Chainsaws and electric saws from grinders. Nozzles, homemade products, alterations. Tips and instructions. Circular saw from an ordinary grinder How to make a saw from a grinder with your hands

25.04.2020

The circular saw is one of the versatile locksmith tools that finds wide application in various areas of the economy, in metal and woodworking, furniture production and other tasks. The main advantages of disk machines include ease of operation, high speed and cutting accuracy, as well as good maintainability and the ability to quick change cutting disc. If you don’t have a professional or household disc machine at hand, you can make it yourself on the basis of a conventional angle grinder (angle grinder) or grinder.

How to make sawing machines from a grinder at home?

Self-manufacturing a cutting machine based on a grinder justifies itself from an economic point of view: for performing one-time household chores (cutting logs, metal and wooden profiles, timber and corners, as well as ceramic tiles and other materials) it is unprofitable to buy expensive machine tools. With basic skills in working with welding machines and other tools from the locksmith's arsenal, you can easily make a circular, pendulum or chain saw with your own hands.

We invite you to familiarize yourself with detailed instructions, drawings and tips for making a grinder saw with your own hands on the video, where you will find many useful practical recommendations and get important theoretical information for converting tools (photo instructions also complement the video for your convenience).

Do-it-yourself circular saw from a grinder

Circular saw designed for simple, but voluminous woodworking work - cutting timber, boards, lining, etc. - can be made quite simply on the basis of an ordinary grinder. It is recommended to take an angle grinder with a disk diameter of at least 125 mm to make the tool universal in use. You can make a circular machine based on an angle grinder according to the drawings and without based on the old kitchen table, as well as a homemade frame structure made of metal or durable wood.

The main requirement for the base is the stability of the structure (it should not loosen) and a flat bed on which the grinder will be fixed. It is necessary to make a slot for the saw blade in it. The bed can be made of wood, chipboard, plywood, metal sheet, plexiglass and other hard materials with a thickness corresponding to the loads that will be placed on the structure during operation.

Since the drive of the circular saw from the grinder will be mounted from the bottom of the table cover, it is better to make the cover hinged with strong hinges. Do not forget also about the guide bar - it can be made from an ordinary metal corner. In this case, the bar can be fixed and sliding. The most important part of making a circular saw is securing it securely to the bed. To do this, you can use strong self-tapping screws, as well as make your own special brackets for fixing the angle grinder on the table top.

Do-it-yourself pendulum saw from a grinder

On the basis of an angle grinder, you can also make a pendulum and assembly cut-off saw for use at home. With its help, you can easily cut the same parts and blanks from wood and metal. The design of such homemade machine more secure, because the cutting disc, together with the grinder, is mounted above the countertop. Such a saw from a grinder is made by hand according to the drawings, and also with the experience and skills of a locksmith, it is performed by eye due to the simplicity of its design.

It is quite simple to make a pendulum or mounting saw from a grinder: the design will consist of a frame, a pendulum and a mount for the grinder. The frame can be made from profile pipes, welding a frame from them and installing a platform on it from sheet metal thickness from 3 mm. A metal bracket is attached to the platform for attaching a pendulum saw and an emphasis for fixing the workpiece during cutting. The emphasis is best done in the form of a rotating protractor, which will allow you to conveniently set the angle between the part and the saw blade.

It is also necessary to make a hole (cut) in the table top of the machine at the point where the saw blade touches. The pendulum in this design is also made of metal profiles by welding (you can see the drawings below on the page). It must be fixed on one side to the bracket, and on the other side, fix the mount for the angle grinder on it. This T-shaped pendulum must have a movable joint that allows movement cutting disc during work. The connection can be made from a rolling bearing and bushing, as well as a rubber band or spring (to return the mechanism to its original position).

The fastening of the grinder to the pendulum is made in the form of a metal console with one or two brackets. To one of them, the angle grinder is attached with bolts, and with the help of the second bracket in the form of a clamp, the grinder is held by the body. A miter saw is made according to a similar principle, a video on the equipment of which you can see here.

Do-it-yourself chain saw from a grinder

The two previous types of home-made machines are good because, if necessary, the grinder can be dismantled and used in the usual way. Unlike them, for the manufacture of a chain saw from a grinder, it will have to be modified forever. You can also make a chain saw from a grinder with your own hands, but compared to the previous two types of machines hand made it is a less practical and less safe device. If you have an old grinder that you do not mind modifying for various cutting jobs, then you can make a chain saw out of it.

