Self-made machine for sharpening knives with their own hands: a diagram, instruction, manufacturing features

Each man in the house will benefit from a convenient machine for grinding knives with his own hands. After all, often about the owner is judged by how sharp this kitchen tool is.

There are many techniques for sharpening blades of knives. For example, for a process conducted at home, only a bar for turning or sufficient tools with an angular shape of the gap will be sufficient.

For the correction of expensive knives hunters European manufacturers produce devices in the form of solid bars, which are based on a high-strength alloy.

This article will describe the manufacture of a machine for knife sharpening with their own hands.

Why knives are blunt?

What is the reason that the blade is dull when cutting? This can be explained by the fact that the abrasive particles that are present in the cut material have their negative impact on the cutting edge. For example, they are present on vegetables, paper. In simple terms, the blade is subject to gradual erasure.

The next reason is the impossibility to keep the blade in the desired position permanently. Any trembling of the hand causes the slope of the knife, which entails a lateral load.

Technique of honing

The technique of honing consists in unified, but at the same time rather labor-intensive methods. The main task is to eliminate the damage to the blade. It should be noted that many such a procedure, like sharpening knives, provides a good mood and tranquility.

The main rule for this process is to keep the exact fixed angle. Power is not required here. The main thing is that the bar and the blade meet at a certain angle. This is the main rule of the sharpening technique.

What should I do to maintain a constant angle?

In order for the angle to have a constant exponent, there are two ways. The first is to acquire the sharpening skill. The control of the angle can be made by means of a conventional marker. They should paint over the carts and after several cycles of sharpening see how much paint is preserved. If it is worn unevenly, then the blade is not well processed.

If the sharpened knife is decorative, then the blade should be sealed with adhesive tape so that only the cutting edge remains open. Even if you fail to guide your hand, there will be no scratches on the blade.

An important point is that the direction of the blade along the bar is perpendicular to the edge at the points of contact. In fact, it is difficult to do. It is acceptable that the angle between the edge and the blade is less than 90 degrees. But with the direction along the cutting edge, this indicator is not suitable.

Abrasive particles of the bar can leave grooves on the blade that will never get stuck, but when cutting they will play their positive role. If the grooves are aligned along the cutting edge, then when cutting they will not be useful. The worst thing is that the cutting edge can break off altogether.

It is important that the bar was long. It should be one and a half or two lengths of the blade. It is allowed that the bar from the diamond is somewhat shorter, since it grinds faster and better. Its width does not play a significant role. If it is of a larger width, then it is more convenient to work on it and there is less chance of making a blade out of the device. This can damage its lateral surface or the blade.

Making a knife sharpener with your own hands

Homemade devices for sharpening knives come in different designs. All that is required from the manufacturer is the availability of the required material and the skills to work with the tools.

The principle of the operation of such a device as a manual knife sharpening machine is to hold the blade of the knife in a vertical position and drive it along a bar fixed to the desired angle. This is much easier than placing the bar for sharpening horizontally and holding the knife at the desired angle.

In order to make a knife sharpener with your own hands, you need a piece of laminate, a wooden rail, sandpaper and a pair of bows with lambs. Replacing the laminate can serve as chipboard or plywood

To make a knife holder, it is necessary to cut off some of the material. To the bar when sharpening does not touch the holder, it is necessary to clean its edge at an angle by means of an emery.

It is necessary to mark out and cut off the top of the vertical post, which will serve as a support for the bar. The angle is chosen to be half that of the knife sharpening. For kitchen knives, it is recommended to take an angle of 10-15 degrees.

The machine for knife sharpening with your own hands, the drawings of which are made known, requires a correct calculation of the length of the base of the racks. Please note that the height setting will be affected by the subsequent installation of the transverse support. After that all the details are cut off, and the edges are cleaned.

Are planned and drilled holes in the base and plate for pressing the bolts that fix the blade. When marking the distance of the holes from the edge of the base is maintained. This is necessary for the universality of the device, since all knives have their own width. The pressure plate is bolted.

Vertical racks are fastened with screws. The moment is also taken into account that the load on the bottom is low. In this case, it is better to resort to the use of thermal glue. In this way, a horizontal crossbar is attached. The sharpener is almost ready. It remains to make a bar.

To cut it, cut the right length of the rake. On one edge is glued sandpaper with the right size of the abrasive. To optimize the result, it is possible to resort to the production of several bars with different grain parameters. The best is the range of P600 - P2000. To protect your hands from cuts, you need to screw the handle on the top side of the rail.

As a result, you get a homemade knife sharpening machine with your own hands, featuring high functionality and practicality. When working, the device rests against the edge of the table, which is quite comfortable when used.

The machine for sharpening knives with their own hands can be of a different kind. In this case, its basis is the M8 threaded rod. Two large washers and nuts are used, which serve to hold a bar length of 200 mm.

Heat-shrinkable tube closes the thread. A pair of paper clips serve as fixing devices for the guide rail at the correct height. This provides a smooth adjustment of the angle of sharpening. The base is a bar, the thickness of which is 40 mm. It is supported by hand.

How to sharpen the planer knives with your own hands

Each owner, who has a plane or a planer, probably faced the problem of sharpening their knives. Periodically acquire new ones is expensive. Knives can easily be sharpened with their own hands. Specialized machines or grindstone are used. If the jointing machine is used constantly, it is better to make a machine for sharpening knives with your own hands.

The machine for sharpening the planer knife with your own hands

To sharpen the planer knife use special grinding equipment. The knife sharpening machine with its own hands has compact dimensions. It can be installed in a garage or on a private plot.

