels that eventually meet at a point. Just stroke the edge --- only the edge --- backwards on cardboard, leather, crocus cloth or any other MILD abrasive every few days and that is it. The combination of the thin convex edge and the blade thickness of 4 mm ensure that this knife can handle it all. The 11.5 cm blade is exactly long enough for batoning purposes and short enough to also make good use of the pointed tip. A full convex grind will cut just as well after years of use, as it will when brand new. In addition, a convex edge is a little stronger, because directly behind the apex (the end of the edge) the knife has a little more material. Darex is a 4th-generation family owned company in Ashland, Oregon. As such you benefit from the lack of precision when you sharpen by hand. The choice of G10 as a handle material is also great. A password will be sent to your email address. Not that great. At the same time you are looking for a nicely rounded handle for long-term use. I also prefer the convex edge on my fillet knife. A convex edge can be put on more than just knives. We won't bore you with the chemical composition but because of the addition of a healthy amount of manganese and silicon, the grain structure of the steel is really fine. A belt loop that has enough room for belts up to 8 cm wide. Blade is flat ground with a convex edge, steel hardness 59-60 Rc Over all length is 11.5 inches with a cutting edge a little over 6 inches. It is attached in a nylon sheath. This protrusion, however, as said protrudes and could cut in your chest during certain cutting techniques. Not an easy task. In addition, finger grooves that are too large and sharp angles limit the ways you can hold a knife. It is also extremely difficult to end up with an even, symmetrical and consistently thin convex grind. Aside from some minor scratches we even couldn't find any traces of use. Stop. Because material from the side of the blade is removed when sharpening a full convex grind, the thickness of the edge is a constant throughout the life of the knife. A convex edge is where the bevel on each side of the blade is slightly rounded (convex!) A convex edge can be put on more than just knives. After using it to its full extent the edge was still perfectly intact. Begin by setting the L-bracket of each Guide Rod to 18° and tighten the thumbscrews. The blade stock is .14″, which is fairly thick for a knife of this size, imbuing the CVX-80 with a necessary ruggedness for the treks in the great outdoors. G10 can also easily handle changes in temperature and humidity. Converting a mess of fish into fillets can take a lot of cutting, and the convex holds an edge like crazy, even on the traditionally flexible fillet knife blades. The convex version of the Real Steel Bushcraft Plus Convex already existed before it was launched worldwide. Use the coarse stones to grind the bevels until they reach from the shoulder to the edge. Without altering the structure of the knife during the sharpening phase. It is relatively unique that this type of steel was specifically developed for knives. As such, in theory, a convex edge won't chip as easily. The Convex edge on a knife is an edge that is curved or sharpened with an arc. This gives it weight and reinforcement, making it stronger and meatier than others. Rather than being ground in a concave or convex curve, the grind of the blade is tapered consistently or in a flat manner from the spine to the edge of the blade. With the spine of the blade we could easily use a firesteel, and even scraping of the bark off a birch tree was a piece of cake. At the front of the handle you will find a subtle finger groove that is just present enough for you to know how to hold it. You can take the kydex sheath apart and turn it to make sure left-handed users can also easily use this sheath. Every knife blade is ground uniquely to form a sharpened edge. Instead of a fixed, flat bevel throughout, the convex edge angle gradually changes across the entire bevel. However, if you use a handheld diamond whetstone and the above mentioned felt-tip trick, it is fairly easy to sharpen the convex edge, but as with everything, practice makes perfect. don't mind the promo on the mouse pad. But what makes this knife so special is its convex edge. The Convex edge on a knife is an edge that is curved or sharpened with an arc. Many knife aficionados consider a convex grind the strongest and most durable profile. The Work Sharp Knife and Tool Sharpener also sharpens axes, hatchets, and other various tools which makes tasks, like splitting wood, more efficient. The first most common impression from the sceptics is that “as you sharpen a blade like that, you will run out of the cutting edge” Sharpening a convex edge is easy and fast with Work Sharp Outdoor Products. With this knife the combination is perfectly balanced. A disadvantage is that a convex edge is a lot more difficult to produce.