Devices for sharpening knives. DIY universal sharpening machine

Dull knives in the household can not only cause a bad mood for the housewife, but also cause accidents. Hardware stores have an assortment of tools designed for sharpening knives, but not all of them suit customers. Alternatively, you can make a machine for sharpening knives yourself; the drawings for its manufacture are not difficult for a person who knows how to craft.

Types of stones for processing blades

Before you start making a knife sharpening machine with your own hands, you need to familiarize yourself with information about its components. Sharpening stones, or they may also be called abrasive stones, are one of the decisive factors achievements excellent result, but the skill of the master plays an equally important role.

Types of whetstones

So to get the perfect sharpening you will have to practice a lot.

Exist the following types stones suitable for sharpening cutting surfaces:

• Tools that require water to operate. The advantage of this type of sharpening stone is that it saves material - the surface of the tool is less susceptible to wear.
• Oil stones are similar in structure water stones, but have an oily surface.
• Natural stones are made from natural materials. Before making a tool, such a stone undergoes industrial processing.
• Artificial stones - used in their manufacture artificial materials. It is believed that an instrument made from non-natural components is inferior in quality natural materials, but they are also quite cheap.

If desired, you can make a homemade abrasive block. To do this, you need to take flat plexiglass 5 mm thick rectangular shape and use double-sided tape to stick sandpaper on it. This is the easiest way to make a knife sharpener; it is convenient because when worn out sandpaper it is easy to replace.

Why is the sharpening angle so important?

The angle between the edges of the blade is called the sharpening angle. Exact observance of a given angle is the main requirement when processing a cutting surface with an abrasive tool, and it is its value that affects the sharpness of the blade.

Using a simple marker you can control the turning angle; just paint over the area being sharpened with it. Uniform erasing of paint indicates good quality blade processing.

Necessary conditions for a sharpening machine

In order to make knives with your own hands, you need to carefully plan the stages of work and draw up drawings. If the master has experience, then he can develop them himself or use ready-made drawings that are offered in specialized literature.

For ideal processing of the cutting surface, the machine must meet the following requirements:

• reliable and at the same time not too rigid fixation of the knife in a vice;
• compliance with the angle, during the sharpening process the angle must be constant;
• The design of the machine must provide for the possibility of changing the sharpening angle.

You can read below about how to make your own blade straightening devices that are in no way inferior to purchased mechanisms.

DIY knife sharpener

The most affordable option for a sharpening device

We do the most quick option devices. To do this, you need to prepare 2 pairs of wooden corners, an abrasive block and a protractor to correctly determine the sharpening angle. The dimensions of the bars must be the same. The wooden corners are fastened together using adjustable screws, and a sharpening block is securely fixed between them at the required angle.

Despite the ease of manufacture, such machines have a number of disadvantages, these include:

• the processing angle has to be maintained manually - which is not very convenient during a long processing process;
• the need for rigid fixation of the device on work surface for its stability;
• When sharpening, you need to constantly monitor the tension of the ties so that the block does not change its position.

But it should be noted that such simple homemade products quite suitable for processing household kitchen knives and do not require large financial investments in production.

Manual sharpener with adjustable stone

This machine is a more complex design, but it is much more convenient to use. The basis for its creation was a model of a machine called the Lansky sharpener.

Lansky sharpener

The advantage of such models is the reliable fixation of the knife blade.

The device is support table, on which the knife is attached. At the opposite end of the table, a screw stand with a bar is vertically fixed. A guide rod is inserted into this bar, on which an abrasive stone is mounted. By moving the bar along the screw rod, you can change the angle of metal processing.

To the advantages of machines with similar design can be attributed:

• high processing accuracy;
• the possibility of replacing the block with sandpaper glued to plexiglass;
• The wide support base allows you to secure the machine on any table.

When operating the machine, the only difficulty lies in the long-term adjustment of the position of the sharpening stone. If processing is planned different types blades, you will have to reconfigure the device each time.

