A device for sharpening jointing knives with your own hands. How to sharpen jointing knives with your own hands? How to sharpen planer knives at home

Manual jointer Since ancient times and now it is actively used in carpentry work. 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 jointer 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 at the desired 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 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 soft steel, the jointer knife sharpening angle should be 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.

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 use are 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 layer of metal. Industrial machines Allows you to simultaneously sharpen several planer blades without changing settings.

Dedicated to the owners of planing, jointing machines and electric planers.

Every owner of planing machines, jointers and electric planers was faced with the need to sharpen knives for their equipment. Having a specialized small machine To sharpen planing knives, it will not be difficult for you to do this. It would also be a good idea to go to a sharpening workshop where your planing knives can be sharpened quickly and inexpensively.

Is it possible sharpen planer and planer knives at home.

Maybe. And you can sharpen planing knives on a sharpener. Yes, on the grindstone. But for this you will need a modern low-speed sharpener (or rather, even a sharpening machine) with water cooling. The best option is to use Tormek T7. Naturally, such knives are not sharpened by hand. To sharpen them we use a special tool Tormek SVH 320.

For high-quality sharpening Planer knives require a smooth and ungreasy sharpening stone. Let's level the Tormek SG 250 sharpening stone using the tool for leveling and dressing the Tormek TT-50 sharpening stone included with the Tormek T7.

After editing, we smooth the sharpening stone using a whetstone for cleaning and leveling the sharpening stone Tormek SP-650.

Having prepared the sharpening stone, we will begin sharpening the planing knives. We remove the universal stop and install the special stop that comes with the Tormek SVH 320 kit.

We screw a screw into it that regulates the angle of inclination of the knife being sharpened relative to the sharpening stone. With this screw we can later set the required sharpening angle.

We take the blade holder included in the SVH 320 kit and install our planing knife into it.

The manufacturer Tormek recommends sharpening blades and knives with a width of at least 13 mm. The length of the knife is not so important, because... It is possible to rearrange the long knife in the holder. However, one can argue with this, because... I have doubts about the convenience and quality of sharpening long knives with rearrangement. It is very important to install the knife correctly in the holder, because... otherwise it will be sharpened skewed. When installing the knife into the holder, rest the back of the knife against the stop and clamp it with the screws of the holder.

To accurately set and control the set sharpening angle, use a marker to paint over the sharpened chamfer of the knife.

Now, based on the nature of the marks of the sharpening stone on the painted blade, we can estimate the angle of inclination and adjust it in the necessary proportions.

We install the holder with the knife on the stop mounted on the Tormek. Using the adjusting screws of the stop, lower the holder with the knife until it touches the sharpening stone.

Use the angle adjustment screw to set the angle of the knife relative to the stone. By manually rotating the sharpening stone, we determine by the nature of the marks on the painted blade whether it is necessary to adjust the angle of inclination of the knife holder. If necessary, we make adjustments.

So, having set the required angle, we proceed directly to sharpening. For fixed removal of metal from the knife being sharpened, there are two sliders on the stop with a scale division of 0.1 mm. It is assumed that the sharpener can adjust the amount of removal in precise proportions. After each feed, be sure to securely fix the stop with two clamping screws so that there is no fluctuation of the stop during sharpening.

Sharpening the knife is carried out by moving the holder with the knife to the right and left relative to the sharpening stone.

It is not permissible for the knife being sharpened to extend beyond the edge of the sharpening stone. It is recommended to stop the holder 12 mm before the edge of the circle. To eliminate errors, stops are provided that can be moved and the required stroke of the holder can be set. We did not use these stops, relying on our experience.

It should be noted that during sharpening of a planing knife, water accumulates and distributes on the knife blade from the sharpening stone, which leads to water draining onto the body sharpening machine and on the floor. And a lot of this water flows down. Therefore, it is necessary to regularly add water to the Tormek water tank. To reduce water spillage on the body, it is recommended to place a 6 mm high pad under the right leg of the machine (under the leather honing wheel).

However, this measure does not completely prevent water from entering the Tormek T7 case. However, Tormek T7 has good protection and he is not afraid of such water baths.

Another problem when sharpening a planer knife was that the SG 250 stone constantly became greasy, which reduced the efficiency of sharpening and increased the sharpening time. I had to clean it regularly with a whetstone to clean and level the SP-650 sharpening stone. It certainly has great value what material is the knife made of? In our case, the knife was sharpened from HSS steel and this stone I had to edit constantly. When sharpening knives made of tool steel (softer steel), more intensive removal of chalk occurs and sharpening occurs faster. To sharpen HSS knives, it is recommended to use another stone: Tormek SB 250.

So, after 20 minutes of sharpening, we have an even, smooth, beautiful bevel of the knife with a stable, even burr on the cutting edge.
The knife requires fine-tuning. We polish the planing knife on a Tormek T7 leather wheel using Tormek PA-70 finishing and polishing paste.

First we bring the working plane of the knife, then its chamfer. We ensure that there is no burr left on the cutting edge of the knife. Once the burr is removed, the knife is sharpened and ready to use.
After sharpening, we checked the geometry of the knife. The knife had strict parallelism cutting edge and backs. Even despite the fairly large sharpening angle, the knife we sharpened cut a sheet of paper perfectly.

Let's summarize:
1. To sharpen planer knives there is no need to have complex and expensive machines. It is enough to have a Tormek T7 and a special tool Tormek SVH 320
2. After sharpening on the Tormek T7, you get a high-quality sharpened planing knife with unchanged geometry.

