How To Use Grinding Wheel For Angle Grinder

How to choose a wheel for an angle grinder: grinding, polishing, roller cutter, roughing, abrasive

Among construction tools, the angle grinder stands out for its versatility. I changed the nozzle. and the cutting tool turned into a grinding one. Any type of work in which it is necessary to use rotary motion is possible. Let’s figure out the range and purpose of one category of attachments. grinding wheels.

Sharpening discs and roughing bits

This category of wheels and attachments can be divided into three parts:

  • grinding abrasive discs;
  • twisted cutters;
  • rough diamond.

Sharpening abrasives are used for sharpening tools, cleaning welding spots. They are quite thick (from 5 mm), there is a depression on the inner surface. An example is fiber discs, they clean the welding places from scale, remove oxidation traces well. Diamond roughing bits only work with stone or concrete.

Twisted cutters, they are also metal brushes or wire brushes differ in size and shape, maximum rotation speed. Most often they are used to remove traces of metal oxidation, wood brushing.

Grinding and Polishing Wheels

Grinding performs the following types of work:

  • grinding;
  • cleaning;
  • peeling;
  • elimination of rust;
  • polishing.

This is the most numerous group of attachments that can be:

  • with replaceable emery wheels;
  • with a spongy surface;
  • felt;
  • tissue.

Most often, to work on such wheels, a grinding paste or liquid with fine abrasive particles is required. Initial grinding of metal is carried out on wheels with a low-abrasive surface, finishing. on felt, fabric. The various surfaces of the grinding wheels allow you to bring the processed material to any degree of smoothness, be it metal or wood. They are so convenient that they are used in car services for polishing car bodies.

grinding, wheel, angle, grinder

The non-abrasive category of grinding wheels includes:

  • cup;
  • petal;
  • fiber;
  • brush cord.

Petal attachments are designed for wood processing, for example, peeling old coatings.

Cup wheels are used when working on concrete and stone, less often on metal. A low-power angle grinder will not cope with such a tool and will quickly burn out. Therefore, they can only be installed on powerful angle grinders. In addition, the curved shape allows you to get close to hard-to-reach areas. Grinding is done more accurately, as the fixing nut does not protrude.

Types of attachments

Angle grinder attachments differ in shape, thickness, diameter, material of manufacture and are divided into four groups:

  • detachable;
  • polishing and grinding;
  • for sharpening;
  • peeling nozzles.

The most extensive and widely used group are cut-off wheels. Most often, consumables are purchased for working on wood, stone, metal, diamond wheels. The diameter of the tool can be from 115 to 230 mm, the thickness is 1. 3.2 mm, the larger the diameter, the thicker the disc. Special abrasives are applied to the cutting surface of the stone. It is advisable to use discs for wood and metal in conjunction with a device for a stationary installation of an angle grinder, otherwise the work may cost several fingers. It is preferable to work with fine-toothed discs.

Diamond cut any materials, usually used when laying porcelain stoneware, tiles, reinforced concrete. The edge of the diamond wheel can be torn or solid, and the size of the diamond particles: larger or smaller.

The packaging for each disc contains recommendations for use. Although from a financial point of view it is more profitable to purchase a universal tool, its performance will be lower than that of a specialized.

Grinding wheel selection

When choosing a wheel for an angle grinder, the following points are important:

  • the diameter of the disc must correspond to the maximum allowable for the specific tool. Otherwise, the consumable may collapse due to exceeding the maximum permissible rotation speed. The power of the tool may not be sufficient to rotate a large circle. When using a large diameter, it is necessary to remove the protective cover, and this is dangerous to the health of the worker;
  • processed material: it is advisable to prefer specialized discs to universal ones, for example, for wood;
  • maximum permissible linear speed: information about it is printed on the packaging or the side surface of the consumable. The operating mode of the angle grinder is selected depending on this indicator.

Review and testing of the grinding disc, making a felt disc with your own hands:

Which angle grinder to choose

If you are faced with the question of how to work an angle grinder correctly, then you should know that not only attachments are different, but also angle grinders. They are presented in different classes, including:

  • industrial;
  • professional;
  • domestic.

