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Attachment to the grinder for a smooth cut. All about accessories for grinders. Do-it-yourself video attachments for a grinder

An angle grinder, if you know and correctly use all its capabilities, is a truly universal device that lends itself to almost any material. And if we are talking about the processing of wood on a large scale, then the "grinder" is much more effective than manual abrasive tools and fixtures. The main thing is to choose the right nozzle. This article will help you understand their main modifications and specifics of application.

Rough cleaning of wood

planer disk

Such a nozzle almost completely replaces this hand tool.

An irreplaceable thing, if it is required, for example, to make a rough processing of a log - when erecting a log house, preparing fence supports, and so on.

Application Features:

AT this case the protective cover can be removed. Such a nozzle is one-piece, and its destruction does not occur. But protection from flying wood chips (glasses, tight clothing, gloves) is required.
It is allowed to work only with a “grinder”, in which a second handle is provided (or installed). The angle grinder must be held when roughing wood with both hands.

Peeling disc

The main purpose of such nozzles is to remove the bark from the wood, to trim the workpiece. If the "grinder" is in capable hands, then with such a device you can make a sample of the material. For example, if you need to cut a bowl. If a log cabin is being built, then an angle grinder with such a nozzle perfectly replaces a carpenter's ax.

In some cases, a peeling disc can be used to cut. True, the cut will be wide, and there will be a lot of waste (chips, sawdust).

Milling

Disks

These nozzles are available in various designs. The main difference between the devices is the size of the abrasive grains.

They are not much different from rasps in terms of specific application. The difference is only in the speed of the technological operation. With certain skills, it is advisable to use these for finishing wood.

cutters

They are, and specially for wood. The assortment is significant, since nozzles of this type differ in the configuration, location and size of the teeth.

Purpose of cutters:

Selection of grooves.
Edge trimming.
Cup cutout.
Sawing (for wooden blanks of small section).

Application specifics:

When processing wood with such nozzles, it is forbidden to dismantle the protective cover.
Each product has instructions. It clearly indicates for what types of work this nozzle is intended, the recommended speed of the grinder, and so on.

wood sanding

If you decipher the abbreviation angle grinder, then it is clear that it is the finishing that is the main purpose of the grinder.

cord brushes

They are mainly used for primary (rough) grinding of wood, when it is required to smooth out the irregularities of the sample.

End disks

The names speak for themselves. Such nozzles process the final parts of wooden blanks (cuts). Especially effective if you have to deal with angular (oblique) cuts.

Petal nozzles

The most used grinding devices for the grinder.

Such nozzles are applied sequentially, so several of them will be needed to process wood. Grinding begins with a disc with a "coarse" abrasive, and gradually the size of its grain must be reduced. Consequently, the devices in the process of working on the "grinder" periodically change.

grinding wheels

The most universal adaptation to the "Bulgarian". It alone is enough for varying degrees of grinding. The nozzle itself is a metal base on which circles with one grain or another are attached. They are easy to change, or as they wear out, or in the event of a transition to another area of work. Therefore, only circles are consumables. The nozzle itself is used indefinitely.

Application specifics:

Wood grinding.
Parquet scraping.
Edge and end processing.
Cleaning wood before painting.

wood polishing

For these purposes, brushes, disks, circles are used. Their "working elements" can be made of sponge, felt, fine-grained "sandpaper" and a number of other materials.

The article provides examples of only the main types of nozzles for the grinder. There are quite a few products of this class, so it is easy to choose the best option for processing any wood. The author hopes that the information provided will help the reader in this.

On a note!

Wood processing also means its cutting (sawing). Sometimes, in the manufacture of piece parts, it is necessary to adjust them at the installation site even before starting to grind the sample. Some "craftsmen" (and there are many of them among friends and on the Internet) are advised to use for such operations. It is strictly forbidden! Here are just the main reasons why this should not be done.

