Since ancient times, the hand jointer has been actively used in carpentry work. And ever since then Special attention is given to such an event as sharpening jointer knives. After all, only a well-adjusted tool allows you to get a quality product.

So, do-it-yourself sharpening of jointer knives begins with removing the knife along with the chipbreaker, which is subsequently unscrewed. After that, the resin and dirt that formed during work are washed off the knife. Gasoline works well for this task. After cleaning the knife, you can proceed directly to sharpening.
sharpening planer knives can be done in many ways. Someone who does this often and has enough experience sharpens a knife by simply holding it with his hands under right angle. For those with less experience, there are plenty of gadgets, electrified and manual. Since sharpening and dressing 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. Two nuts are fixed on the thread of the bolt, which are fixed one relative to the other. By moving these nuts up or down, you can change the sharpening angle over a wide range. In addition to the nuts, there are two wide washers on the bolt, between which the jointer knife is clamped. The knife is fixed with a wing nut. The assembled structure is shown below.

The sharpening angle of jointer knives can be calculated geometrically or measured with a protractor. For planing soft wood, the sharpening of jointer knives is carried out at an angle of 25 degrees, for planing hardwood and with soft steel of the jointer knife, the sharpening angle should be 30 degrees. There are also on sale and factory fixtures for sharpening carpentry tools. In addition to planer knives, chisels, turning tools and other cutting tools can be sharpened on such devices. The photo below shows the most common and inexpensive do-it-yourself jointer knife sharpener. With it, it is easy to adjust the sharpening angle by moving the knife up to increase the angle and down to decrease it.
The set angle of sharpening the tool can be determined by the existing ruler, which is tilted in this photo below.
The knife is fixed 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 is moved, is made of plastic and is not very durable.
Sharpening of jointer knives, regardless of the chosen device, is carried out on sandpaper, which is fixed on a piece of tempered glass. By changing the grain size of the paper, an acceptable sharpness is achieved. Finish sharpening by grinding and polishing the chamfer of the blade. For grinding, use the finest paper that is available. The blade is polished on a leather belt, on which GOI paste is applied. After polishing on the paste, the blade reflects objects like a mirror and has a razor sharpness.

Planers and thicknessers are no longer a rarity in country houses and cottages. Thanks to them, you can purchase raw lumber and bring it to the purity of processing you need, which certainly saves you money.

But whatever one may say, the knives used in machine tools become dull and have to be sharpened. It is one thing if you are near special workshops where knives are rented for sharpening, and it is quite another thing 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 by occupation, you have to do this often, then it is best to make grinding machine in which emery or knives will move. There are plenty of such proposals and projects on the Internet. Moreover, for the manufacture of such a machine are suitable various materials from aluminum metal and wood.

In addition, in the manufacture of the knife holder, which can be made from wooden block, after cutting 45-degree cuts with a circular saw, you can sharpen the knives with a belt grinder or on a large bar. If there is no large bar, then on smooth surface, metal, wood, chipboard or glass, sandpaper is fixed and sharpened with its help.

Knife holders, or as they are called knife sharpeners, can be made from improvised 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 fix the knives with a second corner using screws.

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

A convenient sharpening machine will be useful to every man in the house. 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 bar will suffice, or ready-made fixtures with an angled gap.

To adjust expensive hunting knives, 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 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 abrasive particles that are present in the material being cut have a negative effect on the cutting edge. For example, they are present on vegetables, paper. talking plain language, the blade is subject to gradual wear.

The next reason is the inability to keep the blade in the right 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 in unified, but at the same time quite laborious methods. the main task lies in the elimination of damage to the blade. It should be noted that for many, such a procedure as sharpening knives provides a good mood and calm.

The basic rule in this process is to maintain a precisely set constant angle. Strength is not required here. The main thing is that the bar and the blade meet at a certain angle. This is the basic rule of sharpening technique.

What needs to be done to maintain a constant angle?

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

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

It is also important that the direction of the blade along the bar is perpendicular to the edge at the points of contact. In fact, this is 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 bar 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 not be useful when cutting. The worst thing is that the cutting edge can break off altogether.

