Hello. Today I want to talk about how I made a cutting machine out of an angle grinder that I didn’t need. I often have to cut pipes. Especially profile ones. Whoever did this knows that it is quite difficult to cut off an exactly profile pipe with a grinder. It takes a lot of time - you have to use a square to draw each side at a right angle, then carefully cut through one edge. And anyway, it happens that one side turns out to be half a millimeter shorter, and then, when welding thin metal the walls in this place begin to burn due to a loose fit. Ideally, you can cut straight in just one cut. And for this you need a cutting machine.

I had an angle grinder that I didn't need "DWT ws-180s". They gave it to me for free due to a malfunction - the rotor impeller came off and the grinder jammed. The owner wanted to throw it away and offered to give it to me for spare parts for free. I repaired the rotor, replaced the brushes and bearings.

But it turned out that I did not need such a grinder. It is very heavy and massive for the 180th lap. There is enough power there for the 230th (2200 W), but, for some reason, the manufacturer equipped it with protection specifically for the 180th circle. Therefore, it hung unclaimed in my workshop for several years - I have a lighter "180". I was going to remake the protection for the 230th circle (then it will come in handy for concrete work, for example), but I never got around to it!)))). After all, I also have a 230 ...

And so the idea came to my mind to buy a frame for it and make a cutting stationary machine. But having considered the purchased options, I found that, for the most part, they do not have sufficient rigidity, and hence accuracy! Therefore, I came to the conclusion that I need to do it myself.

What I needed:
1. Actually angle grinder.
2. Steel corner 50 to 50 and 40 to 40.
3. Cut water pipe DU32-3.5
4. Cut water pipe DU-25
5. Bearing 6202 (2 pcs)
6. Support bearing.
7. Stud M14.
8. Profile pipes 15 to 15, 20 to 20, 25 to 25
9. Bolts and nuts M6, M8, M14.
10. Sheet scraps.

So, for starters, I decided to assemble the grinder mount. In purchased versions, designed for various angle grinders, fastening is carried out with three long bolts with lock nuts, which affects the rigidity. In addition, having fixed the angle grinder at three points, it has to be placed vertically, which “steals” the depth of cut a little - as a rule, the gearbox housing is slightly extended in front. And therefore, I decided to fix it horizontally, at two points, with a snug fit of the frame to the gearbox .. The disadvantage of such a mount is that it fits only one angle grinder model. But I decided to neglect this, considering that if I had to replace the grinder, then I would just weld a new mount.))))
I cut out two pieces of the 50 corner:

I drilled holes in them with a diameter of 14 mm:

And screwed to the gearbox, using the attachment points of the handle:

At the same time, I did not find M14 bolts, and I temporarily replaced them with trimmed studs with nuts. In order to twist and hold them, I had to cut slots for a screwdriver:

After that, right on the grinder, I grabbed the corners to each other by welding, then removed and boiled tightly:

Next, I started making the carriage. To do this, I needed a piece of thick-walled pipe 32-ki. Since it was necessary to cut off evenly, but there was no cutting machine, I used a wide masking tape as a markup:

After that, I cut out a piece of DU-25 pipe, 20 mm shorter than 32:

nested one inside the other:

Scored on both sides of the 202nd bearing:

And pulled it off with an M14 stud, using washers and nuts:

Then he cut out a piece of the corner and grabbed it to the pipe. At the same time, I burned the outer pipe with an electrode so as to weld it with the inner one:

Now we need to make racks for mounting the carriage. I made them from the same corner 50. To make them the same, I pulled them together with a clamp, and in this position I cut and drilled holes:

Next, I assembled and welded the entire mounting structure of the carriage:

I made the rods on which it will be attached to the angle grinder carriage from a thick-walled profile pipe 20 by 20. I calculated their optimal length empirically, laying out the scheme of the future machine from pipes and bars:

It remains to cut and weld everything together:

At this stage, I "tried on" the grinder:

Now it's the turn of the table. I made it from a sheet of steel, 4 mm thick, 60 by 60 cm in size:

I fixed the whole structure on this sheet:

From a profile pipe 15 by 15 I made two square frames, 50 by 50 cm in size. At the same time, in the pipe, at the bend points, I cut only three walls, leaving the fourth one.

After that welded in the corners vertical racks from the same pipe, and fixed my design on the resulting parallelepiped.

On this stage it became necessary to set a right angle between the cutting wheel and the table. As I said, I eliminated all adjustments in favor of the rigidity (read: precision) of the design. My plan was to simply bend the rods, and then strengthen them in the desired position by welding corners to them as reinforcement. But, when I tried to bend them first with two cutters ... (Whoo! What an optimist I am!)))). Then crowbar! (The result is the same) ..... I realized that I would not have to strengthen the structure !! Two thick-walled profile pipes of small length, moreover, welded at the ends to the corners with seams 5 cm long on each side, give incredible rigidity! ...

I was able to bend it only by inserting a two-meter (!) Pipe between them, with a section of 60 by 20. (Fortunately, between the rods is just 60 mm.

So, the vertical is exposed! Now cut through the table:

After that, I expanded and lengthened the slot with a small grinder. (In case of installation, for example, a circle on a tree.)

By the way ... Initially, I had the idea to make a "2 in 1". That is, to provide for the possibility of turning the table with the grinder down, in order to obtain a circular! And I even started to embody it. For example, the heads of all mounting bolts with reverse side I boiled, melted and cleaned to get a smooth circular table:

For the same reason, I made symmetrical holes for the mounting bolts with which the table is attached to the "parallelepiped" ... But the euphoria from the fact that "I came up with cool" passed, and I realized that I was just "led" and did not pursue practicality , but for "it turned out great".))))))

In fact, I WILL NOT USE THIS!!! Because I have a circular. And she, in any case, is better than made from a grinder! In addition, when working with a circular saw with a tree, it is good to put this machine next to a circle on wood in order to trim. Instead of flipping the table for every board...
In general, I discarded this stupid idea ....
..
Next, I proceeded to the construction of an emphasis for the workpiece. I attached a square to the circle, drew a line at a right angle, and fixed a 40 by 40 stop angle along it.

After that, I unscrewed the corner and, using its holes, applying a 45 degree square this time, I drilled a hole in the table.

I forgot to take a picture, but here, I think, it’s clear .... Now, in order to cut off at 45, you need to remove one bolt, turn the corner and fix it in another hole.

Next stage. I started assembling the tool vise. After all, you can accurately cut off only a well-fixed workpiece. I cut a piece of pipe 20 by 20.

I inserted a piece of M14 stud inside and tightened it with nuts. At the same time, I took one nut long, connecting:

Boiled her.

And he processed it with a grinder, giving it the outer dimensions of the pipe:

Then I made more, where it was not enough, and processed it again. (not photographed).
Then I cut out a piece of the 25th pipe (the 20th pipe fits into it easily and quite tightly) and welded a strip of strip across it so that it could be fixed to the table by drilling holes. This will be the guide:

At the edge of the hairpin, I made a selection and made a handwheel there.

Further, on the edge of the table I fixed a corner with a hole, and assembled a vice. I screwed the stud into the pipe with a welded nut, put a guide on it, and passed all this through the thrust corner, placing a support bearing, which is fixed with a cottered nut: In short, you will understand from the photo:

I made the handle of the handwheel from a furniture bolt, putting a metal tube on it.