"Bulgarian" - a high-speed machine. And although the metal from which the cutting discs are made is durable, in this mode it does not withstand for a long time. More precisely, cutting edges (teeth), which are fixed by soldering. With intensive work, they fall off and scatter to the sides, and with great speed. The consequences are easy to predict.
Not all discs are suitable for installation on angle grinders in terms of size (primarily, outer diameter). So, you have to dismantle the protective cover. The same thing - you can forget about the safety of the employee.
The structure of wood (even hardwood) is quite loose. Therefore, it is highly likely that the saw blade may jam due to constant vibration. How the “Bulgarian” will behave in such a situation, given its power and speed, no one will undertake to predict. But the fact that it breaks out of hands quite easily is unequivocal.
Constant changes in the mode (for the same reason - the viscosity of the lumber) lead to a systematic overheating of the angle grinder engine. With this use, the "grinder" will not serve for a long time.

That is why wood processing with its help is carried out only superficially - rough cleaning, grinding, brushing. And for cutting, you should use sawing tools and mechanisms (hacksaw, circular saw, electric / jigsaw, and so on).

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

TEST:

Is it possible to make a homemade miter saw from angle grinders: a test with answers based on the materials presented

What are the emergency stop switches?

a) manual;

b) hand and foot.

What angle grinders are suitable for creating cutting machine?

a) pneumatic and electric;

b) rechargeable.

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

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

a) trimming, cutting;

b) grinding, milling, grinding.

Where can I place a grinder in a cutting machine?

a) above the tabletop;

b) under the tabletop.

The correct option is b). Foot switches are more convenient as they actuate quickly.
Theoretically, there will be enough power in all three options. In practice, apply a) - electric and pneumatic models. The battery for the stationary machine is not needed. For a pneumatic drive, you will have to purchase a compressor of the appropriate capacity.
900W or more. Correction is done if the processing of workpieces from relatively soft materials is expected, or at high speed.
Both options are correct. A powerful grinder is suitable for creating various household and semi-professional machines.
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

In order not to doubt the correctness of the decision made, study the following facts:

without secure fastening, the workpieces vibrate, increasing the risk of damage to the disk;
a heavy tool is difficult to manipulate with high accuracy while maintaining perpendicularity incision;
difficulties increase when processing thick products, when creating a large batch of parts of the same type;
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.

Note! 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. A rotary table with measuring fixtures will help you 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

For self-creation machine must be selected 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 technology and purchase the necessary equipment.

Below is a step-by-step self-assembly algorithm with helpful comments:

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.
Cut blanks for power frame. The table is made of sheet steel with a thickness of at least 5 mm.
A transverse shaft is attached to the pendulum lever by welding. When creating this node, the perpendicularity of the parts is carefully controlled.
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.
Additional fixation is provided with a metal clamp. All of these mounts are made rigid to improve accuracy.
Swivel bearings are pressed in. Instead of standard factory-made units, thick-walled steel pipes of suitable inner diameter are used.
The assemblies are fixed on the axis of both sides.
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.
Weld a block with a mount for a grinder. Installed in place angle grinder, protective devices, return spring.
They clarify the build quality, the reliability of the fasteners, the functionality of the pendulum. Connect the machine, check the performance, first at idle and then in the operating mode. The groove in the table is cut with a disc of the appropriate width.

Look at Picture No. 8. Here is a circuit diagram to the drawings, improving the protection of equipment from overheating. It will also come in handy for a quick emergency shutdowns. One or more buttons to break the corresponding circuit are installed in a convenient place on the 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. In addition, moving units are closed, preventing access of unauthorized persons to the 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 products are a good basis 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

Note! 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 decision 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

In order for the machine to perform its 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

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.

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.

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.

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

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

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

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

The grinder, which is also called the angle grinder (angle grinder), is a universal device. With this tool, you can perform different kinds processing, such as cutting, grinding, polishing, chasing, etc. The angle grinder is suitable for working with stone, metal, and wood blanks. The effectiveness of the device depends on the correct selection of the nozzle for the grinder. In order not to make a mistake when choosing the right product, you need to study its types.

Processing of almost any material is carried out using angle grinders with a variety of nozzles

On the modern market you can find many varieties of circles for angle grinders. A huge number of modifications can confuse an inexperienced person. Each nozzle type has its own operational features that define the design of the product. Differentiation of such instruments occurs according to the following criteria:

appointment;

material of manufacture;
size.

Today you can find many circles on the grinder, which are used for processing metal, wood or stone parts. The purpose of the product is determined by its labeling. It should be noted that some types of nozzles are universal. For example, a stone wheel is often used to cut ceramic tiles, concrete and brick products.

