Sharpening of a saw on metal from a file. Clamp

With your own teeth, or how to sharpen a saw with your own hands

The main cutting element of any manual saw. A number of teeth cut out on canvas and representing incessors in the form of wedges. In the manufacture of all types of products from it, wood is sawn along, across and at an angle of θ to its fibers, in this regard, the transverse, longitudinal sawing and sawing at an angle to its fibers and in each case use the corresponding type of saw, except for other forms teeth.

The transverse saws are used for the transverse cuts, the cutting edges of the teeth of which, moving along the tree, cut its fibers like a knife and form an incision. The longitudinal cut differs from the transverse in that the direction of movement of the saw parallel to wood fibers. The front edges of the teeth of the longitudinal saw plan a tree like knives when strict and, deepening, form an incision. When sawing wood at an angle θ to its fibers, universal (mixed) saws with teeth are used, which are an intermediate shape of the teeth of transverse and longitudinal saws.

Sharpening of the saw

Sharpening of dentition. A type of art that requires fidelity of hands, a good look, attention. It is not difficult to study this case, you need to have a desire and strictly adhere to the following rules:

  • The saw disk should be rigidly fixed in a special wooden device, which is also firmly installed on a well.lit desktop. Sharpening of tooths from pollen on a chair or on the knees does not give a satisfactory result.
  • You should use a personal file with the subsequent cleaning of pointed edges of the teeth with velvet (with a small recess) or a file. It is desirable that the file is new, sharp and with the installed handle. If this was not so at the right time, you can use the used, but always cleaned with a steel brush and rubbed with coal so that the file is not clogged and not blurred. During the sharpening of the tooth, the file should cling to its metal and remove its layer, depending on the pressure. And if it slides along the tooth without removing the metal, the teeth of the saw overheat or wear out. In this case, you need to repeat the sharpness with a new file. If in this case it slides along the tooth, you need to take another saw.
  • The handle of the file is clamped by the right hand, the end is held with the left hand, and the file is directed to the teeth of the saw. Working with the file is described below, depending on the type of saw.
  • The pressure on the teeth should be even, even and only in one direction from you. When the file returns to its original position, it should not touch the teeth.
  • You must try to polish the metal from the edges of the teeth of at least the same thickness, setting the saw in motion so many times with the same pressure, which allows you to save the corners, step and height of the teeth after sharpening.
  • On the sides of the tooth on the output of the file, burrs are formed, which reduce the sharpness of the tooth, and if they are not removed, then during the saw they are abandoned, and the teeth become significantly boring. To remove burrs, the edges of the teeth are crushed with a file with a velvet neckline, and the burrs are removed from the side surfaces with a wet donkey.
  • Having sharpened your teeth, check their sharpness. Look at the tip of the needles and at the blade of the razor: they, pointed, do not shine in the light. And if you dull them, rounded surfaces will appear on the tip of the needle and on the edge of the blade, which reflect the light and shine well. The quality control of sharpening of teeth saws is based on this principle. To do this, place the saw before your eyes and inspect your teeth along the blade. If their cutting edges and peaks do not glow, the teeth of the saw are satisfactorily sharpened, and if part of the teeth is glossy (this often happens), they should be polished with a velvet file, remove the burrs and again check the reflection with their edges and ends.

Read does not start a Chinese chainsaw

The teeth of the transverse saws are polished by a trihedral saw with a small cut at an angle of 60 °.

For sharpening the teeth, the saw is clamped in a special device, which allows you to install its blade at an angle of 45-50 ° to the plane of the desktop. The saw is parallel to the desktop at an angle of 60-75 ° to the saw, and the left edge A is pointed in the first tooth1I2V2V1.

Sile the teeth of a saw a few steps. Firstly, the file runs along the left side of the unpaired teeth located in the far row, setting up hands on the same movement. Then they pass the file along the right side of the same strange teeth, completing the sharpening of the main cutting edges with very sharp tips. After the sharpening of odd teeth, the saw disk in a grinding machine is turned over, and thus, straight teeth in the far row are cut. When sharpening the teeth of transverse saws, it is necessary to carefully ensure that each tooth has acute main cutting edges with a dined angle φ = 60-75 °, a short cutting edge and an acute tip.