Such a saw may be needed on the farm for cutting branches and other wood structures where it is difficult to get with a conventional saw. To make a chain saw, you will need a bar mounting bracket, which can be made from a metal profile. The saw chain is pulled on it and the drive sprocket is wound on. It is advisable for such a design to choose a grinder with an adjustable speed of disk rotation. Now you know how to make a pendulum, circular and chain type cutting machine from an angle grinder.

metall.trubygid.ru

How to make a circular, trimming, manual electric saw from a grinder with your own hands

It is too expensive to have the entire range of electrical tools at home. For example, a circular at home is rarely required. Sawing boards can be done with a modernized grinder.

Hand saw

A manual circular electric saw from a grinder is obtained by replacing a standard cutting disc with a wood disc.

True, this option is suitable for short cuts of sheet materials or a cut of thin rails. With a long cut length or on thick bars, there is a danger of the disc warping, jamming it. It will be much easier to hold the saw if the handle is not positioned perpendicular to the axis of the tool, but made a continuation of the body.

Craftsmen also make a manual chain saw from a grinder. True, such a tool is dangerous for the user: the absence of a chain stopper can lead to unpredictable consequences. In addition, the chain is not lubricated, which leads to its rapid wear.

Miter saw

Trimming, that is, a cross-cut of boards or bars at a right angle, is better if you use a special device.

You can also make such a machine from a grinder with your own hands.

To do this, a grinder with a disk on a tree is fixed on a rotary bar perpendicular to the direction of the length of the board so that the plane of the disk is directed strictly vertically. One attachment point should be located in the area of \u200b\u200bthe gearbox, and the second - at the opposite end of the machine.
There are threaded holes in the gearbox housing for attaching standard handles. With the help of corners and these holes, the grinder must be attached to the moving part of the machine.
The back of the case is attached to the board with a clamp. The protective cover on the disc can be used from any power tool right size.
Closer to the vertical support, you need to fix the thrust corner. It should be located strictly perpendicular to the plane of the disk, both in vertical and horizontal directions.

The spring at the rear end of the bar is used to return the miter saw to its original position after the end of the cut. The horizontal table must have a transverse groove into which the disk enters when cutting the board. The diameter of the disk is chosen, focusing on the width of the boards. So trimming can be done in one go. Most importantly, the inner hole of the disc must match the mount on the axle of the gearbox.

When working on such a machine, it should be borne in mind that the drive power is not intended for a large load. Therefore, the rotating disc should be brought to the surface of the sawn part smoothly, the cut should be made without strong pressure.

Table Circular Saw

Sometimes there is a need to change the width of the board or the thickness of the bar. The best option for such work - a circular saw, especially if there are a lot of boards. For cutting boards of small length (1-2 m) it is very useful desktop version circulars. It is not necessary to buy such a machine, you can make it yourself from the same grinder.

The design of a circular saw is much more complicated than a miter saw. The contact time of the saw blade with wood is quite long, therefore, the reliability of attaching the grinder body to the frame should be higher.

This is what one of the options for a desktop circular might look like.

The photo shows that the desktop consists of two planes:

the upper table is designed to advance the workpiece;
the bottom serves as an emphasis for the grinder.

The disk passes through a groove in the top surface. If the contact angle of the two planes is provided with rotary hinges, then it will be possible to adjust the working height of the saw blade to reduce the area of rubbing surfaces.

On the upper surface of the table, the head of the bolt is clearly visible, with which the grinder is fixed. The protruding bolt limits the width of the processed board. You can deal with this problem by laying another layer of plywood.

Turning the grinder on and off with a key on the case is quite inconvenient. If the key can be fixed in the working position, then it is worth installing a socket with a switch on the outside of the machine.

The stop angle should be as long as possible to prevent the board from deviating from the cutting direction. It is better to fix the corner so that you can change the working distance between it and the disk: then the width of the part to be cut will also change.

Stationary circular

You can use the grinder as a working mechanism in stationary conditions. The bed in this case will have a slightly different design. The stationary option implies the presence of free space and a large amount of work. Therefore, the entire structure can be made more solid, more massive, and, therefore, more reliable.

The frame of the bed can be made from a corner by a welded joint. Bolted and other types of detachable fasteners lose grip from constant vibration, the structure begins to stagger.