However, most discs are only suitable for highly specialized work. Nozzles for metal should never be used when cutting wooden logs or planks. And the circles that are used for roughing steel are not usually used for stainless steel.

Helpful information! Why is Bulgarian called Bulgarian? The answer to this question is very simple: in the USSR, the first samples of this device appeared in the 70s. They were delivered from Bulgaria, so this name was assigned to the device.

Angle grinders are used for cutting and grinding materials. If desired, you can choose a circle for processing glass, plastic or marble slabs. All tools for angle grinders are divided into types according to the class of processing, as well as the degree of rigidity.

Classification of nozzles on angle grinders depending on the type of work

Nozzles, which are used for cutting various materials, can be used to perform many operations. Each fixture has unique properties and design. Depending on the purpose of the nozzle are:

cutting;
saw;
peeling;
cleaning (grinding);
for making seams;
polishing.

Cut-off. Such circles are used when it is necessary to cut or cut the material (rough). The cutting nozzle for angle grinders has the shape of a disk equipped with a cutting edge. In some cases, such circles are equipped with a solid cutting part, and sometimes with a segmented one.

Saw. By name it is clear that such products are used for cutting various parts made of wood. The peculiarity of these nozzles is that their cutting part has teeth. Such discs are widely used for sawing wood, drywall, chipboard and fiberboard. With the help of a saw blade, you can make a smooth cut of ordinary and laminated boards. It is worth noting that the teeth of the saw blades for the angle grinder may differ in shape, which affects their operational purpose.

Peeling. Such nozzles are used for grinding metal, concrete and wood blanks. Using a similar disk, you can easily remove an old layer of paint or varnish from the surface. Grinding wheels are also used to remove primer. If necessary, these products are used for grinding.

Strippers. Cleaning nozzles are included in the peeling group. They are circles, the edges of which contain a metal wire. Cleaning discs are used to remove rust from metal surfaces, as well as to eliminate other types of stubborn dirt. Most often they are used to prepare pipes for painting.

One of the most common types of cleaning nozzles is the petal circle. This product is used for processing workpieces made of metal, wood and plastic. The petal circle is a disk, along the edges of which small pieces of sandpaper are fixed. Depending on the nature of the work, the grain size of the working components is selected. On the modern market, you can find varieties of petal disk:

end;
batch;
having a mandrel.

A cleaning (grinding) nozzle for a grinder with a mandrel is used when it is necessary to ensure high work accuracy. Many products belonging to this group are used to remove burrs after cutting metal and plastic pipes.

Helpful information! With the help of cleaning wheels, the finishing of welds is performed.

Stitching attachments are used to arrange stitches in stoneware, concrete, and asphalt pavement. Seam wheels are specially designed to perform this kind of work.

Polishing. These products are used for polishing surfaces. Most often they are used after grinding. This group includes the following types of discs: felt, felt, as well as an emery wheel. Velcro is used to fix them on the tool, so they are very easy to change.

Nozzles for grinder: classification by material

For the manufacture of nozzles that are used while working with angle grinders, apply various materials. All of them are different high efficiency and are made with safety in mind. For example, many metal wheels have special slots filled with copper to prevent the disc from overheating during operation. Consider what materials you can buy circles for angle grinders.

diamond circle. Such products include two components. The first of these is a steel base, and the second is a diamond coating. Such discs are used for processing metal blanks, as well as products made of stone, concrete, ceramics and glass. The diamond wheel for the grinder is characterized by high efficiency and accuracy of work. With it, the thinnest cut of the workpiece is performed.

"Turtle". Such a nozzle also has a diamond coating, however, the base in this case is represented by flexible rubber, which is characterized by high strength. The disk got its name due to the corrugated structure. Diamond-coated circles are fixed to the base with Velcro.

Carbide disc. For the manufacture of such devices, metals are used, the alloy of which forms a strong connection. The edges of such circles contain solder, which includes high-carbon molybdenum steels. Also, the solder contains impurities of chromium and nickel, which increases the resistance of the product to adverse operational factors. Such discs are used for cutting metal (less often - wood).