At the end he made a wide emphasis. And here are the tool vices:

When the handwheel is turned, the pipe with the welded nut comes out of the guide and firmly presses the workpiece against the stop. The only inconvenience is that you need to rotate to the left.))). But more reliable than an eccentric clamp.

Next, I proceeded to the manufacture of a protective casing. As I said, the casing on the grinder was under the 180th circle, and I decided to use the 230th. (There is enough power. The speed is also suitable.). In addition, since I need accuracy, I will cut in thick circles (2.6, or 3 mm). Because the thinner ones dangle a little when pressed. And therefore the number of sparks will be incredible! Therefore, I decided to make the most closed casing, and fix it directly to the bed.

First I made a template out of cardboard.

Features of using the grinder

When performing construction and installation work used a large amount of different instrument. The most commonly used grinder. The main task for which it is used: metal cutting; processing of building materials.

If you also use nozzles with this tool, you can expand the number of options for its use. In particular, using this tool with nozzles, you can perform high-quality grinding workpiece bases. They will be cleaned of foreign inclusions. Nozzles for grinders can be purchased at the store. But if you do not have the desire to pay money, then you can make them yourself.

In some cases, this tool is used as a wall chaser. With his help grooves are created for laying pipes and electrical wires. To use the grinder in this capacity, you will have to perform some manipulations and increase the standard width of the protective cover. In addition, you will need to make a plate for support.

Such a tool can be used with one disk or several at once. If the grinder is used with two discs, then some changes must be made to the mount of this tool. After that, the grinder can be used in standard mode.

It often happens that during repair work and there is a need to clean the base of parts that are difficult to access. In such cases, the craftsmen most often resort to using a home-made fixture for the angle grinder in the form of a special nozzle, thanks to which a small disk can be taken out beyond the dimensions of the grinder.

In this case, the rotation will be transmitted using special belt drive from the main drive. Using this design, cutting of materials cannot be performed. However, scale can be removed from the surface of materials without problems. It often occurs on the surface of welds.

At the moment, the market offers a large number of nozzles for a tool such as a grinder. Their use allows expand application options this tool. If we talk about the most commonly used attachments for grinders, we can distinguish the following:

• a device for sanding the base and removing the paint layer from the surfaces of the materials;
• beds;
• protractors.

Materials and tools to make nozzles for grinders

When it becomes necessary to use a grinder for specific tasks, in this case, many craftsmen opt for ready-made nozzles. They can be easily purchased at a hardware store.

The cost of devices is not very high, so everyone can afford them. With the search for these nozzles, there are no difficulties either. However, despite all this, many people still decide to make nozzles for the grinder with their own hands.

If you decide to make nozzles for this tool yourself, then before starting work, you need to prepare the following tools:

1. An electric drill, it is advisable to buy a set of drills in addition to it;
2. It is desirable to choose discs with a diameter of 125 mm.
3. Wooden bars.
4. Metal corner.
5. Plate of duralumin steel.
6. Self-tapping screws.

Work technology

Before starting work, it is necessary to cut a plate from the metal. After that, you need to make a corner out of it. In order to accomplish what you set out to do, you must first triangle cut in the workpiece shelf. And when this is done, the workpiece must be bent at a right angle.

Further, in the design of the plate it follows drill six holes. The diameter of each of them should be 4 mm. Subsequently, it is in these holes that self-tapping screws will be installed. With their help, it will be possible to fix the handle, corners and timber. All holes must have special recesses for the screw heads.

To securely fasten the beam handle, a few self-tapping screws are enough. Fasteners used during this work should have dimensions of 3x35 mm. This will give you the detail L-shaped.

After that, all the elements are combined into a single structure together with the plate. The created fixture for the tool must be fixed with 3x20 mm self-tapping screws.

So, the basis of the future design is made. Next, you will need to do installation of metal corners. You should have several of these items available. They must have the following dimensions:

Please note that the first corner must be extended to 60 degrees. If this is not done, then it will not work to achieve its main goal - to fix the manufactured structure on the grinder. When the installation of the metal corners is completed, the tool itself is fixed directly on them.

To connect the tool and structural elements, a separate handle is used on one side, and bolts with nuts. on the other side. The latter are necessary so that during the work there is no unscrewing of the screw of the structure.

If desired, you can refuse to mount the nut on the handle, since it will be held by the hand of the master during operation. At this point, the work on creating a structure for cutting can be considered completed.

How to make a frame for a grinder

Often grinders are used together with a bed. They are used mainly to ensure that the master performs certain work on cutting materials and workpieces with less physical effort.

It is obvious to everyone that it is extremely difficult to hold a tool that has a lot of weight for several hours. Therefore, to facilitate their work during the operation, many masters manufacture special equipment. which are called beds. When the grinder is equipped with such a device, then cutting work can be done using only one hand.

To make a bed, you first need do wooden box . You can get by with only one side on which the tool will be fixed. All other walls can be removed, and legs of a special design can be attached instead.

But in order to achieve the effectiveness of using a grinder with such a device, it is necessary to make some changes to its design.

First of all, you need to do dismantling the casing of the angle grinder. After that, the disc must be put on the tool. When this action is completed, it must be pressed against the side wall of the device.

It is necessary to put a mark where the gap was made for the stroke of the nozzle or disk. Its width should not be too large, otherwise foreign objects may get inside the structure during work.

If desired, the gap can be increased. The need for this arises in cases where it is necessary to replace nozzles without completely disassembling the entire structure. Samples of wooden blocks can be used as support elements. After that, you can begin to work on sawing blanks.

Protractor for grinder

When conducting construction and installation work, an important device for an angle grinder is a protractor. It is especially indispensable when working on processing or cutting metal profiles.

By using these devices, you can easily calculate cutting angles blanks. And this has a positive effect on the speed and quality of work performed. In addition, such a device is suitable for cutting metal profiles.

• The design of this type is widely in demand in the processing of wall and floor tiles.
• They are also used in cutting and processing floor coverings and skirting boards.

Having made a protractor for an angle grinder with your own hands, you will no longer need to purchase special tools, which are often expensive and have large dimensions. A homemade protractor is not suitable for industrial use, but for home use it will be an excellent replacement for store fixtures.

The principle of operation of the design of a homemade protractor

The first thing to do - install guide rail. equipped with a special overlay, on a tile. A similar overlay is used in order to prevent slipping of the workpiece to be fixed. Therefore, thanks to it, the displacement of the element will be excluded.

Then you need to firmly press the workpiece to the shelves of the corner. After that, the user must set the desired cutting angle.

Next, you can proceed to cutting the material. When performing this action, it must be taken into account that when cutting, it is necessary to press lightly on the disc. Serious physical effort is not required.

A homemade protractor for a grinder has a design consisting of the following elements:

1. Corner.
2. Loops.
3. Bolt used for fixing.

Note that it is quite difficult to make such elements with your own hands. Therefore, if you are unsure that you will cope with such a task, then it is better buy in the store ready models of protractors.

The grinder is a fairly popular tool for builders and repair specialists. It can cut various materials and process workpieces and parts. However, sometimes specific operations are required. Therefore, experts acquire special nozzles for the grinder. You can easily find them in stores.

The use of such devices allows you to expand the number of options for using this tool. However, it is not always necessary to buy them in construction stores. If you wish, you can make them yourself. To do this, you just need to have free time and know how to properly make nozzles for grinders.

