Wall chaser - attachment for an angle grinder: how to make a wall chaser with your own hands, drawings and diagrams

To install communications in the walls, you will need to use a specialized tool - a wall chaser. It is rational to buy it for professionals who are engaged in repair and construction work, in particular for electricians, plumbers, plumbers, etc. If repairs are carried out independently in a house or apartment, then it is not necessary to buy a specialized tool, since you can make a wall chaser attachment for an angle grinder. How this can be done with the least investment is described in detail in the material.

What is a wall chaser

When renovating apartments, homeowners take a new approach to the placement of utility networks and various communications:

• water supply pipes;
• heating lines;
• power cables;
• sewer risers.

It is understandable that apartment owners want to place communications inside the walls and thereby improve the appearance of the premises. The technology for hidden placement of highways involves the creation of special grooves. In the vocabulary of professional builders, such channels are called grooves. For their production, a gas silicate wall chaser is used.

Wall cutter for aerated concrete. The tool began to be used relatively recently. Before its appearance, equipment was used for chiselling grooves that created vibration during operation and negatively affected the strength of building structures:

• a bolt or chisel that was struck with a hammer. The process of creating the grooves was slow and required considerable effort;
• pneumatic hammer. The tool created increased noise and significant vibration. A lot of dust was also present during the formation of the channel;
• industrial hammer drill. During the formation of cavities, vibration negatively affected the strength of concrete and caused the formation of cracks.

The use of these types of equipment required significant physical effort and was characterized by reduced productivity and increased labor intensity. Increased concentration of dust, significant noise and vibration caused a lot of inconvenience. The outdated equipment was replaced by a wall chaser for aerated concrete - a hand-held tool that has many advantages:

• reduces the duration of laying channels in walls;
• reduces the labor intensity of construction operations for gating;
• allows you to provide the necessary channel geometry in various building materials;
• provides the ability to adjust the width and depth of the cavity being formed;
• removes dust from the treated area, reducing dust concentration;
• forms a channel of the correct shape with constant dimensions along the length.

Industrial wall chaser for aerated concrete.
For one-time work, there is no need to purchase an industrial wall cutter for aerated concrete, which is quite expensive. There is a good solution - you can assemble a wall chaser from an angle grinder with your own hands. Drawings are not needed for this modernization, because the design is simple. Using available materials, you can expand the technical capabilities of home tools equipped with an aspiration system. The use of a self-made tool ensures:

• reducing the cost of plastering the groove due to the neat shape of the channel. The resulting groove does not require an increased amount of plaster;
• the ability to cut grooves in building materials with increased hardness. In this case, two cuts are performed at once in one pass.

After processing, all that remains is to remove the cut building material located between the cuts, and you can begin laying communications.

Purpose of a wall chaser, what can you do with it?

A highly specialized tool called a wall chaser is similar to an angle grinder or simply an angle grinder. A wall chaser, unlike an angle grinder, is designed directly for making grooves in walls with further installation of various communications in them, such as wires and cables, water and sewer pipelines, as well as other devices.

The wall chaser has two parallel disks for concrete; the distance between them can be adjusted depending on the technological task. This allows you to prepare a groove in the wall of the required width. This highly specialized tool also has a function for adjusting the depth of the groove being made. The required value of groove deepening is selected by moving the cutting discs, and depending on the technological task.

A wall chaser is quite expensive, and it is used exclusively for chasing walls, so not everyone can afford such a purchase. To avoid having to buy a highly specialized tool, you can make it yourself from a grinder. The design of a wall chaser is similar to an angle grinder, so it makes sense to use a grinder to make a tool for making grooves in the wall.