It is important that the bar is long. It should be one and a half or two blade lengths. It is acceptable that the diamond bar 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 leading the blade beyond the device. It might hurt him side surface or a blade.

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

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

In order to make a do-it-yourself knife sharpening machine, you need a piece of laminate, a wooden rail, sandpaper and a pair of lamb bots. Chipboard or plywood can serve as a replacement for laminate

To make a knife holder, you need to cut off part of the material. So that the bar does not touch the holder when sharpening, it is necessary to clean its edge at an angle with emery.

Need to mark and cut off the top vertical rack, which will serve as a support for the bar. The angle is chosen two times less than the one with which the knife will be sharpened. For kitchen knives it is recommended to take an angle of 10-15 degrees.

A do-it-yourself knife sharpening machine, the drawings of which are obviously drawn up, involves the correct calculation of the length of the base of the racks. Please note that the subsequent installation of the transverse support will affect the height indicator. After that, all the details are cut off, and the edges are cleaned.

Holes are marked and drilled 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 versatility of the fixture, since all knives have their own width. The pressure plate is fixed with bolts.

Vertical posts are attached with screws. The moment that the load on the bottom is small is also taken into account. In this case, it is better to resort to using thermal glue. The horizontal bar is attached in exactly the same way. The grinder is almost ready. It remains to make a bar.

For its manufacture, a rail is cut desired length. Sandpaper is glued to one edge with the right size abrasive. To optimize the result, you can resort to the manufacture of several bars with different grain sizes. The range P600 - P2000 is considered the best. In order 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. During operation, the device rests against the edge of the table, which is quite comfortable when using it.

A do-it-yourself knife sharpening machine can also be of a different type. In this case, it is based on threaded rod M8. Two large washers and nuts were used, which serve to hold a bar 200 mm long.

Closes the thread. A pair of paper clips hold the rail stand at the correct height. This ensures smooth adjustment of the sharpening angle. The base is a beam, the thickness of which is 40 mm. It is supported by hand.

How to sharpen planer knives with your own hands

Every owner who has a planer or jointer has probably faced the problem of sharpening their knives. Buying new ones from time to time is expensive. Knives can be easily sharpened by hand. In this case, specialized machines are used, or if it is used constantly, then it would be better to make a machine for sharpening knives with your own hands.

Do-it-yourself planer knife sharpening machine

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

Many are interested in how to make a machine for sharpening knives with their own hands. To make a device, you need to find certain parts. Perhaps these parts are lying around in your shed or garage. They can also be purchased online.

The machine for sharpening planer knives with your own hands consists of:

faceplates;
table;
engine;
vacuum cleaner;
casing.

First of all, you should find a faceplate. This is the most important component of future equipment. It is she who is responsible for the sharpening process. Jointer knives are narrow, and the faceplate serves as a guarantor of complete and safe sharpening. This part will have to be bought new, but the rest can be used old.

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 the engine, the power of which should be 1-1.5 kW. It is not necessary to buy it. Any will do, even old ones washing machine. But everyone will surely have a table, a casing and a vacuum cleaner.

The main steps in the manufacture of the device

When the table is selected, the engine is fixed directly below 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 comfortable.

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

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

What do you need to know?

Mounting the motor under the faceplate base is optional. You can make sure that the parts are connected by means of a belt. In this case, the design will be 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, all cutting tools become dull and require sharpening.

For fishermen, a quality ice drill is a great pride. Often, true competitions are held on water bodies in terms of the speed of drilling ice holes. And victory does not always smile at young and strong fishermen who are armed with imported devices. There are times when experienced anglers equipped with simple tools Soviet production. The reason for the high hole drilling speed lies in the good sharpening of the knives and the correct setting of the device. Beginner anglers, having bought new Swedish devices, do not even have time to blink an eye as their knives become blunt. The smallest 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 a professional was. In most cases, sharpening was carried out using hand-made devices.

Homemade ice drill machine: what is needed to make it?

For the manufacture of such a device 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 she is very hard to bend.

