Sharpening knives

Knife sharpening

Knives, especially those made of damascus steel, which we offer in our shop www.dellinger.cz are characterized by high quality manual or industrial processing and very long service life. Care is very important to maintain the top cutting performance of the knife. Knives must be sharpened as needed, preferably on a sharpening stone. Grinding stones come in many designs and grits (coarseness). The knives we all use most often are kitchen knives, which require the most frequent care - namely sharpening. At dellinger.cz, choose from a range of both synthetic and natural grinding stones to help you keep your knives sharp. Buy a sharpening stone and you will see that a sharp knife is much safer than a dull knife.

Choosing a sharpening stone - differences in materials

There are three most common types of sharpening stones in use today. These are oil abrasive stones, water abrasive stones and diamond abrasive stones. Each of these grinding stones has its own advantages that can help users achieve their goals and dream edge.
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1/ Synthetic water abrasive stones
They are generally made of aluminum oxide. This is the same abrasive material used in oil based grinding stones. However, the difference between the two is the binder that holds the abrasive together in the water stone. Water abrasive stones are softer than oil abrasive stones, which allows for faster grinding. The old abrasive material breaks off and is replaced with fresh sharp material. Faster grinding is a definite advantage of water abrasive stones. Another obvious advantage is the use of water rather than oil to remove metal chips from the stone. However, water stone is not perfect. The softness that promotes faster grinding results in faster wear of the water grinding stone. Wear is also uneven and requires frequent straightening of the grinding surface.
2/ Synthetic water grinding stones with the addition of natural materials
These abrasive stones are a combination of a certain amount of the best synthetic and natural materials. The hard work and research of a Japanese craftsman named MORIHEI over several years has resulted in these natural-synthetic stones with the best abrasive properties. The natural-synthetic water-based abrasive stones come in coarser grits of 1000, 4000, 6000 and 12000 - each of which is baked at a different and much lower temperature than conventional synthetic abrasive stones. A resin is used as a binder, as opposed to synthetic grinding stones where magnesium is mostly used.

C/ Diamond stones
Diamond grinding stones contain small diamonds attached to the surface of a metal plate. These small industrial diamonds are much harder than any of the other grinding stones. However, not all diamond stones have the same function and they are not always equal.
There are two main types of diamond grinding stones.
1/ Diamond grinding stone with holes on the surface to catch metal chips.
2/ Diamond grinding stones with a continuous surface. These stones are preferred for tools with sharp points that could get caught in the surface depressions of a non-continuous diamond grinding stone. Both types of diamond stones are available in monocrystalline and polycrystalline variants. Monocrystalline diamonds are more desirable because they last longer. The two biggest advantages of a diamond stone are very fast sharpening and flatness that is consistent. The disadvantage is the high purchase price.

There are many reasons why a wide variety of different types of grinding stones are available. There is no universal type of stone that is best for every knife sharpener. Choosing the right sharpening stone starts with testing and finding the best combinations for perfect sharpening results.