How to Use an Angle Grinder: Angle Grinder Attachments

The latter option is suitable for use for a limited time every day. A professional angle grinder can work several hours every day. As for industrial equipment, it is a device that works almost tirelessly. The instruments are also different in appearance. Thus, the body can be supplemented with one or two handles as well as vibration-absorbing handles.

Basic rules for cutting

When cutting a workpiece, it is important to make sure that you follow the basic rules. the cutting line should pass by the person, but not rest against him. If the disc is seized, the jet propulsion of the equipment will bypass the operator. It is important to provide protection with a shroud. It should be located between the employee and the circle.

There is no need to apply excessive pressure to the tool. The unit will be able to cope with tasks using its own weight. Whereas overloads will cause the circle to skew. The inclusion of the angle grinder when the disc is in the profile of the workpiece is excluded. You should start cutting the profile from the place where the cross-section is the smallest.

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It is important to remember that when cutting tiles, concrete and stone, a lot of dust will be generated. Respiratory organs should be protected from it. Some manufacturers produce hoods with a nozzle for a vacuum cleaner. You can also suppress dust with water, directing the jet into the cut. If you need to work on opening the wall, you must be prepared for the fact that reinforcement, pipe or cable can get under the circle. This will certainly cause kickback. Stay clear of the cutter line to avoid injury.

Operational Safety Angle Grinder

Before starting the workflow, you must prepare the tool. For this, a circle is selected and installed. The motor has a certain power, it provides for the need to select a circle of certain sizes. The smaller the circle, the higher the rotation speed it can support. If the wheel is used incorrectly, it will cause wear on the equipment and deformation of the nozzles.

If you are thinking about the question of how to properly operate an angle grinder to avoid injury, then you should know that discs that are larger than those for which the unit is designed should not be installed on the tool. The attachments must not be deformed. If cracks or potholes appear on the circle, then you should get rid of them. You should not use those circles that have deviations from the original shape.

What is an angle grinder for?

When you look at modern angle grinders, you will notice that they are able to cope with many tasks, including:

  • polishing;
  • grinding;
  • cutting glass, tiles, stone, plywood, concrete, brick and metal.

A specific abrasive tool should be used for each type of work and material.

How to work an angle grinder: step by step instructions

Knowing how to properly operate an angle grinder can help you reach your goals and save your life and health. This tool does not tolerate neglect of safety precautions. Manufacturers emphasize that the operation of the equipment must be accompanied by adherence to the instructions.

An angle grinder is much more functional today than a few years ago, when the tool could only be useful for grinding work. Today these devices are indispensable in metalworking and construction. Outwardly, the angle grinder looks unpretentious, it has a cylindrical body, on one side of which there is a handle, and on the other, a mount for nozzles. It is the attachments that make this unit multifunctional. They are fixed to the spindle, while the discs are additionally secured with a clamping nut and flange. This measure is mandatory when working with the described tool.

Rules and guidelines

After fastening the wheel, the tool should be started and checked in idle mode. Within 30 seconds, the equipment is run at maximum speed. If you did not notice any extraneous sounds and vibrations, and the protective cover does not touch the disc, then you can start work.

Quite often, novice home craftsmen wonder how to work an angle grinder correctly. Before starting manipulations, the operator should prepare himself, for this you need to wear:

  • special clothing;
  • safety glasses or mask;
  • respirator;
  • thick gloves.

The operator needs to remove all jewelry, such as watches and bracelets, because they can be wound around a circle. Do not start work if you are tired or drunk. Eliminated the use of saw blades for wood when working with an angle grinder.

Fire safety and fastening parts

The operator needs to make sure that no one is in the cutting plane. Until the disc has come to a complete stop, do not let go of the tool. You should not touch the rig before it cools down. The working area should be free of flammable objects, namely:

  • solvents;
  • fuel;
  • ropes;
  • rags.

