The circular saw is widely used by home craftsmen for various types works. Manufacturing manual circular from a grinder - a simple process that does not require special skills. It can be done with the help of improvised materials. But it is important to consider that such a tool is not able to completely replace a professional device.
Circular grinder is of two main types.
This is a modern unit with a narrow scope, capable of adequately competing with stationary equipment. It is used for periodic household operations and in private workshops when assembling furniture.
This device is necessary for carrying out a significant amount of work: sawing, grinding, drilling, planing, tool sharpening. Compared to the mini-circular, the stationary unit is more massive and reliable in design.
Circular from the grinder is made using the following means:
Video: The whole process of making circulars from angle grinders
The design of a homemade circular saw includes the following main elements:
The optimal choice of drive for the machine is the engine Bulgarians with a power of about 1 kW. Clamps are included with the angle grinder, allowing you to fix it on the bed.
The engine of the tool has a high speed and can function for a long time without interruption. It is recommended to choose an angle grinder with high power, robust gearbox and equipped with a soft start function.
It consists of several metal corners located on both sides of the saw blade. The lower edges of the sliding stop are rounded to increase the ease of use of the saw.
It ensures a stable position of the circular saw. Made from metal rod. There are holes at its ends. The handle is attached to the circular using fasteners.
Allows you to adjust the depth of cut. It is performed from steel bar with a diameter of 5-6 mm. One end of the workpiece is bent into a loop and secured with front bolts. A thread is provided on the shank of the bar, where the nuts are screwed.
For effective work A circular saw uses a system of pulleys and a belt. Need to ensure disk rotation speedat approximately 6,500-7,200 rpm. You should choose two discs with different diameters: in one it is equal to 0.7 of the diameter of the other.
If a belt drive is used, it is recommended to provide a proper tensioning system: the angle grinder is rigidly attached to the frame, and the working surface with the shaft is fixed after the installation of the belt.
A circular grinder is made by hand in several stages:
It is necessary to ensure the stability of the table, eliminating possible rocking. As a frame, you can choose a metal profile structure. For the manufacture of the table surface, you can choose an iron sheet, plywood, glass, chipboard. There must be a slot for the cutting disc.
The grinder should be fixed to the bar under the table top with clamps. Threaded connections must be fastened with fasteners. When placing the disk, it is necessary to ensure that a significant part of it protrudes above the tabletop. A protective visor is installed above the disk.
A metal corner is used to create a thrust bar. It is recommended to install it on a special plywood. The plate with the bar must be fixed to the countertop with clamps.
It is necessary to remove the wires and connect them to the extension cord. You can fix the wires under the table top with a stapler.
You need to check with your hand how easily the disc turns. It is worth further checking its progress when relieved stress. To control the efficiency, a short-term start-up of the circular is performed.
The tool is ready to go. From time to time, the engine temperature should be checked for overheating. Long-term loads on the motor and angle grinder gearbox are unacceptable.
When working with a circular saw, observe certain rules safety precautions:
With proper observance of all stages of work, make it yourself circular saw is an easy task. In this way, you can save a lot of money and time. Such a tool will be useful when performing various tasks around the house.
Do-it-yourself circular grinder - perfect solution for those who do not want to spend additional financial resources on such factory production. Designing a tool does not require you to have a rank professional locksmith, however some basic plumbing skills will definitely come in handy. With due care, your work will be rewarded a hundredfold.
REQUIRED TOOLS AND MATERIALS
Bulgarian Bolt screw DrillMetal corner PliersReinforcement bars ViseProfile pipe Washer
ExpandThis option is quite appropriate if you have an engine from a grinder lying around at home (you can buy it cheaply at the construction market), a rectangular shaped pipe and steel corners. To make a circular, you should take care of making a sliding stop, an axial handle and an adjusting rod.
How to create an emphasis:
We make an axial handle for a circular grinder:
How to make an adjusting rod:
Although the main difference between a stationary and a table saw from a grinder is the height of the frame, here you will also need detailed diagram designs. Next, we will consider each feature of the manufacture of such a circular:
Now you know how to make a circular grinder without resorting to services professional craftsmen. Knowing the technology and having a set necessary tools and materials, you can easily cope with this task. This work is economical and rewarding, so this chance is worth using!
