How to sharpen your saw chain correctly
Chain Teeth Parameters
To achieve optimal cutting properties, the tooth blades are given specific angles. The back of the tooth falling back at an angle forms the posterior angle of the upper blade. This angle is needed to cut the upper blade into the wood.
The backward tapering blade of the tooth forms the back angle of the end blade. This angle is needed for side cutting of the chips.
The edge of the end blade forms a rake angle with the sliding surface of the cutting link. Front angles for different types of chains vary from 60 ° to 85 °.
The back angle of the upper blade characterizes the backward tilt of the upper blade.
This angle is measured relative to the sliding plane of the cutting link and, depending on the type of saw chain, ranges from 50 ° to 60 °. The top blade is the main blade and the back corner of the top blade. this is the most important corner. The clearance angle of the upper blade is difficult to measure, the correct value is obtained by observing other prescribed values.
The sharpening angle or entering angle is obtained by measuring from the top cutting edge at right angles to the guide bar.
The sharpening angle can be changed, depending on the application. Rule of thumb: the larger the sharpening angle, the higher the cutting performance when cutting non-frozen softwood. Reducing the angle of sharpening when cutting frozen and / or hard wood contributes to a smoother saw blade and less vibration. However, sharpening angles greater than 35 ° and less than 25 ° should be avoided (except for rip chains where this angle is 10 °).
The rake angle, sharpening angle and upper blade angle change when sharpening. These angles have a decisive influence on the cutting performance of the chain. Be sure to observe the prescribed values.
A depth stop is located on each cutting link in front of the tooth scapula. The difference in height between the top edge of the depth gauge and the front edge of the back of the tooth is defined as the distance of the depth gauge.
The depth of penetration of the upper blade into the wood (chip thickness) and thus productivity depends on the distance of the depth gauge. The distance of the depth gauge is set depending on the chain pitch and the type of execution. Normally, it should be 0.5-0.8 mm, more often 0.6 mm. High values will lead to an increased tendency of the chainsaw to kickback, too much grip and chain vibration. Low values lead to a drop in performance. Since the distance of the depth gauge decreases with each sharpening of the saw due to a decrease in the upper edge of the tooth, the depth gauge also needs to be filed periodically. after 5-10 chain sharpenings.
The round file holder has a mowing line that allows it to be correctly positioned in relation to the chain. The holder fits onto the sharpened tooth in accordance with the line orientation. In this case, the insert itself rests on the upper edge of the tooth and the depth gauge, and the file is located under the cutting edge.
The use of a holder ensures that the file will fit to the tooth at the correct height. There are different tool holders for different pitches of the saw chain. The correct choice of holder, combined with the correct file diameter, ensures that the file protrudes over the back of the tooth by 1/5 of its diameter. Use only special saw chain files.
Before sharpening the chainsaw chain, it is advisable to secure the bar. When sharpening, it is necessary, while maintaining the position of the holder and pressing the file to the sharpened edge, to make several (2-3) turning movements away from you. Do not try to press too hard on the file, the movements should be smooth and measured. Rotate the file regularly to avoid one-sided wear. All other teeth are sharpened in the same way. It is more convenient to first sharpen the teeth in one direction, then change the position and do the same with the teeth in the other direction.
When sharpening all teeth, do the same number of strokes with the file at the same pressure. This will result in the same tooth length. All cutting teeth must be of the same length. Different tooth lengths cause uneven chain running and cracking. If the length of the teeth is not the same, all cutting teeth must be filed to the length of the shortest tooth.
After several sharpening of the cutting teeth, the depth gauge is ground. To do this, a template is superimposed on it so that the stopper falls into the slot, and the tip protruding from the slot is grinded with a flat file.
The principle of using another set for sharpening chainsaw chains does not differ from the first, although its design is different.
A round file is also used to sharpen the cutting tooth, and the depth gauge is used to sharpen the depth gauge. flat. A special template provides parameters for sharpening both cutting teeth and stops. In the first case, it is superimposed on the chain in such a way that it falls into its slots. The file, placed on the template and brought under the cutting edge, rests on the guide rollers. The direction of movement of the file must be parallel to the lateral edges of the template.
When sewing the stopper, the template is applied so that the stopper falls into the cut, next to which is written SOFT (for soft wood) or HARD (for hard wood). As in the case of the first device, the file is seamed with smooth, even movements of the flat file away from you.
Do-it-yourself chainsaw sharpening
The tooth of the chain planes the wood like a plane, and the thickness of the chips is adjusted by the height of the stopper.
Intense sawing will quickly dull the chain. Several sharpenings may be required within one day. The problem is aggravated by the fact that the tooth quickly dulls when it meets the ground. It is enough to hook the soil with the tire once or twice, and the work can be stopped. the shavings become fine and the saw stops going deep into the wood.