The "turtle" nozzle has a corrugated structure, and the diamond-coated circles are fixed to the base with Velcro

Abrasive. Such a circle is made of latex paper, the main characteristics of which are density and resistance to moisture. Similar devices for angle grinders include a special reinforcing mesh in their structure. An abrasive layer is applied to such a base. Wheels of this type, used for grinding, may have a polymer base.

Cleanup. This disc includes a metal wire that removes paint, varnish and heavy pollution from the treated surface. The diameter of such a wire is selected depending on the nature of the work.

Note! Separately, it should be said that the nozzles used for angle grinders include support plates. These products are made from polymer materials or hard rubber. They are used in combination with some grinding and polishing tools.

Cutting devices for grinders: their features

Cutting a wide variety of materials is the most popular operation for which an angle grinder is used. A very important point necessary for this task is the competent selection of nozzles. The choice is made depending on what material will be processed. For example, for cutting metal, cutting wheels are used, for the production of which a crystalline mineral, corundum, is used.

All circles for the grinder are color-coded depending on their purpose. For example, for cutting metal objects, it is customary to use discs with blue markings. It is important to remember that cutting wheels are recommended to be installed on angle grinders with speed control.

Cutting products for metal processing are also differentiated by dimensions. The main geometric data of such nozzles include:

outside diameter;
thickness.

Metal cutting discs are available for three types of angle grinders: small, medium and large. The diameter of these products varies from 115 to 230 mm. Circles of 125 mm are very popular. Less common are products with a diameter of 150 and 80 mm.

The thickness of such devices ranges from 1 to 3.2 mm. Accordingly, large circles are made thicker in order to have sufficient rigidity. And for small nozzles, this indicator can be completely different.

Cut-off bits, which are used to work with stone and concrete, are made of a completely different material - silicon carbide. Such an abrasive ensures the effectiveness of angle grinders when cutting white bricks, as well as slate. The most common type of grinder is angle grinder 125 (with speed control). This is due to the fact that it is the most functional and has a low weight.

Silicon carbide is not suitable for processing red bricks. In this case, it is customary to use circles with diamond coating applied to a metal base.

Related article:

Types of wood discs for angle grinders: sawing, cutting, peeling, grinding and polishing. Rules for using angle grinders for wood.

Such products have a green marking that allows you to accurately select them for the grinder. Photos of silicon carbide products, as well as other types of discs, make it possible to visually appreciate their differences.

Note! Different discs are used to cut wood. This can be a chain circle, along the edges of which a chain from a chainsaw is installed, or a metal product with teeth (circular).

Experts recommend taking into account the technical characteristics of wood when choosing a nozzle for a grinder. The chain saw is most suitable for working with wooden products. This material has a high viscosity coefficient, so it is the most difficult to process. Before starting work, it is recommended to study the safety rules and take the necessary precautions.

Peeling attachments for grinder: varieties

To remove paint and varnish materials and rust, special nozzles are used - peeling. This group includes several types of discs, which differ in the material of manufacture and characteristics. In order to remove a layer of paint from the pipe, metal brushes are used. Bulgarian is often used for such work. The brushes can be in the form of a bowl or a disk with coils of metal wire around the edges.

In order to select the required processing intensity, it is required to select the desired wire diameter. In this case, a certain pattern can be traced. For a rougher impact, nozzles with a larger diameter wire are used. Accordingly, thinner wire is used for gentle processing.

The design of the nozzles takes into account two options for placing the wire. In the first case, it is collected in bundles of various thicknesses, and in the second, it is located freely. Nozzles for grinders for removing paint from metal products are very popular. It is worth noting that, in addition to brushes, there are other devices that belong to the peeling group, such as:

diamond peeling nozzles;
abrasive grinding wheels.

They have a lot in common. However, the location of the abrasive material in this case is different: it is located along the perimeter of the disk. Thus, the processing is done in a slightly different way. It is important to remember that diamond-coated roughing heads are not commonly used for metal workpieces. They are used to remove layers of stone, concrete and other similar materials.

In turn, abrasive grinding nozzles, which also belong to the category of peeling ones, are used when working with metal products. With these tools, you can perform rough processing of the workpiece. There are many uses for these products. Their design is excellent for grinding metal. Nozzles for a grinder of this type are used for processing welds, as well as for. The thickness of these products may be different, but it should not be less than 5 mm.