A do-it-yourself circular saw from a grinder can be made with little labor and in a short time.
However, you need to understand that such a tool is not a full replacement for professional equipment and is a temporary solution.
The main parameters of the grinder selected for conversion into a circular saw are the engine power, the strength of the gearbox and the presence of a soft start.
It is very important not to use saw blade during work on the conversion of the grinder into a circular saw.
You can use an old emery disc or make a dummy disc of a suitable diameter out of cardboard.
To make a circular saw from a grinder, you will need the following materials and tools:
The first preparatory step will be the manufacture of the base. It can be a strong wooden box with even walls or a frame frame assembled from a metal corner.
The base on which the circular saw from the grinder will be mounted must be wide and stable enough.
If there is no ready-made, then you can collect it from improvised means. For example, from chipboard or boards and plywood, fastening them with screws and liquid nails.
The second preparatory step is to make a stop for the body of the grinder. It is assembled from suitable-sized boards or pieces of chipboard.
The thickness of the stop for the body should be such that the protective cover of the grinder disk fits snugly against the side surface of the base box without gaps and cracks.
The length of the stop should be sufficient to securely fasten it to the side surface of the base and install brackets or clamps fixing the body of the angle grinder.
It is advisable to provide a place for fastening the hose for removing sawdust from working area. It should be located in the direction where the movement of the disk is directed, otherwise it will be useless.
When choosing the length of the stop, remember that it will be mounted diagonally on the side surface.
This is done to regulate the depth of cut of the circular saw by moving the grinder body along the stop.
The width of the stop is approximately equal to the distance from the lower edge of the protective cover to the edge of the grinder body.
The stop is attached to the side surface of the base with screws and glue. The edges of the stop should not protrude beyond the edge of the future working surface. The edge of the protective casing of the disc must not protrude beyond the edge.
The third preparatory step is to attach the work surface to the base. The working surface should be smooth and even, without chips and burrs.
When installing it Special attention care should be taken to ensure that the edge is flush with the side surface to which the grinder will be attached.
Other edges should not protrude much beyond the base, so as not to violate the stability of the structure during operation.
Chipboard, plywood, metal sheet can be used as a material for the working surface.
Making a circular saw from a grinder with your own hands is almost complete. Only the final stage remains - attaching the grinder to the stop. This work should be carried out only with the tool de-energized to avoid injury.
With the help of plastic clamps or in another reliable way, the body of the angle grinder is fixed on the stop plane.
The edge of the protective cover must not protrude beyond the edge of the work surface. The casing itself must fit snugly without cracks and gaps to the side surface.
Hand check the ease of rotation of the disk. It should not wedge and touch the details of the structure. There must be sufficient clearance between the disc and the side surface.
After making sure of this, you can make the final assembly of a homemade circular saw with a working saw blade.
By shifting the body of the angle grinder along the stop, the required depth of cut is set, and the body is rigidly fixed with brackets and screws.
Once again, the saw blade travel is carefully checked with the tool de-energized. After that, a short start is performed to make sure that there are no beats and extraneous vibrations.
After making sure that the homemade tool is in good condition, you can get to work. Periodically it is worth checking the temperature of the engine to avoid overheating and failure.
You should not give a long-term load, since the engine and gearbox of the grinder are not designed for this mode of use.
In addition, when using a homemade tool increased attention should be given to safety. If a tool malfunction is suspected, work should be stopped immediately.
Any work to eliminate breakdowns or reconfigure the tool should only be carried out on a completely de-energized equipment, disconnected from the mains.
Also, do not use a saw blade that is missing at least one tooth.
Mine homemade tool allows significant savings cash. With timely care, it can last a long time.
Carefully executed assembly and adjustment can ensure the reliability of its use.
But in addition to observing the safety rules, when working with power tools, you should observe general rules safety: do not drink liquids containing alcohol, prevent littering of the area adjacent to the workplace, remove chips and sawdust in a timely manner to avoid fire.
Attention should also be paid to clothing: it should not have hanging ends that can be captured by the tool.
Hello dear modellers! I think everyone has faced the problem of making rails for their projects. Therefore, it was decided to build a circular on the basis of the grinder. The idea is not new, a lot of flocks have already been written on the Internet, well, let me put in my five cents. I warn you that a circular (especially a handmade one) is a dangerous tool! I, as the author of this article, am not responsible for your life and health!!!