A desktop made of a wide board or thick plywood is attached to the top of the metal frame. The workpiece will move along it. The stop angle is equipped with a movable mount for adjusting the cutting width.

It would be nice to provide for adjusting the height of the table or removing the disc above its surface - then it will be possible to cut longitudinal grooves in the board.

On the side of the machine are the controls: socket and on-off buttons. In the stationary version, it makes sense to exclude the key on the body of the grinder from the circuit. If there is enough space, a high-power grinder can be used as a drive.

How to make a sawmill from a grinder is shown in this video:

The nuances of using a homemade circular

It should not be overlooked that the grinder in its main purpose is an angle grinder. Therefore, using it as a homemade circular saw, you need to pay attention to the nuances.

The duration of continuous cutting should not exceed 15-20 minutes to avoid overheating of the motor.
The standard protection on the disc is in no way suitable for a circular saw. The protective cover can be used from a real circular or made independently.

It should be remembered that the speed of rotation of the grinder can be more than 10,000 rpm - this is several times higher than the speed of woodworking machines. At this speed, the wood begins to smoke. Except bad smell, fire is possible.

technika.expert

How to make a circular grinder? Step-by-step instruction

Many different tasks can be solved with the help of a homemade circular grinder. Such a machine will become an indispensable assistant in the repair of an apartment, in the manufacture of furniture and for many other men's affairs. You can buy a ready-made circular machine, or you can make it yourself.

You don't need to have any special skills to do this. Enough to know how to use hand tool and have the necessary minimum of materials. Before we talk about how to make a circular grinder, consider general design machine.

Do-it-yourself circular grinder: design

With all the variety of designs, any grinder from a grinder, made by hand or bought in a store, consists of the main parts:

engine;
Desktop;
bed;
disk;
reducer.

As an engine for a homemade machine, you can use several available options. Usually in such recommendations it is proposed to use asynchronous motors, bought specifically for the machine, the engine from the washing machine, a drill or a grinder. Each of the options has its own advantages and disadvantages.

If you buy an engine specifically, then there is the possibility of choosing its parameters for your machine. This is where the advantages of this choice end and the disadvantages begin. The main disadvantage is the high cost of such a solution. Indeed, the engine is more expensive than a hand-held power tool. The cost of such a purchase is close to the cost of the finished machine.

The second option is the engine from the washing machine. This is done by those who have unnecessary equipment with a serviceable engine. Not every washing machine is suitable for a homemade machine. Many modern automatic machines have an engine that requires a special controller to control it.

Of course, you can build your own controller, but this will greatly complicate the work. Engines from old washing machines they are connected simply, moreover, often a pulley is already installed on their shaft. This greatly simplifies the work of creating a machine. The disadvantage of such engines is low power. The machine that can be made will turn out to be a model of the machine rather than a real working tool. However, for some tasks such a solution is also suitable.

Using a drill, you can make a mini-circular

As a rule, drills have low speed and high power. The saw blade can be driven directly by clamping its axis into the drill chuck. The disadvantage of such a scheme will be the need to take breaks in work. As a rule, drills are not designed for continuous operation and require a stop for 15 minutes every 5 to 10 minutes of operation. This problem can be partially solved by installing additional engine ventilation, but this will make the design of the machine much more complicated.

The use of an angle grinder, or in other words a grinder, is free from many well-known shortcomings. First of all, the grinder's engine has a high power. Many people have this tool, and if not, then buying it will be useful. The use of an angle grinder as a machine engine does not make it impossible to sometimes use it for its intended purpose. The integration of the grinder into the machine is simple.

Often there are special clamps included with the angle grinder, with which you can quickly fix it on the frame. A pulley is easily installed on the tool shaft, which drives the machine disk. Due to the high engine speed, it is well ventilated by the built-in cooling system and is able to work for a long time without interruption.

Making a circular saw from a grinder is not difficult. This does not require special knowledge and special skills. All you need to do is show a little creativity and do all the work carefully. Before you start making a machine, you need to weigh all the arguments and decide why exactly it is needed. It should be understood that despite the possibility of long-term continuous operation, due to the sometimes high loads that occur, the angle grinder can fail.

If you plan to open your own furniture production or manufacture wooden products in industrial volumes - the best solution would be to buy a finished machine. Homemade machine is suitable only for home use, as a tool for solving small everyday tasks at home, in the country or in the garage.

What will be needed?