Progress

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

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

Holes for M12 or M14 bolts are drilled in the body and pressure plate. Having pulled the body and pressure plate together with a bolt and nut, we clamp the knives between them and check the strength of their fit to the surface of the end face 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 stand correctly, then the structure is disassembled, and stiffeners are welded to the arc of the body on both sides.

Sharpening of knives is carried out better on which rotates horizontally. In this case, when wetting the knives with water, the latter remains on the blade and stone longer, ensuring their safety. Dip your knives in the water more often. This will help prevent overheating of the steel.

Minus the device

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

Making a universal fixture for sharpening an ice drill

The universal design allows sharpening knives at any angle of the cutting edge. By smoothly changing the angle between the shoulders 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 grindstone.

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

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

It happens that sharpening of knives is carried out, the location of the holes of which does not correspond to the holes in the canopy. In this case, additional holes are drilled in the shoulders for non-standard knives. In this case, the device has more versatility.

How are planer knives sharpened?

Devices such as planers and thicknessers can often be seen in country houses. By means of them, raw lumber is brought to the desired state. Knives of these devices, like any others, become dull. If you use them often, then the best way out is to sharpen knives for planer with your own hands. For the manufacture of grinding equipment at home, various materials will be required: metal, aluminum or wood.

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

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

Sharpening knives for woodworking machines is a mandatory process that you can do yourself with the help of special tools. Sharpening is the restoration of the previous cutting capabilities of hacksaws, scissor shafts, planers, planers and other devices for woodworking.

To sharpen the knife shaft of a planer, jointer, you will need the appropriate tool;
Sharpening work is done by hand;
Craftsmen learned how to assemble grinding devices;
When restoring hacksaws, planers, sharpening knife shafts, be sure to follow a few recommendations, strictly follow the technology;
If the teeth of the hacksaws, the knife shafts are not sharpened correctly, the quality of wood processing with tools will deteriorate significantly;
Grindstones are a good alternative to a grinder. But if it is possible to assemble with your own hands or purchase a grinding machine, be sure to use it.

Preparatory activities

If you need to sharpen knives for a woodworking machine, you should start with the mandatory 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 give blunt shafts to special workshops, where they can easily restore the previous sharpness of a 200 mm knife or a small cutter. lathe. But both ordering sharpening and buying new knife shafts is a financially costly business.

Preparation for sharpening begins with an acquaintance with available means restoration of surfaces of cutting tools and some recommendations.

To keep jointers, planers, and hacksaws in working order, assemble or purchase an appropriate sharpening tool.
Simplest, a budget option- It's a grindstone. But the quality of processing directly depends on your ability to work with a stone. If there are none, get right level sharpening is extremely difficult. Plus, stones are not able to cope with all types of cutting tools that modern woodworking machines are equipped with.
Choose a machine that can sharpen at low speeds, as this has a positive effect on the quality of processing.
The recommended piece of equipment for the grinder is a water cooling system.
Carefully study the complete set of household woodworking machines. Often there is already a whetstone, which is optimally suited in terms of parameters for processing the knives used.
If the stone is not provided in the package, it will have to be purchased separately, aligned with a special tool, and smoothed. Only in this way can you sharpen the knife shafts of planers with high quality.
On machines there is a function of setting the angle of inclination, adjustable with a special screw. By turning the screw and changing the position of the sharpener, you will be able to correctly fix the tool relative to the stone.
Next preparatory stage- this is the holder in which the knife shaft is installed.
If you are a beginner, it is not recommended to start the first job with 200 mm knives. Start literally with 13-15 mm, and gradually you will learn how to process 200 mm and even 2 mm. To do this, you need to accumulate some experience.
The length of the knife is not a fundamental parameter, since the knife in the holder can move to the distance you need.
Make sure to keep firmly fixed the shaft. Otherwise, you will get a significant distortion, due to which the quality of woodworking will suffer.
Read the instruction manual of the purchased grinder in detail. If this is a do-it-yourself tool, you will have to rely on the drawings and available information on the network about a specific sharpening project.