Helpful information! The universality of the angle grinder has influenced its wide distribution. Bulgarian is used in almost all areas of construction. This tool is used for cutting, grinding, polishing and other processing options for a wide variety of materials.

Grinding nozzles for grinder: rough and gentle processing

Grinding is one of the most popular processes for which angle grinders are used. With the help of such a tool and a set of nozzles, it is possible to carry out rough and gentle processing of metal, stone and wooden surfaces. As a rule, grinding precedes polishing of workpieces. The nozzles that are used in this case may consist of sandpaper or felt material.

The petal disk for the grinder was widely used. This tool consists of a circle (base), along the edges of which sandpaper petals are fixed. They may have different grain sizes. This indicator is selected depending on the nature of the work.

The use of a petal wheel allows for roughing workpieces from different materials. It can also be used for fine sanding. For finishing, fine-grained petals are used.

Today you can find another type of grinding discs for grinders. Some abrasive products are fixed to the base with a special Velcro. To use such a circle, it is necessary to screw it onto the tool spindle.

Polishing is the softest wood treatment. For polishing jobs that are related to finishing stage turning this or that material, special felt discs are used. And also on the tool market you can find circles, the working part of which consists of a dense fabric. Nozzles for polishing grinders are very popular when working with wood, as their use allows you to bring the surface of the material to the smoothest possible state.

Nozzles on the grinder for rough processing of various materials

For rough grinding various surfaces special disks are used, which have their own characteristics. Rough processing of wood is aimed at eliminating knots, as well as a layer of bark. The use of such nozzles for metal blanks allows you to remove paint and rust.

Today, there are several types of nozzles for grinding on a grinder. For example, peeling discs are very popular. Among them there are products that are used for processing stone and concrete (diamond) and abrasive wheels used for metal parts.

Roughing products are often used to remove an old layer of paint. In some cases, they are used to remove varnish. Another common variant of the nozzle on the grinder is the brushes. The design features of these elements are reflected in their effectiveness. The disc, which has a metal wire, is able to quickly remove paint from a metal surface.

Note! In the building materials market, you can find end circles for angle grinders. Such products are used when it is necessary to align the cutting line of the board. Aligning the ends with an oblique cut is done quite often, so this tool can be called indispensable.

Separately, it should be said about the nozzles for polishing cars. For rough processing of a paint and varnish covering (LKP) machines apply special woolen disks. The material in such a circle can be located freely or twisted into dense threads.

Also, abrasive discs are used for rough processing of cars, which are distinguished by high functionality and a longer service life.

Today you can find other nozzles on the grinder for polishing cars. For example, felt and felt discs are very popular. To finish the paintwork of the car, vulcanite nozzles are used, the main material of which is rubber.

Nozzles for grinder for grinding: gentle treatment

For coarse grinding of certain materials, petal nozzles are used primarily. They, as mentioned above, consist of petals located close to each other and having an abrasive coating (sandpaper).

The grain size of the petal nozzles can be different. It is selected depending on the nature of the work. It is worth noting that the design of this grinding nozzle allows it to serve for quite a long time, which is a definite plus. In shape, individual petals resemble a trapezoid.

The second type of nozzles, which are classified as soft, are grinding wheels. They are made of sandpaper, felt or dense fabrics. Discs of this type are fixed with Velcro on a plate basis. They are usually sold in a set.

For processing wood, a kit is used that includes 5 discs. They all duplicate each other. In case of wear of one circle, it will not be difficult to replace it with a new nozzle. Similar products are used for finishing wooden surfaces. There are other nozzles on angle grinders that are used for grinding wood. For example, wood cutters for grinders are very popular.

Felt circles, as well as products that include dense fabric in their design, are used for wood processing. It is important to remember that for grinding with the help of such circles, it is necessary to use a special wax paste. It is applied to the surface of the part before starting work.

Another type of nozzles that is used for finishing wooden surfaces is cup products. They consist of nylon fibers, which together form a fairly dense coating.

What discs for grinding concrete and metal are used most often

For grinding concrete, two types of nozzles are used on angle grinders: diamond and abrasive. It is important to remember that its effectiveness depends on the diameter of the circle. The larger the disk, the more load it can carry.