The simplest do-it-yourself circular saw from a grinder is a metal table with a wooden surface and guides, on which the engine, disk and disk drive system are fixed. The bed or frame of this table must be made of a metal corner.

It must be strong enough. It doesn't have to be heavy. Stability during operation can be ensured using special fixing elements that secure the machine to the floor or other stable surface. The unit can be made without preliminary drawings. The main thing is to adhere to the recommendations written below and have a minimum builder skill.

The working surface of the machine is made of MDF or plywood. Plywood with a thickness of 9 or 12 mm is best suited. There are two options for a disk drive device.

The first and easiest is to put the disk in the grinder's regular place. That is, just choose a disc that is suitable for use at high speeds. It should not be forgotten that conventional wood discs are designed for a lower speed. In addition, the diameter of the disc matters.

When sawing wood, higher loads occur than when working with an abrasive disc.

In order not to overload the engine, you should choose a disc of a smaller diameter than the one that is usually installed on the grinder.

The second option is a little more complicated. If you use a belt drive, you can reduce the speed of rotation of the disk and increase the torque. In this case, it becomes possible to create a full-fledged machine. If you use several pulleys, you get a machine with a variable gear ratio. Such a machine can work with different disks and can easily cope with any materials from wood to sheet metal.

In a homemade machine, the grinder is attached not to the work surface, but to the frame. It is necessary to fix the power tool firmly enough. Do not do this with plastic ties or clamps and self-tapping screws. However, in the very simple version You can use anything, even simple tape. The main thing is to never turn on such a machine, because the resulting vibrations will quickly destroy the mount, and high rotation speed combined with high power can cause serious harm to health.

For reliable fastening, it is necessary to use the clamps that come with some angle grinders or to attract the grinder to the frame with homemade clamps using screws and nuts. All threaded connections must be fastened with a retainer.

You can purchase a threadlocker at any auto parts store. To fasten the grinder, you must use a temporary latch, and to fasten other parts of the machine - a permanent latch.

An important detail of the working surface of the table is the thrust bar. It is installed parallel to the plane of the disk.

The easiest way is to make a thrust bar from an iron or aluminum corner. The thrust bar must be movable. For this purpose, the corner is attached not to the work surface, but to another plywood plate. In turn, the plate is located on the desktop. To fix it, you can use clamps purchased at a tool store and building materials. The design of the bed is easy to come up with on your own.

The main requirement for it is the simplicity of the arrangement of all elements of the machine in it. After the work surface is attached to the frame and the grinder is fixed, you need to mark the slot for the disk. This can be done from the inside of the machine. After the marks are made, the surface is removed and the slot is marked using a ruler and corner. You can cut the surface along the marked lines using the same grinder.

Important! you can not put a disc on the grinder for sawing wood. The fact is that he will almost certainly snatch the power tool out of his hands. It is almost impossible to keep an angle grinder with such a disk in your hands.

You can also cut plywood with a conventional abrasive disc. If you do not make an effort, then for the grinder it will be completely harmless. The only downside is a lot of smoke. Do not make these cuts while at home.

Plastic ties are useful for attaching the wire from the grinder to the frame. As a switch, you can use an extension cord with a power button built into it. The extension is also attached to the frame so that the button is in an accessible and convenient place.

You should not neglect your safety. There is one detail of the machine, the presence of which is simply necessary, but almost everyone does without it. This is a protective visor over the disk. You can make it out of plywood, in the form of a narrow box and fix it with furniture hinges so that it leans back. If you don't do this simple protection, the risk of parting with several fingers increases significantly.

Additional Security Measures

The presence of a powerful motor and working parts moving at high speed poses a serious danger to both the one who works on the machine and those who are nearby. The point is not only that it is easy to cut yourself on the sharp teeth of the disc. With careless work, the workpiece can break out of your hands and turn into a flying projectile. The saw blade itself can also be destroyed. Fragments of the disk scatter at high speed and pose a mortal danger. In order to minimize risks, when creating a machine, you must follow a few mandatory rules:

Do not place the switch on the working surface of the table. It must be placed on the side surface.
Be sure to make a protective cover.
Do not turn on the machine without attaching it securely to the floor.

Reducer or disc drive system

As already noted, the speed of the grinder significantly exceeds the permissible speed of the circular saw blade.

If you connect the disk directly to the grinder shaft, then of course it will not crumble from centrifugal loads, but it will become blunt much faster and work out of order.

