Knife sharpening tools and how to use them


Fallkniven DC4 Diamond sharpening stone / ceramic: this is my number 1 choice in travel and often also at home. It's cheap, lightweight and small, but still big enough for comfortable use. The sand is perfect for regular maintenance and is a very resistant material that does not wear out and does not level out. (Click for more information and price).
There are as many schools in this area as there are people who do it. It all depends on how sharp you want your damascus steel hunting Knives and how much time you want to spend doing it.
From rougher to smoother, the sharpening process is done in these steps, which I will explain one by one below.

Grinding> Sharpening> Debarking> Sharpening (optional)

Actually you start back here. When you notice that your knife is becoming opaque, the first thing you should do is sharpen it or hit it. If it's still boring, you probably have some minor dents. This can be solved by sharpening a whetstone. Finally, if the sharpening stone is not enough, you should grind it. This is usually done on a machine that removes a lot of fast material.

Honing

Honing is not very common with survival knives. It is more common with kitchen knives.
What happens when a knife becomes boring is that the edge is damaged or bent if it is a hard steel (wet paste). You use sharpening to correct the last one. By using a round steel bar, you can bend the edge back into position.
Burnishing is not common for survival knives because they are usually made of carbon steel, which tends to splinter rather than bend.

Stropping

Leather Strop with green and white compound: to obtain that extra sharpness in your knife and to eliminate burrs. (Click for more information and price).
Stropping is a process used mainly by barbers to sharpen razors. If the sharpening is for hard blades, then the cut is for hard blades (dry paste).
Stropping is done using a razor rake. Basically a piece of leather, either stretched or stuck to a piece of wood. This leather is rubbed with an abrasive compound. Basically, this is a super fine grindstone. Woodworkers often have two strops with different abrasive compounds, where one is extra fine.
Unlike the sharpening stone, you never pull the strop against the edge, just away from it, at a 90 degree angle.
The main intention with the strop is to wear the burr. The small edge of the material that did not come off when you used the sharpening stone. But it also works to keep the blade sharp during carving.
After sharpening, if I do not have a strop with me I simply use my belt without abrasive compound. What if I do not have a belt on top? I use my clean palm (with care!).

Sharp

Japanese grindstone with extra fine grain can be used for super sharp edges. (Click for more information and price).
Everyone and his mother know the best way to use the whetstone. Or at least for everyone to think. And I'm not saying that my way of doing it is the best either. It's just one way many, and it works for me.
Whetstones come in different grids. And to confuse things a little, there are different scales of grids all over the world. The most accurate to look at are the microns. Where a higher number is a thicker material (larger grain).
They also come in different materials. Some are more difficult and, therefore, stay flatter, while others are softer and need some maintenance to stay stable. For us, rattlers, a two-sided pocket-sized sharpening stone with a thick side and a thin side is enough. Usually a thicker diamond and a thinner ceramic side. The range of 35-15 microns is fine for a knife in normal use.
I use the Fällkniven DC4. With a diamond side of 25 microns and a thinner ceramic side.
I use different techniques, depending on whether I want to make a good advantage quickly, or little by little I want to make a super sharp edge.
In doing so, the fast edge begins by using the thick diamond side. I hold the knife in my dominant hand, with the edge pointing away from me. Later I'll change this grip for the other side of the blade.
The sharpening stone is in the palm of my other hand, lying flat with the short end pointing away from me.
I put my index finger on the bevel, this allows me to feel that the other side of the bevel lies flat against the sharpening stone. Then I apply a very strong force with the index finger and pull the knife back and forth along the stone. I start from the handle and little by little I walk towards the tip.

Sharp

Japanese grindstone with extra fine grain can be used for super sharp edges. (Click for more information and price).
Everyone and his mother know the best way to use the whetstone. Or at least for everyone to think. And I'm not saying that my way of doing it is the best either. It's just one way many, and it works for me.
Whetstones come in different grids. And to confuse things a little, there are different scales of grids all over the world. The most accurate to look at are the microns. Where a higher number is a thicker material (larger grain).
They also come in different materials. Some are more difficult and, therefore, stay flatter, while others are softer and need some maintenance to stay stable. For us, rattlers, a two-sided pocket-sized sharpening stone with a thick side and a thin side is enough. Usually a thicker diamond and a thinner ceramic side. The range of 35-15 microns is fine for a knife in normal use.
I use the Fällkniven DC4. With a diamond side of 25 microns and a thinner ceramic side.
I use different techniques, depending on whether I want to make a good advantage quickly, or little by little I want to make a super sharp edge.
In doing so, the fast edge begins by using the thick diamond side. I hold the knife in my dominant hand, with the edge pointing away from me. Later I'll change this grip for the other side of the blade.
The sharpening stone is in the palm of my other hand, lying flat with the short end pointing away from me.
I put my index finger on the bevel, this allows me to feel that the other side of the bevel lies flat against the sharpening stone. Then I apply a very strong force with the index finger and pull the knife back and forth along the stone. I start from the handle and little by little I walk towards the tip. As I approach the tip, I turn the knife so that the edge remains perpendicular to the direction of my movement. I work like this for a few minutes before switching sides.
Now the edge turned against me. And instead of using my index finger, I use my thumb to apply force.
After this, the knife should be brushed. Use some grass or whatever is at hand. Then I turn the sharpening stone and work on the thinner side in the same way. But with less pressure.
Some say that this way of coming and going is bad, because the metal grains that you shave stay on the sharpening stone and scratch the edge. I imagine that this is true, so for a more careful sharpening I use the same method, but I only raise the razor's edge against the sharpening stone, then I pick it up and repeat.
I also use water on the grindstone while doing a more careful sharpening. This causes the metal grains to drag while I work.
A third way, which some people prefer is to move the knife in circles on the sharpening stone. This is especially useful in the soft ones, for example, the Japanese sharpening stones that I use to work wood. Where your goal should be to use as much of the stone as possible to keep it flat.

Grinding

Tormek is perhaps the sharpening system well developed in the market. There are tons of different templates available for different tools and devices. (Click for more information and price).
Grinding can be done for three reasons.
If you have serious dents in your knife.
If you are concave, the bevel is worn and flat.
If you want to change the shape of the blade or the angle of the bevel.
The dents can be corrected in the field with a file. Or at home in a sharpening system. A sharpening system is a machine with a rotating round stone. You have different tools to get exactly the bevel angle you want.
If you have lost the concave bezel, it happens after sharpening the knife many times. You need to use a sharpening system to correct it. The good thing about a concave bevel is that sharpening is faster because there is less material that needs to be removed. The risk of making the bevel convex is smaller too. Completely changing the knife shape requires a very strong machine with a coarse stone. And constant cooling of the knife by dipping in cold water every 10 seconds.

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