To build this unit, we need:
1) Bulgarian (with maximum speed - 10,000 rpm)
2) Disc 125mm for wood (with revolutions - 10,000 rpm)
3) Sheets of metal 4 mm thick. and 2.5 mm.
The speed of the disc and the grinder must match, because if the speed of the grinder is too high, the disc may fly apart, and if it is too low, the cut will not be clean.
First, from a sheet of metal 4 mm thick (it is better to take 5 mm), I cut out a “table” 450 mm in size. at 340mm. and cutout for the disk.
Then he tried on the grinder along with the disk. Marked where it will be attached, drilled a hole and screwed it with a bolt. The second fixation point is located on the corner (more on that). 
Further from a sheet of metal 2.5 mm. bent the corners. After fitting the entire structure, it was pre-assembled on bolts and nuts. After making sure that the grinder does not hang out, but is well fixed, the bolts and nuts were replaced with rivets. 
For the manufacture of rivets, Soviet wood screws were used. 
Cutting thickness 2.2 mm. Sawing cleanly, satisfied with the result) 
And now a little about the operation of this device. First, the circular is turned on and off using the carrying switch (that is, when assembling, you need to turn on the grinder and DO NOT FORGET ABOUT THIS). Work on it should last no longer than 15-20 minutes, so that the grinder does not overheat. And the most important thing observe safety precautions!
Thanks for attention.
Sincerely, Egor
P.S. I would like to wish everyone a Happy New Year and wish you good luck, happiness, health and creative success! And may everything be fine in your life!)
A stationary circular saw is the machine that should be in the workshop of every craftsman working with wood. With its help, you can quickly and without special efforts sawing a board, cutting a blank of the required size, sawing firewood.
The home master is simply obliged to acquire such a machine. It is not necessary to buy homemade circular guaranteed to cope with the volume of work of a home workshop, while costing a much smaller amount.
being really useful tool, the circular has enough simple design. Its main nodes:
Optionally, the device can be supplemented with a pusher, which ensures the forward movement of the workpiece to the disk, and various lifting mechanisms that regulate the cutting depth.
The principle of operation of a circular saw (circular saw) is that the rotation of the motor shaft is transmitted to a cutting tool, a disk with sharply sharpened teeth. The center of the disk is located below the level of the tabletop, only its segment is removed from it. A workpiece is brought to the rotating disk, the teeth bite into the wood, creating even cut.
Angle grinder (grinder) - one of the most popular tools home master, with its help it is easy to cut metal, clean welds. In addition, using a wood disc instead of a regular abrasive disc, the angle grinder can be turned into a hand-held circular saw (it is also called a parquet), and by making a frame with a table - into a stationary circular saw.
For work you will need:
You also need to prepare a drill or screwdriver, a hammer, a screwdriver, pliers, a ruler and a pencil. With the help of these tools, you have to make a circular with your own hands.
Of course, we must not forget the grinder itself or a hand-held circular saw. At the first stage, it will help to cut the material, and then it will take its place as a working body of the circular.
The first step is to make the body of the circular. Thick plywood is perfect for this, you can use any pressed wood boards. You will need to cut out four rectangular sheets, size 40 x 80 cm. A box with a square of 80 x 80 cm at the base is assembled from them. Four bars are installed in the corners for ease of assembly and reliability of the structure.
From above, the resulting box is closed with a countertop. It can be made from the same plywood, but it is better to use some sheet material with laminated finish. This guarantees the durability of the machine, ensures the convenience of operating a home-made circular.
A cut is made in the tabletop to exit the disc, holes are drilled on the sides of it for attaching the tool.
The grinder must be securely fixed under the countertop. The design of the latch can be very diverse, it all depends on the configuration of the machine itself. The main requirement for fastening is that it must securely hold the angle grinder, preventing it from moving.
The simplest fastening may look like this: two metal squares, between them a grinder is fixed with a steel clamp.
In the upper shelves of the squares holding the grinder, two holes are drilled. The structure is fastened to the table top with countersunk bolts. It remains only to block the power button, connect the grinder through an external switch.
In the same way, you can make your own circular from circular saw. IN this case work is noticeably simplified due to the fact that you do not need to invent a mount. It is enough to make a cutout for the disk, drill holes through the holes in the hand saw plate.
