Brick Cutting Disc for Angle Grinder

Cutting discs

The most common task performed with an angle grinder is cutting various materials. The choice of tool material also depends on what material needs to be cut.

  • Metal cutting. The metal cutting disc is made from crystalline alumina corundum, as well as from a synthetic corundum called fused alumina. The main color of wheels for cutting metals is blue.
  • Cutting stone and concrete. For cutting stone, you should choose a disc made of another abrasive material. silicon carbide. This abrasive easily cuts white brick (silicate) and slate. But to cut red brick, some types of concrete or ceramic tiles, this circle material will not work. Stone discs are available in green.
  • Cutting ceramic tiles, red brick, porcelain stoneware and concrete. For these purposes, a diamond disc is already used. This nozzle is made of metal, an abrasive mass with diamond chips is applied to the cutting edge. The illustration above shows a segmented saw blade designed for dry cutting of material. All-metal discs require water cooling during operation.
  • Wood cutting. Although there are sawing wheels for wood on the market that are no different from circular saw blades, it is best to avoid using them for safety reasons. When working with such a tool, the user often receives serious injuries due to jamming, bouncing, accidental slipping of the tool, etc.
  • Therefore, if you are still going to use a saw blade for wood, then you should adhere to safety measures. The angle grinder must be fitted with a protective cover and handle, and the user must wear a face shield or goggles. In addition, you must not use this tool to cut materials that are not intended for it.

    The safest are considered to be discs for wood, along the end of which a chain from a chainsaw is installed. In the event of a tool jam, the chain stays in place and the disc rotates idle, reducing the likelihood of injury to the user.

    Using a puncher

    Some owners of grinders, in a situation where the clamping nut is jammed, install a “chisel” or “jackhammer” nozzle into the hammer drill, insert it into the hole of the flange at an angle and turn on the breaker hammer mode without rotation. Accordingly, the stop button must be pressed. Just a couple of gentle clicks with a perforator are enough (so as not to break the shaft retainer), and the nut will begin to turn.


    If it is necessary to remove a layer of paint or other application, as well as rust from any surface, use a brush. They are disc-shaped or in the form of a bowl with built-in metal wire.

    The wire in these attachments can be twisted or loose. Its thickness can also be different. The thicker the wire, the coarser the roughing is used for the roughing disc or bowl, and vice versa.

    brick, cutting, disc, angle

    Selecting and Replacing Angle Grinder Discs

    Angle grinder (angle grinder), in common people called “angle grinder”, is widely used at construction sites and in everyday life during repairs. It can be used to carry out many different technological processes. In order to choose the right tool for performing a certain type of work, you need to familiarize yourself with what kind of discs and attachments for an angle grinder are. The tool for this device is selected by size and purpose.


    To sharpen the tool, grinding machines (sharpeners) are usually used. But if you do not have the latter, but you have an angle grinder, then you can purchase a sharpening (grinding) wheel for it, with which you can easily sharpen almost any cutting tool.

    The main difference between sharpening wheels and cut-off wheels is their thickness (at least 5 mm).


    Grinding discs and attachments are used for grinding and polishing various surfaces (metal, wood, plastic and others). Often a flap type grinding wheel is used for grinding. It consists of many “petals” made of sandpaper. The grit of the sandpaper can be selected based on the required type of processing (finishing or roughing).,

    Also, the sandpaper can be attached to the nozzle with Velcro. Such a tool is screwed onto the spindle of an angle grinder.

    For surface polishing, special wheels and attachments are produced that look like felt pillows or fabric discs.

    How to properly change a disc on an angle grinder

    Since the wheels for an angle grinder are consumable, sooner or later they have to be changed. They are attached to the spindle of the angle grinder using a clamping flange (nut) with an M14 thread. To unscrew it, a special open-end wrench with pins on one side must go to the angle grinder.

    So, to replace the tool on an angle grinder, follow these steps.