Let’s look at the material on how to sharpen a saw on a tree or sharpen a circular saw.

The transverse two.handed saw

The transverse saw is the largest representative of manual saws. The length of this tool reaches almost two meters. There are four standard sizes:

The most popular teeth length is 20 mm. Even a saw of the smallest size weighs quite a lot and work alone is quite problematic.

Today, many firms produce such saws, they all differ slightly from each other. Some of the copies have teeth of a classic, triangular shape, the angle of sharpening is approximately 70 °. However, masters prefer to adjust the angle of sharpening for themselves. It all depends on wood, for example, soft wood in the summer is more convenient to saw from the angle of sharpening of teeth to 35 °. At the same time, in the winter or subject to sawing dry timber, it is worth sharpening teeth at an angle of 50 °.

sharpening, metal, file, clamp

Long saws (1.5 m and 1.75 m) are created for sawing lumber. The teeth in such devices are characterized by a complex shape-between two m-shaped (Kremlin) cleansing teeth are 2-3 ordinary, characteristic of transverse saws. They pull and bred them accordingly. These teeth during the cut cut the fibers, and the cleansing m-shaped teeth remove particles of wood from the cut. Here an important point is the fact that the teeth of a complex shape should be on a fraction of a millimeter above simple teeth. If you lower this nuance and reduce all the teeth to one height, then the m-shaped elements will break the material, as a result of which the sawing is significantly difficult. At the same time, if you make too significant the difference, then the cleansing teeth will not cope with the removal of sawdust from the saw.

Sharpening with a machine

If there is an opportunity to purchase a special machine, then the process in question can be carried out with the maximum performance indicator. Such a device has compact dimensions, it can be used at home.

Particular attention is paid to the choice of an abrasive circle. In this case, we note the nuances below:

  • Cooled disk is difficult to sharpen.
  • When choosing, you should pay attention to circles from an elbor, with diamond chips or with green silicon carbide.

The sharpening process when using professional equipment is very simple. The disk is mounted using a special latch. It was created with the calculation of the design features of the circle. We will pay special attention to the fact that when using special machines, it is very easy to sharpen disk saws with withstanding the necessary indicators. In this case, the error is minimal. This is due to the fact that the design has a special angle meter. In order not to make a mistake at the time of work with which teeth were already processed, you should use the starting point using the marker.

If you find an error, please select a fragment of the text and click Ctrlenter.

During prolonged operation, disk saws with carbide attacks can lose their original qualities. But this does not mean that you should purchase a new cutting tool. In most cases, sharpening can be performed at home using any suitable machine.

How to determine the angle of sharpening of a disc saw

Geometry of carbide attacks

The best option will be the presence of the initial template, according to which you can correct the geometry of the cutting edge. Often it is made of thin.walled stainless metal, less often from dense cardboard.

Chards teeth are made according to GOST 9769-79. But their geometry and geometric dimensions are determined by the manufacturer based on the purpose of the saw. If the template is absent, it is necessary to independently determine the required sharpening angles. To do this, it is recommended to use a pendulum carpet. manufacturing technology.

  • Take a new disc with attacks, which is completely identical.
  • On a solid sheet of cardboard, draw exact contours.
  • Using a pendulum angular, determine the initial geometry of carbide attacks.
  • Data to put on a template.

In the future, it can be used for independent sharpening on the machine or provided as a sample for companies providing such services.

Additionally, it is recommended to compare the obtained data with the reference. In saws for longitudinal cutting of the cut, the front angle is usually 15 °.25 °. For transverse models, this indicator ranges from 5 ° to 10 °. In universal models, the front angle is 15 °.

It is important to remember that the front angle can be negative. Similar models are used for cutting plastic sheets and non.ferrous metals.

