The hand jointer has been actively used in carpentry since ancient times and is now widely used. And ever since then Special attention devoted to such an event as sharpening jointer knives. After all, only a well-adjusted tool allows you to obtain a high-quality product.

So, sharpening jointer knives with your own hands begins with removing the knife along with the chipbreaker, which is subsequently unscrewed. After this, the resin and dirt that formed during work are washed off the knife. Gasoline copes well with this task. After cleaning the knife, you can proceed directly to sharpening.
Sharpening jointing knives can be done in many ways. Anyone who does this often and has enough experience sharpens a knife by simply holding it with his hands under the right angle. For those who have less experience, there are a lot of devices, electrified and manual. Since blade sharpening and straightening machines are expensive, the most commonly used hand tools. Such products are both factory-made and home-made. An extremely simple device for maintaining the sharpening angle unchanged is shown in the photo below.
It is a furniture bolt, about fifteen centimeters long with a semicircular head. This shape of the bolt head reduces friction during sharpening. There are two nuts attached to the bolt threads, one of which is fixed relative to the other. By moving these nuts up or down you can change the sharpening angle within a wide range. In addition to the nuts, the bolt has two wide washers, between which the jointer blade is clamped. The knife is secured using a wing nut. The assembled structure is shown below.

The sharpening angle of the jointer knives can be calculated geometrically or measured using a protractor. For planing soft wood, the jointer knives are sharpened at an angle of 25 degrees; for planing hard wood and for soft steel, the jointer knife should be sharpened at an angle of 30 degrees. There are also factory-made devices for sharpening carpentry tools on sale. In addition to jointing knives, such devices can be used to sharpen chisels, turning cutters and other cutting tools. The photo below shows the most common and inexpensive device for sharpening jointer knives with your own hands. With its help, it is easy to adjust the sharpening angle by moving the knife up to increase the angle and down to decrease it.
The set sharpening angle of the tool can be determined using the existing ruler, which is folded down in this photo below.
The knife is secured with two screws. The scale is graduated for the most common sharpening angles - 25,30,35 degrees. Among the disadvantages of such a device, it can be noted that sharpening often occurs unevenly, due to an unevenly clamped blade. The shaft, thanks to which the device moves, is made of plastic and is not very durable.
Sharpening of jointer knives, regardless of the chosen device, is done on sandpaper, which is attached to a piece of tempered glass. By changing the grain of the paper, acceptable sharpness is achieved. Finish sharpening by grinding and polishing the blade chamfer. For sanding, use the finest-grained paper available. Polish the blade on a leather belt, onto which GOI paste is applied. After finishing polishing on the paste, the blade reflects objects like a mirror and has a razor sharpness.

Planing machines and thickness planers are no longer uncommon in country houses and dachas. Thanks to them, you can purchase untreated lumber and bring it to the finish you need, which certainly saves you money.

But whatever you say, the knives used in machines become dull and have to be sharpened. It’s one thing if you are located near special workshops where knives are sold for sharpening, but it’s a completely different matter if there are no such workshops nearby.

In addition, many are not satisfied with the price for sharpening and the quality of the work performed. It is in such cases that you have to sharpen the knives yourself. If, due to your occupation, you have to do this often, then it is best to make sharpening machine, in which the emery or knives will move. There are plenty of such proposals and projects on the Internet. Moreover, they are suitable for the manufacture of such a machine various materials made of metal, aluminum and wood.

In addition, when making a knife holder, which can be made from wooden block By making 45-degree cuts with a circular saw, you can sharpen the knives using a belt sander or on a large whetstone. If there is no large block, then smooth surface, metal, wood, chipboard or glass, sandpaper is fixed and sharpened with its help.

Knife holders, or rollers for sharpening knives as they are called, can be made from scrap materials, but metal corners that have 90 degrees are best suited; if you place two knives on the sides, you get a sharpening angle of 45 degrees for each knife. And you can secure the knives with a second corner using screws.

However, each knife mounting design is different. So you can invent various options. The main thing is that the knives are sharpened equally along their entire length and have the same sharpening angle.
Author RVT

Every man in the house would benefit from a convenient sharpening machine. After all, the owner is often judged by how sharp this kitchen tool is.

There are many techniques for sharpening knife blades. For example, for a process carried out at home, only a turning block or ready-made devices with an angular gap shape.

To adjust expensive hunters' knives, European manufacturers produce devices in the form of solid bars, the basis of which is a high-strength alloy.

This article will describe how to make a machine for sharpening knives with your own hands.

Why do knives get dull?

What is the reason why a knife becomes dull when cutting? This can be explained by the fact that the cutting edge is negatively affected by abrasive particles that are present in the material being cut. For example, they are present on vegetables and paper. Speaking in simple language, the blade is subject to gradual wear.