The sooner dull teeth are sharpened, the less material needs to be removed during sharpening, as a result. the service life of the saw chain is longer. Determining the moment when sharpening is already required is quite simple. An important feature is the feed force. A properly sharpened chain is pulled into the cut with just a little pressure. If, on the contrary, the chainsaw is forced to cut by increased feed force, then the teeth are dull. A dull chain can also be recognized if, instead of large, thick chips, only small chips fly out of the cut.
In this situation, the chainsaw must be sharpened urgently. Do not cut with a dull or defective saw chain. the consequence is high stress in the body, high cyclic load, poor cutting results. In addition, this means a decrease in productivity, high fuel consumption and increased wear of all parts of the chainsaw.
General rules for sharpening chainsaw chains
Chainsaw chain sharpening machines
Stihl produces two modifications of hand-held machine tools. stationary FG 2 and mobile FG 1, mounted directly on the tire. There are analogues of less well-known companies, comparable in price with the simpler devices described above.
The working part of these devices structurally resembles a bow saw, into which a round long file is inserted instead of a saw blade. FG 1 and FG 2 not only sharpen the chains, but also straighten them, adjusting the length of the top edge of all teeth to the same size. on the smallest tooth, which is taken as the control one. A rather complex configuration mechanism allows you to set all the necessary parameters. Sharpening is carried out in 2-3 movements, after which they proceed to the next tooth, keeping for it all the settings that were made for the control tooth. This ensures the same sharpening parameters for all teeth. When sewing the stopper, the round file changes to a flat file.
An electric chain sharpener for chainsaws is simple and convenient to use. It has an adjustment system that allows you to set the chain at the desired angle and bring the disc exactly to the sharpened edge. There are machines that automatically clamp the vice when lowering the disc onto the chain.
Basic rules and order of sharpening
Sharpening cutting teeth
The question arises: how to sharpen the chain so that all the teeth are evenly even and sharp? The work is facilitated by the use of a metal template, which is applied to the chain. It is installed in a strict position. according to the arrows, the ends of which are directed along the movement of the chain. The main pressure is applied to the leading edge, observing the angle of inclination, which corresponds to the chain pitch.
You need to try to have an equal number of movements for each tooth. The teeth are sharpened in turn: one on the left side, the next on the right, and so on. For the convenience of performing the actions, the tire is clamped in a vice, and then processed through the prong on one side, then the same way on the other.
During sharpening, the fixture must be held at a certain angle
The device and shape of the teeth
First of all, you need to understand the structure of the chain tooth, which must be sharpened. The tooth cuts wood like a plane. It has a complex configuration and an unusual cutting surface. two edges: one of them is lateral, and the second is the upper, slightly beveled. The adjustable tooth stop adjusts the chip thickness. Of course, sharpening such teeth is much more difficult than, for example, a kitchen knife.
Chainsaw teeth have a more complex shape than other sharp objects to be sharpened
In this case, the correct angle of sharpening of the chainsaw chain should be set. It is clear that it is difficult to operate with one file, therefore there are various accessories that help to adhere to the exact parameters of sharpening. These kits are sold complete with chainsaws, as well as separately.
The diagram shows the angles of inclination that must be observed during sharpening
When sharpening, the location of the tool must be chosen correctly The round file was not chosen in vain. due to the rounded shape of the inner contour of the tooth. The edge of the file should be 20% higher than the cutting surface of the file’s diameter, and the choice of diameter is influenced by the length of the chain pitch (usually 4 mm to 5.5 mm). The order of actions should be followed: first, the cutting teeth are processed, then the restraining tooth.
What tools for sharpening are there
To start work, you need to stock up on tools that are divided into two types.
When it’s time to sharpen the saw?
The time between two sharpenings depends on the frequency of use of the tool. Some use it daily, others several times a year.
You can understand that the teeth are dull by some signs that come to light during operation:
- The chain stretches and sags, causing the saw blade to function inaccurately and slow down in the cut. Working with such a chain requires additional effort.
- The sawing process slows down, productivity drops, you have to spend twice as much time on work.
- The type of sawdust changes: they become uneven, sharp, and smaller. Shavings from a sharpened saw looks different: the same pieces of an even rectangular shape.
If the saw loses accuracy and gets stuck in the cut, it’s time to start straightening the chain teeth.
Repair work should not be postponed for a long time. The sooner you sharpen, the less material you have to grind, and accordingly, the longer the service life. And you don’t have to work with a blunt instrument for a long time, increase its wear and tear and waste your own physical strength.