All this together will lead to a quick failure of the drive and the grinder engine. For reliable operation, a system of pulleys and a belt is needed. One pulley is mounted on the shaft of the grinder, the other shaft of the saw blade. Bulgarian produces 9-11 thousand revolutions per minute. The disk should rotate at a speed of 6500 -7200 rpm.

For efficient and safe work on the circular, you should carefully select the discs. They must comply with certain standards.

The ratio of the disk diameters should be equal to the ratio of these speeds. Dividing one by the other, we get a coefficient of 0.7. Therefore, two disks are needed, the diameter of one should be 0.7 of the diameter of the other. The smaller of these disks must be placed on the grinder shaft, and the larger one on the disk shaft. Rims and belt can be selected at an auto parts store. When using a belt drive, you need to make a tension system. The easiest way to do this is to fix the grinder rigidly to the frame, and fasten the work surface together with the disk shaft after installing the belt, pulling it in place.

The overall layout of the machine must meet the following requirements:

The workpieces are fed from right to left, and vice versa for left-handers;
The power button is located on the front side of the machine;
It is necessary to work on the machine and position it so that no one is in the plane of the rotating disk.

Useful video

In addition to a full-fledged circular machine, a mini-device can be made from a grinder. More in the video

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Do-it-yourself power saw from a grinder - manufacturing options

Circular electric saws - extremely necessary tools for household. Due to their technical and functional properties, today no furniture production or carpentry shop can do without them. Yes, and in private households there are many tasks that would be more appropriate to solve with their participation. The only thing that limits their operation today is the cost, which grows every year, as does the need for them. One of the ways to overcome this barrier and acquire such versatile helpers is to assemble a homemade circular saw,

Considering the load and duration of the working cycle of electric saws, for their home production you will need an equally reliable basic electrical appliance. Craftsmen advise using a grinder or an angle grinder as it, which almost everyone has. Its traction potential will be enough for sawing wood, spreading bars into slats and other tasks that most users set for it. Consider several ways to make a power saw out of a grinder at home.

Do-it-yourself circular saw: the easiest way to make

In order to start assembling a homemade product, you will need:

metal clamps;
electric drill;
toothed disc;
several pieces of metal corner;
bolt ties of modifications M3 or M5;
correct gearbox;
high-strength steel bars;
wrench.

An engine from a household grinder will act as the power base of the future construct.

Work progress step by step

from the grinder, the disk installed before is preliminarily dismantled;
a disk with teeth for woodworking is taken, which is pulled together by corners. A gap of several millimeters is left, which are regulated by a coupler of bolts;
the body of the grinder - the future electric saw is covered with clamps. At the bottom of the tool, a double metal tape with a thickness of at least 1.5 mm is passed;
grinder gear is pre-disassembled. It needs to make holes for fastening the handle. The last detail can be made of a metal tube, the shape of which should be slightly rounded;
to adjust the gaps between the side stop and the base surface, 4 holes are drilled in the gearbox for screwing in the bolts;
the handle is attached to the gearbox with bolts. Its end protruding from the electric saw is given a horizontal position, holes are drilled and the axis is fed. If the handle is D-shaped, an adapter is installed between the handle and the gearbox - a tube made of thick-walled metal;
the rods are cut into 6 cm blanks, which are given a loop-like shape;
washers are fixed in front of the stop, which corrects the gap;
the handle is attached to the body with an electric motor.

When supplementing such a power saw from a grinder with your own hands with a stationary base made of chipboard or stable plywood, you can make a stationary circular saw for a workbench or desktop.

In both options, it is very important not to make a mistake with the choice of the disk and to correctly calculate the gear ratio. It is advisable to focus on single-phase asynchronous motors, which are equipped with most angle grinders. Three-phase motor systems, which can also take place in a similar design, should not be used without additional capacitors. A separate button can be output as a starting capacitor. In this option, you will need to consider additional grounding and check the electrical safety of the homemade product.

Chain saw from grinder: step by step instructions

In order to recreate a chain saw based on a working angle grinder, we will need:

Bulgarian herself;
a leading sprocket, which is best to buy a new one, but if you have a serviceable spare part from an old saw, you can limit yourself to a used option;
metal to create a bracket to which the guide will be connected;
a set of saw sets from a tire and a chain;
a set of tools, including a drill;
bolts.