sharpening

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

The sharpener holder can move left and right relative to the knife sharpening stone.
Don't let the blade go 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, 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 topped up periodically. If it ends, 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 grinding machines- these are electrical devices, provide for the possibility of draining 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. Adhere to safety regulations.
Keep the grindstone clean. It gets dirty quite quickly with active use.
The grinding wheels of machine tools are cleaned using a special tool. Machines should be equipped with this cleaning bar, but if it is not in the set, then you will have to purchase it separately.
Each subsequent sharpening, according to the rules of operation, is carried out only on condition that the stone is cleaned. Therefore, after each sharpening, arm yourself with a cleaning bar, processing the machine with it.
On average, sharpening with a special machine takes about 10-20 minutes. It all depends on the type and size of the tool that has become 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 in applying a special paste to the surface of the cutting element. Proceed according to the instructions provided by the manufacturer of finishing paste on the package. Different pastes may differ slightly in application methods.

If you did everything right, then the knife should turn out to be perfectly even, sharply sharpened, devoid of any irregularities, burrs. Do not worry when the first time the result does not live up to expectations. This takes some time and some experience. That's why it's worth starting with simple and inexpensive knives that you don't mind ruining.

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

Sharpening of knives is necessary

planer knife sharpening

Planer knives require timely maintenance because:

dull surfaces do not process wood well;
when processing soft rocks with blunt knives, the surface is covered with pile and irregularities;
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 a short-term result. Due to poor-quality 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 feed mechanism:

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

grounds;
abrasive stone;
carriages for fixing the knife.

During processing, the cutter moves progressively with the help of a handle. The lateral movement of the cutter is provided by a flywheel.

Automatic machines differ in size and set 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 removed metal layer. Industrial machines allow you to sharpen several planer blades at the same time without changing the settings.

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

I install the device together with the abrasive wheel on a vertical milling machine. The fixture consists of a bottom and top plate. On the top 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 with hinges.

The planer knife holder consists of clamps and a 50x50 mm angle, which I cut to withstand a sharpening angle of 40 degrees. This allows you to make 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 raise the top plate, I use a lifting wedge device, consisting of a wedge, thrust plates and lead screw. Turning the lead screw handle left and right moves the wedge and the top plate rises or falls.

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

Knife sharpener

Nikolai Panasik, Volkovysk.

Knife sharpener - essential tool on the farm

IN household there are always cutting, sawing and planing tools. In the course of work, the sharpness is lost, and the blades have to be restored. You can give knives - planes to the workshop, but money is spent on this, and extra time is wasted. 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 higher than 55 HRC, it cannot be sharpened with improvised tools.

You can buy a tool for sharpening knives or other household utensils in the store. Save time, but spend a lot of money - good sharpening are expensive.

By the way, there are different opinions about the name of the device for sharpening knives. Emery, touchstone, whetstone, whetstone, musat ...

These definitions may refer to the same subject, or miscellaneous products? About this, and how to make such a device yourself, we will tell in the article.

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

Homemade knife sharpener made by hand. The knife cuts paper like a razor! Simple design available to make at home.

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

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

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

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

This principle lies in the design of all grinding devices. By following this rule, you can independently manufacture such a device.

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

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

Blade fixation, at the same time reliable, and without undue stress. Metal must 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 tool, and some types of knives have a stepped structure.

Device for linear sharpening with a bar

For manufacturing you will need:

Plywood or laminated chipboard
Full length threaded steel stud, diameter 6-8 mm
A bar of textolite or ebonite. Can be replaced with solid wood - beech, oak
Aluminum plate 3-5mm thick
Fasteners - bolts, nuts (wing nuts are better)
Neodymium magnet from an old computer HDD.

We assemble a frame from plywood, resting on the legs at an angle of 15 ° -20 °. In the part below, we twist a hairpin 30-40 cm long. For strength, you can fix the thread with glue or sealant.

in the middle working surface we fix aluminum plate. First, we make a groove in it, according to the diameter of the fixing bolt. Why aluminum? In order not to damage the steel blade of the knife.

We make a lever for fixing emery. It is assembled from the rest of the hairpin. We cut out bar holders from two textolite bars. On one side, the stop is fixed with a nut.