Do-it-yourself tools for a grinder

In order not to hold a heavy tool in your hands, you can make a simple device that will help you when working with a grinder. Its simplest version consists of two different-sized plates screwed together.

One of them is made of a steel, duralumin or textolite piece 30 * 12 (15) cm. In the third case, 5-6 mm material is taken. The second plate is made of steel 120*50 mm. It bends in the middle at an angle of 60 o. You can take a corner of the appropriate size and bend it.

In a small plate (corner), 4 simple holes are drilled for its installation on the main surface and one with an M8 thread to secure the grinder. The working tool is fixed with an M8 bolt with a lock nut, which is needed so that the bolt does not turn out due to vibration.

For greater convenience of working with this device, additional nodes have been developed. Their main function is precise cutting (along the line).

The first node consists of the same plates, to which are added:

• square 30*30*420 mm;
• corner 55*30*80 mm;
• two bars of wood 27*30*35 mm and 120*60*25 mm.

The bars are screwed together with screws in the form of the letter "G". A triangle is cut out in a square at a distance of 12 cm from the end, and it is also bent "L-shaped". The connected bars are placed on a square, and the whole structure is screwed with screws (caps from below) to the main plate.

A corner is installed on one side of a long bar for more reliable fixing of the handle of the grinder.

Serves as a limiter and guide during operation regular board. The master rests a fixture on it, so that when moving, a perfect line is obtained.

The second node consists of the same two main plates. A square is screwed to the main bottom with their own hands, which plays the role of a cutting limiter. In the main substrate, it is desirable to make several rows of holes for different widths of the part to be cut.

How to make homemade tools for grinders?

Bulgarian is indispensable tool when performing construction, installation and other works. The main task of this design is to cut metal or stones at high speed. If you use special nozzles, you can carefully sand the base of the workpiece, clean it and remove various contaminants. However, in order to be able to use this tool in other areas, you will need to buy or make home-made devices for the grinder.

Diagram of the grinder device.

In some cases, the grinder is used as a wall chaser. To do this, you will need to increase the width of the protective casing, and then make a plate for the support. Such a tool can be used both in a set with one disk, and with several. In the latter case, it will be necessary to improve the attachment point. If necessary, the upgraded cover with the supporting element can be easily removed, and then use the angle grinder in normal mode.

It happens that you need to clean up hard-to-reach grounds. Masters for such purposes use a special nozzle that is able to take out the disc without large diameter for the dimensions of the grinder. The rotation in this case will be transmitted from the main drive using a special belt drive (rubber belts are used). Cutting using a similar design will not work, but you can easily remove scale from the weld seam.

Today, there are a fairly large number of different nozzles with which you can expand the scope of this tool. Among them, the main ones are the following:

• devices for sanding the bases and removing the old layer of paint;
• beds;
• protractors.

What do you need to make homemade tools for grinders?

Bulgarian assembly diagram.

Most owners prefer to purchase ready-made nozzles in building supermarkets. Such elements are not too expensive, and there should not be any problems with the search for devices. However, some people prefer to make similar parts for the grinder with their own hands.

In order to make devices of this type, it will be necessary to purchase items such as:

• electric drill with a small number of different drills;
• screwdriver;
• hacksaw for working with wood;
• discs for grinders, the diameter of which is 125 mm;
• wooden bars;
• metal corner;
• duralumin steel plate;
• self-tapping screws.

First of all, you need to cut a plate of metal. Next, make a corner out of it. To do this, you need to make a triangle-shaped cutout in the workpiece shelf and bend it at a right angle. In the design of a metal plate, you will need to drill 6 holes with a diameter of 4 mm. Self-tapping screws will be installed in these holes, which can fix the handle, corners and a wooden beam. All holes must have special recesses for the screw heads.

The device of a single-phase asynchronous motor.

The handle is attached to the bar with several screws. The dimensions of the elements for fasteners should be 3x35 mm. As a result, it will be possible to obtain a part in the shape of the letter G. All elements, together with the plate, are assembled into a single structure. Attachments for the grinder must be fixed with several 3x20 mm self-tapping screws.

At this stage, the basis of the structure is made. Next, you need to install metal corners. There should be several similar elements, with dimensions of 75x30x55 and 45x60x60 mm. It should be noted that the first corner must be straightened from 90 ° to 60 °. If this is not done, then it will not work to fix the manufactured structure on the grinder. After the metal corners are installed, the tool itself will need to be fixed on them. It is connected to the structure with a separate handle on one side, and on the other with a bolt and nut. The latter will be needed so that the screw does not unscrew from the structure in the process of cutting the material. You can not mount the nut on the handle, as it will be held by hand. At this stage, the design for cutting is made.

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How to make a frame for a grinder with your own hands?

Schematic diagram of the grinder speed controller.

Such devices for angle grinders are used in order to be able to facilitate the efforts made by the user to work on cutting workpieces. It should be understood that holding a tool with a large weight in your hands for several hours is quite difficult. Therefore, most craftsmen want to make a special fixture for a grinder, which is called a bed. With the help of such structures, it is possible to carry out work on cutting metal blanks with one hand.

First of all, you need to make a box of wood. You can make only one side, so that it is possible to fix the grinder. All other walls must be removed, and special legs should be attached in their place.

However, for such a tool to be effective, the first step is to adapt it to existing conditions. To do this, you will need to dismantle the casing of the angle grinder for protection. Next, put a disc on the tool. When it is pressed against the side wall of the fixture, you need to make a mark where the gap was made for the stroke of the nozzle or disk. It should not be too wide, otherwise foreign elements may get inside the structure. However, it is worth knowing that the gap can be expanded. This should be done in cases where there is a need to replace nozzles without completely disassembling the entire structure. Several wooden bars can be used as supporting elements. After that, you can start sawing various workpieces.

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How to make a protractor for a grinder with your own hands?

The protractor is the most important tool in construction and installation work. Similar elements for angle grinders are indispensable in the process of processing and cutting metal profiles. The use of such a design allows you to accurately calculate the cutting angles of workpieces, which positively affects the quality of the work performed. Such a device can be used not only for cutting metal profiles. The design is widely demanded in the processing of wall and floor tiles, flooring and skirting boards.

A do-it-yourself protractor is an excellent replacement for large and expensive tools that are specialized.

The position of the handle at the grinder.

In industrial conditions, there will be no benefit from do-it-yourself equipment, but at home this element cannot be replaced.

The design has the following principle of operation:

1. First of all, the tile (or any other material being cut) is installed on a guide corner with a special overlay. A similar overlay is used to ensure that the workpiece to be fixed does not slip. Therefore, in this case, the possibility of shifting the element is excluded.
2. After that, the workpiece will need to be pressed tightly against the shelves of the corner. Then the user must set the desired cutting angle.
3. The next step is to start cutting the material. In this case, it should be borne in mind that for cutting you only need to lightly press on the disc - no great effort is needed.

The design of such a homemade product consists of the following elements:

It is worth noting that it is quite difficult to make such elements with your own hands, therefore it is easiest to purchase ready-made models of protractors in construction supermarkets.

Using various additional nozzles for grinders in the process, you will need to remember about safety measures. This is more true for homemade devices.

By using various nozzles that can be made by hand, you can use the grinder to perform a large number of technological processes.

Making various devices for the grinder on your own is not as difficult as it might seem at first glance. All you need to do is buy necessary tools and materials, as well as phased technology manufacturing.