The next reason is the inability to hold the blade in the desired position all the time. Any trembling of the hand causes the knife to tilt, which entails a lateral load.

Sharpening technique

The sharpening technique consists of unified, but at the same time quite labor-intensive methods. the main task consists of eliminating damage to the blade. It should be noted that for many, such a procedure as sharpening knives provides a good mood and peace of mind.

The main rule in this process is to maintain a precisely specified constant angle. No force required here. The main thing is that the block and blade meet at a certain angle. This is the basic rule of the sharpening technique.

What needs to be done to maintain a constant angle?

In order for the angle to have a constant indicator, there are two ways. The first is to acquire the sharpening skill. The angle indicator can be controlled using a regular marker. They should paint over the connections and, after several sharpening cycles, see how well the paint is preserved. If it is worn unevenly, then the blade is not processed well.

If the knife you are sharpening is decorative, then you should seal the blade with tape so that only the cutting edge remains open. Even if you misdirect your hand, there will be no scratches on the blade.

An important point is that the direction of the blade along the block is perpendicular to the edge at the points of contact. This is actually quite difficult to do. It is acceptable for the angle between the edge and the blade to be less than 90 degrees. But when directed along the cutting edge, this indicator is not suitable.

The abrasive particles of the stone can leave grooves on the blade that will never be sharpened, but will play a positive role when cutting. If the grooves are oriented along the cutting edge, then they will be of no use during cutting. The worst thing is that the cutting edge may break off altogether.

It is important that the bar is long. It should be one and a half or two lengths of the blade. It is allowed for the diamond block to be somewhat shorter, as it grinds faster and better. Its width does not play a significant role. If it is wider, then it is more convenient to work on it and there is less chance of the blade moving beyond the limits of the device. It might damage him lateral surface or a blade.

There are homemade devices for sharpening knives different designs. All that is required from the manufacturer is availability the required material and tool skills.

The operating principle of such a device as manual machine To sharpen knives with your own hands, you need to hold the knife blade in a vertical position and drive it along a block fixed at the desired angle. This is much easier than placing the sharpening stone horizontally and holding the knife at the desired angle.

In order to make a machine for sharpening knives with your own hands, you need a piece of laminate, a wooden strip, sandpaper and a pair of bots with wings. Chipboard or plywood can serve as a replacement for laminate.

To make a knife holder, you need to cut off some of the material. To prevent the block from touching the holder when sharpening, you should sand its edge at an angle using sandpaper.

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

A machine for sharpening knives with your own hands, the drawings of which are prepared in advance, requires the correct calculation of the length of the base of the racks. Please note that the height indicator will be affected by the subsequent installation of the transverse support. After this, all parts are trimmed and the edges are cleaned.

Holes are marked and drilled in the base and plate for pressing the bolts that secure the blade. When marking, the distance of the holes from the edge of the base is maintained. This is necessary for the versatility of the device, since all knives have their own width. The pressure plate is secured with bolts.

Vertical posts are secured with screws. It is also taken into account that the load on the bottom is small. In this case, it is better to resort to using thermal glue. The horizontal crossbar is attached in exactly this way. The sharpening device is almost ready. All that remains is to make the block.

To make it, a strip is cut required length. Sandpaper is glued to one edge with the right size abrasive To optimize the result, you can resort to making several bars with different grain sizes. The range P600 - P2000 is considered the best. To protect your hands from cuts, you need to screw the handle on the top side of the rail.

The result is a homemade machine for sharpening knives with your own hands, characterized by high functionality and practicality. When working, the device rests against the edge of the table, which is quite comfortable when using it.

There are also other types of machine for sharpening knives with your own hands. In this case, its basis is threaded rod M8. Two large washers and nuts are used, which serve to hold a bar 200 mm long.

Covers the thread. A pair of paper clips serve to secure the guide stand at the desired height. This ensures smooth adjustment of the sharpening angle. The base is made of timber, the thickness of which is 40 mm. It is supported by hand.

How to sharpen jointing knives with your own hands

Every owner who has a plane or jointer has probably encountered the problem of sharpening their knives. It is expensive to purchase new ones periodically. Knives can be easily sharpened with your own hands. In this case, specialized machines are used, or if it is used constantly, it would be better to make a machine for sharpening knives with your own hands.

Do-it-yourself machine for sharpening a jointer knife

To sharpen a jointer knife, special sharpening equipment is used. The machine for sharpening knives with your own hands has a compact size. It can be installed in a garage or on a personal plot.

Many people are interested in how to make a knife sharpening machine with their own hands. To make a device you need to find certain parts. Perhaps similar spare parts are lying around in your barn or garage. They can also be purchased via the Internet.

A machine for sharpening jointing knives with your own hands consists of:

faceplates;
table;
engine;
vacuum cleaner;
casing.