Two samples of shavings: the first is the result of a saw with a sharpened saw, the second is a dull
Manual and electric machines
Stihl manual chain sharpener
Before work, parameters are set, and the processing process is performed much faster than with files: 2-3 movements are enough to sharpen each tooth. Electric machines are also complex to set up, yet work quickly and accurately.
An electric machine can save a lot of time, but not everyone is ready to shell out a large sum for it.
How to sharpen a chainsaw chain: instructions for working with sharpening accessories
A sharpened sharp chain is one of the conditions for the effective operation of a chainsaw. If the chain becomes dull, things in the country will stop: the bathhouse cannot be repaired, the fence cannot be built, and firewood cannot be prepared for the stove. You can turn to paid specialists for help, but remember that this procedure will be repeated at regular intervals, and this is additional financial costs and a waste of personal time. Another way out is to find out how the chainsaw chain is sharpened independently, without the involvement of specialists.
A set of tools required for sharpening saw teeth:
- Flat file, which is taught to use in labor lessons at school. Use it to grind the depth gauge.
- A round file of a certain diameter, required for cutting a cutting tooth. An additional attachment is attached to it. a holder with fishing lines, which suggest how to properly hold the tool in relation to the chain. The holder is placed on the saw tooth, taking into account the guiding lines, the file position is under the cutting surface.
- Template that serves for editing and observing parameters.
- The hook is required to remove sawdust from the chain.
Metal sharpening templates help you calculate the sharpening depth
How to sharpen a chainsaw chain with your own hands: 3 proven methods
The quality of sawing wood with a chainsaw largely depends on the sharpness of the chain. How to sharpen a chainsaw chain with your own hands at home? We will tell you about three good ways.
The speed and quality of sawing wood with a chain saw depends on the sharpness of the chain. It needs to be sharpened from time to time. How can this be done? We will tell you about three reliable ways in which you can sharpen a chain with your own hands. One of them allows you to sharpen the chain right in the field, while the other two require a special tool and electricity.
We install the chainsaw on the table, and clamp the tire with a vice so that it does not move during operation. We set low revolutions on the angle grinder (if there is only smooth adjustment, then slightly press the start button). We direct the disc at an angle of 30 ° relative to the plane of the tooth and tilt it slightly (as shown in the photo). Press on the tooth with light, soft movements.
With this method, the main thing is not to overheat the tooth and not to grind off too much metal. Ditching teeth, sharpening in this way, is much easier than with a hand file, but the sharpening speed increases significantly.
Saw chain sharpening methods
There are three ways to sharpen your saw chain effectively:
- Angle Grinder.
- Sharpening machine.
In this case, it is the angle grinder that needs to be fixed immovably. Can be clamped in a vise or screwed to a workbench with a bracket. Sharpening is done as on a conventional grinding wheel. We hold the chain with our hands and turn it so that the tooth sharpens at an angle of 30 °.
With this method, hands are less tired, since you need to hold the chain, and not the angle grinder. However, the chance of getting injured increases dramatically. We recommend using this method infrequently or not at all, since safety is still more important than speed or quality of sharpening.
Sharpening the chain with a file
This type of sharpening can be used directly in the field. It requires a round file, a holder for it (clamp) and a vise for clamping the tire.
To sharpen with a file, you need to perform the following manipulations:
- Clamp the tire in a vice. If you are in landing and did not take a vise with you, then you can clamp the tire by resting it on the log.
- Place the clip with the file on the chain so that it creates an angle of 30 °.
- With light movements forward (away from yourself), we sharpen the tooth. With a new file, it is enough to make 5. 7 movements. If the file has already been used several times, then more movements will be required.
- After the tooth has been sharpened, remove the file with a clip and scroll the chain to the next tooth. After passing all the right teeth, turn the saw (or change the position of the file) and sharpen the left teeth.
Some file holders have a filed template on which the turning angle is already indicated. So you do not have to “figure out” this angle. But from experience we will say that you need to practice well until it turns out to sharpen the chain perfectly smoothly with a file.
Chain sharpening angle grinder
If you have an angle grinder, you can sharpen your chainsaw chain much faster. It is best to use a small, 125-disc angle grinder. Sharpening is done at low speeds. There are two ways to sharpen an angle grinder.
The saw chain consists of the following elements:
- Left cutting tooth.
- Right cutting tooth.
- Cutting depth stop.
- Leading link.
In order for the chain to saw well, it is necessary to sharpen each tooth on the left and right sides. However, in order not to spoil the sharpening, it is important to know what shape our teeth on the chain are. There are two common forms of saw teeth:
- Chipper. This is the more common tooth shape and is found in almost all chains. Here the profile is somewhat rounded, so it is much easier to sharpen it with a round file. In practice, however, the chipper dulls a little faster than the chisel.