    • De-energize the device by unplugging the power plug.
    • Lock the spindle of the angle grinder using the button located on the front of the housing. When the button is pressed, the stopper enters the hole of the disk installed in the gearbox, which fixes the spindle in a stationary position.
    • Insert the pins of the key into the holes on the pressure flange.
    • While holding the latch with one hand, turn the wrench to the left (counterclockwise) with the other hand until the nut comes loose. Then it can be unscrewed without a key and removed from the shaft. In this case, the spindle of the angle grinder rotates clockwise. But in which direction to unscrew the nut if your apparatus rotates the shaft counterclockwise? Remember: the clamping flange should always be unscrewed in the direction opposite to the rotation of the shaft.
    • Now you can change the tool after removing the old one. If you notice that dirt has accumulated inside the casing, then you should remove the lower flange and use a steel brush to remove dirt from all surfaces.
  • Screw the flange onto the shaft by hand. Tighten the nut until you can no longer turn it without a key. After that, holding the stopper, tighten this nut with a wrench, but no more than a quarter of a turn, otherwise the disc will begin to deform.
  • After carrying out the above steps, the replacement of the tool is considered complete.

    Recommendations for sawing paving slabs and curbs

    Paving slabs are a popular material that allows you to beautifully and tastefully arrange paths in the yard or garden. In addition to its attractive appearance, the material is distinguished by its strength, durability, and a wide range. On the sides of the paths, in most cases, a curbstone will be laid, which in its characteristics is similar to the material of the sidewalk.

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    Often, when laying paths, tiles and borders have to be trimmed to the desired size. For these purposes, various tools are used, one of which is an angle grinder. For efficient sawing, it is recommended to use this power tool with a circle with a diameter of more than 230 mm and a power value equal to or greater than 2 kW. All work is done with a diamond disc.

    The cutting of paving slabs and curbs with an angle grinder itself is performed in the same way as when sawing a brick.

    • First, markings are applied to the surface of the materials to be sawn using a marker or chalk.
    • Check the accuracy of the marking lines by applying a tile or border to the installation site.
    • When the size and shape coincide, the construction material is cut without strong pressure on the used power tool.

    If the sections contain defects after cutting, then they are eliminated using suitable tools (for example, a hacksaw for metal, a chisel, a file). The circle of the working tool should rotate so that the dust flew in the opposite direction from the working side. At the same time, he must hold the working power tool with both hands, being behind or on the side of it.

    The quality of the result and the number of tile cuts depends on the accuracy of the initial marking.

    Tiles cut into fragments of the required size should be set aside separately so that dust does not fall on it. For the convenience of subsequent laying, the pieces can be numbered. The still uncut material should be covered with dust, because then it is quite problematic to remove it from the surface of the tile.

    Wood cutting

    The special disc for wood has side teeth that increase the size of the cut. In any case, you need to cut the wood carefully. The thickness of the boards should not exceed 4 cm.

    Cutting wood with an angle grinder is a very unsafe activity and can easily get injured. At the same time, it is strictly forbidden to use circles from a circular saw, because they are designed to work at a speed that does not exceed 3000 rpm. If jamming occurs, then such circles can collapse. This is due to the fact that they are made from hard, but relatively brittle steel. Also, do not use coarse-toothed bits, as the chances of the teeth catching on and causing the wheel to jam increases. In this case, the likelihood of pulling out the power tool from the hands increases many times.

    If, despite the increased danger, it is decided to saw the boards with an angle grinder, then you must adhere to the following recommendations.

      If it is possible to adjust the number of revolutions of the disk, then it is recommended to set the minimum possible number.

  • During sawing, the tool must be kept in one (working) plane, because distortions can easily cause traumatic consequences.
  • The locking button should not be clamped after turning on the power tool, since it is more difficult to turn it off if necessary.
  • The wood to be sawn must be dry, not dried (raw) sawn timber should be cut.
  • With relatively long lengths of boards, it is better to work with a partner.
  • Required to comply with safety regulations.
  • The best option is to work with boards that have the same thickness.
  • The material to be cut must be free of foreign matter, for example, nails, screws, bolts, wire.
  • For the best possible safety of the work process, the angle grinder should be used as a circular saw, fixed in a stationary (stationary) position. In this case, the tool is fixed on a bed with guides. During sawing, the working material is fed in the same way as on a circular.

    The main disadvantage of this method of cutting sawn timber is the relative complexity of its implementation from a technical point of view.

    Using an angle grinder

    Sometimes, in the process of working on a brick, minor damages and scratches are formed. You can correct these shortcomings without using a grinding machine. an angle grinder will do. It is recommended to use an angle grinder with a power of up to 1.5 kW, equipped with special attachments. Sanding better on wet surfaces.

    Clinker brick

    In the manufacture of clinker bricks, special refractory clay is used, so it is much stronger and harder. Due to these qualities, as well as the variety of textures and colors, it is used for paving paths and courtyards, facing facades and basements of buildings. It is necessary to cut such material on special machines using water cooling.