The first thing you should do is find the faceplate. This is the most important component of future equipment. She is the one responsible for the sharpening process. The jointer knives are narrow, and the faceplate guarantees complete and safe sharpening. You will have to buy this part new, but the rest can be used even as old ones.

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

The next step is to find a motor whose power should be 1-1.5 kW. There is no need to buy it. Anyone will do, even old ones washing machine. But everyone probably has a table, a casing and a vacuum cleaner.

Main stages of device manufacturing

When the table is selected, the engine is fixed directly under it. A faceplate is attached to the moving part. The engine must initially be equipped with a button that turns the unit on and off. It should be conveniently located.

For reliable protection the faceplate is covered with a square-shaped casing with one corner cut out. It is this area that needs to be sharpened.

A hole of the same diameter as the vacuum cleaner hose is made on the lower surface of the table in the sharpening area. The presence of a vacuum cleaner is not essential, but it is advisable to install it. It removes unnecessary dirt from blade processing.

What do you need to know?

Mounting the engine under the base of the faceplate is not a requirement. You can make sure that the parts are connected using a belt. In this case, the design will be more complex.

A do-it-yourself jointer knife sharpening machine is also suitable for saws and axes.

Ice screw sharpening

The sharp knives of the ice drill enable the fisherman to quickly make holes in the ice of reservoirs. However, over time, any cutting tools become dull and require sharpening.

For fishermen, a high-quality ice auger is a great source of pride. Often, true competitions on the speed of drilling ice holes are held on reservoirs. And victory does not always smile on young and strong fishermen who are armed with imported equipment. There are times when experienced fishermen, equipped with simple tools Soviet made. The reason for the high hole drilling speed lies in the good sharpening of the knives and the correct settings of the device. Beginner fishermen, having bought new Swedish devices, do not even have time to blink an eye before their knives become dull. Tiny grains of sand and pebbles in the ice contribute to the formation of chips and gouges on the blade.

Sharpening of devices is carried out by the most different ways. Many of our ancestors did not even know what professional sharpening was. In most cases, sharpening was performed using hand-made devices.

Homemade ice drill machine: what will you need to make it?

To make a device such as a knife sharpening machine, 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 spring from a car is often used as a strip. But it is very difficult to bend.

Progress

First you need to make the device case. The steel strips are bent in such a way that the chamfers of the knives pressed to the ends of the arc are not only parallel, but also in the same plane.

After making an arc from the same steel strip, a pressure plate is bent, which serves as a clamp for the knives being sharpened

Holes for M12 or M14 bolts are drilled in the body and pressure plate. Having tightened the body and the pressure plate using a bolt and nut, we clamp the knives between them and check the strength of their adherence to the surface of the end of the emery circle.

If the knives are not located 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 positioned correctly, then the structure is disassembled, and stiffeners are welded to the body arc on both sides.

Sharpening knives is best done on a knife that rotates horizontally. In this case, when wetting the knives with water, the latter remains on the blade and stone longer, ensuring their safety. Dip knives in water frequently. This will help prevent the steel from overheating.

Disadvantage of the device

The disadvantages of the device include the impossibility of sharpening knives with different cutting chamfer angles. But each ice drill manufacturer offers its own models. In this case universal will do device.

Making a universal device for sharpening an ice drill

The universal design allows you to sharpen knives at any cutting edge angle. By smoothly changing the angle between the arms of the unit, on which the knives are fastened with screws, you can fix the desired position of the knives in relation to the plane of the grindstone.

To make this device, you need to find a door hinge with minimal play, as well as an M8 or M10 screw with its own nut. Holes are drilled in the canopy arms. Their diameter is 6-7 mm (for attaching knives to them with screws).

A fixing plate with a slot for a fastening screw is made from a steel strip, the thickness of which is 3 mm. The plate and screw are welded to the canopy arms.

It happens that knives are sharpened, the location of the holes does not correspond to the holes in the canopy. In this case, additional holes are drilled in the arms for non-standard knives. In this case, the device has greater versatility.

How are planer knives sharpened?

Devices such as planers and surface planers can often be seen in country houses. Through them, raw lumber is brought to the desired state. The knives of these devices, like any other, become dull. If you use them often, then the best solution would be to sharpen the knives for planer with your own hands. To make sharpening equipment at home, you will need various materials: metal, aluminum or wood.

A knife holder can be made from a wooden block. Made through circular saw cuts at 45 degrees, you can sharpen knives with a belt grinder or a large block. If the latter is not available, then sandpaper is attached to a smooth surface made of metal, wood, chipboard or glass.

Knife holders can be made from scrap materials. The optimal solution would be to use metal corners that have an angle of 90 degrees. When placing two knives on the sides, the sharpening angle of each will be 45 degrees. Using screws, you can secure the knives with a second corner.