From the side of the handle it is more convenient to make a spring-loaded block - for a quick change of emery.

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

The design feature is a hinge with two degrees of freedom. It is assembled from two identical textolite bars. One is screwed onto a vertical stud, and serves both as a horizontal rotary axis and as a lever support height regulator (this is how the sharpening angle is set).

The second bar, 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 with a plate, or mounted on a neodymium magnet. When removing the first layer with coarse emery, the blade should be firmly fixed.

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

Homemade fixture ready to sharpen knives. We set the required angle of attack, and sharpen the edge with smooth movements along the blade.

The same principle is used in the device for sharpening knives on an electric grinder.

Electric emery not only speeds up work, but also allows you to get a high-quality concave blade edge profile. This is the so-called fuller sharpening. It will not work to get such a shape on a linear bar, therefore 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 ruin the knife.

From friction, the metal on the tip heats up, hardening occurs. Steel loses its hardness and grinds with torn edges. Another problem is that a “released” knife quickly loses its sharpness. Therefore, the electric sharpener should be handled with care. Bring the blade for a short time, and take breaks to cool.

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

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 do with your own hands - and it is not necessary to perform precise work on the processing of metal parts. The guide is made literally from the foot material.

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

The knife is held horizontally, pressing against the stop. The force of contact with the emery is regulated directly during sharpening. The processing is symmetrical, you just change the side of the knife and sharpen at the same angle.

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

Design for sharpening knives, say jointer:

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

It is in this part of the disk that the abrasive is most effective. The guide with the cutting element is moved manually, the clamp is provided by the own weight of the knife.

Drawings of all structural elements are shown in the illustration.

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

Instead of jointer cutting elements, it is possible to sharpen ice ax knives for winter fishing. Only the angle is more gentle. The scissor tool works the same way. construction (like emery wheel) is much smaller.

To sharpen chisels and planer knives, you can also use electric emery and a fixing carriage. However, these tools are compact and can be handled by a mechanical fixture.

There are two equivalent ways - along the edge, and across. The processing quality is about the same, so you can not give preference to a particular device.
The factory product involves transverse straightening of the blade.

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

If you do not need serious sharpening, a simpler device is also suitable for small editing. Fasten a bar to the chisel with the required angle of inclination. Put emery and a piece of glass next to it. Apply to glass soap solution.

The effectiveness of the device will pleasantly surprise you.

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

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

The same device is suitable for sharpening planer knives. Only because of the width of the blade, the process is quite laborious. Therefore, you can use an electric emery with an end working surface.

The emphasis is made of a wooden bar. It is only necessary to provide a change in angle. The clamp is provided by the operator, and it is possible to perform semicircular sharpening - carpenters will appreciate this option.

Of course, with the same apparatus it is convenient to tidy up the edge of the chisel. Considering high performance– you will restore the tool even after serious chipping.

Homemade tool for sharpening knives and tools from a grinder

When you again manually rub a knife on an old donkey, remember this article and create a home-made sharpener 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 do-it-yourself knife sharpening machine. Indeed, often the owner is 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 bar or ready-made fixtures with an angular gap shape will be sufficient.

To adjust expensive hunting knives, 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 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 abrasive particles that are present in the material being cut have a negative effect on the cutting edge. For example, they are present on vegetables, paper. In simple terms, the blade is subject to gradual wear.

The next reason is the inability to keep the blade in the right 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 in unified, but at the same time quite laborious 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 calm.

What needs to be done to maintain a constant angle?

Making a machine for sharpening knives with your own hands

Homemade knife sharpeners come in a variety of 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 bar fixed at the right angle. This is much easier than placing the sharpener horizontally and holding the knife at just the right angle.

To make a knife holder, you need to cut off part of the material. So that the bar does not touch the holder when sharpening, it is necessary to clean its edge at an angle with emery.

It is necessary to mark and cut off the top of the vertical rack, which will serve as a support for the bar. The angle is chosen two times less than the one with which the knife will be sharpened. For kitchen knives, it is recommended to take an angle of 10-15 degrees.