Pilary wiring

During the breeding of the saw, one should not forget about the uniformity of bending all the teeth at the same angle so that there is no increase in the resistance of the broke and high wear of the metal. Start to bend the teeth from the middle. If you try to bend them at the very base, you can damage the blade. The teeth are deviated from the canvas through one, that is, every one teeth to the left, every odd to the right. Visually and without the use of tools, only an experimental carpenter can determine wiring. Such skills come only after breeding of teeth in many dozens of hacksaws.

sharpening, metal, file, clamp

In the absence of such experience, a special tool comes to the rescue. The most affordable option is the usual flat plate of steel. It makes a gap, into which the habits should be included in virtually no gap. The wiring process is performed as follows:

  • The hacksaw is clamped so that the teeth are a little visible above the clamp;
  • Each tooth is clamped by the wiring groove and bend to the middle;
  • The angle of dilution should be under constant control;
  • Each even tooth is bent to the left in a row, then every odd one. to the right or in the reverse order.

At different heights of the teeth, sawing wood will not be effective, since the teeth of a larger height will wear out more due to a greater load, and teeth of a lower height will not take part in work at all. The links of the canvas will be uneven, twitching. There will also be claims to the accuracy of sawing and the quality of the surfaces of the sections. To align the teeth in height is necessary before sharpening. The height is checked as follows:

  • The teeth are pressed against the paper that lies on a flat surface;
  • The canvas is printed on it;
  • The height of the teeth is determined by the profile of the print.

To align teeth with a difference in height, the canvas must be clamped in a locksmith and an excess metal. If the teeth have a greater difference in height, you need to choose the average value and try to adjust the maximum possible number of them to it.

How to sharpen a hacksaw?

To make sharpening with minimal loss of time and quality, you need to use such special devices and tools as:

  • Workbench;
  • locksmith vice;
  • Passatigi;
  • grinding beam;
  • sandpaper;
  • Transporter and caliper;
  • a hammer;
  • It is possible to use equipment that allows you to fix the hacksaw cloth with an angle of 90 or 45 degrees.

Be sure to use the following files:

Having grinded a hacksaw on wood, a simple vice is also used, which is quite uncomfortable and long, as well as a multi.hobby vice, since their bed is rotated and fixed at the necessary angles to ensure the movement of the tool strictly in the horizontal plane. It is recommended to organize additional lighting of the working space using electric lamps. Throughout the sharpening time, the file/file should move without jerks, it is necessary to provide constant pressure, movements should be made without deviations from a constant angle. The sharpening process goes only by the movements of the file “from yourself”. You need to return the file/file by air, while contact with the hacksaw should be absent.

Hacksaws are used for various purposes. The wood is sawn along or across the fiber. Accordingly, the teeth will also differ.

Tearing of the teeth of the transverse saw

When sharpening such teeth, a small.rope three.sided file is used. Tool movement direction. angle of 60 degrees. The hacksaw is fixed in the device at an angle of 45-50 degrees to the workbench. The file/file should be driven strictly horizontally (preserving the angle of 60–75 degrees to the hacksaw), starting sharpening from the first left tooth. You need to start with “setting up the hand of the hand with the tool”, for which they are carried out along each left edge of the odd row of distant teeth, which will give the movements of the hands the desired automatism. After that, the same is repeated, tightening the right faces of odd teeth to complete the sharpening of the cutting edge and pointing the peaks. Having finished sharpening the teeth of the odd row, the hacksaw is turned over in the fixing device and repeat the same actions for a certain row, which is in this position a distant row.

Hacksaw for longitudinal sawing

The teeth of the longitudinal sawing of the longitudinal sawing have an angle of less than 60 degrees, so they use subfilles with large notches or a small.lowering file of a rhombic section. files in this case are strictly not recommended. For sharpening, a hacksaw is vertically fixed in the device. There are two methods to sharpen a hacksaw that differ in giving various angles of sharpening.