    Varieties of bricks

    Brick has been used in construction since ancient times. It is distinguished by its enviable strength and durability. There are a fairly large number of types of bricks, depending on the material from which it is made, as well as on what it is planned to build from it (walls, furnaces, etc.).

    Using tile cutters-tongs

    Using tongs, you can give a brick an arbitrary curly shape: bevel, round, etc. The tool is suitable for delicate and painstaking work.

    General instructions

    Any work on cutting bricks is accompanied by the emission of a large amount of dust into the air of the working area. Wear protective goggles and a respirator even when working with water supply. Artificial wetting with the help of improvised means when using an angle grinder threatens damage to the tool and electric shock.

    Brick cutting with an angle grinder

    Angle grinders are called grinders. This tool is traumatic, therefore, it requires compliance with safety regulations and the presence of personal protective equipment. glasses and a robes.

    A special abrasive disc must be selected before starting cutting.

    How to Cut Pavers and Bricks with Portable Angle Grinder and Diamond Masonry Blades.

    • 230 angle grinder with disc 230222.5 mm;
    • 125 angle grinder with disc 125 222.5 mm.

    No other discs can do the job.

    For cutting bricks with an angle grinder, it is better to use diamond discs.

    The first number in the designation of the circle is its diameter (230 and 125, respectively), the second is the diameter of the mounting hole (22), and the third is the kerf width (the width of the circle is 2.5). Wheels should be selected according to the grain size: the higher, the better the cut. The hardness of the wheel affects its service life, working speed and revolutions. The power of the angle grinder itself must be at least 2 kW.

    When the required disk is installed, the tool is checked at idle start for a minute. After checking, you can start cutting the workpieces.

    Brick cutting is carried out strictly at right angles. First, you should raise the brick above floor level and move it away from vertical surfaces so as not to damage the wall. The first cut is made with an angle grinder with a small diameter for the entire intended length of the cut. In this case, it is not necessary to make a cut to the full possible depth of an angle grinder. you can only make a cut.

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    Make the first cut smoothly by lowering the angle grinder slowly. The disc can have a play of a few millimeters, so a jolt is possible when the rotating disc is lowered sharply. After that, the workpiece is split or the tool is knocked out of the hands.

    The final cutting of the material is carried out with an angle grinder with a diameter of 230 mm after the first cut.

    Cutting bricks with an angle grinder should be done outdoors, as this process is very dusty. To prevent damage to the working circle, another brick is placed under the object to be sawn. so the disc will enter the homogeneous material and wear less.

    Do not tilt the angle grinder while rotating.

    It is important to remember that the cutting width increases due to the friction of the circle against the edge up to 3 mm, therefore, if you need an accurate cut, you should first mark the workpiece.

    angle grinder

    How to cut a brick if you need a small amount of non-standard stones?

    For this purpose, an angle grinder is best suited, which is popularly called an angle grinder. Unlike the equipment, which will be discussed below, almost every home craftsman has such a tool.

    How to Easily Cut Bricks With a Portable Angle Grinder

    Council. We recommend using an angle grinder with a power of approx. 2 kW. A less powerful tool may not do the job, and a tool that is too powerful may be hard to work.

    The brick cutting disc to be installed on the machine can be of two types:

      Abrasive. inexpensive, but also not very practical. It “wears off” quickly and can deform or crack during the sawing process, which will affect the quality of the cut and the safety of the master.

    Abrasive cut-off wheel

    Diamond. The blade is made of solid diamond-coated steel, very reliable and durable. It is more suitable for this operation, since it easily cuts bricks, making an even and neat cut. But its price is much higher than abrasive.

    In any case, the optimal disc diameter is 23 cm. A smaller circle will not cut through the brick to its full thickness, so it will have to be turned over in the process. And too big circles are not so convenient to work.

    Diamond discs, in turn, differ in the type of edge and are:

    • Solid hem. The cheapest of the analogues, they give a flat surface on the cut. But they heat up during operation and wear out faster.
    • With scalloped turbo edge. The teeth on it are arranged in a spiral, so dust and other waste is well removed from the working area. These blades can be used for dry and wet cutting and have the longest life and best performance.
    • With segmented edge. On such discs, cuts are made along the edge, dividing the working plane into separate sections. The incision area is constantly ventilated when working with such a disc, therefore it heats up more slowly. But with wet cutting, there is a risk of waste sticking in the slots, so it is used primarily for dry cutting.