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

A do-it-yourself knife sharpening machine can also be of a different type. In this case, it is based on the M8 threaded rod. Two large washers and nuts were used, which serve to hold a bar 200 mm long.

Heat shrink tubing covers the thread. A pair of paper clips hold the rail stand at the correct height. This ensures smooth adjustment of the sharpening angle. The base is a beam, the thickness of which is 40 mm. It is supported by hand.

How to sharpen planer knives with your own hands

Every owner who has a planer or jointer has probably faced the problem of sharpening their knives. Buying new ones from time to time is expensive. Knives can be easily sharpened by hand. In this case, specialized machines or grinding stones are used. If the planer is used constantly, then it would be better to make a machine for sharpening knives with your own hands.

Do-it-yourself planer knife sharpening machine

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

The machine for sharpening planer knives with your own hands 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 the engine, the power of which should be 1-1.5 kW. It is not necessary to buy it. Anyone will do, even from an old washing machine. But everyone will surely have a table, a casing and a vacuum cleaner.

The main steps in the manufacture of the device

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

What do you need to know?

Mounting the motor under the faceplate base is optional. You can make sure that the parts are connected by means of a belt. In this case, the design will be 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, all cutting tools become dull and require sharpening.

For fishermen, a quality ice drill is a great pride. Often, true competitions are held on water bodies in terms of the speed of drilling ice holes. And victory does not always smile at young and strong fishermen who are armed with imported devices. There are cases when seasoned fishermen equipped with simple Soviet-made tools are the winners in the competition. The reason for the high hole drilling speed lies in the good sharpening of the knives and the correct setting of the device. Beginner anglers, having bought new Swedish devices, do not even have time to blink an eye as their knives become blunt. The smallest grains of sand and pebbles in the ice contribute to the formation of chips and gouges on the blade.

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

Homemade ice drill machine: what is needed to make it?

For the manufacture of such a device 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 she is very hard to bend.

Progress

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

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 your knives in the water more often. This will help prevent overheating of the steel.

Minus the device

Making a universal fixture for sharpening an ice drill

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

How are planer knives sharpened?

Devices such as planers and thicknessers can often be seen in country houses. By means of them, raw lumber is brought to the desired state. Knives of these devices, like any others, become dull. If you use them often, then the best way out is to sharpen the knives for the planer with your own hands. For the manufacture of grinding equipment at home, various materials will be required: metal, aluminum or wood.

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

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Pribluda for sharpening knives jointer-thickness gauge

Good day.
I decided to revive the blunt knives for the R-102 planer, and at the same time think about the future sharpening of knives for the planer-thickness gauge Caliber SSR-1280.
I don’t have a sharpener for these purposes, but I’m too lazy to regrind.
I went through foreign sites on the Internet, and found such a useful device.

The toad didn’t give 37, so I decided to build a similar device from improvised materials. I am attaching the drawing. Lucky for me, pieces of a board sawn lengthwise at 45 degrees were left from old projects ( saw machine did not need to be unpacked). In the nearest hardware store 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, 2х800 grits)

Total came to 49 rubles.

Sharpening planer knives was complicated by the fact that native sharpening was made with a noticeable concavity. Therefore, it took quite a long and dreary sharpening on a large skin until it was leveled. To speed up the process, I decided to sacrifice the sharpening angle and make it more blunt, about 45 degrees, which is the most for pine.
Concavity, by the way, on different sides of the knife turned out to be different. The other side had to be sharpened less, immediately walked through the 800th skin of the razik 30-40 - and you're done.
Yes! I didn’t have a suitable glass, but there was an old Soviet countertop from kitchen table With plastic coated— pretty even for the intended villainy.

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

Registration: 29.10.2005 Moscow Posts: 9197

09/08/2009 at 13:50

Goryn wrote.
I decided to revive the blunt knives for the R-102 planer

this comes with the Makita planer.

Registration: 18.03.2009 St. Petersburg Posts: 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

07.10.2009 at 20:49

How do you sharpen the teeth of a carbide-tipped saw blade?

Registration: 20.01.2010 Roslavl Posts: 27

01/20/2010 at 22:20

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