To perform the primary processing of wood, special equipment is used - a sawmill. There are several types of equipment, each of which has its own purpose, design features and characteristics. You can purchase a ready-made device, but a do-it-yourself sawmill will cost much less, and it will also have properties that will make the equipment as practical and productive as possible when performing a certain type of operation.
Classification of sawmills
In the last 10-15 years, the construction industry has been developing quite rapidly. This is accompanied by the use of new types of materials, the development of new technologies and the need to use special modern equipment.
Optimum for wood processing is the use of sawmills. Devices are classified according to the following factors:
Particular attention should be paid to the classification of equipment depending on the design features.
Belt type equipment
This type of mechanism for the primary processing of wood, according to experts, is the most practical and popular among users. As a rule, the cost of this type of device pays off in about a few months after their operation. Of no small importance is the fact that the level of waste when using band sawmills does not exceed 16%.
As for the negative characteristics of sawmills belt type, then the cutting element, presented in the form of a saw band, needs to be replaced periodically. The greater the amount of material processed, the more often you have to change the tape.
All band sawmills are divided into 2 large groups: horizontal and vertical, each of which has both design and functional features.
Horizontal band saws are equipped with cutting elements located in a horizontal position with respect to the floor surface. The peculiarity of working with this type of equipment lies in the fixed position of the working material. To work with it, the movement of the log itself, fixed on the frame, is required.
There are also vertical band sawmills. Their peculiarity lies in the fact that the carriage is fixed in a stationary position. The movement of the log is provided by the movement of the frame. Vertical machines refer to professional equipment. The cutting element of these devices is a double-sided band-saw. Thanks to this, sawing wood is carried out by reciprocating movements of the saw.
Band machines for sawing wood are also classified according to the type of drive. The most common among users are machines, the design of which is equipped with an electric motor.
Equally popular are sawmills equipped with an internal combustion engine that runs on fuel such as gasoline.
On the market you can also find models of tape machines with combined type drive. They are equipped with both electric and gasoline engines.
Regarding mobility tape equipment, it can be two types:
- Portable - equipped with wheels. Such a machine can be moved to the place necessary for work;
- Stationary - the device does not need the construction of a special foundation. Simply install it on a flat surface.
These design features of band sawmills ensure their practicality and ease of operation.
Mini devices
The small dimensions of this type of device suggest their use in small businesses or at home. With their help, you can process a small amount of wood. Among the advantages of mini-sawmills, one can single out the simplicity of their design, economical consumption electrical energy, high level productivity and ease of use.
Mini-sawmills produced under the Logosol or Ural brand are in rather great demand among buyers.
Frame type machines
First of all, attention should be paid to big sizes machine tools. As a rule, they are used for processing large volumes of wood in large enterprises. When choosing frame sawmills, it should be borne in mind that they require a large amount of electricity to operate.
When installing them, you must first equip a stable foundation. This requires additional material costs.
Disc sawmills
Used to work with wood that has a round cross section. A saw is used as a cutting element disk type, the diameter of which can vary between 400-650 mm.
Due to the fact that the saw is mounted on a rotary spindle, users have the ability to rotate it 90 degrees.
For work with disk power-saw benches special training of the operator is not required. Each of the above types of sawmill has its own design features and purpose. These indicators must be taken into account when choosing equipment.
Stages of self-production
The sawmill needs special woodworking equipment - a sawmill. You can buy it ready-made in the store, but it will be quite expensive. Therefore, the question of how to make a sawmill at home remains relevant.
Homemade chainsaw device
Do-it-yourself chainsaw sawing logs is the most common option for making this type of equipment at home. The process takes a little time, and homemade is able to work long time without repair.
For work you will need the following materials:
- welding machine with electrodes;
- screws;
- nails;
- columns;
- electric saw;
- roller bearings.
For the manufacture of the case, it is better to use a corner. In this case, the design will be resistant to vibrations. In addition, such a case will have strength and resistance to temperature extremes.
Before you make a sawmill with your own hands, experts advise to pay attention to such points:
Homemade sawmill from a chainsaw, the drawings of which can be found in the specialized literature, are quite simple to manufacture. Production is carried out according to the following scheme:
You can also use the option in which the log remains stationary, and the cutting part of the machine moves along a special ruler. Chainsaw installation is carried out using special fasteners on the equipment frame.
Upon completion of work, it is necessary to check the strength of the machine and adjust its functions.
Bulgarian fixture
There is also the possibility of making a sawmill at home, the basis for which is a grinder. This version of the machine has the practicality of operation and ease of implementation. To perform the equipment, you can follow these instructions:
The grinder is an angle grinder. Therefore, the following points must be taken into account:
- The duration of continuous use of a home-made sawmill from a grinder should not exceed 20 minutes in order to avoid overheating of the machine motor;
- Standard disk protection is not suitable for homemade device. It is necessary to make a protective cover with your own hands.
Before operating this type of sawmill, the mobile chain mechanism needs to be checked and adjusted beforehand. The depth of cut can be adjusted using the nuts, which are either tightened or loosened. Manual option sawmills are simple in design. This greatly simplifies working with it.
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 home-made 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 herself, Circular Saw 250 mm, a small table with a table top and a sheet of iron 1 - 1.5 mm thick. 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 table top. 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 hand-held circular saw, which can be bought at any household 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. The standard hand saw has a 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 powerful unit make a reliable frame 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 vertical. 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.
A self-made angle 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 the 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.
Home-made production of such machines is not carried out due to their complexity and the high cost of individual components.
When carrying out various kinds of carpentry and construction works it is necessary to use lumber, which can be purchased at sawmills or made by yourself. Versatile sawmill with their own hands can be made by each homeowner, which will allow you to independently cut and process wood.