- Chisel. The cutter profile in this case looks like a seven. Such a cutter has a rather small contact area when it comes into contact with wood, so it encounters less resistance. For this reason, in one cut, it makes a greater depth of cut, which means that the speed of cutting a log will be higher (in comparison with a chipper). But sharpening it without damaging the edge is much more difficult.
Electric grinding machines
For straightening a large number of chains, as a rule, in service centers or in manufacturing plants, electric sharpening machines are used. Depending on the manufacturer, the design of the machines may differ, but they have the same principle of operation.
RAZOR SHARP CHAIN! How I use a round file to sharpen a chainsaw to get the saw treeson sharp!
The saw chain is installed in a special guide, which is mounted on the basis of the turntable and has a special retainer to hold the sharpened tooth. The latch is able to move horizontally. An electric emery is installed at an adjustable angle to the sharpened tooth, which is turned on by the operator by pressing the start button. The immersion depth of the emery, as well as the angle at which the sharpening is performed, can be adjusted. The dive itself is performed by the operator. The chain is straightened with a special grinding wheel, which can be changed if necessary.
How to sharpen a chainsaw chain with your own hands
Everyone knows that the saw chain, which is used in chainsaws, needs to be sharpened periodically, but not everyone knows how to do it correctly. Determining that the saw requires sharpening the chain is very simple, for this you need to inspect the sawdust, and if they consist of fine dust, then the tool needs to be sharpened. If sharpening is impossible, it is worth replacing it with a new one.
The use of a chain that is not sharpened can lead to overheating of the engine and the formation of scoring on the cylinder.
We will analyze the main ways with which you can, without problems, sharpen the chain on a chainsaw.
- How to sharpen a chain on a chainsaw with your own hands
- Sharpening with a file
- Description of the sharpening process with files
- Electric grinding machines
- How to sharpen with an angle grinder (angle grinder)
For sharpening and straightening saw chains, two types of files are used. The first is a round file with a diameter corresponding to the diameter of the rounding of the working edge of the saw tooth.
For sharpening saw chains of household tools, round files with a diameter of 4, 4.8 mm are used, due to the fact that they have a small tooth. For professional models, more powerful chains with a larger tooth are used, and accordingly files with a diameter of 5.2, 5.5 mm are needed.
In order to sharpen correctly, it is not enough to sharpen only the cutting edges of the tooth; it is also necessary to adjust the cutting depth limiter. If this is not done, the chain will not cut into the material being cut to the required depth, which will noticeably reduce the speed of work and, just like in a situation with a blunt chain, can lead to overheating of the saw motor due to insufficient load on the motor. This work is done with a flat file.
How to sharpen a chain on a chainsaw with your own hands
A person who has a chainsaw in his household should know how to sharpen a chainsaw chain with his own hands. There are several ways:
- Sharpening with a file (the most common method of sharpening, as it allows you to sharpen the tool directly at the cutting site.)
- Sharpening using a special machine (this method is used in service centers, but can also be used on a personal farm)
- Sharpen using an angle grinder. To sharpen in this way, certain skills are required. Uncommon method, because it is quite difficult to sharpen with an angle grinder correctly.
In this video, you can familiarize yourself with the sharpening process, the most popular methods and tools used for this.
Sharpening with a file
The first thing you need in order to sharpen the chain, or tweak it a little, are special files.
Description of the sharpening process with files
The first thing to start with straightening the saw chain on the saw is placing the tool on a flat surface or table. In forest conditions, a large diameter chock is well suited for this. Next, you need to inspect the saw chain for any defects, it can be cracks, completely broken off teeth. After inspection, you need to set the brake in working condition, thereby blocking its movement on the tire.
The chain must be taut when sharpening with a file.
It is advisable to put a stand under the tire, as it you can use a log, a piece of a branch of a suitable diameter, or the manufacturers of sharpening tools have special clamps to hold the bar in the process of sharpening the chain.
The chain is sharpened by moving the file from the inside of the tooth to the outside. In this case, the file should be located parallel to the special mark on the chain. This mark is applied by the chain manufacturer to indicate the standard sharpening angle.
The sharpened tooth should be located approximately in the middle of the tire, this is necessary for the convenience of work, during the sharpening process, you need to move the chain along the tire, not forgetting to set the brake to the working position each time.
Work on sharpening the chain on a chainsaw must be carried out using gloves made of coarse material, otherwise it is quite easy to injure yourself, because the working surface of the teeth is very sharp.
Ideally, manufacturers advise to make the same number of file movements for each tooth, but in practice this is not always possible. teeth have different degrees of damage to the working edge.