  • Straight. Nadphil/file is placed at an angle of 90 degrees. A direction parallel to the hacksow is given to him, both the rear and front cutting surfaces of each teeth are focused. This is repeated for the entire far row of teeth. Then the hacksaw is turned over in a clamping device 180 degrees and repeated the same operation for other teeth that will be a long row.

How to Sharpen Metal Files

  • Spit. This method differs from the straight one only angle of direction of the tool to the plane of the canvas. the angle of sharpening decreases from the straight to 80 degrees. The process occurs in the same way, but the teeth after sharpening resemble the teeth of a ray saw.

Kryatovka mixed type

If it is necessary to restore the severity of the teeth, large.sized notches are used or with fine.waisted files of the rhomboid section. For hacksaws of a mixed type, there are the same two options as for longitudinal and transverse hacksaws. They are distinguished by slightly different sharpening angles (respectively, 90 and 74–81 degrees).

Wrestling of teeth

The teeth are rejected from the plane of the blade in a checkerboard pattern, for example, all even left, all odd to the right. Only very experienced carpenters are able to breed wood on the eye. This skill comes after several hundred diluted saws. Less experienced craftsmen better use a special tool. wiring. The simplest version of the tool is a flat plate made of durable metal with a slot, which is the canvas in a minimum gap. The saw canvas should be clamped in a locksmith. The teeth should perform a little from the lips. The teeth one by one are clamped in the groove of the instrument of the plate and bend in the middle part. The wiring angle is required to constantly control. First, all even teeth are bent in one direction, then all the odd ones. in the other. At the end of the wiring, you can dilute the sponges into the width of the wiring and stretch the canvas between them. If any of the teeth is bent more than necessary, they will hurt for a vice. They need to be fixed.

Fabric with hot teeth are not subject to wiring.

Alignment of height

With different heights of cutting teeth, the effectiveness of wood work is greatly reduced. Higher assumes a greater load and undergo accelerated wear, and lower ones do not participate in the cut. The broach becomes uneven, twitching. The accuracy of the cut and the surface of the cut surface are reduced. Alignment of the height of the teeth is supposed to be carried out before sharpening the blade. Check the height as follows: the canvas is pressed to a sheet of paper lying on the table. The profile is printed on the sheet, and by the print, you can determine the height of one or another tooth. To equalize a different height of the teeth, the canvas must be clamped in a locksmith. The teeth protruding over others are subject to grinding with a file.

Device for aligning the height of the teeth

How to sharpen a hacksaw on wood

To restore the previous severity of the teeth, it is necessary to sharpen them. During and after sharpening the teeth should have the initial height and the step of the angles.

It is necessary to take into account the moment that not every hacksaw is subject to grinding. For example, a tool with small teeth is undesirable. In addition, “hot” teeth are not dragged. To find out exactly what kind of teeth your hacksaw has, you need to carefully look at their color. If they have a dark color, closer to the black, with a blue tint, then the metal is

If there is a need to restore the severity of hot teeth, you can use a file with a small notch.

Description of the sharpening process

Consider in more detail how to sharpen a chain of chainsaw. The first thing to do is prepare a place for installing a clamp, or if the process goes without it, it is convenient to use a regular log as an stop for fixing the tire in a horizontal plane. The chainsaws are installed on a flat surface, the log is placed under the tire, the brake is turned on.

To avoid injuries when sharpening a chainsaw, be sure to turn on the brake of the saw chain.

The next stage is direct sharpening of the tooth. To do this, with a round file, movements are made from the inside of the tooth to the external.

It is very important at this moment to maintain the right angle of sharpening. The standard angle is thirty degrees from the perpendicular location of the file to the tire plane. How to arrange it correctly shown in the photo below.

In the process of sharpening a chainsaw for non.standard cut, for example, longitudinal. The sharpened angle changes to a less acute. As a rule, it is no more than 10 °. It is in such cases that a holder, manual machines or sawing calibers are used to control the angle of sharpening.