Sharpening knives for woodworking machines is a mandatory process that can be done with your own hands using special tools. Sharpening is the restoration of the previous cutting capabilities of hacksaws, scissor shafts, planers, jointers and other devices for wood processing.

To sharpen the blade shaft of a planer or jointer, you will need the appropriate device;
The sharpening work is done by hand;
Craftsmen learned to assemble sharpening devices;
When restoring hacksaws, jointing devices, sharpening knife shafts, be sure to follow several recommendations and strictly follow the technology;
If the teeth of hacksaws and knife shafts are sharpened incorrectly, the quality of wood processing with tools will significantly deteriorate;
Sharpening stones are a good alternative for a sharpening machine. But if you have the opportunity to assemble it yourself or purchase a sharpening machine, be sure to take advantage of it.

Preparatory activities

If you need to sharpen knives for a woodworking machine, you should start with the required preparation steps. It is not so important what parameters the knife shaft or cutting sheets of hacksaws have 13 mm, 20 mm or all 200 mm, they will definitely need sharpening.

Some people prefer to send dull shafts to special workshops, where they can easily restore the previous sharpness of a 200 mm knife or small cutter lathe. But both ordering sharpening and buying new knife shafts is a financially expensive matter.

Preparation for sharpening begins with familiarization with available means restoration of cutting tool surfaces and some recommendations.

To keep jointers, planers, and hacksaws in working order, assemble or purchase an appropriate sharpening device.
Simplest, a budget option is a whetstone. But the quality of processing directly depends on your skills in working with stone. If there are none, achieve the required level sharpening is extremely difficult. Plus, stones are not able to cope with all types of cutting tools that are equipped with modern woodworking machines.
Choose a machine that can sharpen at low speeds, as this has a positive effect on the quality of the finish.
The recommended equipment for a sharpening machine is a water cooling system.
Carefully study the equipment of household woodworking machines. Often there is already a sharpening stone, which is optimally suited for processing the knives used.
If the stone is not included in the package, it will have to be purchased separately, leveled with a special device, and smoothed. This is the only way you can sharpen the knife shafts of jointing machines efficiently.
The machines have a function for setting the angle of inclination, adjustable with a special screw. By turning the screw and changing the position of the sharpening device, you can correctly fix the tool relative to the stone.
Next preparatory stage- This is a holder in which the knife shaft is installed.
If you are a beginner, it is not recommended to start your first job with 200 mm knives. Start literally with 13-15 mm, and gradually you will learn to process 200 mm and even 2 mm. To do this you need to accumulate certain experience.
The length of the knife is not a fundamental parameter, since the knife in the holder can move to the distance you require.
Make sure to hold the shaft firmly in place. Otherwise, you will get a significant distortion, due to which the quality of woodworking will suffer.
Study the operating manual of the purchased sharpening machine in detail. If this is a DIY tool, you will have to rely on drawings and available information on the Internet about a specific sharpening device project.

Sharpening

In order for the sharpening of knives for a woodworking machine to give a positive result, you can resume working with the equipment at the same level of quality, you need to adhere to a few fairly simple rules.

The sharpener holder can move left and right relative to the stone to sharpen knives.
Do not allow the blade to end up over the edge.
Immediately fix the holder at a distance of 12 mm from the edge of the grinding wheel.
When sharpening knives of 200 mm or smaller variations, make sure that the water cooling function is activated on the machine.
The cooling system requires constant monitoring. The tank usually has a small volume, so water needs to be added periodically. If it runs out and the sharpening process continues without cooling, you risk ruining a rather expensive knife.
As the knives are processed, water from the cooling system may accumulate on the floor. Because the sharpening machines- these are electrical devices, provide the ability to drain water from your feet, work in rubber shoes. In any case, standing in a puddle of water while working with an electric machine is always dangerous. Follow safety regulations.
Keep the whetstone clean. It gets dirty quite quickly with active use.
The grinding wheels of machines are cleaned using a special device. The machines should be equipped with this cleaning bar, but if it is not included in the set, then you will have to purchase it separately.
Each subsequent sharpening, according to the operating rules, is performed only on the condition that the stone is cleaned. Therefore, after each sharpening, arm yourself with a cleaning bar and treat the machine with it.
On average, sharpening using a special machine takes about 10-20 minutes. It all depends on the type and size of the tool, which became dull as a result of woodworking operations.
After sharpening the tools of woodworking machines, do not rush to return them to their place and continue working. After processing on the machine, the tool needs to be fine-tuned.
Finishing consists of applying a special paste to the surface of the cutting element. Proceed according to the instructions provided by the manufacturer of the finishing paste on the packaging. Different pastes may differ slightly in application methods.

If you did everything correctly, then the knife should be perfectly smooth, sharply sharpened, and free of any irregularities or burrs. Don't worry when the result doesn't meet your expectations the first time. This takes some time and a little experience. That’s why you should start with simple and inexpensive knives that you don’t mind ruining.