Note! Discs of this type are actively used in the installation of concrete screed. Its grinding can significantly improve the strength characteristics. At home, a grinder equipped with a special nozzle is enough to perform a similar operation.

Nozzles for a grinder for grinding concrete can be purchased on the market, in a hardware store, or you can place an order via the Internet. To date, there are two methods of grinding this material:

dry;
wet.

In the first case, the operation is performed using special disks. Dry grinding of concrete is highly efficient, but it also has some disadvantages. The main disadvantage is abundant dust formation. Before starting dry grinding, it is necessary to prime the surface, which will increase its strength.

Wet (or wet) grinding of concrete differs from the previous method in that it involves the use of water, and this avoids the formation of dust. This type of grinding is considered to be of higher quality, however, when using a grinder, it is not possible.

It is important to remember that grinding and polishing with a grinder are two completely different processes. When polishing, the surface of the material is processed until it is smooth. In turn, grinding is necessary to level the surface.

Grinding of metal products is carried out using special discs. They include the following materials: silicon carbide, electrocorundum, etc. And also in the composition of such circles there are special fiberglass meshes.

For grinding metal, various brushes are used, which consist of a wire located on a metal base. In addition, today you can purchase other, more technological nozzles for the grinder. The tape file is a direct confirmation of this. It is used for polishing, grinding and removing rust. It is worth noting that the angle grinder must have smooth speed control, which is necessary condition to use this nozzle.

Grinding discs for metal are used for the following operations: sharpening tools, fine finishing of welds, as well as cleaning the surface from rust and paint. When choosing nozzles for metal, you must first be guided by how much work you have to do.

Nozzles for a grinder for grinding wood: peculiarities

For sanding wood surfaces, petal and round nozzles are used. In the first case, sandpaper is fixed around the perimeter of the disc. In turn, round discs provide for fastening emery wheels with Velcro. Both options for woodworking attachments are quite convenient. In some cases, such tools are equipped with a special adapter that allows you to use.

Helpful information! Nozzles for grinders for grinding wood can have different grain sizes. Her choice depends on the type of work. Coarse-grained products are used for rough, rough processing, and fine-grained products are used for fine finishing.

Which tool is best for wood sanding? This operation can be performed using an angle grinder or a special grinder. The choice of tool depends on the purpose for which the surface will be processed. If grinding is necessary in order to prepare the wood for painting, then you can use a special disc on the angle grinder.

For varnishing wood, it is best to process it with a grinder. There are several varieties of this equipment. Longitudinal type devices are so called because of the direction of movement of the emery tape. In turn, in the vibration variety, circles are used on which abrasive material is applied.

Metal brushes for grinders for rust cleaning and woodworking

Many people believe that with the brush heads used for angle grinders, only steel products can be cleaned. However, such tools are also used when it is necessary to process wooden parts. For wood, nozzles with brass wire are used.

Brushes have some advantages over abrasive discs. They have a long service life and lower cost. They are used when it is necessary to remove rust or old paint from the workpiece. Separately, it should be said that brushes are indispensable tools for processing hard-to-reach places.

Brass nozzles on angle grinders for woodworking allow you to remove paint and varnish material as efficiently as possible. Brushes are used for more than just cleaning surfaces. This tool is also used when it is necessary to artificially age the wood. This process is called brushing.

Brushing is used to create unique design interior items. Using the angle grinder, you can process small items. On an industrial scale, such a tool is not operated. The nozzle for brushing on the angle grinder allows you to highlight such elements of wood as rings and various irregularities.

Metal brushes are able to quickly and effectively remove old paint from steel pipes, remove rust and plaque. When choosing such nozzles, it is imperative to pay attention to their rigidity, since the operational efficiency of the brushes depends on this indicator.

To use such a nozzle, you must have an angle grinder, which provides for the possibility of installing a second saw blade. And it is also necessary that it has an outlet for connecting a vacuum cleaner. Shtrobleniye generates a fairly large amount of construction debris. To protect the master during work, a casing for the angle grinder is used.

Note! Strobe attachments are not suitable for all angle grinders. The device must be powerful enough to provide the desired result. The minimum angle grinder in this case should not be lower than 1500 watts.

