Circular saw from an ordinary grinder. How to make a universal sawmill from a Ural chainsaw with your own hands Do-it-yourself sawmill from a grinder

Having your own sawmill is a huge plus in household. Such a unit is needed for sawing and dissolving logs into tes, chopping blocks and various bars that are needed during construction. Therefore, the owners tend to make a homemade sawmill with their own hands. The main financial costs are borne by the electric motor and the saw blade itself. Everything else can be found in your yard and garage.

Making a machine from a grinder

It is necessary to approach the creation of a large sawmill gradually. This is due to special safety precautions when working with saws.

The most elementary type of machine is a sawmill from a grinder. It is assembled with its own hands in just a few hours, if there is a ready-made saw blade. Of course, it is difficult to call it a sawmill in the broad sense of the word, however, in the first case, it will fit perfectly to gain experience. Good grinder has a power of about 2 kW and a speed of up to 3 - 5 thousand rpm. With this device, boards with a thickness of not more than 50 mm are dissolved and used as an additional circular saw in carpentry shops.

For the manufacture of this sawmill you need: the grinder itself, a 250 mm circular saw, small table with a table top and a sheet of iron with a thickness of 1 - 1.5 mm. Protective cover removed from the grinder.

The tabletop is covered with thin tin for better sliding of the lumber. Then a slot is made in the center of the table for the saw blade. This gap should be larger than the disk by 3-4 cm in length and 1.5-2 cm in width. This is necessary for saw adjustments and self-removal of sawdust. The saw blade is fixed to the grinder with standard nuts. Then this tool is securely fixed from the bottom of the countertop with clamps and bolts. In this case, the saw part of the disk itself should protrude from the top of the table by about 10 cm.

The sawmill is almost ready for work. You just need to install and strengthen the ruler along the sawing with clamps or bolts as in the photo. It is needed to stop the board during the dissolution. And also it regulates the width of the production of lumber.

The height of the projecting part of the saw can be set by raising or lowering the tabletop. To do this, one edge is fixed to the hinges, and the other to high adjusting bolts. Then such a machine can cut grooves and quarters on the boards, which is often necessary in the production of joinery.

Sawmill from a manual circular saw

Most fast way manufacturing a sawmill is the use of a standard manual circular saw, which can be bought at any economic or hardware store. It, just like a grinder, is fixed from the bottom of the tabletop, a slot is made for the disk and a ruler for emphasis. The machine is ready to work.

Such a device has one advantage over a grinder machine. AT standard model manual saw blade tilt cutting tool from 0 to 70 degrees, which allows you to make cuts at different angles. This is necessary in the manufacture of, for example, triangular skirting boards or figured rails. in the manufacture of window wooden frames often you need a special coal saw (charcoal saw), for the role of which hand-held circular saws are just right.

Large makeshift device

For such a powerful unit, a reliable frame is made of channels and corners. On it will be mounted: an electric motor with a power of 3 - 5 kW, a movable subframe and an adjustment system for the operation of the machine. The sawmill device also includes a carriage, guide rails and devices for keeping logs from moving.

If in circular machines the operator needs to feed lumber to the saw, then the opposite is true here. The log is fixed on the base in front of the bed, and the sawing unit itself is pushed to the workpiece along the rails. At correct installation and adjustment of moving parts, the operation is smooth and effortless on the part of the operator. Such a machine is capable of cutting workpieces horizontally and vertically. The rotation of the engine with the saw is carried out by the worker.

When moving forward, the disc cuts horizontally. After the pass, the operator turns the motor 90 degrees, the saw becomes in vertical position. A backward movement is made with simultaneous sawing of the log. After that, the subframe with the engine is lowered by the adjusting screw to a predetermined size. And then a new cycle of work is repeated. It takes only about 2-3 minutes to move forward and backward.

Of course, you can make a sawmill that will cut both horizontally and vertically at once. But for this you need two electric motors of the same power and speed. At the same time, the device of the unit will become significantly and unreasonably complicated, which is unprofitable at home.