This is interesting!
A grinder without additional devices can be used as a cutting tool, for which a special diamond disc for concrete should be fixed in the spindle of the device.
The inconvenience of using an angle grinder as a wall chaser is that adjusting the depth and width of the groove requires skill from the worker. A special casing made by yourself will help replace this skill, and at the same time simplify the process of wall slitting. The special casing on the angle grinder allows you to get the following advantages:

1. Savings on purchasing specialized tools
2. Ease of work
3. Carrying out dust-free work on making grooves in residential and non-residential premises

In addition to a specialized wall chaser, you can make a groove in the wall for laying communications using the following tools:

• Grinder or angle grinder of different brands
• Hammer
• A hammer with a chisel is the simplest and most economical option, but the rationality of its use is determined by the volume of planned work

Manufacturers produce wall chaser attachments for angle grinders, which can be purchased at any tool store or ordered in an online store. By purchasing such a nozzle, you eliminate the need to make it yourself. However, the process of making a frame for an angle grinder is not difficult, and to make it you will not need any additional expenses.

A little about gating

A groove (the term “furrow” is less commonly mentioned) consists of two parallel grooves, the width and height of the walls of which determine the possibility of installing communications in it. To make grooves, the following groove dimensions are required:

• Width from 3 to 50 mm (the first option provides for laying only power and low-current cables in the groove, the second - for installation of heating system pipes);
• The depth of the groove is no less than its width, but it is better with a small margin of 5...10 mm;
• The bottom of the groove is smooth, without protrusions.

Sometimes you have to cut inclined grooves. For oblique grooves, all specified dimensions are usually increased by 10...12%. The groove should be as even as possible, since any slope of the groove will automatically increase the length of the cable or pipe. The distance from the groove axis to adjacent ceiling structures, openings, etc. must be at least 150 mm, and to the gas pipeline elements - at least 400 mm.

The material of the walls also matters. Since the groove is obtained by removing material from under the tool disk, all dust and stone fragments fall into the worker. Even when performing such work in walls made of foam or aerated concrete, the need for dust collection is very important, since fine dust will remain in the air for a long time.

In a professional wall chaser, all these problems are solved by connecting a vacuum cleaner with a cyclone filter to the tool. Ordinary mesh ones will become clogged with gating products within a few seconds of continuous operation of the wall chaser.

The second significant difference between gating with a specialized tool is the presence of a movable frame with wheels, which, when controlled, can significantly reduce the load on the worker’s hands. A single-disc wall chaser attachment for an angle grinder does not fundamentally solve the problem, since the depth of the groove is not limited in any way, and manual removal of the jumper is very labor-intensive and does not ensure good quality of the bottom of the resulting groove. In addition, during the second pass it will not be easy to achieve parallelism of the walls of the groove.

Nozzles for grinders for grooves

The wall-cutting attachment for the grinder should include:

1. Installing a second saw blade.
2. Socket for connecting a vacuum cleaner.
3. A protective cover to protect workers from construction debris that appears during work.
4. A seat for fastening the cyclone of a suction vacuum cleaner.

The basic conditions for the functionality of such an attachment are as follows. The grinder must have a sufficiently powerful drive (at least 1500 W), and the length of the shaft on which the main saw blade is installed must be sufficient for mounting an additional disk, with the help of which the second wall of the groove will be formed.

The diameter of the saw blade itself is also important, on which the safety of work and the depth of the cut groove depend.

The type of bearings on which the shaft rotates is also important: the presence of a second disk increases the unevenness of the load, so conventional ball bearings, the permissible axial force on which is small, will fail very quickly, with a corresponding jamming of the shaft and failure of the equipment. A tool with needle or roller bearings is required.

Finally, when the shaft rotates, the movement of the saw blade should be towards the worker, and not away from him (in the latter case, the total torque will push the grinder away from the groove obtained with its help).

A purchased wall chaser attachment for an angle grinder is prepared for work like this. The protective casing is removed from the gearbox. An additional bushing is mounted on the main shaft, which securely compresses the shaft using a clamp fastening.

The first diamond disk of the required diameter is installed on the shaft - from 150 to 230 mm; larger sizes will lead to an increase in the cantilever load on the bushing. It is not recommended to replace the diamond disc with another one, especially if grooves need to be made in concrete. A support washer is placed on the sleeve (usually, professional nozzles come with several such parts of different thicknesses, which determine the width of the groove).

The vacuum cleaner attachment is secured to the dust extraction cone using regular tape. The grinder gearbox is attached to an extended control handle. It should be noted that any wall chaser attachment for an industrial grinder has a seat for a removable handle, which is unified with a standard handle from the same manufacturer of the main tool. This is a limitation of the design under consideration.