Owners of planing machines and electric planers periodically face the problem of sharpening cutting edges. A well-sharpened tool will ensure clean wood processing even at non-ideal angles and speeds. The easiest way is to sharpen knives and knife heads with your own hands using specialized equipment.

Knife sharpening is necessary

sharpening planer knife

Planing knives require timely care because:

blunt surfaces process wood poorly;
when processing soft rocks with dull knives, the surface becomes covered with lint and unevenness;
worn edges crumble;
During planing with blunt edges, the engine and power units are overloaded.

Attempts to sharpen blades with your own hands using diamond stones, as a rule, give short-term results. Due to poor quality of editing, the blades have to be sharpened soon. Therefore, professional carpenters use only mechanical sharpening.

Types and designs of machines

The machines on the market are distinguished by the knife feeding mechanism:

The machine for sharpening planing knives with manual feed consists of:

grounds;
abrasive stone;
carriages for fixing the knife.

During processing, the cutter moves forward with the help of a handle. Transverse movement of the cutter is ensured by a flywheel.

Automatic machines differ in size and range of options. Mechanisms for industrial applications installed on a powerful cast iron frame. The carriage is equipped with a support. You can set the speed of movement of the blade and the thickness of the metal layer being removed. Industrial machines allow you to simultaneously sharpen several planer blades without changing settings.

Every carpenter knows that a well-sharpened tool is the key to high-quality processing of the material. I offer a device for sharpening planing straight knives.

I install the device together with the abrasive wheel on a vertical milling machine. The device consists of lower and upper plates. On the top there is a holder for sharpening knives. The bottom plate is attached to the machine table with clamps through screwed corners. Both plates are connected on one side by hinges.

The holder for planing knives consists of clamps and a 50x50 mm corner, which I cut so as to withstand a sharpening angle of 40 degrees. This makes the cutting edge strong.

To avoid damage to the abrasive tool when touching the part, I lower it to a depth of no more than 10 microns. To lift the top plate, I use a lifting wedge device, consisting of a wedge, thrust plates and lead screw. When the lead screw handle is rotated left and right, the wedge moves and the top plate rises or falls.

You can sharpen one or more knives by moving the holder left and right along the top plate.

Knife sharpening device

Nikolay Panasik, Volkovysk.

Knife sharpening device – necessary tool on the farm

IN household There are always cutting, sawing and planing tools. During the work, the sharpness is lost, and the blades have to be restored. You can give knives and planes to a workshop, but this costs money and takes up extra time. Therefore, home craftsmen prefer to sharpen the tool with their own hands.

Important! Only blades with a certain degree of hardening can be sharpened. If the cutting part has a hardness above 55 HRC, it cannot be sharpened with improvised tools.

You can buy a device for sharpening knives or other household utensils at the store. Save time, but spend a considerable amount - good sharpening are expensive.

By the way, there are different opinions about what the knife sharpening device is called. Emery, whetstone, whetstone, sharpener, musat...

These definitions may refer to the same thing, or various products? We will talk about this and how to make such a device yourself in the article.

Since the advent of cutting objects (weapons, knives, axes), man has been looking for a way to restore the sharpness of the edge. In the Bronze and Copper Ages it was simple.

Homemade knife sharpener made by yourself. The knife cuts paper like a razor! Simple design available for making at home.

Soft metals were adjusted to any stone. With the advent of steel blades, special rocks, usually of volcanic origin, were used for sharpening.

Some of them are still used today: the American "Arkansas" and the Japanese "water stone". These are expensive devices, so most craftsmen use artificial sandpaper.

A simple whetstone can sharpen both the knife and the cutting edge of the plane. However, the quality will leave much to be desired.

The golden rule of sharpening: Each blade has its own edge angle, and it should not change along its entire length.

This principle lies in the design of all sharpening devices. By following this rule, you can make such a device yourself.

Do-it-yourself knife sharpening device - drawings, varieties

In order for the blade edge to be processed evenly, several conditions are necessary:

Fixation of the blade is both reliable and without excessive load. Metal should not be damaged in a vice
Setting a specific angle for the bar. When moving along the edge of the knife, the angle should not change
Possibility to set different sharpening angles. You can process various instrument, and some types of knives have a stepped structure.

Device for linear sharpening with a whetstone

For production you will need:

Plywood or laminated chipboard
Steel stud with thread along the entire length, diameter 6-8 mm
A block of textolite or ebonite. Can be replaced with hard wood - beech, oak
Aluminum plate 3-5 mm thick
Fasteners - bolts, nuts (preferably wing nuts)
Neodymium magnet from an old computer HDD.

We assemble a frame from plywood, resting on legs at an angle of 15°-20°. We screw a 30-40 cm long pin into the part below. For strength, you can secure the thread with glue or sealant.