To facilitate sharpening the saw chain with a file, special holders with corner markings can be used. The markings are made not only for the standard cross-cut, but also for the longitudinal.
Tool holders are also handy if you don’t have sufficient sharpening experience. Experienced sharpeners do not use holders for sharpening, but can only use special devices that support the file.
Another device designed for sharpening is a manual saw chain straightener. It uses a regular file as a sharpening tool, which can be replaced independently. The machine is mounted directly on the tire, it also has the ability to adjust the angle of sharpening of the tooth and a special stop that holds the sharpened tooth.
Manual sharpening machine, perfect for beginners. Along with electric models of sharpening machines, manual has its undeniable plus in the form of a low price. Depending on the manufacturer of the hand-held machine, their appearance may differ, but the principle of operation is the same for all.
The depth of cut is adjusted with a flat file, so that there is a difference between the upper cutting edge of the tooth and the height stop.
As you can see from the figure, the depth gauge is grinded in such a way as to bring the gap indicator to the factory value. Below is a table showing the main values of the angles, as well as the clearances for the most common types of chains.
As a rule, the size of the gap is adjusted using a special die. It is installed on the chain during sharpening, after which the depth gauge is grinded.
How to sharpen with an angle grinder (angle grinder)
The method of sharpening the saw chain using an angle grinder, the least common due to its insecurity. In order to straighten the chain teeth using an angle grinder as a sharpening tool, it is necessary to install it in a vice and clamp it securely. Then the tool is switched on and the sharpened edge of the tooth is placed on the rotating surface of the disc. A tooth sharpened in this way can differ significantly from that sharpened with a file, because in the process of dressing using an angle grinder, it is rather difficult to control the sharpening angle.
A big disadvantage can be considered the possibility of a notch with an angle grinder with an angle grinder of the eyelet for attaching the connecting link of the chain, which in the future will lead to a rupture during work. If, in the process of carrying out work using a chainsaw, the need arose for sharpening, it is better to use a special tool than to come up with various tricks that can result not only in financial losses, but cause serious injuries during their implementation.
Sharpening the chain is not as difficult as it seems at first glance. Any person, after studying the process of straightening chains, is able to sharpen the cutting set of his tool on his own. Even if the first time you manage to do it not very well, you should not despair, because with every next try, the result will be better and better.
You can determine the sharpening angle by measuring the distance from the top cutting edge to the guide bar. The performance of the chainsaw when cutting soft wood depends on its value. Otherwise, the unit runs smoothly.
The thickness of the chips depends on the distance of the depth gauge. The value of the last indicator should be in the range of 0.5-0.8 mm. Otherwise, when working with a chainsaw, there will be increased kickback and vibration. If this indicator is below the specified value, then the performance of the unit in question will drop.
Chainsaw chain sharpening scheme with a file.
Before sharpening the chainsaw chain, you will need to familiarize yourself with the basic rules. The round file must be positioned so that its upper edge protrudes beyond the upper edge of the tooth by 1/5 of the diameter of the tool being used. The choice of file depends on the chain pitch. It must be positioned at an angle of 90 ° in the vertical plane and 30 (10) ° in the horizontal plane. Since it is difficult to fulfill these conditions, experts recommend sharpening the chainsaw with the help of special tools included in the main unit.
If you sharpen the chainsaw in a timely manner and correctly. then its service life will increase. Experts identify several signs when the chain is sharpened. The main reason is the feed force. It will be necessary to sharpen the chain when small sawdust flies out of the cut.
The time between 2 sharpenings depends on the frequency of use of the unit. Before you sharpen your chainsaw chain. you will need to stock up on the following tools:
Chainsaw tooth device diagram.
A round file is required to cut a cutting tooth. A holder with fishing lines is attached to it, which indicate how to sharpen the chain correctly. The hook is used to remove sawdust from the device. To sharpen the chainsaw chain, you will need special hand-held or mechanical machines. On 1 units, parameters are preset. Sharpening of the 1st tooth is carried out using 2-3 movements.
Before deciding how to sharpen the chain, it is recommended that you understand the structure of the tooth. It consists of a top and side edge. The height of the tooth guard is easily changed. Sharpening angle the main indicator that must be observed to achieve the required cutting properties. The rear corner of the upper blade allows the saw to cut into the wood. With its help, lateral cutting of chips is performed. The front angle parameter is in the range of 60-85 °, and the back angle is within 50-60 °.
How to sharpen a chainsaw video
The network contains a fairly large number of photos and videos of sharpening a chainsaw chain using a file. For example, this story shows the entire sharpening process in sequence:
Let’s see what nuances experienced owners pay their attention to when sharpening an electric or chainsaw:
- The file must be exactly the right size. For example, for a 1.6 mm chain, a file with a diameter of 5.2 mm is suitable, and for a 1.3 chain, the tool diameter should be 4 mm.