The build process looks like this:

1. unscrew the saw blade from the grinder;
2. make holes in the lower part of the metal casing of the device;
3. bolts attach the bracket to the protective shield;

1. an asterisk is wound on the motor shaft;

a guide is fixed behind the bracket ties;
after the chain is put on and straightened, the bracket bolts are tightly fixed.

After that, you can get to work.

Advantages and disadvantages of homemade electric saws from grinders

Power saws, which today can not only be bought in a store, but also made at home, in addition to their main advantage - low cost for their production, have a lot weaknesses. Namely:

a low level of safety for the health and life of the operator working - in homemade products there is no protection against recoil, which in factory electric saws is taken over by the inertial chain brake. And this increases the likelihood of injury and injury;
fragility of tire-chain elements due to the lack of automatic lubrication. The only way out in this situation would be to periodically dip the homemade saw into a container of chain oil;
high risk of overheating of the motor from the grinder due to overloads and prolonged operation.

sadovij-instrument.ru

The desire to improve an existing tool comes for a reason. The main goal of this experiment is to save money. And really, why buy several tools if you can use different nozzles and make a multifunctional tool.

The grinder is known to every economic homeowner, because with its help it is possible to cut metal, and stone, and grind the surface. But you can’t cut trees with such a device, difficulties arise due to the small diameter of the disk. So the craftsmen come up with various nozzles that greatly facilitate the work in the garden.

Why resort to a homemade version?

Often, exactly homemade options tools or improving existing ones is done out of a desire to save money. Using improvised means and parts that are left over from equipment or equipment that has become unusable, craftsmen skillfully make various devices, such as, for example, a grinder chainsaw chainsaw.

The second reason can be considered the desire to have a multifunctional tool that will help facilitate numerous tasks on the farm. The indisputable advantage of such a home-made apparatus is space saving. After all, an additional nozzle takes up much less space in a barn or garage than a full-fledged device.

For alteration, you can use absolutely any brand of grinder. The only point worth paying attention to is that factory nozzles can only fit a limited number of models, so when buying, be sure to check if your angle grinder is suitable for the selected nozzle.

Factory nozzles

Now on sale there are special attachments for the angle grinder in addition to discs. Included with the grinder is a device with which for a short time it can be turned into a chain saw. Supplied in two separate boxes containing grinders and a chain saw.

Nozzle set

The estimated cost of such a set is $83.

Electric saw from grinder

Anyone who has ever worked with wood should have a saw in their arsenal of tools, with which it is much easier to carry out sawing work. Below is a diagram of the conversion of an electric saw, which can be made from a grinder

In order to convert the angle grinder into an electric saw, you must have with you:

Apparatus for welding;
Adapter for cutters;
Small thickness metal roller;
Reducer;
Saw part.

The first thing to do is to weld a movable wheel at the end of the boom. It is very important to make sure that this wheel and contour are the same contour. If this nuance is not taken into account, then the chain will fall off or be strongly stretched. After that, an adapter for cutters is attached to the wheel. The adapter should not be fixed permanently, it should be removable, otherwise difficulties may arise during operation.

A simple and reliable rework option is the following method. We take a tire from an old chainsaw, an asterisk and a chain. Two perforated corners are twisted together. In one, cut a hole for the nut. We will attach an asterisk to it, and so that it is possible to attach a corner on the casing.

Attach the tire to the remaining corner. After that, we fasten the asterisk and connect the chain. That's all the manipulations, as a result of which we get an effective saw.

Video reviews

The presented video review tells how to make a chain saw from a grinder

Another visual video review demonstrating homemade

The main advice that should not be neglected is the observance of safety precautions when working with such tools. A chainsaw or chainsaw in a homemade interpretation can be dangerous and traumatic. If you decide to take such a step, then follow all the recommendations, drawings and diagrams that are indicated in the instructions for the adapter.

Circular saws are essential household tools. Due to their technical and functional properties, today no furniture production or carpentry shop can do without them. Yes, and in private households there are many tasks that would be more appropriate to solve with their participation. The only thing that limits their operation today is the cost, which grows every year, as does the need for them. One of the ways to overcome this barrier and acquire such versatile helpers is to assemble a homemade circular saw,

Given the load and cycle time of power saws, their home production will require an equally reliable basic electrical appliance. Craftsmen advise using a grinder or an angle grinder as it, which almost everyone has. Its traction potential will be enough for sawing wood, spreading bars into slats and other tasks that most users set for it. Consider several ways to make a power saw out of a grinder at home.