In the middle work surface we fix aluminum plate. First we make a groove in it, along the diameter of the fixing bolt. Why aluminum? To avoid damaging the steel blade of the knife.

We make a lever to secure the emery. It is assembled from the remaining part of the hairpin. We cut out the bar holders from two textolite bars. On one side the stop is secured with a nut.

It is more convenient to make a spring-loaded block on the side of the handle - for quickly changing the sandpaper.

We use homemade bars as the main element - we glue sandpaper with different grain sizes onto an aluminum plate. Such devices are easily fixed in the lever.

A special feature of the design is a hinge with two degrees of freedom. It is assembled from two identical PCB bars. One is screwed onto a vertical pin, and serves both as a horizontal rotary axis and as an adjuster for the height of the lever support (this is how the sharpening angle is set).

The second block, with a horizontal hole for the lever, is screwed to the first. This ensures free movement of the lever vertically.

The knife can be clamped using a plate, or mounted on a neodymium magnet. When removing the first layer with coarse sandpaper, the blade should be firmly fixed.

For finishing, you can install the blade on a magnet and sharpen it with little effort. The magnet horseshoe should be recessed flush with the table top and glued with epoxy glue.

Homemade device ready for sharpening knives. We set the required angle of attack and sharpen the edge with smooth movements along the blade.

The same principle is used in a device for sharpening knives on an electric sharpener.

Electric emery not only speeds up work, but also allows you to obtain a high-quality concave blade edge profile. This is the so-called dolovaya sharpening. It will not be possible to obtain such a shape on a linear block, so these two devices do not replace, but complement each other.

Important! If, when working with a manual sharpening device, you completely control the intensity of the process, then the high speed of rotation of the emery wheel can damage the knife.

Due to friction, the metal on the tip heats up, and hardening occurs. The steel loses its hardness and wears off with ragged edges. Another problem is that a “released” knife quickly loses its sharpness. Therefore, you should work with an electric sharpener carefully. Apply the blade for a short time and take breaks to cool down.

Do-it-yourself knife sharpener - video with explanations and manufacturing example

In this mode it is difficult to maintain a constant angle, so fixing the knife is mandatory.

The design is quite simple - along the axis of rotation of the emery there is a guide along which the carriage with the knife moves. The angle is maintained mechanically, and the force is determined by the operator.

The device is easy to make with your own hands - and it is not necessary to perform precise work on processing metal parts. The guide is literally made from the base material.

On the workbench, next to the sharpener, guides are attached, with the help of which you can change the distance from the knife stop to the rotating circle. This distance determines the sharpening angle. The vertical rod must have free movement up and down with a strong position fixation.

The knife is held horizontally, pressing against the stop. The force of contact with the emery is adjusted directly during sharpening. Processing occurs symmetrically, you simply change the side of the knife and sharpen at the same angle.

This method is only suitable for processing classic knives. Kitchen, hunting, tourist. The cutting planes of other tools require a different approach.

Design for sharpening knives, say a jointer:

A specialized sandpaper with an end working surface is used. The guide for the carriage is located at the bottom, away from the axis of rotation.

It is in this part of the disk that the abrasive works most effectively. The guide with the cutting element is moved manually, the pressure is provided by the knife’s own weight.

Drawings of all structural elements are presented in the illustration.

This machine was used almost 100 years ago, and the technology has not changed since then. Simplicity of execution allows you to repeat the device in a home workshop. Any materials - metal, plastic, wood.

Instead of cutting elements of a jointer, you can sharpen ice ax knives for winter fishing. Only the angle is shallower. The scissor attachment works in the same way. Design (as well as emery wheel) is significantly smaller in size.

You can also use an electric sander and a locking carriage to sharpen chisels and plane knives. However, these tools are compact and can be handled by a mechanical tool.

There are two equivalent methods - along the edge and across. The quality of processing is approximately the same, so it is impossible to give preference to a specific device.
The factory product involves transverse editing of the blade.

By analogy, we make a carriage from thick plywood. We use any rollers as guides, preferably more than two. By moving the machine along the sandpaper, you can give the tip of the chisel an ideal shape.

If you don't need serious sharpening, a simpler device will do just fine for minor adjustments. Attach a block with the required angle of inclination to the chisels. Place sandpaper and a piece of glass nearby. Apply to glass soap solution.

The effectiveness of the device will pleasantly surprise you.

And for transverse sharpening, you can make an equally simple device. The guide is also a support. The blade is mounted vertically on the moving part. The only drawback is that the angle is fixed and is determined during manufacture.

True, unlike a knife, deviation from the ideal is not so critical.

The same device is suitable for sharpening plane knives. Just because of the width of the blade, the process is quite labor-intensive. Therefore, you can use an electric sander with an end working surface.

The emphasis is made of a wooden block. All you need to do is change the angle. The clamp is provided by the operator, and semicircular sharpening can be performed - carpenters will appreciate this option.