Identified deficiencies:
1. During sharpening, water pours abundantly from the knife being sharpened onto the work table and the body of the machine, which causes some discomfort. Even resorting to certain tricks cannot completely get rid of this inconvenience.
2. The Tormek SG 250 sharpening stone gets dirty regularly and requires cleaning and leveling using a Tormek SP-650 whetstone. There is an assumption that if you use Tormek SB 250 stone, this problem will be eliminated.

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 has its own negative impact have abrasive particles that are present in the cut material. 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 is to eliminate damage to the blade. It should be noted that for many, such a procedure as sharpening knives provides good location spirit and peace.

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 being sharpened 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.

Making a machine for sharpening knives with your own hands

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, is to hold the knife blade in vertical position and driving 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 couple of bots with lambs. 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 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.

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 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.

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, 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.

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

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 serves as a guarantee of 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 casing square shape 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 cases when experienced fishermen, 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 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 in different 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.

Work 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 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

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, a universal device is suitable.

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 attached with screws, you can fix desired position knives in relation to the plane whetstone.

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, the shoulders are drilled additional holes for knives of non-standard type. In this case, the device has greater versatility.

How are planer knives sharpened?

Equipment such as planers and surface thicknessers 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 wooden block. By making cuts at 45 degrees using a circular saw, you can sharpen the knives with a band saw. grinder or a large block. If the latter is not present, then smooth surface made of metal, wood, chipboard or glass, sandpaper is attached.

Knife holders can be made from scrap materials. The optimal solution will be the use of metal corners that have an indicator 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.

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Every carpenter knows that a well-sharpened tool is a guarantee high-quality processing 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 a 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.

Sharpening jointer knives

The hand jointer has been actively used in carpentry since ancient times and is now widely used. And since then, special attention has been paid 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 jointer 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 at the desired angle. For those who have less experience, there are a lot of devices, electrified and manual. Since machines for sharpening and straightening blades are expensive, hand tools are most often used. 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.

Attention, TODAY only!

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 a sharpening machine in which the emery or knives will move. There are plenty of such proposals and projects on the Internet. Moreover, various materials such as metal, aluminum and wood are suitable for the manufacture of such a machine.

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

Knife holders, or rollers for sharpening knives as they are called, can be made from scrap materials, but are best suited metal corners, which have 90 degrees, if you place two knives on the sides, then each knife has a sharpening angle of 45 degrees. 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

Dedicated to the owners of planing, jointing machines and electric planers.....

Every owner of planing machines, jointers and electric planers was faced with the need to sharpen knives for their equipment. Having a specialized small machine for sharpening planing knives will not be difficult for you to do this. It would also be a good idea to contact a place where your planing knives can be sharpened quickly and inexpensively.

Is it possible sharpen planer and planer knives at home???

Maybe. And you can sharpen planing knives on a sharpener. Yes, on the grindstone. But for this you will need a modern low-speed sharpener (or rather, even a sharpening machine) with water cooling. The best option is to use . Naturally, such knives are not sharpened by hand. To sharpen them we use a special device.

For high-quality sharpening of planer knives, a smooth and non-greasy sharpening stone is required. Let's align the sharpening stone using the tool for leveling and straightening the sharpening stone included with the Tormek T7.

After dressing, smooth the sharpening stone using a whetstone to clean and level the sharpening stone.

It should be noted that during sharpening of a planer knife, water accumulates and distributes on the knife blade from the sharpening stone, which leads to water draining onto the body of the sharpening machine and onto the floor. And a lot of this water flows down. Therefore, it is necessary to regularly add water to the Tormek water tank. To reduce water spillage on the body, it is recommended to place a 6 mm high pad under the right leg of the machine (under the leather honing wheel).

However, this measure does not completely prevent water from entering the Tormek T7 case. However, Tormek T7 has good protection and is not afraid of such water baths.

Another problem when sharpening a planer knife was that the SG 250 stone constantly became greasy, which reduced the efficiency of sharpening and increased the sharpening time. I had to clean it regularly with a whetstone to clean and level the SP-650 sharpening stone. Of course, it is of great importance what material the knife is made of. In our case, the knife was sharpened from HSS steel and this stone had to be constantly sharpened. When sharpening knives made of tool steel (softer steel), more intensive removal of chalk occurs and sharpening occurs faster. It is recommended to use a different stone to sharpen HSS knives.

So, after 20 minutes of sharpening, we have an even, smooth, beautiful bevel of the knife with a stable, even burr on the cutting edge.
The knife requires fine-tuning. We polish the planing knife on a Tormek T7 leather wheel using finishing and polishing paste.

First we bring the working plane of the knife, then its chamfer. We ensure that there is no burr left on the cutting edge of the knife. Once the burr is removed, the knife is sharpened and ready to use.
After sharpening, we checked the geometry of the knife. The knife had a strict parallelism between the cutting edge and the back. Even despite the fairly large sharpening angle, the knife we sharpened cut a sheet of paper perfectly.

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 planer's blade shaft, 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 has or cutting sheets hacksaws 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 surface restoration cutting tools and some recommendations.

To keep jointers, planers, and hacksaws in working order, assemble or purchase an appropriate sharpening device.
The simplest one budget option is a whetstone. But the quality of processing directly depends on your skills in working with stone. If there are none, it is extremely difficult to achieve the required level of sharpening. 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. Since sharpening machines are electrical accessories, provide the possibility of draining water from your feet, work in rubber shoes. In any case, standing in a puddle of water when working with electric machine- it's always dangerous. Follow safety regulations.
Keep the whetstone clean. It gets dirty quite quickly with active use.
Are being cleared grinding wheels machines 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.