Possibility of adjusting the position of the knife

An alternative to a machine with a moving sharpening stone is a device where it is possible to adjust the position of the knife relative to the whetstone. Basically, its design is similar to the machine with an adjustable bar, a little easier to manufacture.

A movable block is mounted on the base plane to secure the rod with the bar. Clamps are also installed on it, one is adjustable, the other is persistent. Using an adjustable clamp, you can adjust the sharpening angle.

The only drawback of this model is the appearance of wear on the bar in one specific place. This drawback can be eliminated by installing a long pin to adjust the edge relative to the surface being processed.

Each option described above has its own advantages and disadvantages. When making your choice in favor of one model or another, you need to focus on the level of skills and the magnitude of the needs for operating the machine.

Video: Making a knife sharpening machine

In households, the use of cutting, sawing and planing tools is often necessary. During operation, they lose their sharpness, and the blade needs to restore its original properties.

Taking your tools to workshops to sharpen them is a reasonable option, but in order not to waste money again, you can make a device for sharpening knives with your own hands.

General information about sharpening knives

The goal of any type of knife sharpening is to ensure a sharp blade. And most important factor, which affects long-term and efficient operation- this is the sharpening angle. The practicality of this parameter is well assessed during the work process. If you look objectively, you will notice that with a smaller angle, the knife blade results in a sharper one. But with this action, it turns out that the period of improved cutting qualities is not very long, i.e. it becomes dull faster. The sharper the knife blade becomes during the sharpening process, the more quickly it will become dull. Based on this pattern, we can come to the conclusion that the angle must be selected correctly and the value must be maintained evenly along the entire length of the edge.

It is worth noting that only those types of blades that have a certain degree of hardening can be sharpened. If on cutting parts If the hardness of steel exceeds 55 HRC, it cannot be sharpened with any available tools.

The golden rule for sharpening knives is to keep the sharpening angle constant. cutting edge throughout its entire length.

To achieve this, you need professionalism, skills and special equipment that will allow you to hold the tool in your hands, maintaining a given angle of inclination of each cutting edge.

In this case, you can take care of the purchase special device, but such products are usually expensive, so you can try to make it yourself. Read more about how to make such a device at home below.

Video “Homemade design of a simple knife sharpener”

Features of using the device

Of course, a simple whetstone is suitable for sharpening a knife or the cutting edge of a plane. But its quality will not be the best. To ensure uniform removal of the metal layer and precision processing, it is necessary to use special sharpening devices.

The advantage of such a product is not only its ease of use, but also factors such as:

1. The ability to fix the blades, which is quite reliable and does not cause unnecessary stress. a properly designed device does not allow the metal to be damaged during operation.
2. Possibility of installing the bar at a certain angle. Thanks to this, when the cutting edge moves, the angle value will not change.
3. Installation Variation different angles sharpening. With this functionality, it is possible to process various tools, even sharpening knives with a stepped structure.

Materials and tools required for the device

To make a simple and quite high-quality device, you need to take care of preparing the following workpieces and tools:

• plywood or small laminated chipboard sheet;
• steel stud with a diameter of 8 mm (the thread on it must be cut along the entire length);
• textolite or ebonite bars (alternatively can be replaced with hard wood - beech, oak, etc.);
• aluminum plate (with a thickness of at least 5 mm);
• fasteners – bolts, nuts (wing);
• neodymium magnet (you can find it on an old computer HDD).

Drawings of a device for sharpening knives with your own hands

After preparation and provision of materials, you can begin the process of assembling the device. First of all, we take plywood to use as a frame, which should rest on the mounting legs at a certain angle in the range from 15 to 20 degrees. After this, the pin we prepared is screwed into the lower part; its length should be approximately 35-40 cm. To make the mounting thread more durable, you can use glue or sealant.

We fasten an aluminum plate in the center of the installed plywood. Before fastening it, it is necessary to make a groove, which in size will correspond to the diameter of the fixing bolts. It is worth noting that we use an aluminum plate as this will help avoid damage to the steel blade of the knife.