How to make homemade devices for angle grinders?

The Bulgarian is an irreplaceable tool when performing various construction, installation and repair works. the main task of this machine is to quickly cut metal or stones. Also, thanks to special nozzles, it is able to carefully grind the surface of the part, clean it and eliminate deep and ingrained dirt (often it is rust). However, in order to expand the scope this device, many acquire and even design home-made devices for the grinder themselves. And today we will consider what devices and nozzles are most in demand in construction, and how to make them yourself.

At the moment, there are many different nozzles that can significantly expand the scope of use of a simple angle grinder. These, for example, are:

1. Nozzles for sanding surfaces and removing old paint.
2. Beds.
3. Protractors (we will talk about them at the end of the article).

It is worth noting that most owners still prefer to buy ready-made nozzles in the store than to make them with their own hands. They are not that expensive, and it is not difficult to find them at all. But some craftsmen make these devices with their own hands. Read more about this below.

How to make homemade tools for grinders? Cooking Tools

To perform this work, you will need the following devices:

• electric drill with a set of drills;
• screwdriver;
• wood saw;
• discs for grinders with a diameter of 125 millimeters.

What should be prepared from the materials?

You need to purchase wooden blocks (2 pcs.), A metal corner made of duralumin steel and the same plate. You will also need self-tapping screws measuring 3 ... 3.5x169hellip; 35 millimeters. In total, you need to have 8 such elements.

Getting Started

First, a metal plate is cut. Further, an angle is made from the duralumin corner. This is not difficult - you just need to make a cutout in the form of a triangle in one of the shelves of the part and bend it at a right angle. In the metal structure of the plate, it is necessary to drill 6 holes with diameters of 4 mm each. This is necessary to secure the handle, corners and wooden block with screws. It is worth noting that each of these holes should have a special recess for the head of the screws.

The handle is fastened to the bar with two self-tapping screws. The dimensions of the fasteners should be 3x35 millimeters. Thus, you will get an L-shaped part. All these elements together with the plate are further assembled together. At the same time, fixtures for angle grinders are fixed with 4 self-tapping screws 3x20 millimeters.

So, the basis of the element is already ready for us. Now you need to install steel corners here. There should be two of them - with dimensions of 60 × 609times; 45 and 55 × 309times; 75 millimeters. It is worth noting that the first corner must be unbent from 90 0 to 60 0. If this is not done, such a product will definitely not be fixed on the grinder. What to do next? After installing the steel corners, the grinder itself is attached to them. It is connected to the device using its own handle on one side, and on the other - with the help of a bolt and locknut of the M9raquo series; (8×20 millimeters). The latter is needed so that the screw does not unscrew from the device while cutting the material. It is not necessary to install the locknut on the handle, as you will be holding it by hand. Everything, at this stage, the cutting device has been successfully manufactured.

Such devices for grinders are used to facilitate the efforts made by the operator to perform work on cutting the material. Agree, it is quite difficult to keep a bulky angle grinder on weight for several hours in a row. For this reason, many craftsmen make special beds that allow you to work on cutting metal and products with almost one hand.

How to make such a device for a grinder with your own hands? First you need to make a wooden box. It is enough to make only one side for fixing the grinder. All other walls are removed, legs are attached in their place.

But in order for such an angle grinder to really be effective, you must first adapt it to the new “habitat conditions”. What do I need to do? First you need to remove the protective cover of the tool. Next, a disc is put on the grinder. When he leans against the side wall of the tool, you should mark where the slot was made for the nozzle or disc to move. It should not be too wide (distance - so that foreign objects do not get inside the device). However, the gap can be widened. This is done in cases where there is a need for a quick replacement of nozzles without disassembling the entire structure. Two supports can be used. wooden bars. Everything, now you can safely start working on cutting various materials and products.

About protractor

The protractor is the most important tool in the construction and installation work. These attachments for angle grinders are indispensable for processing and cutting light metal profiles. The use of such a tool allows you to calculate the cutting angle of the part with high accuracy, which is best reflected in the quality of the work performed. In addition to metal profiles, this tool is also widely used in processing tiles, floor covering and plinths. A homemade protractor is a great alternative to bulky and expensive tools, which are also called specialized. Perhaps on an industrial scale, the benefits of homemade equipment will not, however household such an element will definitely be indispensable.

The principle of its operation is as follows:

1. First, the tile (or other material to be cut) is placed on a guide corner with an anti-friction pad. The latter has high anti-slip properties, which prevents the part from moving on the device.
2. Next, the workpiece is tightly pressed against the shelves of the corner, after which the operator sets desired angle cut.
3. Then the cutting of the material begins. Here it is worth considering that for cutting it is enough just to press the disk a little - extra efforts in this case are useless.

Design

Structurally, these devices for angle grinders consist of the following parts:

• latch corner;
• loops;
• fixing bolt;
• main parts.

Unfortunately, it is impossible to make such attachments for a grinder with your own hands, which is explained by their complex design. Therefore, it is best to buy such goniometers in specialized stores.

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What accessories for the grinder can be made with your own hands

The well-known angle grinder, with its cutting, grinding and cleaning capabilities, has proved capable of several more functions. Expanding the functionality requires doing some work with your own hands in order to get the tools you need for the job.

Rack for grinder + (Video)

This attachment is a small machine that can be used to cut easily, safely and very accurately. metal pipes, profiles or rods. It consists of a base or a small table attached to the ground or to a locksmith's table.

The machine is assembled in a simple sequence:

• install a hinge on the base;
• we weld the carrier pipe to the hinge;
• we attach to the pipe P - a figurative plate for fastening the grinder;
• we put a rubber handle on the carrier pipe;
• install the disk and check its position.

As a result of simple work, we got a machine or stand for a grinder. Now the angle grinder can rise and fall on the hinge on the part installed for cutting. In order for the grinder to rise without loads, we install a spring on the pipe.

Two fixing corners must be installed on the table. At the base of one corner, we make a groove for the bolt around the circumference. It will be needed when a pipe or profile needs to be cut at a certain angle. Then we install this corner with a slot at the same angle to the plane of the cutting disc of the grinder.

Parallel to the corner with an arc slot, we install a corner that can be moved to the part to fix it on the table. The pipe or profile will simply be nested between two corners. This is enough to perform a fast and accurate cut.

By installing a supporting transverse metal bar on the machine table, you can clean the material with a steel brush mounted on the grinder shaft.

Simple cutting machine + (Video)

A cutting machine based on an angle grinder can be made by hand in one day. For the machine, it is necessary to choose a frame - a metal base plate. Attach a hinge to it. Weld a supporting frame with a plate for attaching the grinder to the hinge.

Any suitable part can be used as a hinge. In this case, the hinge is made of swivel hinges passenger car. The hinges have already served their time, but they approached the machine very well.

Do-it-yourself wall chaser from a grinder + (Video)

A strobe is a groove that must be cut in the wall for laying electric wire or cable. The complexity of this work lies in the fact that the groove must be of constant width and depth. Then the wire will be laid evenly and less mortar will be required for laying.

A wall chaser is rarely used in practice, so it will be expensive to buy it for a home. But it can be made on the basis of an angle grinder - our favorite grinder.

The main task is to install two diamond disc on the grinder shaft with a distance of at least 1 cm:

• install the first disk and fix it with a nut;
• install the second disk and fix it with a nut;
• measure the resulting distance between the disks;
• install protection on the grinder;
• checking the work.