The circular is distinguished by its extreme simplicity and availability of materials for its manufacture. Perhaps its only expensive part is the electric motor. Stationary machines are equipped with a powerful asynchronous motor, which provides cutting of thick wood of any species, but in the home workshop you can limit yourself to less power.
Note! For sawing boards of medium thickness, it is enough to make it yourself circular table driven by the engine of the washing machine.
This design has a number of advantages. The engine from an old washing machine is inexpensive, moreover, such a unit is likely to be found on the farm home craftsman. Connecting this engine is not particularly difficult, there is no need to look for circuits, soldering. With all this, the power of such a unit is quite enough for most types of work.
The scheme of the machine can be simplified as much as possible by eliminating the belt drive. In this embodiment, the cutting tool will be mounted directly on the motor shaft. The bed of the desktop mini-machine will be a frame assembled from a bar with a section of 40 x 40 mm. If desired, it can be welded from a corner or a profile pipe.
As a stand (tabletop) for a circular, a part of the body of an old TV, coated chipboard, is ideal. As practice shows, this part is sufficiently durable, and thanks to the lacquer coating, it does not prevent the workpiece from sliding.
In the tabletop with an electric jigsaw, two parallel cuts are made perpendicular to the cutout for the disk. A movable square will slide along them, playing the role of a side stop. It will help to make an even cut, if necessary, at a given angle.
Those who plan to seriously engage in woodworking should think about making a full-fledged stationary circular saw. It must be a separate unit mounted on a workbench equipped with powerful engine, with the ability to quickly replace the disk. It will take time to make such a circular with your own hands, but it will definitely pay for itself.
Despite the apparent simplicity of this device, it is worth creating a drawing of the machine before starting work. This will allow you to visually see the future unit, choose its optimal configuration.
The basis of any machine is a bed, a frame on which all the main parts are mounted. The frame of the circular must be stable and reliable, so it is made of metal. It is preferable to use profile pipe or thick-walled square. Welding is used to connect parts. If a collapsible design is conceived, a bolted connection is suitable.
Buy suitable material it will not be difficult, in any specialized metal rolling store you can pick up both pipes and a square. Those who want to save money can be recommended to contact scrap metal buyers. You can buy the same thing from them, only cheaper.
The best material for making a professional circular countertop is metal. Steel and aluminum-based alloys are excellent. For budget option can be limited to thick plywood upholstered sheet metal. In any case, the surface of the tabletop must be smooth, resistant to friction and not sag under a weight of up to 50 kg.
In the tabletop, a groove is made for the disk. It can be done in two ways. You can make a cut in a single sheet, or you can assemble a countertop from two halves. The second method is preferable for a metal countertop, which is difficult to cut at home.
If desired, you can make sawing machine for work outside the workshop, for this it is enough to provide for the possibility of installing gasoline engine small power, it can be removable.
The optimal circular drive is a V-belt drive. Two pulleys are used, one on the motor and one on the drive shaft. It's convenient and safe. There is no direct connection between the motor rotor and the disc, in the event of a jammed tool, the belt will begin to slip, signaling the need to turn off the power. In addition, using pulleys with several streams of different diameters, you can adjust the speed of the saw, choosing the optimal mode for different woods.
Rotation from the motor rotor is transmitted to the shaft. This is one of the most critical parts of the circular. It is unlikely that it will be possible to make a shaft on your own, it is better to buy a ready-made one or order it from a turner.
The shaft is mounted on bearings. They must be of a closed type: a circular saw is a sawing place and open ones will not last long.
Those who can boast of the ability to work with metal can be advised to make a circular with a pendulum engine mount. The main feature of the device is that the engine, shaft and cutting disc are installed in one common frame. On the one hand, it is hinged on the frame, the second is held by a screw with the ability to adjust the height. By changing the length of the screw, you can adjust the height of the disk exit from the tabletop.
This system allows you to adjust the height of the cut, as well as use discs of different diameters. If, instead of an adjusting screw, you use a probe brought to the countertop, you can get a simple copy machine. The probe will allow you to adjust the depth of the cut according to a certain pattern. This fairly simple refinement will turn a simple circular saw into a real woodworking machine. Such a device can not only cut the board into necessary blanks, but also to perform precise cuts, make various selections.