- The tire with the chain on it must be held in a vice or clamp in such a way that light falls on it well. Otherwise, you may not see the file lane. This is fraught with overstepping and damage to the tooth.
- When working, it is necessary to firmly hold the tire with your free hand so that it does not “walk” from side to side.
- Work with a file should be performed strictly at an angle of 30 degrees in a horizontal plane relative to the chainsaw chain strictly along the strip located next to each tooth. Movements should be smooth and not go beyond one plane.
- In case the teeth are very blunt, careful boring of each tooth is necessary.
- In the presence of chips (the chain hit a nail or a self-tapping screw, into the ground, on concrete, etc.), the chips must be completely grinded, and the teeth themselves must be carefully sharpened with a file, going through each at least 10 times.
- If the chain is not very blunt, it is enough to walk the file over each tooth 2-3 times.
- In order not to get confused, the masters recommend marking the first sharpened tooth with a thread or marker.
The tire is pre-fixed. Turning movements are self-directed and should be smooth. When sharpening the chain, it is recommended to constantly rotate the file (to prevent one-sided wear). All saw teeth are sharpened in the same way. Pre-sharpen the teeth in the same direction.
To sharpen the chain of a chainsaw, it is necessary to make the same number of movements with a file at constant pressure.
Compliance with these conditions will allow you to get teeth of equal length. Otherwise, the chain will move unevenly.
To grind off the depth gauge, use a template. It is applied so that the stop is located in the slot. The tip that protrudes beyond the slots is grinded with a flat file. If the cutting edge has no shape or the chain has touched the soil, then a special manual or electric machine will be required for sharpening.
Company Stihl manufactures 2 modifications of manual units:
- FG2 stationary device;
- FG1 mobile device.
These nodes are installed on the bus. Their working part is presented in the form of a bow saw with a round long file. FG1 and FG2 adjust the length of the upper edge of the teeth to the size of the smaller control tooth.
After sharpening the 1st tooth, the same steps are carried out in relation to the other tooth, while the settings made for the control element are saved.
Using an electric machine with a built-in adjustment system, the chain is set at a slope (the sharpening angle is observed). This work is performed by an angle grinder or a machine with a vice. First, you need to find out the principle of the device of machines and chainsaws. In the absence of proper skills in working with a chainsaw and electric machines, it is not recommended to sharpen the saw yourself. In this case, you will need the help of professionals.
How to sharpen a chainsaw chain with your own hands: useful tips
The chainsaw is a universal tool. It is difficult to imagine a household without even the old Soviet “Friendship”.
However, this tool, despite its ubiquity, is quite difficult to maintain and you cannot do without knowing some of the nuances.
Those who have just purchased such a saw very often have questions about caring for it and, in particular, about sharpening the chainsaw chain with their own hands.
In this article we will try to answer this question in as much detail as possible. However, before we get to the direct advice of experienced owners of this tool, it is necessary to find out when and how often it is necessary to sharpen it.
Every owner should remember that the performance of any saw directly depends on how often and how correctly it is sharpened. What are the signs that indicate it’s time to sharpen your saw??
- decrease in tool speed during operation;
- the saw when working “walks” in different directions;
- in the process of cutting the chainsaw “gives out” finer shavings, “dusts”.
Sharpening can be done in three different ways: with a file, a special machine or an angle grinder. In this article, we will look at the most common and safest way to sharpen a chainsaw at home. with a file.
This honing method includes three stages:
The first stage is preparatory. At this stage, you must prepare for the sharpening process yourself and prepare the tool. It is very important to take the necessary safety measures and have all the necessary equipment available.
The second stage is the direct sharpening of the chainsaw chain.
And finally, the third stage is the final one. It is necessary to check the quality of sharpening and, if everything suits, correctly complete the process. Let’s take a look at what advice experienced tool users give in each of the three steps.
Preparing for sharpening:
- First, remove the bar from the saw and secure it securely with a vise or clamp.
- The sharpening process is unsafe. Therefore, be sure to wear glasses and heavy leather gloves. Do not remove them during operation until the process is complete.
- Put the chain on the tire and carefully brush away debris (sawdust stuck in the teeth, earth, pebbles, dust, etc.).
At this stage, the preparatory stage can be considered complete, and we move on to the direct sharpening of the instrument.
Correct sharpening of the chainsaw chain with your own hands
Chainsaw a tool equipped with a two-stroke internal combustion engine. Do-it-yourself chainsaw sharpening is carried out using special tools. Experts recommend sharpening the chain several times with intensive device operation.
The main parameters of the chainsaw chain.
