At all there is a situation when the knife has become dulled, and it becomes impossible to cut bread, meat or other products normally. A dull instrument is not only uncomfortable, but also unsafe, because it is able to jump off a product that is being cut and injure a person. Therefore, in every house there should be a device for sharpening knives.
Functions of the knife sharpener
The device can be purchased at specialized stores. At the same time, many people are interested in: what is the name of the device for sharpening knives? It has many variants of names: sharpening, emery, bar. But it happens that the purchased device does not always suit the consumer. In this case, you can make the sharpener yourself.
In order for the knife to effectively perform its functions, it is important to properly grind it. It should restore the optimal angle between the edges of the blade, which is different:
- knife for cutting bread and vegetables - it is sharpened at an angle of 15-20 degrees;
- multifunctional tools for processing various types of products - 20-25 degrees;
- hunting and tourist knives - 25-30 degrees;
- tools for processing of solid materials - 30-40 degrees.
In order to sharpen the blade at the right angle, and there are sharpening. Their design consists of two parts:
- bar from abrasive material;
- angle for fixing the knife.
Clamping devices for knife sharpening
The principle of the clamping device for knife sharpening is as follows. The knife is fixed in the jaws of the clamp. Grinding stone with the help of translational movements makes the formation of a cutting smooth edge at the required angle on the tip of the knife. To achieve the ideal sharpness of the tool, a gradual change of grinding stones occurs. In this case, the movement of the stones must be strictly perpendicular to the site, which is sharpened.
The best knife sharpening devices
The best knife sharpening devices are those that can effectively sharpen the tool and ensure its operation. The bar can be made of various materials, namely:
- stones;
- wooden bars;
- mounting angles.
The stones that are used to make the bar for sharpening are of the following types:
- water devices - when working with them water is used, this provides an economical consumption of the surface of the stone;
- oil stones - they are very similar to water in their structure and form, but differ more oily surface;
- Natural - this is natural stones that have undergone industrial processing;
- artificial stones - for their production use of non-natural materials.
In addition, the abrasive bar can be made independently. To do this, take a plate of glass, having a rectangular shape and a thickness of 4-5 mm. On their surface, sandpaper a different grain size, using a two-sided adhesive tape.
The device is made of wooden blocks as follows. For the manufacture of sharpening take 2 wooden and 2 abrasive bars of the same size. The tree is ground with sandpaper, removing all the burrs. The bars are marked according to the desired angle, a grindstone is applied to it and its width is noted. On the markings, the cuts are made to a depth of 1.5 cm. In the indentations, insert abrasive blocks and fix them with bolts.
The presence in your home of a device for sharpening knives will always keep the tools in good condition.
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