After this, check the alignment of both disks, attach the housing to the lever support, set its stroke, and check the reliability of fixation of all elements of the nozzle at idle, and then during the working stroke.

Wall chaser for foam blocks - design features

Manual tools for grooves can be manufactured in the following design options:

• based on a regular grinder. The design provides for the installation of two concrete cutting discs on the device shaft, between which a sleeve of the required length or the required number of washers can be installed. By changing the length of the spacer element, the interval between the cutting discs is adjusted, corresponding to the width of the channel;
• modernized version. It is an improved version of the grinder, on which, in addition to two circles, a casing made of metal sheet is mounted. Dust generated during the gating process is removed through a pipe attached to the metal casing of the aspiration device;

Wall chaser based on a regular grinder

• based on a hand grinder. An improved version of the tool is similar in design to a grinder with an aspiration casing. A distinctive feature of the design is the presence of a mobile platform with wheels, fixed at the bottom of the dust receptacle. This option allows you to easily move the device along the wall without applying significant effort.

An electric wall chaser for a gas block is more efficient than a manual tool due to the following points:

• increased cutting speed;
• smooth surface of the groove walls;
• clear channel geometry;
• increased security;
• aspiration possibilities.

Modern electric scoring tools include:

• protective casing. It prevents the operator from being injured by fragments when rotating the disks;
• aspiration pipe. Provides dust extraction from the work area when connected to a vacuum cleaner;
• work site. Provides smooth movement of the device along the wall and allows you to adjust the depth of the groove;
• working handle. It can be installed in various places of the casing, providing a convenient location for the device when cutting;
• electric drive. Accelerated slitting is provided with a power of 2 kW and a spindle speed of 5500 rpm.

Models of wall chasers and how they work

Let's look at several concrete wall chasers to understand the design, operating principle and capabilities.

Interskol PD-125/1400E

Wall chaser from a domestic manufacturer. Two 125 mm discs are capable of making a furrow up to 30 mm deep and up to 30 mm wide. The power of the unit is 1400 W. And the maximum number of revolutions is 9500 per minute. The cost of this tool is about 6,000 rubles.

This wall chaser is very similar to an angle grinder, perhaps it is based on it

Bosch GNF 35 CA

A more productive version of a manual wall chaser for aerated concrete, concrete and brick. 2 cutting discs 150 mm each. The maximum groove width is 39 mm, and the maximum depth is 35 mm. The power of the device is 1400 W. The design involves connecting a vacuum cleaner and removing dust and debris. The cost of such a tool is quite high - 40,000 rubles.

A convenient and practical tool, although a little expensive

Makita SG150

Powerful and productive wall chaser. The cutting depth can reach 45 mm and the width 35 mm. The power is 1800 W, but the number of revolutions is slightly lower than usual - 7800 rpm. You can also connect a vacuum cleaner to it. The device costs about 42,000 rubles.

Functional and powerful option

Application benefits

Wall chipping is a difficult, troublesome task that takes a lot of time and effort. Previously, a variety of devices were used for such work: a chisel and chisel, a hammer drill, an angle grinder. But it is much more convenient and efficient to use a wall chaser or an attachment on an angle grinder for chasing.

So, using a specialized tool has the following advantages:

• The speed of work completion increases significantly, and labor costs are reduced.
• Can be used in conjunction with a construction vacuum cleaner.
• Work safety increases.
• It is easy to adjust the width and depth of the groove.
• The grooves are smooth, without chips or drops.