But, if for some reason it is not possible to install two disks on the shaft, the strobe can also be cut using the usual method with one installed disk. You just have to cut the second parallel line.

Work with a wall chaser is carried out indoors. This creates a huge amount of dust. Not even a respirator can save her. To eliminate this negative phenomenon, it is necessary to make a protective casing that would cover both disks and have a pipe on top for connecting to a vacuum cleaner. Similar device is on electric jigsaws for collecting small sawdust.
Sometimes to this casing lovers rational use tools fit 2 or 4 rotating rollers. When the wall chaser moves along the wall surface, it will move on rollers, without creating additional loads on the hands.

To manufacture a tool for a wide groove, it is necessary to make special bushings for mounting discs to the desired width. With such a wall chaser, it will be possible to make grooves for laying pipes.

But the protective cover will also need to be made wider. On the casing of the wall chaser for both wires and pipes, it is necessary to install a screw for adjusting the immersion of the cutting tool into the wall. In this case, the casing will consist of two parts connected by a hinge and an immersion adjustment unit.

Milling cutter from grinder + (Video)

Sometimes it becomes necessary to mill a hole or a surface, but there is no familiar milling machine, and there is nowhere to look. But there is an angle grinder - a grinder. This is the solution to the problem. We choose a machine from two options - a movable machine and a movable table.

In the first case, we fix the workpiece or material to be milled, and the grinder is attached in a vertical plane to the frame. On the frame it is possible to shift the plate to which the angle grinder is attached to the left - right and forward - back. In other words, we can move the grinder relative to the workpiece.

In another version, the grinder is fixed rigidly, and the workpiece moves by analogy to the left - to the right and forward - back. These are the main directions for milling. For milling along the up and down axes, it will not be difficult to supplement the adaptor.

Having chosen the option of the machine, you can begin to implement. The only place that will require the involvement of a turner is the cutter holder. It is machined from a hexagon of at least 16 mm, because the grinder thread is 14 mm. Collet type holder. It is easy to manufacture and does not have large beats. A conventional cam chuck does worse.

The advantage of such a machine, as well as all machines based on the grinder, is that they are easily transformed back into the grinder. As a kind of milling cutter from a grinder, you can make a drill.

Pendulum Saw + (Video)

It is not difficult to make tools for a grinder with your own hands. It doesn't even need blueprints. It is enough to know the principle that is embedded in a particular machine. A pendulum saw based on a grinder is no exception. This is the same cutting machine, but its weight is distributed almost in half.

It is somewhat similar to a children's swing. A frame is located on the movable sleeve, and an angle grinder is installed on it. Any load in combination with a return spring can serve as a counterweight.

TOP 6 drawings will help you make a cutting machine from a grinder with your own hands without errors and extra costs. Answers to FAQ, recommendations.

TEST:

Is it possible to make homemade trimming machine from angle grinder: a screening test with answers based on the submitted materials

1. What are the emergency stop switches?

a) manual;

b) hand and foot.

1. What angle grinders are suitable for creating a cutting machine?

a) pneumatic and electric;

b) rechargeable.

1. The minimum power of the electric motor of the grinder for the cutting machine from the grinder:

1. What machines can be made on the basis of angle grinders?

a) trimming, cutting;

b) grinding, milling, grinding.

1. Where can I place a grinder in a cutting machine?

a) above the tabletop;

b) under the tabletop.

1. The correct option is b). Foot switches are more convenient as they actuate quickly.
2. Theoretically, there will be enough power in all three options. In practice, apply a) - electric and pneumatic models. Battery for stationary machine not needed. For a pneumatic drive, you will have to purchase a compressor of the appropriate capacity.
3. 900W or more. Correction is done if it is supposed to process blanks from relatively soft materials, or at high speed.
4. Both options are correct. A powerful grinder is suitable for creating various household and semi-professional machines.
5. There are two mounting options available. Experts prefer the top.

Bulgarian with electric drive perform many different work tasks. To reduce labor costs with a simultaneous increase in accuracy, it is used as the basis for the machine.

"Bulgarian"- the common name for an angle grinder (angle grinder). By changing the disk, this versatile machine is converted for cutting, performing other work operations.

Bulgarian

How to make a cutting machine step by step with drawings: 4 arguments in favor of the project

To be sure of the correctness decision study the following facts:

1. without secure fastening, the workpieces vibrate, increasing the risk of damage to the disk;
2. a heavy tool is difficult to manipulate with high accuracy while maintaining perpendicularity incision;
3. difficulties increase when processing thick products, when creating a large batch of parts of the same type;
4. When both hands are occupied, the likelihood of injury increases significantly.

A high-quality machine is necessary to solve the marked tasks, improve productivity. It is created as follows algorithm:

• specify the purpose, scope of work;
• study the drawings of factory analogues and homemade products, choose the appropriate option;
• compose a set of design documentation with a list of necessary purchases;
• perform assembly according to the approved plan with a performance check.

TOP 6 drawings with explanations for the manufacture of a homemade metal edger

Model circular saw it is not difficult to create if you fix the grinder under the desktop with a slot. It is necessary to think over a system of guides for high accuracy in moving workpieces.

Look at the picture number 1, what a typical one looks like edger. Here, the angle grinder is fixed on a movable hinge, which somewhat complicates the design. This scheme has several advantages:

• simple and reliable fastening of the workpiece;
• significant weight of the upper part will help to use less effort when cutting blanks;
• if necessary, a hand-held electric tool is dismantled to perform work operations in the normal mode.

Such a power frame is assembled from standard steel corners, pipes with a square section. Welded joints are stronger. But it is also acceptable to create a prefabricated structure using screws and nuts.

Such a project can be used as an example for the manufacture of a high-quality metal edger. Wheels make it easy to move severe products.

For your information! In other racks, you need to install screw supports. With their help, compensate for uneven flooring.

Look at the picture for an example of a machine for processing wood. This technique is suitable for cutting large workpieces. It is necessary to choose a grinder of sufficient power so that it is enough to work with large diameter discs. On the reverse arm of the lever (instead of an electric motor, as in the drawing), a load is fixed. The weight and place of attachment are selected in accordance with personal requirements and features of a particular design.

This machine can be converted to be fixed at the bottom angle grinder If longitudinal sawing of wood is supposed, such an engineering solution will be optimal.

Look at Picture No. 6. It can be used to make a set of drawings with my own hands. It is recommended to pay attention to spring, which raises the work node to its original state. Rotary table with measuring fixtures will help to create a machine with increased tolerance requirements.

In the manufacture of this part of the machine, a thick metal. This solution increases the cost and weight, but prolongs the service life, increases reliability, improves the fastening of hinged elements and machining accuracy.

Converting a grinder into a machine step by step: 10 assembly steps, an electrical diagram for the drawings

To create a machine yourself, you must select design, appropriate to existing skills and capabilities. The easiest way is to assemble the machine from blanks created according to the drawings in a specialized metalworking workshop. Otherwise, you will have to master welding technologies and purchase the necessary equipment.