Do-it-yourself circular saw: the easiest way to make

In order to start assembling a homemade product, you will need:

metal clamps;
electric drill;
toothed disc;
several pieces of metal corner;
bolt ties of modifications M3 or M5;
correct gearbox;
high-strength steel bars;
wrench.

An engine from a household grinder will act as the power base of the future construct.

Work progress step by step

from the grinder, the disk installed before is preliminarily dismantled;
a disk with teeth for woodworking is taken, which is pulled together by corners. A gap of several millimeters is left, which are regulated by a coupler of bolts;
the body of the grinder - the future electric saw is covered with clamps. At the bottom of the tool, a double metal tape with a thickness of at least 1.5 mm is passed;
grinder gear is pre-disassembled. It needs to make holes for fastening the handle. The last detail can be made of a metal tube, the shape of which should be slightly rounded;
to adjust the gaps between the side stop and the base surface, 4 holes are drilled in the gearbox for screwing in the bolts;
the handle is attached to the gearbox with bolts. Its end protruding from the electric saw is given a horizontal position, holes are drilled and the axis is fed. If the handle is D-shaped, an adapter is installed between the handle and the gearbox - a tube made of thick-walled metal;
the rods are cut into 6 cm blanks, which are given a loop-like shape;
washers are fixed in front of the stop, which corrects the gap;
the handle is attached to the body with an electric motor.

When supplementing such a power saw from a grinder with your own hands with a stationary base made of chipboard or stable plywood, you can make a stationary circular saw for a workbench or desktop.

Chain saw from grinder: step by step instructions

In order to recreate a chain saw based on a working angle grinder, we will need:

Bulgarian herself;
a leading sprocket, which is best to buy a new one, but if you have a serviceable spare part from an old saw, you can limit yourself to a used option;
metal to create a bracket to which the guide will be connected;
a set of saw sets from a tire and a chain;
a set of tools, including a drill;
bolts.

The build process looks like this:

1. unscrew the saw blade from the grinder;
2. make holes in the lower part of the metal casing of the device;
3. bolts attach the bracket to the protective shield;

1. an asterisk is wound on the motor shaft;

a guide is fixed behind the bracket ties;
after the chain is put on and straightened, the bracket bolts are tightly fixed.

After that, you can get to work.

Advantages and disadvantages of homemade electric saws from grinders

Power saws, which today can not only be bought in a store, but also made at home, in addition to their main advantage - low cost for their production, have a lot of weaknesses. Namely:

a low level of safety for the health and life of the operator working - in homemade products there is no protection against recoil, which in factory electric saws is taken over by the inertial chain brake. And this increases the likelihood of injury and injury;
fragility of tire-chain elements due to the lack of automatic lubrication. The only way out in this situation would be to periodically dip the homemade saw into a container of chain oil;
high risk of overheating of the motor from the grinder due to overloads and prolonged operation.

Among the numerous metalwork tools, circular electric saws play a special role. In addition to woodworking and logging significance, they have found their place in furniture production, metalworking and many other economic sectors. Simple and convenient, they provide fast results with minimal stress and health risks.

Unfortunately, it is not always possible to purchase such a unit. But if you have a grinder or angle grinder at hand, then this problem can be solved in no time. About how to make an electric saw from a grinder and what you need to know about it, we will consider in this article.

Required work items

A lot has been said at the moment about how to make an electric saw from a grinder. We will touch on the most common method, for which you must have the following initial mechanisms:

Bulgarian, which will be improved;
set of wrenches;
mount for a gasoline saw;
available arsenal of nuts and bolts of various sizes;
screw for fastening the tire and tensioning the cutting blade;
a tire from an electric cutter;
cutting mechanism (chain itself).

Of course, for the implementation of such technical aggregation, you will also need a drill with different-sized drills. Well, and an experimental area where you can test your know-how for strength.