Operating and safety rules

When using a homemade device:

1. It is forbidden to turn on and operate the angle grinder with a missing or damaged protective screen. It is not allowed to install cutting tools with dimensions exceeding the permissible limits (the diameter is indicated in the passport and on the tool body).
2. It is necessary to take into account the permissible rotation speed and the suitability of the tool for the material being processed (for example, it is not allowed to saw concrete slabs with discs designed for steel structures).
3. It is not allowed to use cutting tools with defects and use low-quality consumables.
4. The rotation should be directed as the tool moves along the wall surface.
5. It is necessary to take into account the correspondence of power to the width and depth of the furrow. For example, when cutting a groove with a depth of 35-40 mm and a width of 45-50 mm, a motor with a power of at least 1500 W is required.
6. Do not force the diamond blades into the wall before cutting. To reduce the load on the power drive, you need to immerse the tool in concrete smoothly. The operator will then move the angle grinder along the marking line.
7. Safety glasses, gloves and a respirator must be used. The installed nozzle and dust removal system do not provide complete protection of the operator from flying concrete fragments.
8. Installation of new discs is allowed only after disconnecting the grinder from the AC power supply.
9. Avoid overloading or overheating the electric motor of the tool (some of the equipment is equipped with protective bimetallic fuses that break the power circuit if the temperature of the windings increases excessively). The appearance of a smell of burnt insulation and increased sparking of the collector unit indicate a malfunction of the angle grinder.

Installing two discs on the grinder shaft

The standard grinder is designed to install 1 diamond blade. To install the second element, use an extended shaft (available from some equipment manufacturers or ordered from a workshop) or a special nut.

The adapter is screwed onto the standard axle; to attach the second tool, a short shaft with a thread for fixation is provided on the bushing. To make channels up to 10 mm wide, craftsmen separate the cutting elements with washers (no additional nuts are required).

When using a double disk, the load on the gearbox bearings and the electric motor increases, which leads to accelerated failure of the grinder.

An additional disadvantage is misalignment, which leads to vibration. It should be taken into account that the adapter nut provides a fixed distance between the cutting edges, so you will need to purchase or make several bushings to make grooves of different widths.

Wall chaser design and functions

Structurally, this universal tool is most similar to an angle grinder (angle grinder), which in everyday life is called an angle grinder. It is widely believed that this is an angle grinder with two discs. Frankly speaking, it is almost correct. The main difference is that the wall chaser is equipped with a powerful electric motor, usually with the ability to control speed and smooth start. Good models have overheating and overload protection functions. In case of significant loads, they will allow you to save the tool.

The wall chaser uses diamond discs, the distance between them is adjusted to obtain a groove of the required width (usually up to 60 mm). For safety reasons, they are covered with a special casing. In addition, the casing has an outlet for connecting a vacuum cleaner, this allows minimizing the emission of dust during gating. To obtain the required depth, it is equipped with a special adjustable stop (usually up to 80 mm).

With the help of an attachment for an angle grinder, you can completely replace the wall chaser.

Preparatory activities

Since factory-made wall chasers have a price of 5.5 thousand rubles. (budget models, professional-level equipment will cost 50-60 thousand rubles), then for home repairs they use homemade attachments for a grinding machine.

The grinder must have a motor with a power of at least 1500 W, since installing a double disk increases the load on the drive.

Required tools and materials

To make the device you will need:

1. Scraps or a piece of carbon steel sheet with a thickness of 1.5 to 3 mm, required for the shield. Constructions made of plastic or plywood should not be used due to low mechanical strength and insufficient resistance to the effects of a flow of heated dust.
2. Steel tube suitable for connecting a vacuum cleaner arm (directly or through an adapter).
3. Tool for cutting workpieces, drilling holes and cleaning welds.
4. Welding inverter and protective mask.
5. Measuring and drawing tools.

Drawings and diagrams of nozzles for chipping

The angle grinder has a standard protective screen, which is used as a template for marking workpieces. The master can develop sketch drawings of the nozzle, focusing on the power of the electric motor, the dimensions of the grinder and the diameter of the cutting tool.

When manufacturing the device, the increase in the weight of the wall chaser should be taken into account. Heavy equipment is difficult to hold horizontally when cutting long furrows.