Some manufacturers of chain chains, to facilitate sharpening, as well as to indicate the maximum possible sharpening, make a special label on the upper surface of the tooth.

Holding the file parallel to the mark, you can be sure that the correct angle is observed.

The number of working movements with a file should be the same for each tooth. This will allow all the teeth evenly grinding.

In the process of editing the chain, it is customary to sharpen the teeth on one side first, and then on the other, it is convenient. to. there is no need to constantly change your location in relation to the chainsaw.

After the working teeth are sharpened, it is necessary to adjust the height of the restrictive tooth a flat file. To do this, the supporting caliber is laid on the chain so that the restrictive tooth coincides with its slot, after which the protruding part is grown by a file. This procedure is performed for all restrictive teeth.

The use of roller devices

Sharpet device, with which you can quickly and efficiently correct the teeth consists of a small guide template, on which two videos are installed.

How to Sharpen a Hand Saw | Ripsaws

By installing the adaptation on the tire, you can sharpen the teeth of the chainsaw, without even the experience of conducting such operations.


For those who are just learning to hide the chain of chainsaws on their own, it will be useful to take into account several basic tips for the correct conduct of this process.

  • With any manipulations with the chain, the engine must be drowned out, in no case is it acceptable to tighten the chain of the chainsaw on the started saw.
  • The chain before sharpening must be pulled up to a normal working condition.
  • The brake of the saw chain during its editing should be installed in the working position.
  • During the sharpening of the chain, to protect against cuts with sharp edges of the teeth, it is necessary to use gloves.
  • Compliance with the same number of movements with a file, guaranteed to ensure uniformly grinding all teeth.

Below you can see how to sharpen the chain of the chainsaw with a file in the video, it describes in detail what files you need to use. How best to place a chainsaw. And of course, how should a sharpening tool be located in relation to the saw bus.

Finally, I would like to note the main advantages of sharpening with a file, compared with the amendment of the chain in the machine.

Storage tips

Any tools, if it is stored incorrectly, will quickly become unusable. This also applies to files for the saw chains. They are made of steel, which, although rather solid, is very fragile. Even if you simply transport several files together, which in the process will come into contact with each other, you can damage them, which will negatively affect the working parameters.

Factory sets are stored in a special case. So they are in optimal conditions for themselves. If the file is polluted, it is easy to restore, it is enough to use a hard brush and a special flushing for this. The latter is made from the dishes.

You can use acetone for oil removal or unhealthy gasoline.

About how to properly sharpen a chain of a chainsaw with a file, watch in the next video.

Other options

The saw chain can be sharpened with other improvised tools. Acting correctly and sequentially, you can achieve good results even without a machine. The main difficulty here is that to fix the working area, as well as withdraw the desired angle when working with a power tool on weight is almost impossible.

corner grinder (angular grinder)

Despite the fact that this method is often mentioned as an alternative to the machine.sharpening of the chain, it is difficult to recommend it for use. Even experienced masters cannot cope with tasks perfectly. What can we say about newcomers. The difficulty with fixing a certain angle of sharpening requires the use of auxiliary devices.

The corner grinder can be fixed in a vice, stationary, and then handed the teeth to the surface of the rotating disk, but this approach can lead to serious injuries with non.compliance with safety precautions.

Difficulties when using corner grinder include a high risk of rupture of the chain. With any careless movement, the cutting element angular grinder can damage the hinge connection. In this case, the dispensed section of the chain will fly off arbitrarily, increasing the likelihood of an injury for a master that performs the work. The sharpening process consists in the supply of the chain to the saw disk. The duration of contact is best done as on the machine. This will reduce the risks of metal overheating. It is better to leave the chain on the tire, as with manual sharpening. The rest of the procedure will be the following.

  • A disk is installed on the corner grinder. It is better to choose a cut.out circle for metal work with thickness indicators up to 2 mm.
  • A buffer is installed between the chain and the tire. You can take a piece of chips or other improvised material.
  • Sharpening is performed. It is important to measure the desired angle in advance.
  • The tacing of the chain. It will be needed after sharpening in any way.