If you are interested in the question of how to properly operate an angle grinder, then you should think about securely fixing parts. Everything that is processed and cut must be fixed. As an exception, there are elements that will remain motionless under the influence of their own weight; this should include slabs and stones. The part can be clamped in a vice. If this is not possible, you should use the help of a partner who will fix the workpiece or pipe with an adjustable wrench. It is forbidden to hold workpieces in your hands.

Cutting discs for concrete and their design differences

Regardless of the method of applying the diamond working layer, concrete discs are structurally divided into two types:

Segmented disc for concrete

The cutting surface of such circles is divided into segments, between which there are technological slots. A hole can be located on the inner side of the groove for damping micro-shocks that occur during operation. Segmentation is designed to remove heat from the working area.

The second task of the grooves is to compensate for the linear expansion of the disc when heated. This eliminates planar curvatures and beating of the cut-off wheel. These cutters perform equally well in dry and wet cuts in concrete and hard stone.

  • Solid (continuous, endless)
  • Solid, continuous disc

    The working edge of the disk is solid, the cutting diamond layer is applied evenly along the entire outer radius. With the help of such circles, you can make more accurate and high-quality cuts. The disadvantage is poor removal of waste material from the working area and strong heating of the working edge. As a result, possible delamination of the deposition and deformation of the disc. Therefore, when working with such circles, constant liquid cooling is necessary (wet cutting).

    The main manufacturers of diamond blades for concrete:

    • BOSCH
    • Husqvarna
    • Cedima
    • HILTI
    • Dronco
    • Norton
    • Hitachi
    • Kronenflex
    • LugaNova
    • Interskol
    • ZUBR

    It is pointless to give preference to any trademark, all products are manufactured in accordance with international standards and specifications. The general rule of thumb when choosing is that the miser pays twice. The purchase of frankly cheap unnamed consumables is justified only for one-time work.
    For particularly biased buyers, various tests are regularly conducted, the results of which are published in specialized media.

    Technologies for fixing the diamond working layer:

    With the help of silver solder, the diamond sand is soldered to the base of the disc. The technology is inexpensive, so it is not without its disadvantages. At high temperatures, the solder loses strength and the work surface may peel off. Therefore, such discs need to be cooled during use. For this, coolant is continuously supplied to the working area, this is a wet cut.

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    Form-fit application

    With the help of a special bond, using strong heat, diamond chips are firmly fixed on the metal surface of the disc. Such circles are the golden mean. the price is still affordable, and the strength and heat resistance are quite high. The tool is versatile enough to be used for wet and dry cutting. Suitable for any material, subject to low intensity of use.

    The most expensive and at the same time durable discs. The temperature limit for use is very high. Compulsory cooling is not required, therefore they can be used where wet cutting is unacceptable. Such circles can cut not only reinforced concrete, but also granite with marble.

    Working angle grinder on porcelain stoneware

    Porcelain stoneware is a popular material in the decoration of buildings, due to its high strength. The dignity of the material in its processing turns into a disadvantage. The tile is hard to cut, quickly wears out the tool. Chipping free porcelain stoneware cutting is a true art.

    Of course, you can buy an industrial tile cutter and not be worried. Such a machine is called a “wet cutter” because it uses liquid cooling during operation. This solution is suitable for construction crews.

    Cutting porcelain stoneware with water. wet cutting machine

    It is too wasteful to buy such equipment for home use. over, with due care, you can get by with a household angle grinder and a high-quality disc. a dry cutter.

    Cutting disc for porcelain stoneware without water. dry cutter

    The cut-off diamond wheel for porcelain stoneware must be solid, non-segmented. Its thickness is as minimal as possible, just to ensure the strength of the disc.
    Some tricks from experienced craftsmen:

    • The direction of travel of the angle grinder must match the direction of rotation of the disc. Otherwise, the number of chips increases sharply.
    • Since it is impossible to achieve a complete absence of chips, it is better to cut not along the mowing line of the marking, but with an indent of 1-2 millimeters. The remaining material can be selected with a stone grinding disc. If the cut is not specific, this rule can be neglected.
    • The cut must be done in one pass. With each next pass, the number and size of chips increases.