Features of choosing a tool

When there is a need to purchase such a tool, it is better to follow simple instructions:

1. Select the required power of the tool. Here it is important to be guided by the amount of work ahead. Low-power wall chasers (up to 1.3 kW) are suitable for solving small household problems. Medium-power tools (1.3 kW - 2 kW) can cope with all household tasks, they heat up much less than their low-power counterparts, and their service life is much longer. It makes sense to buy powerful models over 2 kW only for regular and very large, volumetric work. In addition, the more powerful the tool, the heavier it is. This feature should also be taken into account.
2. Determine such characteristics as the required maximum depth and width of the groove, the possibility of cutting the groove at an angle, the range of regulation of the electric motor speed.
3. Availability of additional options: slip clutch, protection against overheating and overloads, a brush wear control system, the ability to use it in “grinder mode”, the presence of a vibration protection system.

Electric

This is a powerful tool that has two rubber rollers that help the wall chaser move easily along the wall surface being processed. This furrower is equipped with comfortable handles and several cutters that move thanks to a built-in electric motor. Designed for cutting grooves in various hard building materials.

This is a fairly simple construction tool, but its use requires certain skills and experience from the master. Also, when working with power tools, you should remember to wear personal protective equipment, as they create a lot of construction dust and noise.

Do-it-yourself wall chaser from an angle grinder

A wall chaser is a rather rare tool that not everyone has, but almost every home craftsman has an angle grinder. As already noted, structurally, these tools have a lot in common, so for home use you can easily make a wall chaser from an angle grinder with your own hands.

To begin with, it should be noted that you can use a grinder for slitting without any modifications, but it will be inconvenient, dusty and ineffective. A wall chaser is incomparably more convenient in this regard, but it is expensive. The rework will not require any special material or time costs.

We should start with the main difference - the wall chaser has two discs, and the grinder has one. It is necessary to order or grind yourself a nut with an additional ring to secure the second disk. The first disk will be secured in the usual way, and the second one directly to this nut. It is best to make several nuts of different thicknesses so that you can adjust the width of the groove. It is necessary to pay attention to the length of the shaft; it should be enough to mount two disks. It may be necessary to purchase or manufacture an extended shaft. Read about how to make a casing for connecting a vacuum cleaner here.

The second stage is the manufacture of a groove depth limiter. It is much more convenient and easier to work with him. You should also make a support plane so that the grinder with the attachment can be moved along the groove.

At the last stage, a homemade protective casing is made. By the way, the depth limiter can be combined with a protective casing, which is very convenient and greatly simplifies the entire design. It is necessary to provide an exhaust pipe in the casing for connecting a vacuum cleaner, otherwise it will be almost impossible to work in a closed room due to the high concentration of dust. It is absolutely forbidden to work without a protective casing - the likelihood of injury, even death, is extremely high.

If you use a grinder instead of a wall chaser

an angle grinder with a homemade dust extractor, suitable for small jobs.
It is clear from the design that, in extreme cases, the machine for making grooves can be replaced with an ordinary angle grinder - put a concrete disc on it and make the necessary cuts in two passes. This is actually done if one small groove is needed, but practice and multiple reviews show that the dust after such a groove will settle for a long time, which can stall the whole work.

If it is necessary to make several grooves, the loss of time will be significant, and if such work is performed with some frequency, then the method becomes ineffective. Other disadvantages of this method are the inability to maintain the same dimensions of the groove edges and their depths. This cannot be called a significant drawback, but sometimes it can lead to a piece of the wall falling off when the core of the groove is hollowed out.

If the length of the mounting shaft allows, then you can put two concrete discs on the grinder at once and then the groove will be cut in one go. Even if we do not touch upon the issue of safety precautions, there will be no less dust and it will settle at the same speed. As a result, the time gain is insignificant, and the risk of injury increases by an order of magnitude.

Assembling the wall chaser

If you have a new nut, all that remains is to assemble a homemade furrow maker as follows:

• mount the first circle on the shaft;
• install the bushing that was made together with the nut;
• place the second cutting disc on top;
• we pass the modernized nut through it and tighten it until it stops; As a result, the fastening element fixes the first disk and prevents the second one from jumping off the shaft.

At the last stage, a protective casing is installed, to the nozzle of which the vacuum cleaner hose is connected.

Wall chaser - what it is and how it works

Structurally, a wall chaser is similar to a circular saw. It has a protective casing, a motor block and two cutting discs located at a distance from each other. This gap can be adjusted, thereby changing the width of the future furrow. The depth is also not fixed and can change due to an increase in the angle of immersion of the disks into the material.