Chainsaw chain sharpening
Chainsaw. a faithful assistant to every owner of his own home, irreplaceable during construction, clearing the site from weeds and branches. However, any instrument must be kept in good condition.
Chainsaw. a faithful assistant to every owner of his own home, irreplaceable during construction, clearing the site from weeds and branches. However, any instrument must be kept in good condition.
How to know to sharpen your chainsaw chain?
The time between sharpening is determined by the frequency of use of the chainsaw. We have already written about how to choose the right chainsaw for a summer residence. Someone uses it every day, someone a couple of times a year.
There are several signs by which you can determine that the chain is dull:
- The speed of the tool has decreased.
- The sawdust has become uneven, sharp.
- The chain stretches, sags, requires some effort when working.
You can sharpen the chainsaw chain with your own hands in various ways: with a file, an angle grinder, a machine.
Sharpening the chain with a file
The cheapest and most affordable way to sharpen. use a file. To properly sharpen the chainsaw chain with a file, you should decide on its size:
For processing 1.3mm chains. you can use a round 4mm file.
With a chain size of 1.6mm. a file with a diameter of 5.2 mm is required.
You will need a flat file to remove the stops.
For information on how to properly sharpen a chainsaw or saw chain, look at
When sharpening yourself, you need to monitor the sharpening angle. The maximum angle is factory-specified and marked on each prong. This mark will serve as a guide.
Sharpening is as follows:
The tire is mounted on a clamp.
The tool is set according to the template.
The teeth are sharpened in one direction. In this case, the file moves only in one direction, away from itself. with a certain pressure. If you remove the limiter. the file can be moved in any direction. With different lengths of the teeth, the guide will be the shortest, the rest are grinded down to its level. The file must be constantly rotated so that it does not grind off.
The position of the tire changes and the teeth are sharpened in the opposite direction.
To facilitate the sharpening process and minimize errors, you can use a template. It is fixed on the saw bar of the tool. Next, you need to choose the optimal sharpening angle and fix it with a piece. After that, it remains to move the file in the groove of the pattern.
Sharpening with a machine
File sharpening is not always possible. For example, if the cutting edge is damaged, the best option is to use a sharpening machine. Before sharpening on a manual machine, loosen the adjusting screw of the chain clamp, set it so that the links are directed towards the sharpening stone, select the required sharpening angle.
The chain is attached to the support in a special vice, the angle is set. The sharpening disc is guided to each tooth from top to bottom.
There are two ways to sharpen the chainsaw chain on the machine:
Sequentially, one by one, with polarity reversal.
Through the prong, no polarity reversal. First, those going in one direction are sharpened, then. in another.
At the end of sharpening, the chain is blown with compressed air, after which it is placed in clean oil for several hours. This sharpening method is the most accurate, but it requires a certain amount of time.
Below we propose to see how the sharpening of a chainsaw is performed using a machine on
Sharpening with an angle grinder
This way. one of the cheapest and most popular. The process takes only a few minutes, but requires certain skills in handling an angle grinder.
The main feature of this method is that you do not need to remove the chain and install it in a clamp. It remains on the body, sharpening takes place there. Before you sharpen the chainsaw chain of an angle grinder, you need to get a used disc for metal, 2.5mm thick.
Sharpening takes place at minimum speed of the angle grinder, the teeth are processed one by one. When working, you need to observe safety precautions and use glasses and gloves.
For how to sharpen a chainsaw chain an angle grinder, look at
You can also sharpen the chain on the saw using other tools. The hand engraver is very popular. lightweight and compact. The chain is removed from the saw, after which each tooth is processed by an engraver. Additional devices are not required in this case.
When sharpening by any method, all teeth must be brought to the same length. Otherwise, the chain will go astray and cracks will form in it.
First about the horror stories
If you cut with a blunt chainsaw, you will get three negative factors:
- Reduce the efficiency of your process. For example, instead of two cubes, file one (in the same time);
- Expose the mechanism to intense wear, with the risk of destroying the drive sprocket and tire;
- Get increased fuel consumption;
There is also a fourth, perhaps not so significant factor. “torn” cut of the saw cut.
And of course, you will get tired more, you will (perhaps) be angry with yourself, like “why should I be a fool, do not sharpen in advance, now suffer.”
Here is a test question for you (photo on the right). Guess what kind of shavings “came out” from under the sharp and dull chain? (the answer will be below).
Chainsaw teeth have a specific geometry. You need to understand and know what part of them should be sharpened. In general, the “logic” of cutting wood resembles a plane.