After this, we proceed to making a lever that will allow you to secure the emery to the device. To assemble it we use the remaining part of the pin. Then we take two textolite (or wooden) blocks and, by sawing out, we make holders for the lever. The stops should be secured on one side with a wing nut.

It is optimal to provide a spring-loaded block near the handle, which will allow you to quickly change the emery stone.

As the main elements, you can use blanks from homemade bars - we glue sheets of sandpaper to the aluminum plate, and their grain size should be different. Such a device can be quite easily fixed in the lever.

The main design feature is the presence of a hinge with a double degree of freedom. Such a device can be easily assembled using the same PCB bars. One of them should be screwed onto the threads of the vertical stud, and used as a horizontal rotary axis and a height adjuster for the lever support (this is necessary for setting the sharpening angle).

The function of the second bar, which has a horizontal hole for the lever, is that it should be screwed to the first.

Thanks to this, it is possible to ensure free vertical movement of the entire lever structure.

The knives are clamped with a plate, or fixed to the surface of a neodymium magnet. When removing the first layer with coarse types of abrasive, the blade must be securely fixed.

If it is necessary to perform fine-tuning, you can install the blade on a magnet and perform the sharpening operation with little effort. The horseshoe of magnets should be recessed at the same level as the table top and set with epoxy glue.

Manufacturing homemade device for sharpening knives can be considered complete. It is enough to set the desired angle and sharpen the edge slowly and smoothly along the entire length of the blade.

Video “Do-it-yourself knife sharpener”

Device for sharpening knives using electric sandpaper

An electric sharpener will not only speed up the work, but also make it possible to obtain high-quality concave edge profiles on the blades, the so-called fuller sharpening. It is impossible to achieve such forms using a linear bar; therefore, these types of devices are not interchangeable, but complementary devices.

It is noteworthy that a person, working on a manual sharpening device, controls the speed and intensity of the processes performed, while emery wheel has a constantly high rotation speed, which can negatively affect the condition of the knife.

With friction, metal surface lends itself to strong heating, which results in the “tempering” of the hardening of the steel. The material loses many properties, it becomes less hard, which leads to abrasion and the appearance of torn edges. Another problem with a “released” knife is the rapid loss of sharpness. In this regard, you need to work carefully with an electric sandpaper, bringing the blade for sharpening to the abrasive for short periods of time and taking frequent breaks to allow the knife to cool.

When working in such modes, it is quite problematic to maintain constant angles, so the tool needs to be securely fixed during such processing.

The design of such a device is quite simple to implement. In the direction of the rotating axis, there are guides on the emery along which carriages with knives move. The angles are maintained mechanically, and the forces are determined directly by the operator.

This type of device is quite simple to make with your own hands - there is no need to carry out precision work for processing metal parts. The base material is actually used to make the guides.

On the workbench, near the sharpener, guides are mounted, with the help of which it is possible to change the distance from the knife stops to the abrasive. This distance affects the sharpening angle. The vertical rod must necessarily have up and down free movement regulators that have durable types of fixation of the current positions.

The knife blade should be held horizontally, pressing against the thrust element. The force in contact with the emery must be adjusted directly during operation. The processing needs to be done symmetrically; you just need to change the sides of the knife and sharpen them at the same angles.

The use of this method can only be used when processing classic type knives. Kitchen, hunting, tourist and other types of cutting planes various instruments require a slightly different approach.

A common type of design for sharpening knives is the “Jointer”

For such a device, it is necessary to use a specialized sandpaper with an end-type working surface. The guide under the carriage is placed at the bottom so that it is located away from the rotating axis. This is due to the fact that in this part of the abrasive wheel, its work is considered most effective. Guides with cutting elements move manually, the clamps are provided by the tool’s own weight.

A drawing of each structural design is shown in the image.