Industrial wall chasers are sometimes completely different from angle grinders

Wall chasers have high power, a convenient handle for creating pressure on the discs during operation, a system for quickly replacing discs and adjusting their width. Some models can be connected to a vacuum cleaner to remove dust and debris.

How to properly operate a manual wall chaser on aerated concrete

After assembly, you should check the functionality of the device on a pre-marked cutting area and learn operating skills. Sequencing:

• Assemble the discs with the bushing on the shaft and tighten them with a nut.
• Set the required groove depth and turn on the aspiration unit.
• Press the power button after connecting to the network.
• Touch the marked surface and groove.

The device should be moved after the discs are immersed to the desired level. It is important to monitor engine heating and periodically stop the engine to cool.

Adjusting the cutting depth

Almost all models of wall chaser attachments for industrial angle grinders use roller guides with an oscillating sole. It is easy to make such a system with your own hands.

The cutting depth adjustment system looks like a frame, the front edge of which is fixed to the casing using a hinge, and the opposite side is fixed with a bolt-nut fastening. When the wing or bolt head rotates, the back bar with rollers deflects, which allows you to accurately adjust the depth of the wall chaser nozzle disk.

Hammer

Another common and fairly simple way to make a wall chaser yourself is to use a hammer drill. But instead of the usual drill, you should insert a cutter of the required size into it.

Such a wall chaser is quite simple and does not require much time and effort to manufacture, but at the same time it produces a very low quality of work. The groove is not only curved in height and length, but also of different depths and widths. As a result, you will have to spend much more time on gating and a much larger amount of finishing materials.

Features of the tool

Building regulations provide clear dimensions for fines, which are designed for certain materials of building walls and should not weaken their strength. This is especially true for walls mounted from reinforced concrete panels, for which the depth of the groove is strictly limited. Violation of these standards may weaken their strength and lead to undesirable consequences in the future. For example, in old panel houses (Khrushchev-era buildings), it is generally prohibited to use hammer drills, but working with a wall chaser is allowed, since no negative consequences are expected from this.

Compared to a grinder, the speed of cutting a groove with a wall chaser increases almost 2-3 times. The grooves themselves are smooth, identical in width, and what is very important, the specified depth is strictly observed. At the same time, during its operation, a minimal amount of dust is generated in the room, and the work is much safer for the performer.

Description of equipment

A wall chaser is used in construction to cut grooves of both different depths and widths. Particular attention should be paid to the description of this equipment:

1. Almost all models of wall chasers are equipped with two cutting wheels with diamond or Pobedit coating on the cutting edges. The distance between the cutting wheels can be adjusted according to the width of the required groove, so that the groove is cut in one pass. In this case, the cuts are smooth and of the same depth, which will subsequently be reflected in saving time and material when sealing them.
2. When using a grinder to cut one channel, you will have to perform two approaches. In this case, the slots will be of varying depths and, naturally, with some deviations from a straight line.
3. The wall chaser has a base in the form of a platform on which a slide with several guide rollers (2-4 pcs.) is mounted. With the help of the platform, the depth of the slots is adjusted and the stability of the wall chaser is ensured during operation, which is almost impossible to achieve when working with an angle grinder.
4. The slide ensures easy sliding of the tool along the surface of the wall while cutting a channel for making a fine. When the tool is removed from the cut grooves, the slides are lowered, covering the cutting discs. This ensures the safety of the worker who could be cut by the spinning discs.
5. Wall chasers are equipped with special casings to collect dust, which is generated in large quantities during cutting concrete, brick or other materials. The casing has a special pipe to which a hose from a vacuum cleaner or a filter is connected that collects dust and small fragments from the building material being cut.

Benefits of use

Using a wall chaser for cutting grooves has a number of advantages, including:

1. The result is a neat and accurate, according to calculations, depth and width of the groove. Thanks to this, a minimal amount of plaster or putty is used.
2. Using two disks, two cuts are made simultaneously in one pass, which significantly saves time and reduces the labor intensity of the work process.
3. Thanks to the ability to connect a vacuum cleaner and the presence of a casing, there is virtually no dust in the room during operation. The noise level created by a wall chaser is several times lower than a working hammer drill.
4. When cutting channels (fines), there is completely no vibration - which is very important for old panel buildings.
5. This method of preparing channels for hidden laying of pipes and electrical wires turns the long and labor-intensive process of gating into a comfortable and time-consuming job.