Homemade corner circular sawmill can cut from 5 to 8 cubic meters of wood in one working day. It is used to make:

• preparations of running lumber;
• timber multilayer for construction of houses;
• radial and edged lumber for carpentry;
• parquet board;
• make individual cutting of logs for special purposes.

An angle sawmill has a number of advantages over a band saw of the same type. Namely:

• the smallest amount of sawing waste;
• high reliability;
• eliminates the waviness of the surface of the board. This happens with a poorly tensioned saw band;
• high quality cutting;
• sawing takes place on one installation.

At large woodworking enterprises, the Finnish circular sawmill Kara is used. It is a two-saw system with a moving belt for feeding wood. Able to dissolve logs up to 80 - 90 cm thick. Productivity up to 20 cubic meters per hour. She has complex system management. Service staff 2 people. The disadvantage is high price not only for the sawmill itself, but also for the saw blade, the cost of which is about 20 thousand rubles. For sawing hard rock wood, such as oak or larch, are used with stellite tips. These saws are several times more expensive than ordinary ones.

Self-made production of such machines is not carried out due to their complexity and the high cost of individual components.

Many different tasks can be solved with the help of a homemade circular grinder. Such a machine will indispensable assistant when repairing 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. It is enough to be able to use a hand tool and have necessary minimum 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, purchased specifically for the machine, the engine from washing machine, drill or 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 hand power tools. 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. Motors from old washing machines are easy to connect, 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.

Drill, as a homemade drive circular machine, has some advantages over the options already listed. The main advantage is the ability to abandon the gearbox.

As a rule, drills have low rpm 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. Partially, this problem can be 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 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 bed. 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 own production furniture or making wooden products in industrial volumes - best solution there will be a purchase of 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?

Protozoa a circular saw from a grinder, made by hand, is a metal table with 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 disc in the regular place of the grinder. 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.

AT 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. You shouldn't do it with plastic ties or clamps and 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 speed rotation 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 clamp.

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 and building materials store.
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. You can do this with inside 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 large number 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 he leans back. If you don't do this simple protection, the risk of parting with several fingers increases significantly.

Additional Security Measures

Availability powerful engine and workpieces moving at high speed present a serious hazard to both the operator and those in the vicinity. 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:

1. Do not place the switch on the working surface of the table. It must be placed on the side surface.
2. Be sure to make a protective cover.
3. 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 you need a system of pulleys and a belt. 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.

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 firmly fix the angle grinder to the frame, and work surface fasten together with the disc shaft after installing the belt, pulling 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

Have the whole range at home electric tool too hard. For example, a circular at home is rarely required. Sawing boards can be done with a modernized grinder.

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

True, this option is suitable for short cuts. sheet materials or cut thin rails. With a long cut length or on thick bars, there is risk of 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 handmade chain saw from Bulgarian. 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, cross-cutting 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.

1. To do this, a grinder with a wood disk is fixed on turn 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.
2. The gearbox housing has threaded holes for fastening standard handles. With the help of corners and these holes, the grinder must be attached to the moving part of the machine.
3. The back of the case is attached to the board with a clamp. Protective cover The disc can be used from any power tool of a suitable size.
4. Closer to the vertical support you need to fix 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 serves to return 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. Disc diameter choose, 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 trimming machine. 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. 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 free space and a large amount of work. Therefore, the entire structure can be made more solid, more massive, and, therefore, more reliable.

bed frame 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.

Above metal frame a desktop is attached from a wide board or thick plywood. The workpiece will move along it. Thrust corner equipped with a movable mount for adjusting the cutting width.

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

On the side of the machine are governing bodies: socket and on-off buttons. AT 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 - angle grinder. Therefore, using it as a homemade circular saw, you need to pay attention to the nuances.

1. The duration of continuous cutting should not exceed 15-20 minutes to avoid overheating of the motor.
2. 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.

The decision to make a circular from a small grinder - great option in terms of economy Money. To design a sufficiently effective tool, the skills of a professional locksmith are not required. With a serious approach to business, you can cope with the task with the help of improvised tools and materials. Let's find out how to make a circular from a grinder?