Below is the step by step algorithm self assembly with helpful comments:

1. After approval of the project parameters, they acquire necessary materials, blanks, tools and interchangeable nozzles. The shopping list is determined on the basis of the prepared set of design documentation. Compliance with current standards in this case is not required. However, all important data must be specified, as in the examples above.
2. Cut blanks for power frame. The table is made of sheet steel with a thickness of at least 5 mm.
3. A transverse shaft is attached to the pendulum lever by welding. When creating this node, the perpendicularity of the parts is carefully controlled.
4. For fastening angle grinder suitable capture in the form of the letter "P". In its side parts make a hole for the bolts. With these fasteners, the hand tool is rigidly attached to the frame. Choose a sufficiently strong part of the body of the grinder.
5. Additional fixation is provided with a metal clamp. All of these mounts are made rigid to improve accuracy.
6. Swivel bearings are pressed in. Instead of standard factory-made units, thick-walled steel pipes of suitable inner diameter are used.
7. The assemblies are fixed on the axis of both sides.
8. The pendulum is attached to the platform by welding. In order not to damage the bearings, it is recommended to limit the temperature increase. For cooling, use a cloth soaked in water.
9. Weld a block with a mount for a grinder. Installed in place angle grinder, protective devices, return spring.
10. They clarify the build quality, the reliability of the fasteners, the functionality of the pendulum. Connect the machine, check the performance first on Idling and further - in working mode. The groove in the table is cut with a disc of the appropriate width.

Look at Picture No. 8. Here is the wiring diagram for the drawings, which improves the protection of the equipment from overheating. It will also come in handy for a quick emergency shutdowns. One or more buttons to break the corresponding circuit are set to convenient location machine body. Foot operated switches are also used.

Strengthening the machine and other means of protecting the operator

Reliable power frame is the basis of security. Additionally close moving parts, prevent access outsiders V working area. In the process of processing parts, goggles, masks, gloves, and other personal protective equipment are used.

In addition to reliable strengthening of the machine for protection the operator is a certain location of the grinder. For safety and to prevent damage to clothing, it is installed so that a sheaf of sparks during operation is directed in the opposite direction from the person.

All 5 options for home-made machines from a grinder for various purposes

The drive of tools of this category differs in high power. A high-quality grinder is small in size, durable, resistant to high workloads. Some models are adjustable. Modern angle grinder in the basic configuration are equipped with protection against overheating. Such a product is good foundation for the manufacture of home-made machines for various functional purposes.

Bulgarian lathe

This is where the standard design comes into play. The only great node- a device for transferring forces to the spindle. The gearbox is needed to regulate the speed and torque in the appropriate range.

Homemade do-it-yourself milling machine for wood, other types of equipment

For your information! This device can be attached to the motor shaft after dismantling the standard gearbox.

Look at Picture #12 showing how you can assemble a full-fledged sawing / circular machine from improvised means in 15-20 minutes. With its help, it is easier to ensure accurate processing of wooden blanks compared to using hand tools.

3 other machines: grinder, chain sharpener and brick cutter

Here, potentially hazardous areas are protected from damage by sparks using foil strips. Temporary, but inexpensive and fast solution practical task.

VERY DANGEROUS! In any case, we must not forget about the intended purpose of the equipment. If you do homemade machine for cutting metal, you should consider strengthening the structure. The processing of plastic and wooden blanks is performed with less stress.

It’s also important to know: 4 nuances for choosing the right angle grinder suitable for a sawing or circulating machine

angle grinder produced with drive power from 340 W to 2.5 kW. To increase the torque on the working shaft, gearboxes and an increase in speed up to 10-12 thousand per minute are used. Select a model suitable for a particular type of machine. To eliminate rapid wear, experts suggest making a small margin and using equipment with an engine of 0.9 kW or more.

The number of handles and special devices for performing manual operations in this case do not matter. However, the following Components And characteristics:

• protection of the motor from dust;
• smooth speed control with automatic maintenance of the set level;
• smooth start;
• built-in overload protection.

Do-it-yourself cutting machine for metal and wood from a grinder

We make a metal cutting machine using high-quality equipment: TOP 3 manufacturers of angle grinders

This list contains brands whose equipment has received high marks from ordinary users and professionals:

• Bosch. It is famous for its reliability, good thoughtfulness of small design elements. A significant limitation is the high cost, even in the basic configuration.
• Hitachi initially they were expensive. But nowadays, part of the production has been moved to China, which has reduced costs. In some models, there is no automatic stabilization of revolutions under load.
• Makita— Reasonable combination of price and quality. All new high power models are equipped with effective overload protection, which extends the real life.

How to avoid 4 errors during operation, grinding / surface grinding and other machines

To machine long time fulfilled his functions the following simple rules must be observed:

• Do not increase loads more than planned values.
• Use the correct replacement tips as provided in the manufacturer's official instructions.
• Remove dirt in a timely manner so as not to impair the air cooling mechanism.
• Maintain the ideal state of electrical insulation, the functionality of protective devices.

How to make a very accurate machine with increased tolerance requirements and other answers to 5 frequently asked questions

1. How to make a machine with increased tolerance requirements?

Dampers to reduce noise and reduce vibrations are not used in angle grinder attachment points, so as not to degrade accuracy. All moving parts are designed to maintain geometry over a long service life.

1. What material is the platform made of?

Processing wood is easier than metal, so the table and many other parts can be made from this material.

1. Is it necessary to use an angle grinder of 1.5 kW or more?

Increasing power consumption is not always justified. An exact calculation is made taking into account the required number of revolutions / torque.

1. What parts can be damaged by increasing the frequency of the working shaft?

Too high a processing speed can damage polymer and other workpieces.

1. Do I need to wear safety goggles when processing workpieces with a machine?

For safe work, it is imperative to use personal protective equipment even when directing the flow of sparks “away from you”.

Bulgarian is an indispensable tool for construction, installation and other work. The main task of this design is to cut metal or stones at high speed. If you use special nozzles, you can carefully sand the base of the workpiece, clean it and remove various contaminants. However, in order to be able to use this tool in other areas, you will need to buy or make home-made devices for the grinder.

In some cases, the grinder is used as a wall chaser. To do this, you will need to increase the width of the protective casing, and then make a plate for the support. Such a tool can be used both in a set with one disk, and with several. In the latter case, it will be necessary to improve the attachment point. If necessary, the upgraded cover with the supporting element can be easily removed, and then use the angle grinder in normal mode.

It happens that you need to clean up hard-to-reach grounds. Masters for such purposes use a special nozzle, which is able to take out a disk of small diameter beyond the dimensions of the grinder. The rotation in this case will be transmitted from the main drive using a special belt drive (rubber belts are used). Cutting using a similar design will not work, but you can easily remove scale from the weld seam.

Today, there are a fairly large number of different nozzles with which you can expand the scope of this tool. Among them, the main ones are the following:

• devices for sanding the bases and removing the old layer of paint;
• beds;
• protractors.

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What do you need to make homemade tools for grinders?

Most owners prefer to purchase ready-made nozzles in building supermarkets. Such elements are not too expensive, and there should not be any problems with the search for devices. However, some people prefer to make similar parts for the grinder with their own hands.

In order to make devices of this type, it will be necessary to purchase items such as:

• electric drill with a small number of different drills;
• screwdriver;
• hacksaw for working with wood;
• discs for grinders, the diameter of which is 125 mm;
• wooden bars;
• metal corner;
• duralumin steel plate;
• self-tapping screws.

First of all, you need to cut a plate of metal. Next, make a corner out of it. To do this, you need to make a triangle-shaped cutout in the workpiece shelf and bend it at a right angle. In the design of a metal plate, you will need to drill 6 holes with a diameter of 4 mm. Self-tapping screws will be installed in these holes, which can fix the handle, corners and a wooden beam. All holes must have special recesses for the screw heads.