    How to cut a brick and which disc to use is up to you. Now you know about the features of any cutting attachment.

    You just need to remember that you need to cut not exactly along the marking mowing line, but stepping back a little from it so that the marking remains “in the body” of the part you need. Otherwise, due to the backlash of the tool and the thickness of the cutting part of the disk, it will turn out to be less than the required size.

    Keeping the angle grinder suspended is difficult to make a high-quality cut. It is better to fix both it and the brick in the clamping frame. With its help, you can make a neat cut not only along or across the brick, but also at any angle.

    Dedicated angle grinder bed makes work easier

    It is very important not to forget about safety precautions when performing such work.

    The instruction requires the following points:

    The tool must be held with both hands to prevent it from being pulled out of your hands and injuring yourself or those around you on kickback. This requirement will also provide a higher cutting accuracy.

    A stable position and correct grip of the tool are very important during work

    • The electrical supply cable should be located as far as possible from the working area in order to avoid cutting or winding it around a disc with all the ensuing negative consequences.
    • Release the angle grinder from your hands and lay it on the ground or other surface only after the disc rotation has completely stopped.
    • The cutting wheel must be covered with a protective cover. You cannot use an angle grinder without a cover.
    brick, cutting, disc, angle

    Council. To reduce dust formation, water can be poured into the work area when cutting bricks.

    Brick Cutting Machine

    Special machines for cutting bricks are expensive; it makes no sense to buy them for a one-time job. This sophisticated equipment is designed for those whose activities are related to masonry work.

    It consists of the following nodes and elements:

    • Metal frame;
    • Power unit with electric motor and diamond wheel;
    • Fixation system for brick or stone;
    • Most models are also equipped with a water supply to the cutting area.

    Brick cutting machine DAKAR PLUS

    Such equipment allows you to quickly and accurately perform cutting of any complexity. At the same time, the cutting process is always visible to the master, he can control it.

    And the irrigation system minimizes the amount of brick dust emitted into the air, making work as comfortable and safe as possible.

    Which angle grinder blade / disk for concrete, plastic, tiles and metal

    How to cut a brick with this machine?

    • It is necessary to apply markings on it and install it in the working area, fixing it in the desired position;
    • The cutting part of the tool is lowered to the working area and oriented to the marking;
    • Then the engine is turned on and the rotation speed is adjusted, after which the cutting is carried out. In the photo. the process of cutting a brick on a machine

    Sometimes it becomes necessary not to cut individual bricks, but to cut various niches, door and window openings in the brickwork. In such cases, the most effective tool will be a gas cutter, with the help of which diamond cutting of brick walls is carried out.

    Having a large weight and considerable dimensions, it is not convenient for piece work, but is indispensable for sawing masonry and dismantling work.

    A gas saw is essentially a circular saw with a gasoline engine, the cutting tool in which can be a disc or a diamond-coated chain. A saw with a disc outwardly resembles a large angle grinder, and with a chain. a chainsaw.

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    This equipment handles the most demanding tasks, including cutting thick exterior walls. And the forced water supply to the working area eliminates the formation of dust.

    Working with an angle grinder

    This tool is used not only in everyday life, but also by builders in small-scale production. This choice is due to profitability, that is, there is no need to purchase special machines if they are not 100% involved.

    To carry out the work, you will need the following tools and accessories:

    Using a petrol saw

    This tool has a powerful gasoline engine that allows you to cut stone blocks of any thickness.

    With a gas saw, you can cut not only piece products, but also cut a brick wall.

    The tool resembles an angle grinder in shape, only of increased size. As a cutting element for petrol cutters, diamond-coated discs or chains are used. The increased power of the cutter allows you to withstand heavy loads.

    working with a disc is carried out using the same technology as when using an angle grinder. And replacing it with a chain ensures cutting with a tool of any wall thickness.

    The advantage of gasoline cutters is its compactness compared to stone cutting machines. The carver can perform work in confined spaces. Diamond cutting of brick walls is done without the formation of dust, because the equipment is equipped with a water supply to the cut point.

    Obtaining a perfectly even and accurate opening is provided by diamond cutting of brick walls, with a wall thickness of 10–20 cm.