This type of machine was used at the beginning of the last century, and throughout this time the technology of its operation has remained unchanged. The simplicity of this device makes it easy to make for your home workshop. Any components made of metal, plastic, or wood are suitable for this.

By replacing the cutting element on the jointer, you can sharpen the ice ax knives, the main thing is to maintain the correct angle, which should be flatter. Devices for sharpening scissors work on the same principle.

To sharpen a chisel and a plane knife, you can also use an electric sandpaper and locking carriages. But these types of tools are compact and can be sharpened with a mechanical tool.

There are equivalent methods - along the edges and across. In terms of quality, the processing is virtually identical; therefore, it is therefore impossible to primarily single out a specific type of device.

For factory products, blades are supposed to be adjusted transversely.

Using a similar principle, thick plywood is taken from which the frame is made. Any rollers can be used as a guide, preferably more than two. By moving the machine along the surface of the emery, the chisel blade is given an ideal shape.

If serious types of sharpening are not required, simpler devices are also suitable for minor edits.

Attach the bars with the required angles of inclination to the chisel. Place sandpaper and a piece of glass near them. On glass surface you need to apply a soap solution.

You will be pleasantly surprised by the effectiveness of such devices.

For transverse sharpening, it is worth making a simpler device, where the guide element also acts as a support. The blade is attached vertically to the moving part. The only drawback of this is the fixed angle, which is set during the manufacturing process.

But, compared to a knife, the resulting deviations from ideals are not so critical.

This type of device can be used for sharpening plane knives. But due to the wide size of the blades, the process becomes somewhat more complicated. In this regard, you can use an electric sharpener that has an end working surface.

The stops are made of wooden blocks. It is important to provide for the possibility of changing angles. Clamps are provided by the operator, and semicircular sharpening can be performed, which is very indispensable for carpenters.

Naturally, this device is convenient to use for sharpening the edges of chisels. Given the high productivity rate, you will be able to restore tools even with a large number of nicks.

Now you know how you can create a homemade sharpening machine to perform all the necessary operations for sharpening knives at home.

Video “Device for sharpening various types of knives”

The knife sharpening machine is necessary tool in everyday life, at work or in workshops. They are used to sharpen cutting elements various devices - hair scissors, planer, Chef’s Choice kitchen knife, cutter tools, etc. Depending on the purpose and technical characteristics, exist different types machine tools

Photo of the sharpening machine

All machines designed for sharpening tools are divided into two groups:

• Universal;
• Special (specialized).

1. A universal machine for sharpening knives with your own hands allows you to process various cutting, cutter, planing knives. This is an electric unit that is equipped with a pair grinding tools. Their role is played by tapes, disks, plates, or a combination of different types of devices.
2. Specialized ones work with specific types of cutting tools, therefore they cannot be used simultaneously for processing a planer or Chef’s Choice tools.

Specialized machines are called for:

• Scissors and knives. The sharpening angle is optimal for giving such products the necessary sharpness. Products are served on grinding wheel, observing the established angle.;
• Drill. These are units that allow drills to return their former cutting capabilities;
• He drank chains. The electric or gasoline type of saw has chains that also require sharpening. A different angle is needed here;
• Engravers. On such machines they use a combination abrasive wheels and engraving attachments. No breaks for similar device You can work no more than 30 minutes.

Choosing a machine for circular knives, pay attention to the issue of device power. In this component, machines are divided into two types.

1. Household. On a household sharpening device designed for self made, the duration of operation without interruptions cannot exceed 20 minutes. Electric drive allows for small-scale grinding operations. Household models are equipped with a small list of elements and are meager in terms of options.
2. Professional. A category of expensive machines that can work for a whole day without the need for a break. The electrical unit includes a speed switch and a set of auxiliary devices. Important Feature lies in the fact that with the help of components you can set the desired turning angle of the knife.

Device Features

By purchasing a machine for flat knives, or planning to assemble the device with your own hands, you should definitely find out about the design features of the unit.