The cutting surface has two edges. One is lateral, the other is slightly beveled. The cutting depth limiter adjusts the thickness of the chips. Let’s take a closer look. The elements of the cutting-working link are arranged as follows:
- Base with axle holes;
- Tooth scapula;
- Cutting depth limiter;
- End face of the blade (placement. vertical);
- Upper edge of the blade (placement. horizontal);
Sharpened edge Dull After touching the ground
After sharpening, the height of the stop and the angle of the sharpened working edges should not differ greatly from the parameters specified by the manufacturer. This is an important condition and it needs an “eye and eye” behind it. Otherwise, the saw will not work as expected.
Do not over-grind or change the location of the links. The normal operation of the instrument depends on the identity of their location. Otherwise, increased stress on the chassis, tire and engine is likely. The cut can be crooked. There is also a small chance of breaking the circuit.
Electric sharpening machines
They are equipped with special adjustment functions to help you position the chain at a certain angle. At the same time, it is possible to accurately and accurately bring the disc to the chain teeth. There are machines equipped with automatic vices. They are switched on when the disc approaches the edge to be sharpened. Convenience and functionality are of course high. You can find models at “lifting” prices.
The design of such a machine is similar to a bow saw. Only where the saw blade is located is the round file. With such a machine, you can sharpen and straighten the teeth, adjusting the proportionality of the upper edges to the smallest (control) size. The mechanism allows you to accurately set the parameters. After adjusting the “control” tooth, sharpening is carried out in two or three movements. And then the transition. to the next tooth.
When it is necessary to grind off the stopper, we change the round file to a flat file.
Advantages of the method: Allows you to sharpen teeth, including those that have lost their original shape, in a high-quality, convenient and without large physical costs.
Disadvantages: The price of the tool and the distance from the possible site of the saw operation.
“After finishing the“ sharpening procedures ”, blow out the chain with compressed air (from a compressor or pump) and put it briefly in clean engine oil. Of course, almost no one does such events, but for the chain, they will only benefit. “
What to choose for sharpening is up to you. This is due to how often you use your chainsaw. From the accuracy of handling it. From the quality of the purchased chain. And, of course, from the opportunity to spend a certain amount. It is impossible to compare methods, because as the German proverb says. “apples should be compared with apples”.
Sharpening angle grinder
Professionals consider this work to be primitive. There is a risk of tire damage, and not only.
Process (seemingly easy, but really difficult)
- The chain also stays on the bus;
- We attach a metal cutting disc with a thickness of 1.5-2 mm to an angle grinder. It is advisable to take not a new one, that is, with a worn edge;
- We put an obstacle in front of the chain and the tire (the chip will come off);
- We carry out sharpening at the desired angle;
- Upon completion of work, the chain must be properly tightened.
With a professional approach and a “full hand”, the number of sharpenings in this case can be more than 7.
“For a beginner, it is better not to“ experiment ”with a saw, a chain, etc. with your body parts! “
Advantages of the method: Fast, cheap and does not take up energy;
Disadvantages: Requires special skills, a steady hand and the ability to comply with safety techniques.
We work with a file
The best solution is simple gadgets for sharpening work. This set includes a round and flat file, special holders, a gauge template, a hook for removing chips, etc. Structurally, “adaptations” may differ, but the functionality has a common logic.
The diameter of the round file is directly related to the chain size:
- – Chains with ø 1.3. require a file of ø 4 mm (used much more often);
- – Chains with ø 1.6. require a file ø 5.2 mm;
- – For sharpening the depth gauge, use a flat file.
- Having previously “turned on” the chain brake, firmly grip the tire of the chainsaw in a vice (a firmly clamped saw is the key to successful sharpening)
- Set the template so that the arrow points towards the nose of the tire. Be sure to mark (with chalk) the tooth from which you started sharpening, otherwise you can go along the second circle;
- Sharpen in the direction of the arrows. Remember, there is a special factory cut on each tooth in the chain. It indicates the maximum sharpening angle.
- In addition to the cutting tooth, there are stops on each link. Their sharpening is carried out as needed. This is necessary when, as a result of sharpening, the height of the tooth decreases, and problems arise in the operation of the chainsaw. As a rule, the limiter is sharpened after 2-3 sharpening of the teeth;
“If you don’t have the skills to sharpen, it’s better to start with inexpensive chains.”.
- The file should not go beyond the upper part of the cutting edge by more than 1/5 of the working part of the file. The pressure is carried out with the same effort;
- The movement of the grinding tool is performed in one direction “away from you”, and the number of movements for each tooth must be equal;
- To sharpen a vertical plane, the position of the file must be at right angles;
- For sharpening the horizontal plane, file position, at an angle of 20-30 °
- If there are teeth of different heights, the reference is the smallest.
Advantages: Ability to “charge the saw” in the field. At the same time it’s cheap.
Possible ways and methods of sharpening the chain