    Carrying out work on a stone cutting machine

    The use of installations in isolated cases is too expensive. They are used only mainly in large-scale construction. Equipment for cutting stones consists of the following units:

    • metal frame;
    • drive unit;
    • cutting block with diamond disc;
    • water supply system to the cut area;
    • construction of fastening and positioning of blocks;

    The principle of operation of all stone cutting machines is of the same type and has the following sequence:

    • performing markup;
    • fixing the stone in the required position;
    • transfer of the cutting head to the working position;
    • starting and setting the required number of revolutions;
    • turning on the water supply;
    • smooth movement of the cutting element along the marked cut mowing line;
    • after the end of the work, the installation is turned off and the head is removed;

    During the cutting process, certain safety requirements must be observed:

    • the use of only types of discs regulated by the manufacturer;
    • the connection to the electrical network must be grounded;
    • it is imperative to use personal protective equipment in work;
    • high performance;
    • high-quality cut;
    • elimination of dust, due to the water supply system;
    • safe work;

    All the advantageous qualities of stone cutting machines are overshadowed by only one factor. their high cost.

    Most often, home craftsmen use an angle grinder to cut bricks. It will be useful for them to watch the video in this article on how to do it right.

    Correct hand cutting

    Before the advent of the electric tool, bricklayers had to chop bricks with hand tools. The felling was carried out with picks or a trowel.

    In order to achieve smooth surfaces of the material as a result of processing, spall grooves should be made on all edges. This is done by inflicting light weak blows with a small pick. When the groove is ready, a strong blow is struck with a pickaxe. It is important to keep the tool strictly vertical to avoid splitting.

    • rough edges of the chip, which require additional grinding;
    • the duration of the process (30-40 minutes);
    • imperfect cleavage accuracy;
    • impossibility to split a brick with a given angle for a curly finish.

    Modern craftsmen prefer to avoid hand cutting.

    For grinding

    A special disc called “petals” is designed for grinding various surfaces. The nozzle got its name because of the thin pieces of sandpaper that are connected together like a flower. The grain size is different. the choice is made depending on the material that needs to be processed.

    Another type of sanding discs is with Velcro. Pieces of sandpaper of the necessary fragmentation are simply glued to them.

    Attachments for angle grinder

    When buying, it is important to consider the diameter of the nozzle. There are angle grinders with standard wheel sizes: 115, 125, 150, 180, 230 mm. Do not put a large blank on an angle grinder with a smaller diameter of the working area.

    Cutting discs

    Most often, an angle grinder is used for cutting various materials. For example, to cut pipes or profiles. Therefore, cutting wheels are the most common option for an angle grinder.

    There are several types of such accessories:

    • For metal. The tips are made of corundum, the thickness varies from 1 to 3.2 mm. Wheels are produced in blue and are marked with the mark “steel” in English.
    • Stone. It can be used to easily cut concrete, white sand-lime brick or slate. Made of silicon carbide and marked with the word “stone” in English. It is worth knowing that such a disc is not suitable for cutting fragile ceramic tiles, durable red brick and concrete.
    • Diamond disc. Extremely sharp nozzle that can handle dense concrete and porcelain stoneware. There are blades for dry cutting and water-cooled work.

    Sharpening attachments

    These circles are rarely used, as they are not very comfortable. But in the absence of an alternative, grinding discs come in handy. Thickness. not less than 5 mm. It is easy to insert them into place, just screw them onto the washer. the angle grinder is ready for sharpening the working tool.

    Angle Grinder Attachments

    angle grinder is a versatile tool. Depending on the bit chosen, it cuts, saws, grinds, peels, sharpens and performs other work. The main thing is to choose circles that are suitable in diameter. Otherwise, any operation with the angle grinder will become dangerous to the operator and others.

    Polishing Wheels

    This attachment is intended for the final treatment of a product or surface. Outwardly, they look like puffy circles covered with felt or dense fabric. They are usually used in conjunction with surface polishing compounds.

    Saw Bits

    This type of circle is very dangerous. When working with it, careful observance of safety precautions is required. It is not uncommon for a disc to break off and bounce off an angle grinder. This could result in serious injury to the operator or others.

    Nozzles with a chain along the contour of the disc are less dangerous. In the event of a malfunction, it stops while the disc continues to spin in place. In this case, no rebound occurs. Man working with angle grinder protected.

    Ripping discs

    Volumetric bowl-shaped brushes with rigid metal antennae. They are indispensable when it is necessary to remove an old coat of paint. In addition, they can be used to brush wood.