1. The main element of the machine is an electric motor.
2. Another important component is the base.
3. The structure, mounted on legs, has special fastenings and a worktop.
4. Abrasive elements are installed on both sides of the electric motor. They are located parallel to each other.
5. Abrasive wheels and belts can have varying degrees of grit. Some allow for rough sharpening, while fine-grained ones provide final finishing of the surface.
6. An electric motor is almost always asynchronous. This explains his quiet operation and high rotation speed.
7. The diameter of the abrasive disc is 100-250 millimeters with a thickness of 15-32 millimeters.
8. Often part of the abrasive unit is covered with a casing to protect the operator from chips.
9. The supports for the supports of the tools being processed can move closer or further from the abrasive element, thereby changing the sharpening angle.
10. Protective screens are the prerogative of professional machines. This element is rarely found on household models. The screen is a transparent plate made of plastic.
11. All buttons and controls are located on the machine body. If you have to operate the machine yourself, be sure to make sure that the control unit is easy to use specifically in your case.

Specifications

Manufacturing sharpening devices is a complex task. Because it's better to do right choice finished unit rather than learning the nuances self-made. To ensure that a household or professional sharpening unit intended for scissors, cutter knives, planes, and planing tools meets your expectations, pay attention to:

• Power. An electric sharpening machine can have a power of 350-1000 watts. If it's not professional, but home machine, just choose the option where the electric motor produces 500-800 W. More powerful models will consume a lot of electricity, and the turning result will not change in any way. At the same time, low power will not be enough if it is a professional machine. A professional sharpener chooses devices with a power of 750-1000 W;
• Nutrition. There is no need to install a three-phase network yourself, since tabletop sharpening devices are powered from a standard 220V household network;
• Rotational speed. To ensure high-quality sharpening of planer, cutter, kitchen knives, plane knives, and shearing scissors, you should select the appropriate speed mode for the abrasive wheel. Homemade instrument can have a frequency of up to 1000 revolutions, like a household machine. A professional tool must have a rotation speed control function, since each type of tool and grade of steel has its own requirements for sharpening features;
• Grinding wheel. Professional master knows from sharpening that the abrasive wheel plays one of the most important roles in ensuring high-quality processing knife Home machines can use wheels up to 150mm in diameter. If this is a professional machine, the set of abrasive wheels is selected individually, based on the characteristics and specialization of the master;
• Disc mounting diameter. If you do incorrect choice, sharpening device it simply won’t fit or will dangle loosely on the mounting unit. Therefore, before purchasing a new disk, be sure to check what mounting diameter your machine has;
• Dimensions, weight. Desktop devices quite compact. But professional tool larger and heavier, since it is manufactured using quality materials, a wider range of components. The main mass is created by an electric motor. There is also a manual sharpening tool, but its capabilities are much lower.

When purchasing a sharpening machine for flat knives, shearing tools, planing knives or Chef’s Choice products, carefully study the factory documentation and operating instructions.

Making power tools is a complex task. Based on video instructions, many manage to create, if not a professional, then at least close to a household machine. The same Chef's Choice knives require careful care. You can sharpen it if you follow all the established rules.

Making your own machine is a pressing issue. But rather than doing it yourself, it’s better to buy a professional machine. With them, your knives will always be in perfect condition. Its estimated price is from 30 thousand rubles.

A knife sharpening device is a necessary thing in every home. Of course, you can purchase a sharpening machine industrial production. But you should keep in mind: the scissors that are sold in specialized stores are quite expensive and often fail.

Construct a simple sharpening machine you can do it yourself. This sharpener does not take up much space and is very easy to use. If you don’t want to make something, you can use a regular sharpening stone. However, a knife sharpening machine is still a great idea, because the simplest machine It will always come in handy, and you can sharpen other tools on it.

Why do knives get dull?