The handle is attached to the bar with several screws. The dimensions of the elements for fasteners should be 3x35 mm. As a result, it will be possible to obtain a part in the shape of the letter G. All elements, together with the plate, are assembled into a single structure. Attachments for the grinder must be fixed with several 3x20 mm self-tapping screws.

At this stage, the basis of the structure is made. Next, you need to install metal corners. There should be several similar elements, with dimensions of 75x30x55 and 45x60x60 mm. It should be noted that the first corner must be straightened from 90 ° to 60 °. If this is not done, then it will not work to fix the manufactured structure on the grinder. After the metal corners are installed, the tool itself will need to be fixed on them. It is connected to the structure with a separate handle on one side, and on the other with a bolt and nut. The latter will be needed so that the screw does not unscrew from the structure in the process of cutting the material. You can not mount the nut on the handle, as it will be held by hand. At this stage, the design for cutting is made.

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How to make a frame for a grinder with your own hands?

Such devices for angle grinders are used in order to be able to facilitate the efforts made by the user to work on cutting workpieces. It should be understood that holding a tool with a large weight in your hands for several hours is quite difficult. Therefore, most craftsmen want to make a special fixture for a grinder, which is called a bed. With the help of such structures, it is possible to carry out work on cutting metal blanks with one hand.

First of all, you need to make a box of wood. You can make only one side, so that it is possible to fix the grinder. All other walls must be removed, and special legs should be attached in their place.

However, for such a tool to be effective, the first step is to adapt it to existing conditions. To do this, you will need to dismantle the casing of the angle grinder for protection. Next, put a disc on the tool. When it is pressed against the side wall of the fixture, you need to make a mark where the gap was made for the stroke of the nozzle or disk. It should not be too wide, otherwise foreign elements may get inside the structure. However, it is worth knowing that the gap can be expanded. This should be done in cases where there is a need to replace nozzles without completely disassembling the entire structure. Several wooden bars can be used as supporting elements. After that, you can start sawing various workpieces.

Without an angle grinder - a grinder - you can not do it either in the garage or in a private courtyard. The unit allows you to cut a metal profile, clean a weld or remove rust from the surface of workpieces and parts, has a low price and incredible ease of use. The grinder also has disadvantages, one of which is the unstable quality of the cut and the danger of the cutting disc being skewed during use. You can eliminate annoying shortcomings by making a special frame with your own hands, which will turn a hand tool into a real cutting machine. This will increase the speed of work and achieve accuracy that can only be obtained on industrial equipment.

Scope of cutting machines

Cutting disc machines are widely used in metalworking, mechanical engineering, woodworking and furniture industries. The units have found their application in the household: they are used as a convenient tool for performing various works workshop and garage. The cutting machine is convenient to use for solving a number of tasks:

The advantages of disc cutting machines include convenience and ease of use, high cutting speed and accuracy, the ability to replace the cutting disc in a matter of minutes.

Due to the relatively low cost, universal units have a fast self-sufficiency, so it is advantageous to use them in small industries and small workshops.

In the household, a cutting machine is used irregularly, so buying a factory-made tool is irrational. It is better to make a special bed for an angle grinder. This will increase the versatility of the grinder, turning it into a small-sized cutting machine.

Types of devices, their advantages and disadvantages

There are two types of designs of cutting machines, differing in the location of the grinder, which can be made at home.

The first installation is a frame with a rigidly fixed corner grinder. On working surface only the cutting disc is visible, which freely passes into the slot of the table. cutting metal profile or sheet in this case is completely identical to sawing wooden blanks using circular saw. Despite the very simple design, such a scheme is not particularly popular. Those who made such a device note the inconvenience in use due to the need to move the workpiece. This significantly reduces the accuracy of the work and makes the process unsafe. The only advantage of a machine with a bottom angle grinder is the ability to quickly cut thin metal sheets.

A cutting machine with a lower angle grinder can be used both for cutting metal and as a circular saw

The second scheme, in which the part remains stationary, but moves itself cutting wheel, more convenient. The so-called pendulum saw, located above the tabletop, allows you to cut the workpiece exactly at the required angle, while it becomes possible to make the required number of parts of the same type. Due to the location of the grinder on top, cutting workpieces does not require effort, and the operation of the unit becomes simple and safe. The undoubted advantages of the design include the ability to quickly dismantle the angle grinder for traditional use. As for the disadvantages of this method, weak link can be considered a swivel, which complicates the design of the machine.

The machine for cutting metal with the top location of the grinder has a more convenient design and makes it possible to cut blanks at the desired angle

The device of a pendulum saw from a grinder

A pendulum saw from a grinder is available for assembly at home, does not require expensive materials and special skills. The cutting machine has a simple design and consists of several components:

• bed;
• pendulum;
• fastening under the angle grinder.

The bed is a steel frame, welded from shaped pipes, with a platform made of sheet metal with a thickness of at least 3 mm. A bracket is attached to this plate, on which the hinge is mounted. pendulum saw, as well as an emphasis to hold the workpiece. By the way, there can be several such stops: it is convenient when one element allows you to make a perpendicular cut, and the other makes it possible to cut the material at the required angle. The most perfect stop is a rotary device with a protractor, with the help of which any angle between the part and the cutting disc is set. An important detail: at the point where the saw touches the platform, a cut is made in the tabletop, its width should be equal to twice the thickness of the cutting circle, and the length should correspond to the diameter.

The standard design consists of a bed, a pendulum and a mount for an angle grinder

The pendulum of the cutting machine is a T-shaped piece made of a rectangular metal profile. On the one hand, this assembly is attached by a movable joint to the frame bracket, and on the other hand, a mount for a grinder is attached to it. The mobility of the hinge of the pendulum saw is provided by rolling bearings or bushings, and the return of the tool to its original position is provided by a flexible element (rubber band or spring).

The grinder mount is a console with one or two brackets connected to the pendulum. An angle grinder is attached to one of them with bolts. To do this, threaded holes are provided in the body of its gearbox for attaching the handle. The second bracket is a conventional clamp (ladder) that holds the cutting tool by the body.

Convenience in the operation of equipment can be significantly increased by connecting the angle grinder to a foot switch-pedal. Of course, in this case, the angle grinder start lever is brought into working position and fixed with a special button.

Necessary tools and materials

When starting to manufacture a cutting machine, it should be understood that the accuracy of its work is directly related to the stability of the structure. Therefore, the choice of material certain thickness dictated not so much by the requirements for the strength of the hull, but by the need for its rigidity.

Before starting work, you need to prepare:

• profile pipe "square" (25x25x2.5 mm);
• profile pipe "rectangle" (40x20x2.5 mm);
• metal sheet 4–5 mm thick;
• ball bearings No. 202, 203 or 204 - 2 pcs.;
• a calibrated bar with a thickness equal to the diameter of the hole in the inner race of the bearing (up to 100 mm);
• bar with a diameter of 8–10 mm;
• metal tire (20x4 mm);
• bolts and nuts with M8 or M thread.

Of the tools you will need:

• Angle Grinder;
• drill or drilling machine, a set of drills;
• a set of dies for cutting metric threads;
• wrenches;
• welding machine.