The sharpening of the teeth of the chainsaw using angular grinder has obvious advantages. This is the speed of work, the lack of additional costs, if the tool is already available. The disadvantage is also quite obvious. too high risks, it is necessary to carefully observe safety precautions when working with a corner grinder.

Drill or drill

Using this type of tools involves the work by analogy with manual sharpening. Mechanization allows you to slightly accelerate the process. But here you need to monitor the exact positioning of the work area. For use in combination with a drill and a drill, special sharpeners are available, including the following equipment elements:

The rag of the replaced file is fixed in the cartridge of the power tool. It is selected in diameter, taking into account the corresponding step of the saw chain. After that, the equipment is installed on the drill or drill, its adjusting screw is weakened. It is aligned and fixed along the ruler.

The tool is brought to the tooth of the chain, the rotation of the tip is activated. Nadfil, as with machine processing, grinds all sides of the tooth at once. The average duration of the entire tape is no more than 15 minutes.

sharpening, metal, file, clamp

over, the accuracy of the effect is very high.


Before proceeding to sharpening, it is worth making sure that the saw is really necessary. There are 5 simple assessment criteria that can confirm this.

  • Reducing the size of sawdust flying off during operation.
  • Improving the efforts attached during the use of the tool. It becomes noticeably more difficult to saw.
  • Bouncing, uneven chain stroke.
  • The appearance of obvious signs of displacement of the geometry. It just “takes” him aside.
  • The smell of burning, the appearance of smoke from under the chain.

Continuation of the work with a pointed tool, whether it is an electric or gasoline unit, threatens not just by reinstalling a shift element. In some cases, overloads disable much more expensive nodes, which will not be so easy to change. Another important point is to check the quality of sharpening at the end of the work. There are also obvious criteria here, which show that the chain is completely ready for work.

It is important to achieve the severity of not only the upper, but also the lateral cutting edges. The corners of all teeth should be the same, as well as their length. These parameters are determined by the manufacturer of the tool. The angle of sharpening is selected based on the method of sawing wood. During a transverse saw, it is made in the range from 25 to 35 degrees. With longitudinal enough and 10.

It is worth paying attention to the depth limiter. Its indicators vary in the range from 0.5 to 0.8 mm, but it is better to rely on the recommendations of the manufacturer, sometimes the recommended parameters differ from the standard. The depth limiter affects the level of tool performance, with a decrease in indicators, it decreases. It is also not worth exceeding the recommended values, because during operation, vibration will be strongly felt.

Among the useful tips given by specialists in sharpening saws, the following recommendations can be distinguished.

  • Service of the chain after work. It is worth blowing it with compressed air, and then plunge into the engine oil for a while (clean, not working out). This will significantly extend the term of operation of the chain.
  • Selection of time for It is carried out first at low speeds, within 60 seconds. This time is enough for the lubricant to be evenly distributed, and the asterisk and links warmed up, got sick. After that, the circuit is cooled, it is re.adjusted and tension.
  • Following the operating rules. When sawing after sharpening, it is important to avoid the inclined position of the chain. If necessary, it is necessary to periodically adjust the tension of the links. Under load they can sag.
  • Periodic processing in a machine way. Even if you restore the severity of the teeth in the “field” conditions by a file or drill, if such an opportunity arises, it is worth performing a full.fledged metal processing. The machine provides higher geometric accuracy, makes it possible to straighten the defects that arose when working with the tool.
  • Control of grilling teeth. After 3-4 operations to restore their severity, it is worth checking the suitability of the chain for further operation. Changing the depth of cut and other defects will indicate that the element requires replacement, not recovery.

Important recommendations for the sharpening of the chain saw include the use of protective equipment.

Be sure to protect your eyes with shields or glasses, carry out work in gloves. Injury, especially with instrumental sharpening. is not uncommon.

About how to properly sharpen a chain of chainships with your own hands, watch in the next video.

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