In some houses there are knives They remain sharp for a long time and there is no need for sharpening. And for some owners, on the contrary, they become stupid every now and then. Why is this happening? Here are the most common reasons:

DIY machine

Once upon a time in the old days sharpening machines were rare. When a sharpener came to a village or town, all the local residents brought him their knives, scissors and other cutting tools. In those days, the machine was a circle on which a knife was placed in a horizontal plane. The circle rotated and the blade became sharper.

Until now, many owners who take care of their knives sharpen these objects in a horizontal position, using a special whetstone. It is made of an abrasive material, and the blade, in contact with the bar, restores its sharpness. If you don't have a sharpening machine, this method can be used. However, sharpening knives in a horizontal position is very inconvenient, especially if you do it while hanging. In this regard, many home craftsmen make their own sharpening machines. Here are the main advantages of such a machine:

Operating principle of the device

Here's how a simple sharpening machine works:

To sharpen on such a machine, you do not need to apply any physical effort, and good result achieved very quickly. The risk of injuring your hand is reduced to zero.

Once the blades are sharpened, the question arises of how to properly use and store them. Many housewives, after washing their knives, do not wipe them dry with a towel, but simply put them in a pile in the dish drainer so that the water drains from the cutting tools. Under no circumstances should you do this. When undried, wet knives lie on top of each other in a horizontal position, they quickly rust and become dull.

Therefore, together with a sharpening machine, it makes sense to design a special device for storing knives. This device is a wooden rack in which slots of various sizes are made. Blades are inserted into these slots with the blade facing down. This way, the cutting tools do not come into contact with each other and the blades are always dry. In order to remove the knife from the “socket”, you just need to gently pull its handle.

Correct use of knives

Of course, sharpening knives on a homemade machine is a pleasure. It's nice to watch how a dull blade becomes sharp and begins to shine. However, no one likes to do extra work. Therefore, in order to sharpen them less often, you need to properly care for them. Here are some useful tips:

The sharpness of kitchen appliances largely depends not only on the quality of the product and the metal from which the blades are made, but also on storage conditions. Even the most good knife It will quickly rust if you constantly keep it in water and store it horizontally with other kitchen utensils.

Proper sharpening of knives is of great importance not in everyday life. When the blade is well sharpened, working with it is easy and pleasant. But the main thing is to get injured sharp knife much more difficult than stupid. Sharpening knives on a homemade machine will not take much time and effort, but after that the cutting tools will become as good as new. Sometimes homemade sharpening machines are even used in cafes and restaurants to make the work of chefs easier. But you can also use an ordinary block, because it all depends on your desire and capabilities.

Sharpening knives is a process that even gentle female hands can handle. Indeed, in our time there are many devices that make this task easier. Ceramic knives, for example, do not require sharpening, which is very convenient, but steel knives require periodic sharpening, since the material becomes dull. To sharpen your knives, you can use abrasive stones or a knife sharpening machine.

• Grinding whetstone.
• Files with a special notch.
• Sharpening devices.
• Knife sharpening machines.

Note.

Sharpening knives the old fashioned way is, of course, good and effective way, but a finely tuned machine for home use gives a better result with the desired angle of formation of the blade edge.

Rules for sharpening knives

Experts recommend following a number of rules in order to obtain high-quality knife sharpening at home, which in turn will reduce the number of blade sharpenings.

If you are a supporter of using an abrasive-coated whetstone, start working with the sharpest part of the blade, and end with the duller part, namely the one that is little involved in the process of slicing products. Often the process starts from the middle, moving towards the tip of the blade with a slight turn. The shape of the knife and its thickness affect the sharpening angle of the blade. A sharpening machine for kitchen knives performs sharpening at an angle of 25°, the blade is tilted above the block by 12 - 13°.

The type of sharpening machine for thicknesser knives and the material from which it is made also affects the quality of the work.

On various Internet resources, you can find special videos that clearly show the process of sharpening a knife blade.

Note.