    What is a diamond disc for concrete

    Such circles are made of strong tempered steel, resistant to temperature effects. A layer of diamond chips is applied to the outer edge, which is actually the cutting element. The spraying is not just located on the surface of the metal, it is arranged in the form of a solid segment, where the sand from technical diamonds is distributed throughout the entire volume.

    The fact is that the method of cutting concrete is to erase it, layer by layer. Accordingly, the diamond disc is gradually grinded, only hundreds of times slower. At the same time, the next working layer comes to the surface, increasing the duration of the use of an expensive disc.

    What are the discs for the concrete angle grinder, and how to use them correctly?

    • What is a diamond disc for concrete
    • Technologies for fixing the diamond working layer:
    • Cutting discs for concrete and their design differences
    • Work angle grinder on porcelain stoneware
    • Sanding concrete with an angle grinder

    An angle grinder, in other words, an angle grinder, is often used for cutting stone, brick, ceramic, and concrete. Stone blades do their job well, but what about harder materials like granite or concrete? Abrasive grit from carbides or corundum, excellent for cutting metals and soft stone, turns out to be unsuitable for processing elementary concrete mass.

    The disc for the concrete angle grinder has its own design, and uses diamond chips as a cutting element. Of course, we are not talking about precious stones, but about artificially grown carbon minerals. However, the cost of such discs is significantly higher than conventional abrasive discs.

    Cutting disc for concrete angle grinder

    Sanding concrete with an angle grinder

    When arranging floor coverings in buildings, it is often necessary to grind the concrete screed. The question is not only aesthetic appeal, such concrete acquires improved strength properties.

    If massive and powerful machines are used to process the floor on an industrial scale, then at home it is quite possible to do with an angle grinder with a special attachment for grinding concrete.

    Grinding disc for concrete

    There are two main ways of doing work:

    It is used for the treatment of ordinary concrete surfaces, is accompanied by a large amount of dust, but it is quite effective when using high-quality grinding discs.

    The main application is the processing of concrete surfaces and products with marble chips. The surface quality is close to polishing, during operation, harmful sludge from dust and water is formed.

    Before dry sanding, the floors must be impregnated with a special bonding primer and check that there is no metal mesh or other reinforcement coming out to the surface. Then, using a diamond nozzle, the floor is sequentially polished until the required smoothness is obtained. After coating the surface with varnish or paint, you get a virtually eternal surface.

    Technologies for fixing the diamond working layer:

    With the help of silver solder, the diamond sand is soldered to the base of the disc. The technology is inexpensive, so it is not without its drawbacks. At high temperatures, the solder loses strength and the work surface may peel off. Therefore, such discs need to be cooled during use. For this, coolant is continuously supplied to the working area, this is wet cutting.

    Form-fit application

    With the help of a special bond, using strong heat, diamond grit is firmly fixed on the metal surface of the disc. Such circles are the golden mean. the price is still affordable, and the strength and heat resistance are quite high. The tool is versatile enough to be used for wet and dry cutting. Suitable for any material, subject to low intensity of use.

    The most expensive and at the same time durable discs. The temperature limit for use is very high. Mandatory cooling is not required, therefore they can be used where wet cutting is unacceptable. Such circles can be used to cut not only reinforced concrete, but also granite with marble.

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    IMPORTANT! Always use diamond blades for their intended purpose. This will save both the disc itself and the workpiece.

    Sanding concrete with an angle grinder

    When arranging floor coverings in buildings, it is often necessary to grind the concrete screed. The question is not only aesthetic appeal, such concrete acquires improved strength properties.

    IMPORTANT! Understand the difference between sanding (leveling the surface) and polishing (smoothing).

    If massive and powerful machines are used to process the floor on an industrial scale, then at home it is quite possible to do with an angle grinder with a special attachment for grinding concrete.

    Grinding disc for concrete

    There are two main ways of doing work:

    It is used for the treatment of ordinary concrete surfaces, accompanied by a large amount of dust, but it is quite effective when using high-quality grinding discs.