Before buying discs, you should pay attention to the length of the shaft. This element must necessarily have sufficient length necessary to install an additional circle. The second disk is needed to form the opposite wall of the groove.

For use, you must have a grinder, which provides for the possibility of installing a second saw blade

The dimensions of the disk itself also play an important role. This is due to the fact that the diameter of the circle affects the depth of cut and work efficiency. Security is also important point, depending on the dimensions of the nozzle on the grinder for chasing.

Such a design affects the nature of the load: it becomes more uneven. Therefore, when choosing a tool, it is necessary to pay attention to what type the bearings belong to. Ordinary ball parts fail much faster. Experts recommend using angle grinders with roller bearings for chasing. Needle products are also suitable for such work.

During operation, the chasing wheels must act in one direction - towards the master. Otherwise, the tool will be repelled from the work surface.

Before starting work, it is necessary to attach a nozzle to the angle grinder for a vacuum cleaner to the angle grinder. A tube is fixed to it, which is required to remove dust and larger particles. During operation, it is necessary to hold the tool firmly to prevent the discs from jumping off.

If necessary, the grinder attachment can be installed on a chainsaw. It is easy to buy such a product in any store that specializes in the sale of gas tools. Its installation is described in detail in the instructions, so there should be no problems.

Some chainsaws are simple in design, so it is much easier to install a grinder on them. For example, the Stihl chainsaw is very popular. The attachment of the grinder on the saw may fit some models, compatibility with which is not indicated in the technical documentation of the tool. In order to choose the nozzle correctly, experts recommend comparing the diameter of the crankshaft of the saw with the same indicator of the grinder hole.

A variety of nozzles on the modern market makes it easy to change the purpose and performance of the device. However, not everyone knows about the possibility of converting a chainsaw into a cutting and grinding tool. Most people are familiar with the reverse. – nozzle saw on the grinder.

Note! When buying such a nozzle for a saw, one important point must be taken into account. The selection of the grinder is carried out for a specific chainsaw model.

The attachment pulley, which is the drive one, can be different type. Before buying, you need to evaluate the compatibility of the chainsaw main star and the nozzle pulley. If the tool does not fit, then it is not possible to install it instead of the clutch.

Varieties of pulley nozzles grinders on a chainsaw

It should be noted right away that there is no official classification of nozzle pulleys of this type. Consider the most common pulley options. The first of them belongs to the Stihl 180 chainsaw. It has some design features. Such a pulley looks like a closed bowl. A similar element is not collapsible and is used in the following modifications of the Stihl saw: MS 180, MS 250 and MS 170.

Nozzle angle grinder for chainsaw Stihl 180 can be installed on the drive sprocket of the saw without removing the clutch. In this case, there is no bowl at the pulley. There are several variants of this design, which are classified depending on the pitch of the sprocket. The main advantage of this type of nozzles is that they are very easy to mount. It is also worth noting their reasonable cost.

Professional type chainsaws are distinguished by the fact that they have a clutch, the sprocket of which, if necessary, can be replaced. For such devices, special pulleys are used. The cost of this tool is more, however, its quality characteristics will be better.

Attachment grinder for chainsaws Calm, Partner, Taiga, etc. is used when you need to make a smooth cut on wood or metal. During operation, you must be careful, and before starting it, you must definitely check the correct installation of this nozzle.

Rating of grinders in 2018: the best models in terms of cost and quality

To date, there is a huge variety of angle grinders, which differ in the manufacturer, technical specifications and cost. Some models are very popular, as consumers note their advantages over standard devices. Before purchasing this instrument, it is recommended to pay attention to the angle grinder rating, which contains the best representatives who have certain advantages.

Interskull UShM-125/1100E. This model of the Interschool brand belongs to the budget segment. Her distinguishing feature- the highest power among inexpensive angle grinders. Many users note another advantage of this device - soft start.

The cost of this tool is only 3900 rubles. Of the minuses, only a large mass of the product can be noted. It is used for discs with a diameter of 125 mm. For circles of 230 mm, there is a heavier model from Interschool - angle grinder 230.