Of course, the same device is convenient for tidying up the edge of a chisel. Considering high performance– you will restore the instrument even after serious nicks.

Homemade device for sharpening knives and tools from a sharpening machine

When you again manually rub a knife on an old whetstone, remember this article and create a homemade sharpening installation for your home workshop.

Homemade machine for sharpening knives with your own hands: diagram, instructions, manufacturing features

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

There are many techniques for sharpening knife blades. For example, for a process carried out at home, only a turning block or ready-made devices with an angular gap shape will be sufficient.

To adjust expensive hunters' knives, European manufacturers produce devices in the form of solid bars, the basis of which is a high-strength alloy.

This article will describe how to make a machine for sharpening knives with your own hands.

Why do knives get dull?

What is the reason why a knife becomes dull when cutting? This can be explained by the fact that the cutting edge is negatively affected by abrasive particles that are present in the material being cut. For example, they are present on vegetables and paper. In simple terms, the blade is subject to gradual wear.

The next reason is the inability to hold the blade in the desired position all the time. Any trembling of the hand causes the knife to tilt, which entails a lateral load.

Sharpening technique

The sharpening technique consists of unified, but at the same time quite labor-intensive methods. The main task is to eliminate damage to the blade. It should be noted that for many, such a procedure as sharpening knives provides a good mood and peace of mind.

What needs to be done to maintain a constant angle?

Making a machine for sharpening knives with your own hands

Homemade knife sharpening devices come in different designs. All that is required from the manufacturer is the availability of the necessary material and skills in working with tools.

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

To make a knife holder, you need to cut off some of the material. To prevent the block from touching the holder when sharpening, you should sand its edge at an angle using sandpaper.

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

To make it, a strip of the required length is cut. Sandpaper with the required abrasive size is glued to one edge. To optimize the result, you can resort to making several bars with different grain sizes. The range P600 - P2000 is considered the best. To protect your hands from cuts, you need to screw the handle on the top side of the rail.

There are also other types of machine for sharpening knives with your own hands. In this case, it is based on an M8 threaded rod. Two large washers and nuts are used, which serve to hold a bar 200 mm long.

Heat shrink tubing covers the threads. A pair of paper clips serve to secure the guide stand at the desired height. This ensures smooth adjustment of the sharpening angle. The base is made of timber, the thickness of which is 40 mm. It is supported by hand.

How to sharpen jointing knives with your own hands

Every owner who has a plane or jointer has probably encountered the problem of sharpening their knives. It is expensive to purchase new ones periodically. Knives can be easily sharpened with your own hands. In this case, specialized machines or sharpening stones are used. If the jointer is used constantly, then it would be better to make a machine for sharpening knives with your own hands.

Do-it-yourself machine for sharpening a jointer knife

To sharpen a jointer knife, special sharpening equipment is used. The machine for sharpening knives with your own hands has a compact size. It can be installed in a garage or on a personal plot.

A do-it-yourself machine for sharpening jointing knives consists of:

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

The next step is to find a motor whose power should be 1-1.5 kW. There is no need to buy it. Any one will do, even an old washing machine. But everyone probably has a table, a casing and a vacuum cleaner.

Main stages of device manufacturing

For reliable protection, the faceplate is covered with a square-shaped casing with one corner cut out. It is this area that needs to be sharpened.

What do you need to know?

Mounting the engine under the base of the faceplate is not a requirement. You can make sure that the parts are connected using a belt. In this case, the design will be more complex.

A do-it-yourself jointer knife sharpening machine is also suitable for saws and axes.

Ice screw sharpening

The sharp knives of the ice drill enable the fisherman to quickly make holes in the ice of reservoirs. However, over time, any cutting tools become dull and require sharpening.

For fishermen, a high-quality ice auger is a great source of pride. Often, true competitions on the speed of drilling ice holes are held on reservoirs. And victory does not always smile on young and strong fishermen who are armed with imported equipment. There are times when experienced fishermen, equipped with simple Soviet-made tools, emerge as winners in the competition. The reason for the high hole drilling speed lies in the good sharpening of the knives and the correct settings of the device. Beginner fishermen, having bought new Swedish devices, do not even have time to blink an eye before their knives become dull. Tiny grains of sand and pebbles in the ice contribute to the formation of chips and gouges on the blade.

Sharpening of devices is carried out in a variety of ways. Many of our ancestors did not even know what a professional was. grinding machine. In most cases, sharpening was carried out using hand-made devices.

Homemade ice drill machine: what will you need to make it?

To make a device such as a machine for sharpening ice drill 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 spring from a car is often used as a strip. But it is very difficult to bend.

Progress

First you need to make the device case. The steel strips are bent in such a way that the chamfers of the knives pressed to the ends of the arc are not only parallel, but also in the same plane.