Main stages of work:

A chain saw from a grinder is made in 5 successive stages:

Initially, it is necessary to disconnect the emery disc from the grinder. To do this, simply remove the bolt that holds it in place;
We wind up a special screw element, which will subsequently hold the saw chain. To do this, take a wrench and tighten as much as possible until it stops);
We take a drill, install drills for metal and make two holes directly in the protective shield of the angle grinder. Their diameter must match the size of the bolt. They are needed in order to fix the tire through them;
With careful movements, we insert the fasteners for the tire into the holes obtained, after which we thread the bolts. They must be securely tightened from the opposite side with wrenches;
At the final stage, the tire is put on, and after it, the chain itself, fixed with regulating screw clamps. But remember that in this case, overtightening the bolt, as well as undertightening, is equally unacceptable. Therefore, strictly ensure that the chain blade sags a little. This will be the optimal degree of its tightening.

That's all, the manufacturing process is simple and within the power of any technique. The main task that needs to be solved before getting down to business is to purchase the appropriate tire and chain. But having a desire is not so difficult.

Less than an hour and minimal cost a power saw from a grinder with your own hands can become your own invention.

A circular saw is one of the universal locksmith tools that is widely used in various sectors of the economy, in metal and woodworking, furniture production and other tasks. The main advantages of disk machines include ease of operation, high cutting speed and accuracy, as well as good maintainability and the ability to quickly replace the cutting disk. If you don’t have a professional or household disc machine at hand, you can make it yourself on the basis of a conventional angle grinder (angle grinder) or grinder.

Self-production of a cutting machine based on a grinder justifies itself from an economic point of view: it is not profitable to buy expensive machine tools to perform one-time housework (cutting logs, metal and wooden profiles, timber and corners, as well as ceramic tiles and other materials). With basic skills in working with welding machines and other tools from the locksmith's arsenal, you can easily make a circular, pendulum or chain saw with your own hands.

We suggest that you familiarize yourself with detailed instructions, drawings and tips for making a grinder saw with your own hands on the video, where you will find many useful practical recommendations and get important theoretical information for converting tools (photo instructions also complement the video for your convenience).

Do-it-yourself circular saw from a grinder

Circular saw designed for simple, but voluminous woodworking work - cutting timber, boards, lining, etc. - can be made quite simply on the basis of an ordinary grinder. It is recommended to take an angle grinder with a disk diameter of at least 125 mm to make the tool universal in use. You can make a circular machine based on an angle grinder according to drawings and without based on an old kitchen table, as well as a home-made frame structure made of metal or durable wood.

Do-it-yourself pendulum saw from a grinder

On the basis of an angle grinder, you can also make a pendulum and assembly cut-off saw for use at home. With its help, you can easily cut the same parts and blanks from wood and metal. The design of such a homemade machine is safer, because. the cutting disc, together with the grinder, is mounted above the countertop. Such a saw from a grinder is made by hand according to the drawings, and also with the experience and skills of a locksmith, it is performed by eye due to the simplicity of its design.

It is quite simple to make a pendulum or mounting saw from a grinder: the design will consist of a frame, a pendulum and a mount for the grinder. The bed can be made from shaped pipes by welding a frame from them and installing a sheet metal platform with a thickness of 3 mm or more on it. A metal bracket is attached to the platform for attaching a pendulum saw and an emphasis for fixing the workpiece during cutting. The emphasis is best done in the form of a rotating protractor, which will allow you to conveniently set the angle between the part and the saw blade.

It is also necessary to make a hole (cut) in the table top of the machine at the point where the saw blade touches. The pendulum in this design is also made of metal profiles by welding (you can see the drawings below on the page). It must be fixed on one side to the bracket, and on the other side, fix the mount for the angle grinder on it. This T-pendulum must have a movable joint to allow the cutting disc to move during operation. The connection can be made from a rolling bearing and bushing, as well as a rubber band or spring (to return the mechanism to its original position).

Do-it-yourself chain saw from a grinder

The two previous types of home-made machines are good because, if necessary, the grinder can be dismantled and used in the usual way. Unlike them, for the manufacture of a chain saw from a grinder, it will have to be modified forever. You can also make a chain saw from a grinder with your own hands, but compared to the two previous types of hand-made machines, it is a less practical and less safe device. If you have an old grinder that you do not mind modifying for various cutting jobs, then you can make a chain saw out of it.

Such a saw may be needed on the farm for cutting branches and other wood structures where it is difficult to get with a conventional saw. To make a chain saw, you will need a bar mounting bracket, which can be made from a metal profile. The saw chain is pulled on it and the drive sprocket is wound on. It is advisable for such a design to choose a grinder with an adjustable speed of disk rotation.

Now you know how to make a pendulum, circular and chain type cutting machine from an angle grinder.