Necessary materials and tools

How to make a circular grinder with your own hands? This will require the following tools:

• actually the Bulgarian herself;
• circular circle;
• sheet metal (tin or galvanized);
• a set of fasteners (bolts, nuts, etc.);
• screwdrivers, pliers, wrenches;
• electric drill with drills for metal;
• metal corners.

Making a sliding stop

From the grinder requires the creation of a sliding stop. As the latter, it is most rational to use several that will be located on both sides of the saw blade. It is recommended that the lower edges of the specified structural element be rounded, which will not allow them to cling to surfaces that will be subject to processing with a home-made circular.

Corners must be fastened at both ends. To achieve optimal clearance, washers can be placed under the fastener heads.

Next, a metal clamp should be fixed on the body of the grinder, the screed of which should be located below. A strip of metal is threaded here, made of tin or galvanized folded several times. The ends of the latter are connected to the fasteners located at the ends of the previously assembled sliding stops.

Gearbox preparation

A circular grinder requires a working gearbox. The specified mechanism is extracted from the tool, after which the best places for drilling holes in metal. Such openings will be required to install the axial handle of a homemade circular. Naturally, you can try to hold the tool by the standard side grinder holder. However, the creation of even cuts in this case will become extremely problematic. As practice shows, holding a home-made tool with a rotating circular disk is beyond the power of even physically trained craftsmen.

Axial handle

To create an axial handle that will allow you to hold homemade tool in a stable position, it is best to use a metal rod or tube. Holes are drilled at the ends of the workpiece, which will serve to attach the structural element to the grinder gearbox. The prepared axial handle is attached with fasteners to the mechanical part of the tool.

Adjusting rod

To homemade circular from the grinder allowed to adjust the depth of cut, it is necessary to provide a special rod in the design. Manufactured structural element from a steel bar with a diameter of about 4-6 mm. One end of the workpiece is bent in the form of a loop, splashed and fixed with the front bolts of the stop from the corners.

A thread is created on the tail of the bar, which will subsequently enter a special adjustment opening on the tool handle. Before installing the rod, one nut is put on its thread. After the tail of the element is threaded into the hole on the handle, the second nut is screwed on. Due to the tightening and loosening of these fasteners on the thread, the depth of cut is actually adjusted during the operation of the self-made circular.

How to make a stationary grinder?

The main difference between the design of handheld and stationary tools is the presence of a bed. Work is performed in the following sequence:

1. A special table is being prepared, which is covered with a galvanized or tin sheet. To fix the selected material on the plane, it is enough to pull it along the edges of the table with metal corners. The base on which the mechanical part of the tool will be installed must be as stable as possible. Otherwise, rocking will lead to inaccurate sawing of materials. In addition, table vibrations can be traumatic.
2. According to safety requirements, circular disc should not protrude a third of its diameter above the plane of the table. Therefore, in order to cut wooden block about 10 cm thick, you will need a cutting wheel with a size of 35 cm or more.
3. A stationary circular grinder should be made on the basis of a sufficiently efficient engine. Here it is necessary to use an engine from a grinder with a power of at least 1 kW.
4. The basis of the adjustable stop will be a metal corner 7-8 cm long. The specified element is superimposed on the table and fixed with bolted connections.
5. A stationary circular grinder involves the creation of a shaft. The latter is recommended to be purchased in ready-made, since critical errors may occur during its self-turning. You should choose a shaft that contains fasteners to securely fix the circular disk.
6. A V-belt pass will serve as a transmission.

If necessary, a do-it-yourself circular grinder can be made on the basis of a more powerful engine removed from an old washing machine. In general, the choice of the engine here is limited only by the estimated power of the future instrument, which must be obtained at the output.

Safety measures when operating a homemade circular

Before starting a self-made circular saw, it is worth taking measures to avoid injury. If designed hand tool, the start button must be located away from the rotating blade. In the case of a stationary saw, the table on which the mechanical part is located must first be screwed to the floor.

When operating such a potentially dangerous device as a homemade circular saw, elementary vigilance must be observed. First of all, you should never line up with a spinning disc. After all, the latter can jump off the shaft when gaining critical speed. Also, do not bring your hands too close to it, which should be no closer than 20 cm from the cutting element.