After making an arc from the same steel strip, a pressure plate is bent, which serves as a clamp for the knives being sharpened

Sharpening knives is best done on an emery stone that rotates horizontally. In this case, when wetting the knives with water, the latter remains on the blade and stone longer, ensuring their safety. Dip knives in water frequently. This will help prevent the steel from overheating.

Disadvantage of the device

Making a universal device for sharpening an ice drill

A fixing plate with a slot for a fastening screw is made from a steel strip, the thickness of which is 3 mm. The plate and screw are welded to the canopy arms.

How are planer knives sharpened?

Devices such as planers and surface planers can often be seen in country houses. Through them, raw lumber is brought to the desired state. The knives of these devices, like any other, become dull. If you use them often, then the best solution would be to sharpen your planer knives yourself. To make sharpening equipment at home, you will need various materials: metal, aluminum or wood.

A knife holder can be made from a wooden block. By making 45-degree cuts with a circular saw, you can sharpen the knives with a belt sander or a large whetstone. If the latter is not available, then sandpaper is attached to a smooth surface made of metal, wood, chipboard or glass.

Our ancestors slept differently than we do. What are we doing wrong? It's hard to believe, but scientists and many historians are inclined to believe that modern man sleeps completely differently than his ancient ancestors. Initially.

What does your nose shape say about your personality? Many experts believe that you can tell a lot about a person's personality by looking at their nose. Therefore, when you first meet, pay attention to the stranger’s nose.

Unforgivable Movie Mistakes You Probably Never Noticed There are probably very few people who don't enjoy watching movies. However, even in the best cinema there are mistakes that the viewer can notice.

Why do you need a tiny pocket on jeans? Everyone knows that there is a tiny pocket on jeans, but few have thought about why it might be needed. Interestingly, it was originally a place for storage.

7 Body Parts You Shouldn't Touch with Your Hands Think of your body as a temple: you can use it, but there are some sacred places that you shouldn't touch with your hands. Research showing.

Contrary to all stereotypes: a girl with a rare genetic disorder conquers the fashion world. This girl's name is Melanie Gaydos, and she burst into the fashion world quickly, shocking, inspiring and destroying stupid stereotypes.

Tool for sharpening jointer knives

Good afternoon.
I decided to revive the dull knives for the R-102 planer, and at the same time think about the future sharpening of knives for the planer-thicknesser Caliber SSR-1280.
I don’t have a sharpener for this purpose, and I’m too lazy to resharpen it.
I scoured the Internet for foreign sites and found such a useful device.

The toad didn’t give 37, so I decided to build a similar device from scrap materials. I am attaching the drawing. Luckily for me, there were pieces of boards left from old projects, sawn lengthwise at 45 degrees ( sawing machine no need to unpack). In the near future hardware store I bought the following:
bolt M6x50 - 3 pcs.
bolt M6x100 - 1 pc.
wing nut M6 - 5 pcs.
nut - barrel (coupling) M6 - 1 pc.
sandpaper 4 sheets (100, 180, 2x800 grits)

The total came out to 49 rubles.

Sharpening the plane knives was complicated by the fact that the original sharpening was made with a noticeable concavity. Therefore, I had to sharpen quite a long time and tediously on coarse sandpaper until it was level. To speed up the process, I decided to sacrifice the sharpening angle and make it blunter, about 45 degrees, which is just right for pine.
By the way, the concavity turned out to be different on different sides of the knife. The other side had to be sharpened less, I immediately went through 30-40 razors on the 800th piece of sandpaper - and it was done.
Yes! I didn’t have any suitable glass, but I had an old Soviet tabletop from kitchen table With plastic coated— pretty smooth for the intended villainy.

Generally, similar device It will come in handy for sharpening slightly dull knives (3-4 times is probably possible), and then you will still need to send it to a professional sharpener (if in this regard your hands, like mine, do not quite grow from there).

Registration: 10.29.2005 Moscow Messages: 9197

09/08/2009 at 13:50

Goryn wrote.
I decided to revive the dull knives for the R-102 plane

This is included with the Makita plane.

Registration: 03/18/2009 St. Petersburg Messages: 34

05.10.2009 at 12:21

So there in Aglitsky, but in Russian you can, I would buy this.

Registration: 11/19/2007 Kogalym Posts: 17

10/07/2009 at 20:49

How to sharpen the teeth of a carbide-tipped circular saw?

Registration: 01/20/2010 Roslavl Posts: 27

01/20/2010 at 22:20

In fact, an industrial (electric) machine for sharpening knives is quite easy to repeat and seems to me more justified and accurate in operation. Represents a adjustable table with the knife mounted on the edge of the table, an electric motor with a sharpening stone moves parallel to the table along guides (the position of the working surface of the stone is adjusted in height), the accuracy of work and speed are amazing.