Knives are produced mainly from alloy and carbon steel. Hardened steel you need to sharpen it with an abrasive stone, stainless steel with a triangular file. This is due to the fact that relatively soft metals, during the sharpening process, the surface of the bar with the abrasive is forgotten. The forged blade is quite flexible, so it is advisable to fasten it and sharpen it with a whetstone using casual movements. Frequent use of abrasive stones contributes to the formation of a greasy film on the surface, which must be rubbed off.

Previously, table sharpening machines for knives were made from wedge-shaped bars and oak. The bars were placed on both sides of the wooden blade, so that the cutting edge was free. The structure was tied with rope and, using a whetstone, the blades were sharpened to extreme sharpness, thereby obtaining an excellent sharpening angle.

Sharpening knives used in planes is performed as follows: on glass large thickness, apply sandpaper with a fine fraction, the beveled part of the cutting edge on the abrasive and sharpen in a circular motion.

Sharpening knives at home

For this purpose, you will need to take a block of hard wood, the surface of which is formed by sharpening at a certain angle necessary to form the edge of the blade. This makes it possible to maintain the angle of the processed edge. For ease of sharpening the blade, fix the blade in the plane of the block using self-tapping screws.

Make a sharpening machine for jointer knives with your own hands, this will make the process easier and the quality of work much higher. The main thing is to follow the rules and nuances in your work, and there will be no problems.

A DIY knife sharpening machine is designed to make it easier to work with metal products. Home tool You can sharpen it with your own hands using available tools, but in production you can’t do without a machine. There are larger volumes and more advanced tools.

Professional knife sharpening machines

The sharpest tool is a boning knife or carving knife.

This is what butchers use to cut up animal carcasses and cut skins. With such intensive work, the blade of the tool becomes dull extremely quickly. If the amount of work is not too large, sharpening can be done at on a regular machine, which is equipped with control over the angle of the blade edge. Knife sharpening machines in the meat processing industry mainly use KNECHT USK 160. Such machines are universal, so absolutely any knives can be sharpened on them.

At enterprises involved in woodworking and carpentry shops, they install equipment that can cope with large volumes of work. Tools used here include jointers with long blades, as well as planers. Metal sharpening occurs on equipment with a mechanical drive, which supplies the tool for sharpening.

When trying to sharpen a tool yourself using a sharpening bowl

...without the use of fixation and guides, then zones with different sharpening angles will form on the blade. When processing wood with a poorly sharpened tool, you will get an uneven cut and a wavy surface. The sharpening machine for flat knives has a simple vertical design, The discs are sharpened on machines with a divider and a rotating table.

Universal knife sharpening machine

This type of equipment in the best possible way Suitable for enterprises that perform large volumes of work per day. No one will tinker with metal by hand, since it is hard work. Tabletop machine VZ-319 is equipped with a rigid frame and a precisely adjusted mechanical drive. Therefore, it copes with sharpening any type of tool - planes, cutters, knives, etc.

For household suitable for use Model Tormek T7. The equipment of this unit is large, there are many attachments and additional elements for sharpening kitchen knives, scissors and other tools.

Making a knife sharpening machine with your own hands

Making a knife sharpening machine for household use is quite simple; for this you will need a piece, or, wooden slats, sandpaper, wing bolts. The first step is to make a knife holder; for this purpose, cut a piece of material. To avoid the block clinging to the holder, you need to sand the edge at a certain angle using sandpaper. On vertical rack make markings and cut off the top, this will serve as the basis for. The angle is set to half that required to sharpen the blade.

For household knives the angle is 10 - 15°. To make it easier to build a knife sharpening machine, make a drawing, it will be much easier for you. Take into account the fact that the height is affected by the transverse base. At the final stage, all elements need to be cut and sanded. Then, you need to make holes for the bolts in the plate that will secure the blade. When making markings, determine the distance of the holes from the edge of the base. This will allow you to sharpen blades of different thicknesses.

On next stage, the plate must be secured using bolts. The vertical posts are fixed with screws. It is important to remember that the pressure on the bottom is small, so thermal glue can be used to fix the elements. The horizontal crossbar is attached in the same way.

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