Stages of cutting fines

Before starting work, markings are made on the wall to cut out the grooves, and on the tool, using a platform, the cutting depth of the grooves is set. To do this, the platform is positioned in such a way that the cutting parts of the disks extend beyond its limits to a distance calculated for the depth of the groove.

When selecting the width of cutting channels (for fines), the distance between the disks is regulated by a set of washers or bushings, which are placed on the tool axis between the disks.

After this, a flexible hose from the vacuum cleaner is connected to the casing pipe, and the tool is connected to an electrical outlet.

The wall chaser is driven by an electric motor, which is powered by a 220 V mains voltage, and the operating principle itself is quite simple. The tool is pressed and guided along the surface of the wall, simultaneously cutting out two even grooves of equal depth. Cutting is carried out simultaneously with two disks, the cutting part of which consists of diamond coating or pobedit brazing.

In this case, the tool does not sample the channel itself. Other tools are used for this operation.

Once the slots are completed, the material between the slots is removed with a hammer drill or a metal chisel and hammer. When performing the same work with a regular grinder, it will take several times longer to complete a similar procedure of the same volume.

Professional wall chasers equipped with industrial vacuum cleaners are very expensive and are usually purchased by enterprises that are constantly engaged in construction work. For one-time work , naturally, purchasing such equipment will be quite expensive. In this case, the best option would be to rent this tool or make a wall chaser cover for an angle grinder with your own hands.

What to make a protective dust cover for an angle grinder from

The manufacture of a protective casing involves the use of such types of materials as a plastic canister, aluminum pans, chipboard, plywood, laminate, board, stainless sheets, etc. You can choose any material that is available on the farm. This eliminates the need to buy an attachment, since making it with your own hands is very easy and simple.

The main condition is to ensure sufficient strength of the finished attachment for the grinder. The casing must withstand the impact of small particles of concrete flying out during work. To make the casing, there is no need to resort to the use of auxiliary tools, such as welding, since a nozzle can be quickly made from a plastic canister. An example of such a nozzle is shown in the photo below.

The manufacture of such a device requires a minimum of time. A homemade wall chaser from an angle grinder can be made quickly and easily, using an arsenal of improvised tools. If you use materials made of aluminum or wood, then when working on the manufacture of nozzles you will need self-tapping screws, and when using steel you cannot do without a welding machine. Let's consider the principle of making a wall chaser attachment for an angle grinder with your own hands:

1. For production you will need leftovers from chipboard or fiberboard. In addition, even plywood will do, so we use any sheet material that is available
2. Two side bases are cut out of chipboard according to the appropriate shape. The shapes of these bases depend on the size of the available tool
3. To avoid having to select a shape, it is recommended to first make a drawing on paper and then transfer it to cardboard. Make a template from cardboard, eliminating all the shortcomings
4. Based on the template, make a cover using chipboard
5. Drill a hole of the appropriate diameter on one side of the chipboard base. Use this hole to secure the finished attachment to the power tool.
6. To connect chipboard when making the nozzle, you can use self-tapping screws or special furniture fasteners of appropriate length

The photo below shows the resulting case for the grinder. Such a cover is easy to make, but its drawback is the absence of a hole for connecting a hose. A sleeve of the appropriate diameter and length, which must be mounted in the upper part of the structure, will help eliminate this drawback. A hose from a vacuum cleaner should be connected to the protrusion of the sleeve.

This is interesting! When using a vacuum cleaner to suck up debris and concrete chips, it is recommended to use industrial or construction vacuum cleaners, but not household ones. They are not designed for such things, so in the end they can quickly fail.