The presence of electric welding is desirable, but not necessary - all connections can be made on threaded connections. However, it should be understood that this method reduces the reliability and strength of the structure.

For the manufacture of the machine, it is better to choose a grinder from a well-known manufacturer

The main unit of the cutting machine is the angle grinder. It is not recommended to use a "small" grinder, designed for cutting discs with a diameter of up to 125 mm with a power of up to 500-600 watts. Remember what larger diameter cutting wheel, the more versatile and reliable the machine will be.

The careful choice of power tools is also due to the wide variety of designs of angle grinders on the market. Since such equipment is not unified, the cutting machine is built for a specific model and size of the angle grinder. If the equipment is unreliable, then in case of failure it will be difficult to install another angle grinder in its place without the need to remake the mounts and the pendulum. That is why it is better to choose products from trusted manufacturers - Makita, Bosch and so on.

Making a cutting machine with your own hands

Preparatory stage

Work on a cutting machine begins with design. It is impossible to give the exact dimensions of the device, since the design depends on the model and size of the particular angle grinder. Nevertheless, according to the presented drawings, you can get an idea of ​​​​the dimensions and structure of the equipment.

A project sketch begins with a hull drawing. You may not need a frame, but a separate platform that can be attached to locksmith's workbench. In any case, the dimensions of the device and the location on the body of the main components are determined. Next, the angle grinder and the center distances of the mounting holes on the body of its gearbox are measured. Based on these indicators, a drawing is drawn up for attaching the grinder to the pendulum. After that, the rotary assembly itself is designed. The smaller the distance from the swivel to the cutting wheel, the stiffer and more accurate the machine will be. In other words, the length of the pendulum should be as short as possible.

On last step designing calculate how much and what kind of material will be needed.

Photo gallery: Drawings for the manufacture of a homemade cutting machine

Drawing of a frame-type cutting machine. Frame dimensions are selected based on the dimensions of the tool used.

Drawing cutting machine pendulum type. On the left are the dimensions of the base. The design features of the pendulum are marked on the right.

Step-by-step instruction

1. In accordance with the drawing, the blanks of the future machine are cut. Profile pipes are used for the frame and pendulum, and a metal profile, a metal tire and a steel bar are used for cantilever mounting. If the design provides for a carrier platform, then sheet steel with a thickness of 4–5 mm is cut to size.
2. A transverse axis (shaft) is welded to the pendulum lever, which is a section of a profile pipe, for a hinged connection. In this case, it is important to ensure the perpendicularity of the shaft attachment to the pendulum.

   After cutting the material, a shaft is welded to the pendulum arm

3. A U-shaped bracket is bent from a steel tire, holes for bolts are drilled in its sides, with the help of which the gearbox housing of the angle grinder is attached.

   For fastening to the threaded holes on the angle grinder gearbox housing, you will need a U-shaped bracket

4. A U-shaped clamp (ladder) is made from a steel bar and clamping bar for fixing the tool body to the pendulum. The latter is a metal plate 15–20 mm longer than the clamp width. The threaded ends of the stepladder freely enter the holes on the edges of the pressure plate, and fixation is carried out with nuts with a suitable thread.
5. Trying on a U-shaped bracket and clamp to a grinder, welding or threaded connection mount these parts on the console.

   This is how the console for attaching the angle grinder to the pendulum arm assembly with a U-shaped bracket and clamp looks like

6. The bearings that will ensure the rotation of the pendulum are pressed into the supports. As the latter, you can use both ready-made factory bearing units and segments steel pipe(15–20 mm) with a diameter equal to the outer race of the bearing.
7. Bearing units are pressed onto the shaft from both sides. It is important that the connection is tight - this will eliminate unwanted longitudinal and transverse displacements. If the resulting connection is weakened for some reason, you can use the proven method - tin the axis with a soldering iron, applying a thin layer of tin to its surface (you will need soldering acid as a flux).
8. At a distance of 50–60 mm from the edge of the platform, a pendulum assembly with support nodes is welded. It is important not to overheat the bearings, so these parts are wrapped in wet rags or constantly poured with water to cool.

   The pendulum arm assembly with bearing assemblies is welded to the platform at a distance of 50–60 mm from the edge

9. A console is welded onto the pendulum lever with clamp installed and U-shaped fastening angle grinder. The position of the angle grinder is chosen based on personal preferences. There are different opinions on how to fasten the grinder ("on your own" or "on yourself"). Professional locksmiths work with the tool, orienting the sheaf of sparks towards themselves, arguing that if the grinder falls out of their hands for any reason, the tool will fly off in the opposite direction. Hobbyists most often work with medium or small grinders, so they prefer to have the disc rotate "from itself", as this allows control of the cut and prevents damage to clothing. When fixing the tool, do not forget to place the protective cover correctly - it should protect the worker in the event of a disc rupture.
10. An angle grinder is attached to the assembled machine. Focusing on the weight of the tool, select and install the return spring. To do this, loops are welded to the frame and the pendulum or holes are drilled with a diameter of up to 5 mm.

    In order not to damage the plastic body of the grinder, strips of rubber are laid between it and the brackets

11. Perform a trial run grinder. First, check the operation of the machine in idle mode. At the same time, attention is paid to vibrations and backlashes of the working parts of the equipment, which, if necessary, are eliminated.
12. Using a cutting wheel of maximum thickness, a groove is cut in the machine platform for cutting disc. If necessary, the grinder is removed and the slot is expanded to the desired size.

    It looks like an improved emphasis with a clamping device

At the last stage, stops for blanks are attached to the platform. Most often, two strips are provided (for cutting at an angle of 45 and 90 degrees), fixing them with a welded or threaded connection.

Often, fixtures for holding the workpiece are equipped with a measuring tool. By fixing a metal ruler on the stop bar with a reference point from the grinder disk, you can quickly and accurately cut off the part of the required length. Also, if desired, you can install protractors, a vice and clamps various designs. Such additional details allow you to make, for example, a full cut or groove in the workpiece at any angle, free your hands, and so on.

Do not forget to paint the fixture after all finishing activities have been carried out. Even a thin layer of enamel will protect the equipment from rust and make it appearance more aesthetic.

Video: How to make a cutting machine from a grinder with your own hands

Safety

In the process of working on a cutting machine (as well as during its operation in the future), safety precautions should be strictly observed. Be sure to use a protective mask or goggles, and position the angle grinder so that the sheaf of sparks is directed away from you. The high fire hazard of the equipment requires work in a ventilated area and away from fuels and lubricants. During welding activities, a protective mask, thick leather gloves, closed shoes and protective overalls should also be used.

When working with a cut-off machine, do not try to speed up the process by applying excessive pressure to the tool. At best, such a rush can result in a torn disc and a jammed clamp nut.

When using a welding machine, ensure good grounding and avoid operating the equipment with exposed cable sections. Remember that welding in open areas in rainy weather prohibited. As for the operation of the cutting machine, when arranging a button to turn it on, protect yourself by installing a simple decoupling with a 12-volt power relay. To do this, you can make a pedal with any non-latching switch (for example, a doorbell button) and use any solid-state relay rated for switching currents of at least 10A. A battery or accumulator with a voltage of 5 to 24 V is used as a power source.

The cutting machine from the grinder is handy tool, which can be easily made if you have the skills to work with electric welding and metalwork tools. Made in just one day pendulum Circular Saw will save time in the future and will allow you to perform plumbing and welding work precisely and accurately.