Factory-made chainsaws are distinguished by reliability, ease of operation and versatility of use. Unfortunately, they come at a high cost that is often beyond the reach of most homeowners. At the same time, it is possible to produce functional sawmill with their own hands, and the cost of performing such equipment will be minimal.
It is possible to choose the desired modification of woodworking equipment, which in its functionality will fully meet the requirements of the homeowner. These can be both simple options that involve only cutting logs, or multifunctional installations that can not only provide high-quality even cut, but also the subsequent processing of lumber.
Varieties of sawmills
The most widespread today are the following three types of do-it-yourself devices for sawing logs with a chainsaw, which differ in their design:
- Tire.
- Tape.
- Disc sawmill.
Each type of woodworking equipment has its own specific advantages and disadvantages. Thanks to their relatively simple design, you can easily perform a sawmill on your own, significantly reducing your costs for the purchase of the necessary equipment.
Relatively simple design disk installations makes them easy for most homeowners to do. Due to their ease of assembly and versatility, these types of woodworking machines are most widespread and are found everywhere. The basis of this design will be a circular saw, which is mounted on a spindle electric motor. Additionally produced solid foundation, above or below which a shaft with a saw and an electric motor are fixed.
Sturdy and reliable frame disk installation can be made of metal or wooden parts that are welded or fastened together with nails and self-tapping screws. The desktop can be made from sheet metal, it is only necessary to ensure the ideal geometry of the structure, which makes it possible to guarantee the highest possible quality of sawing wood.
The use of circular sawmills allows you to make slats of various sizes, produce timber, veneer, cut boards with the required length and width. Due to the high rotation speed of the saw, it is possible to ensure that the logs are cut with even, high-quality edges and cuts.
Belt-type plants combine simple design and excellent performance. Accordingly, they are popular not only in everyday life, but are also widely used in sawmills and enterprises that produce lumber. The advantages of this type of equipment include its high performance, as well as the possibility of sawing large logs weighing more than 300 kilograms.
For the manufacture of band sawmills the following will be required:
- Pulleys.
- Channel.
- Metal corners.
- Pipes with different diameters and sizes.
- Metal structures for the manufacture of sleepers.
The manufacture of such a sawmill begins with the manufacture of a frame that looks like the letter P and is made from a corner or channel with dimensions of 50 by 100 millimeters. standard sizes bed is a length of 8 meters and a height of at least 15 centimeters. To increase the strength of the base, the channels are additionally tightened with pipes and a corner, which will allow the base to withstand the maximum possible load.
Next, proceed to the implementation of the mobile cart. For this, a steel plate is used, the thickness of which is 40 millimeters. An electric motor will be responsible for driving the trolley, the power of which should be 10–12 kW.
A saw is attached to the trolley with a chain drive, which is fixed through a pulley on the electric motor shaft. A steering wheel handle is welded to the side of the movable cart, which will be responsible for moving the mobile structure along a fixed base.
or logosols differ in their structure from other similar devices. With the help of such manual equipment, it is possible to carry out longitudinal sawing of logs, making high-quality slats and veneer. Thanks to its compact dimensions, the logosol can be installed both on outdoors, and inside a small workshop or wooden shed. On such a sawmill, it will be possible not only to cut logs, but also to produce small-sized blanks with a non-standard shape.
Homemade tire sawmills are made using a chainsaw blade, the use of which will somewhat simplify the design of the equipment, reducing the cost of its arrangement. The basis of the design is metal truss, the height of which usually does not exceed 1 meter. The chainsaw moves on a metal base on a small mobile cart.
Having a high-quality scheme of a sawmill on hand and choosing the right blade length from a chainsaw, you can independently make such a machine that will provide high-quality sawing of logs. It will be possible to decide how to make a sawmill with your own hands, saving on the purchase of components for equipment.
Process details
Before proceeding directly to the manufacture of the sawmill, it will be necessary to pay attention to the following design features machine:
On the network you can find relevant videos that tell you how to make a sawmill at home.
The easiest way to perform a household sawmill from a grinder or Ural chainsaw, which reduces costs and subsequently ensures the highest possible quality of wood processing. The total cost of manufacturing such a machine will not exceed 10,000 rubles.
You will need the following items and tools:
A home-made sawmill from a chainsaw, the drawings of which can be found on the Internet, will greatly simplify the sawing of logs and wood processing.
Step by step manufacturing instructions
You can start manufacturing a homemade machine only if you have a high-quality drawing scheme on hand, which will be optimized for the necessary requirements.
In each case, the manufacturing technology of sawmills from gasoline and electric saws can vary significantly, depending on the chosen scheme of the machine.
Making a sawmill with your own hands is not particularly difficult. You will need to find a high-quality scheme on the Internet, select all the materials used and, in full accordance with the available documentation, perform woodworking equipment that is universal in use. The cost of manufacturing a homemade sawmill will not be too high, while in terms of functionality and ease of use, it will not lose to factory options.
Many different problems can be solved with homemade circular from Bulgarian. 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. Enough to know how to use 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, 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 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.
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 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 - 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?
The simplest do-it-yourself circular saw from a grinder 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 on high speed. 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 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 secure fastening, you must use the clamps that come with some angle grinders or pull the grinder to the frame 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 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 saw through plywood using 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 do not make such a simple defense, 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:
- 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 disc and the grinder engine. For reliable operation, a system of pulleys and a belt is needed. One pulley is mounted on the grinder shaft, the other shaft 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
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.
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, 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 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.
- 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.
- 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.
- 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 angle of contact of the two planes is provided with rotary hinges, then it will be possible to adjust working height 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 of 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 desktop is attached 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 removing 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. 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 - 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.