The process of making a nozzle is not difficult, and the quality of the final device depends more on the ingenuity and imagination of the master. You can make not just a simple case for an angle grinder with your own hands, but also an adjustable one. The principle of manufacturing an adjustable protective casing is that you need to make an additional moving part. Due to this moving part, the required size of the protrusion of the cutting discs on the grinder will be selected.

In a similar way, you can make a nozzle with an adjustable part from chipboard and other materials.

The nuances of making a protective dust cover

When making a protective screen, it is possible to adjust the cutting depth. The case consists of a hinged support plate and an attachment, which is attached to the body of the angle grinder.

Cotter pins or locking rings are used to secure the axle. A semicircular plate with a slot for a bolt is provided on the base, and 1 or 2 springs are installed on the rear edge.

Some craftsmen attach plastic rollers to the bottom of the sole, which reduce the effort when moving the tool along a concrete or plastered surface.

What recommendations and tips to consider when gating

You can begin the procedure for preparing grooves indoors immediately after making your homemade product. When punching a groove, one important nuance must be taken into account - the work should be carried out in a room where the location of the electrical wiring is previously known. If a live wire is encountered along the path of the tool, the result of such an encounter can be fatal for the master.

It is necessary to carry out gating work with both a conventional wall chaser and an angle grinder, taking into account the following tips and recommendations:

1. Procedures can be carried out in vertical or horizontal directions
2. It is possible to ditch at an angle in extremely rare cases when it is necessary to bypass a decorative element or communications
3. Horizontal grooves must be carried out exclusively at a distance of up to 15 cm from the floor slab
4. Vertical grooves must be located at a minimum distance from doors and windows of 10 cm
5. When carrying out work, it is important to take into account the depth of the groove. It is necessary to select the depth depending on the type of communications that are planned to be laid in the groove, as well as the thickness of the wall itself. If this wall is load-bearing and is external, then the depth of the groove should not be more than 3 cm
6. The width of the groove is also selected depending on the technological task, but it is not recommended to exceed the permissible limit of 2.5-3 cm

After laying communications, the groove should be sealed with cement mortar. The location of the groove should be leveled with the plaster of the wall. It is recommended to carry out gating work at the construction and repair stage before plastering the walls.

It is not at all difficult to make a wall chaser for concrete from an angle grinder, and if you set yourself such a goal, then everyone can achieve it. When drawing a conclusion about the work done, it should be noted that when chipping, you need to take breaks to allow the power tool to cool down. If the cover does not have a connector for connecting a vacuum cleaner, then work must be carried out in a respirator. Glasses must be worn in any case, as various small particles can get into the eye.

Depending on the type of material that is being cut, it is necessary to select the appropriate speed of movement of the tool. If you come across reinforcement in a concrete wall on the way, it is recommended to saw it with an abrasive wheel. It is necessary to use a wall chaser on wood with extreme caution, not forgetting about the backlash.

A simple wall chaser for aerated concrete made from boards and self-tapping screws

Let's consider another device that will be useful to those who build a house from aerated concrete.

Construction reinforcement is used to reinforce the masonry, but since the seam between the blocks is quite thin, the reinforcement is placed in special grooves.

These grooves are cut along a row of gas blocks along the perimeter of the “box” of the house.

For this, a factory mechanical wall chaser is usually used. But you can get by with a homemade tool, which is in no way inferior to its factory counterpart.

To assemble a manual wall chaser for aerated concrete with your own hands

, you will need two boards and screws.

We choose more or less even boards (or you can use plywood), saw off two blanks of a suitable size, and then fasten them with screws at an angle of 90 degrees.

Next, we saw off two wooden blocks and screw them to the top of the wall chaser - they will act as handles.

At a distance of 7-8 cm from the edge of the top board, you will need to tighten 5 screws. They will serve as cutters for aerated concrete

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The side guide board allows you to cut a groove strictly parallel to the wall.

The only disadvantage of this homemade tool is that when working from the inside of the wall, you cannot close the corners - you have to “pick” them manually.

But, given the simplicity and low cost of the design, you can turn a blind eye to this drawback.

Read step-by-step instructions on how to make a wall chaser for aerated concrete with your own hands

, you can watch the author’s video below. The idea was shared by the author of the YouTube channel MY GALAXY.