Makita GA5030. Such a grinder costs about 4,000 rubles, so it is also classified as a budget segment. The main advantage of this device is the minimum amount of vibration during its operation, which affects the convenience of work.

The Makita GA5030 angle grinder has a fairly low power (only 720 watts). However, this is quite enough for working with metal pipes, ceramic tiles and wood. The weight of the device makes it easy to work with it. The mass of this model is 1.4 kg.

Bosch GWS 20-230 H. Bulgarian from a well-known German manufacturer, which is distinguished high quality assembly and components. The cost of the model is approximately 7200 rubles. Such a device belongs to the middle price segment.

Helpful information! Many users note that the Bosch angle grinder of this series is one of the the best options for home use. It is also worth noting that the device itself comes with an additional handle and 8 different circles.

Hitachi G18SS. An efficient device that has quite affordable price(6000 rubles). The advantage of this model is that it has a large margin of endurance and has protection against overheating. Bulgarian Hitachi - great option for home use.

Safety precautions when working with discs for grinders

Use of any construction tool has its own nuances. Before using the grinder, it is necessary to study the safety precautions in detail, since its improper operation can lead to serious injury.

The safety of the angle grinder is primarily ensured by a protective cover. In the event of a disc split, this element protects the master from splinters. In no case is it recommended to remove the casing from the grinder.

The direction of rotation of the disc is also important. It is impossible to allow situations in which the movement of the circle will be the opposite of the master. This can lead to the fact that the grinder will break out of your hands. The direction of movement of the disk should always be towards the person working with the angle grinder.

For home use, it is recommended to purchase an angle grinder with speed control. This is due to the fact that different materials require different wheel speeds. One of the most important rules: It is strictly forbidden to use discs that do not correspond to this or that material.

And, finally, the last thing to remember is that angle grinders cannot be used for other purposes. The passport of the device clearly indicates what this or that angle grinder can be used for, as well as the limits of its functionality. Subject to all of the above rules, working with an angle grinder will be as safe as possible, and the tool itself will last more than one year.

An angle grinder is a very common tool that can be purchased on the market, in a store or ordered online. This device has many options for use precisely due to the possibility of changing nozzles. Before purchasing a grinder, you need to take into account what it will be used for and study the range of discs. Choosing the right nozzle will allow you to do the job quickly and efficiently, and most importantly - safely.

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 work in the 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 beneficial 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 the working surface, only the cutting disc is visible, which freely passes into the slot of the table. Cutting a metal profile or sheet in this case is completely identical to sawing wooden blanks with a 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, and the cutting wheel itself moves, is more convenient. The so-called pendulum saw, placed above the tabletop, allows you to cut the workpiece exactly at the required angle, while it becomes possible to make the right 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, the 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 of the pendulum saw is mounted, 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 a material of a certain thickness is 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, 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 that the larger the diameter of the 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 a locksmith 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.

At the last stage of the design, they calculate how much and what 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

In accordance with the drawing, the blanks of the future machine are cut. For the frame and pendulum use profile pipes, and for cantilever mounting - a metal profile, a metal tire and a steel bar. If the design provides for a carrier platform, then sheet steel with a thickness of 4–5 mm is cut to size.
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
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
An enveloping angle grinder U-shaped collar (ladder) and a clamping bar for fixing the tool body to the pendulum are made from a steel bar. 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.
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
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.
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).
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
A console with an installed clamp and a U-shaped angle grinder is welded onto the pendulum lever. 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.
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
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.
Using a cutting wheel of maximum thickness, a groove is cut in the machine platform for the 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, vices and clamps of 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 outdoor welding in rainy weather is 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.

A cutting machine from a grinder is a handy tool that can be easily made if you have the skills to work with electric welding and metalwork tools. A pendulum circular saw made in just one day will save time in the future and allow you to perform plumbing and welding work accurately and accurately.

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, the thin metal of the wall in this place starts 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 evenly, and there was no cutting machine at hand yet, I used a wide masking tape as a marking:

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 burned with an electrode outer pipe so as to weld it from the inside:

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:

I made two from a profile pipe 15 by 15 square frames, measuring 50 by 50 cm. 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 the 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, I boiled, melted and cleaned the heads of all the fixing bolts on the back side 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 he 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 rotated, 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 started making protective cover. 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.