Many people are interested in how to make a knife grinder with their own hands. For the manufacture of the device you need to find certain details. Perhaps, such spare parts were littered in your barn or garage. They can also be purchased via the Internet.

The machine for sharpening the planer knives with your own hands comprises:

• Face plates;
• Table;
• Engine;
• Vacuum cleaner;
• Casing.

First you need to find a faceplate. This is the most important component of the future equipment. It is she who is responsible for the process of honing. The blades of the jointer are narrow, and the faceplate serves as a guarantee of a full and safe sharpening. This item will have to buy a new one, but the rest can be used and old ones.

It is better to purchase faceplates of German or American production. The average cost of the part is 25 000 rubles.

The next step is to find an engine whose power should be 1-1.5 kW. You do not need to buy it. Any one, even from an old washing machine, will do. But the table, the casing and the vacuum cleaner will surely be found for everyone.

The basic stages of manufacturing the device

When the table is selected, the motor is fixed directly below it. The faceplate is attached to the driving part. The engine must initially be equipped with a button that allows the unit to turn on and off. It should be conveniently located.

For reliable protection, the faceplate is closed with a square-shaped casing with one cut-out corner. It is this area that is subject to sharpening.

On the lower surface of the table, in the grinding area, an opening of the same diameter as the hose of the vacuum cleaner is made. The presence of a vacuum cleaner is not fundamental, but it is desirable to install it. It removes unnecessary dirt from the processing of the blade.

What do I need to know?

Mounting the engine under the base of the faceplate is not a prerequisite. It can be done so that the parts are connected by means of a belt. In this case, the design will be difficult.

The machine for sharpening knife blades with their own hands is also suitable for saws and axes.

Sharpening the icebreaker

Sharp knives ledobura enable the fisherman to quickly make holes in water ice reservoirs. However, over time, any tools for cutting are blunted and require sharpening.

For fishermen, a quality icebreaker is a great pride. Often on water reservoirs, true competitions on the speed of drilling holes are arranged. And not always victory smiles to young and strong fishermen, who are armed with devices of imported production. There are cases when in competition in a role of the winner there are experienced anglers equipped with the simple tools of the Soviet manufacture. The reason for the high drilling speed of the hole is the good sharpening of the knives and the correct adjustment of the device. Fishermen-beginners, having bought new Swedish devices, even do not have time to blink an eye, as their knives become blunted. The smallest sand grains and pebbles in the ice contribute to the formation of chipped and potholes on the blade.

Sharpening of the devices is carried out in a variety of ways. Many of our ancestors did not even know what a professional grinding machine is. In most cases, the sharpening was performed by means of hand tools.

Homemade icebreaker: what will it take to make it?

For the manufacture of such a device, as a machine for sharpening the icebreaker knives with your own hands, you will need two strips of steel, the thickness of which is 4 mm, the width is 60 mm, and the length is 200 mm. A strip is often used as a strip from the car. But it is very difficult to bend.

Progress

To begin with, you should make the case of the device. The steel strips are bent so that the bevels of the knives pressed to the ends of the arc are not only parallel, but also in the same plane.

After the arc is made from the same steel strip, the pressure plate flexes, which serves as a fixation for the sharpened knives

In the body and pressure plate, drill holes for bolts M12 or M14. Using the bolt and nut to tighten the body and the pressure plate, we grip the knives between them and check that they are firmly attached to the surface of the end of the circle from the emery.

If the blades are not at the required angle (the chamfers do not fit exactly to the circle), then the device is modified by bending the body arc to the appropriate level. If the knives are correctly positioned, the structure is disassembled, and stiffeners are welded to both sides of the arc.

Sharpening of knives is performed better on an emery stone, which rotates horizontally. In this case, when the knives are wetted with water, the latter remains on the blade and stone longer, ensuring their safety. Often lower the knives into the water. This will help prevent overheating of the steel.

Minus devices

The disadvantages of the device are the impossibility of grinding knives with different angles of cutting chamfer. But every manufacturer of ice drills offers its own models. In this case, a universal device is suitable.

The manufacture of a universal device for sharpening the icebreaker

The universal design allows you to sharpen the knives at any angle of the cutting edge. With smoothness changing the angle between the arms of the unit, on which the knives are fastened with screws, it is possible to fix the desired position of the knives in relation to the plane of the grinding stone.

To make this device, you need to find a door awning with a minimum backlash, as well as a screw M8 or M10 with its nut. In the shoulders of the canopy holes are drilled. Their diameter is 6-7 mm (for attaching knives to them by means of screws).

From the steel strip, whose thickness is 3 mm, a fixing plate with a slot for the fixing screw is made. Plate and screw are welded to the canopy's shoulders.

It happens that the knives are sharpened, the location of the holes does not correspond to the openings in the canopy. In this case, additional holes for knives of non-standard type are drilled in the shoulders. In this case, the device is more versatile.

How to sharpen the knives of a planer?

Such adaptations as planing machines and thicknessers can often be seen in country houses. They are brought to the desired state by means of unprocessed lumber. Knives of these devices, like any others, are dull. If you use them often, the best way is to sharpen the knives for the planer with your own hands. To produce grinding equipment at home, you will need different materials: metal, aluminum or wood.

The knife holder can be made from a wooden bar. By making a saw cut by 45 degrees with a circular saw, you can sharpen the knives with a belt grinder or with a large bar. If the latter is not present, a smooth surface of metal, wood, chipboard or glass is fixed sandpaper.

Knife holders can be made from improvised materials. The optimal solution will be the use of metal corners, which have an indicator of 90 degrees. When placing two knives on each side, the grinding angle of each will be equal to 45 degrees. With the help of screws, you can fasten the knives to the second corner.