People who at least once encountered the construction wooden buildings understand the need for a sawmill. Manual preparation wooden elements requires a lot of time and effort. A homemade sawmill will greatly facilitate the work.

The construction market offers many various devices for sawing wood. However, if the volume of woodworking or carpentry is not large enough, then the need for significant financial investments is highly questionable. A home-made sawmill will fit into the size of the site and help get rid of unnecessary costs.

General concepts about sawmills

The main purpose of the sawmill is the longitudinal sawing of wood. In this way, it is possible to make a beam, a board, a rail, etc. In addition, it can be used for cross-cutting wood products and trimming branches and other irregularities. All sawmills include the following main elements: a cutting tool, a machine frame (base), guides for a tool and a wooden workpiece, a drive for a cutting tool.

According to the type of cutting tool, there are disk, chain and sawmills. The simplest is a circular sawmill, which is based on sawing wood with a rotating circular saw. In this case, the disk attachment point is stationary, and the wooden blank is fed progressively.

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The design of the sawmill

most simple design has a homemade sawmill with a circular saw. Such a machine consists of a workbench with a flat wooden countertop, fixed from the bottom of the workbench of a circular saw with electric drive, guide bar. wooden blank fed to the circular saw longitudinally, manually. A slot is made in the tabletop of the workbench for the entry of the cutting disc. The disc itself is mounted on the motor shaft, which is permanently fixed on the workbench. A guide bar is installed on the tabletop, which limits the transverse displacement of the workpiece during sawing.

If it is necessary to cut large workpieces, for example, chipboard sheet, the manual feed of the workpiece is very difficult. In this case, it is necessary to complicate the design of the base of the sawmill. The workpiece is mounted in a carriage with rollers for moving along the machine frame along the guide rails. This design makes it easier manual feed blanks for cutting tools.

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Making a sawmill: a simple design

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Tool and equipment

For the manufacture of homemade sawmill prepare the following equipment and tools:

• welding machine;
• Bulgarian;
• milling cutter;
• vise;
• hacksaw for metal;
• a hammer;
• file;
• electric drill;
• a set of taps and dies;
• chisel;
• pliers;
• screwdriver;
• wood saw;
• calipers;
• roulette.

As a simple design, a sawmill from a grinder is recommended. The base (frame) of such a sawmill can be made of a metal corner or wooden beam in the form of a table. Any sturdy workbench without a countertop can be used. The height is selected at the discretion of the consumer, taking into account the ease of maintenance.

The tabletop is made of chipboard sheet 18-20 mm thick (width and length - in accordance with the dimensions of the stand with an allowance of at least 10 cm on each side). The surface of the tabletop can be veneered with thin sheet metal. In the central part (along the length), stepping back from the edge by about 1/3 of the sheet width, a slot is cut with a length of 40-50 mm greater than the diameter of the cutting disc, and a width of at least 20 mm.

A standard circular saw blade with a diameter of up to 500 mm is mounted on the motor shaft. The disk is immersed in a slot in the tabletop, and the electric motor is securely fixed to the tabletop. As an electric motor, you can use the grinder drive, which has a power of up to 1.8 kW. In this case, the body of the grinder is attached to the countertop with clamps and securely screwed on. The cutting disc is mounted on the grinder shaft with a standard mount. Disk offset from reverse side countertops must be at least 100 mm.

The tabletop is attached to the frame so that the grinder is inside the frame, i.e. on the surface of the workbench, only a part of the cutting disc protruding above the slot is visible. The guide bar is made of a board about 20 mm thick and at least 80 mm wide. The length of the board corresponds to the length of the countertop. At both ends of the board, standard clamps are fixed for fastening to the tabletop. You can make a clamp yourself if you bend a steel strip 3-5 mm thick and about 20 mm wide at a right angle. A threaded hole is drilled in the lower flange of the strip and a thumb screw (M8) is screwed in. AT vertical rack strip, two holes are drilled for fastening to the end of the guide bar. Such

The guide bar is fixed with clamps on the base so that when resting on it, the workpiece is sawn to the required width. The wooden blank is manually advanced to the disk. The machine turns on and the disk begins to rotate. Smoothly moving forward, the workpiece is sawn.