    The main application is the processing of concrete surfaces and products with marble chips. The surface quality is close to polishing, during operation, harmful sludge from dust and water is formed.

    Before dry sanding, the floors must be impregnated with a special bonding primer and check that there is no metal mesh or other reinforcement coming out to the surface. Then, using a diamond nozzle, the floor is sequentially polished until the required smoothness is obtained. After coating the surface with varnish or paint, you get a virtually eternal surface.

    Sharpening and roughing discs

    The circle, designed for sharpening and roughing work on wood, concrete, metal, is divided into three types.

    • Grinding wheel for angle grinders. The grinding wheel is used for sharpening various types of tools, cleaning places where welding activities were carried out. Such a circle has a fairly large thickness. at least 5 millimeters. There is a special recess on its inner surface.
    • Diamond grinding wheel. This roughing disc is suitable for processing concrete and stone. The circle can be called highly specialized, since it allows you to work only on stone, concrete.
    • Twisted cutter. This circle is also called cord brushes. A roughing disc of this type is made of metal, characterized by multiple wires that form the brush. The roughing cord of the brushes is distinguished by length, shape, size and maximum speed. Such attachments allow you to work on wood when brushing, as well as remove traces of oxidized metal.

    General information about the tool

    An angle grinder, or simply an angle grinder, is a versatile power tool that allows you to perform various types of work, such as cutting, grinding, stripping, stripping. Such a wide range of possibilities is possible due to the fact that nozzles can be changed on it. Their sizes range from 115 mm to 230 mm. One of the most popular is 125 mm.

    The angle grinder itself, or simply the angle grinder, is a circular type cutting tool. For the convenience of working with it, a handle is provided on its body. The cutting or grinding wheel is put on it, inserted into the grooves, and locked with a special nut. After that, the nut is tightened for secure fixation with a special wrench.

    All angle grinders are divided by power into low-power, medium-power and powerful. Some semi-professional and most professional have the ability to adjust the speed, which is important when working with soft materials such as wood. Low revs are set for them. But for solid materials (stone, concrete, metal), higher revolutions are set. This is a very handy addition.

    Working angle grinder on porcelain stoneware

    Porcelain stoneware is a popular material in the decoration of buildings, due to its high strength. The dignity of the material in its processing turns into a disadvantage. The tile is hard to cut, quickly wears out the tool. Chipping free porcelain stoneware cutting is a true art.

    Of course, you can buy an industrial tile cutter and not be worried. Such a machine is called a “wet cutter” because it uses liquid cooling during operation. This solution is suitable for construction crews.

    Cutting porcelain stoneware with water. wet cutting machine

    It is too wasteful to buy such equipment for home use. over, with due care, you can get by with a household angle grinder and a high-quality disc. a dry cutter.

    Cutting disc for porcelain stoneware without water. dry cutter

    The cut-off diamond wheel for porcelain stoneware must be solid, non-segmented. Its thickness is as minimal as possible, just to ensure the strength of the disc. Some tricks from experienced craftsmen:

    • The direction of travel of the angle grinder must match the direction of rotation of the disc. Otherwise, the number of chips increases sharply.
    • Since it is impossible to achieve a complete absence of chips, it is better to cut not along the mowing line of the marking, but with an indent of 1-2 millimeters. The remaining material can be selected with a stone grinding disc. If the cut is not specific, this rule can be neglected.
    • The cut must be done in one pass. With each next pass, the number and size of chips increases.

    Non-abrasive grinding

    The angle grinder can be equipped with discs with abrasive components and non-abrasive products. The latter are of several types. The most popular of them are:

    • Cup head angle grinder. They are used when working on concrete and stone, but can handle metal. It is not possible to equip a low-power angle grinder with a cup attachment, as it requires increased power. Otherwise, the angle grinder will simply burn out. Due to the curved shape, the cup nozzles can handle hard-to-reach areas;
    • Petal. This nozzle is designed for woodworking. Perfectly copes with the task of removing flaky coatings.

    How To Use Grinding Wheel For Angle Grinder

    A variety of modern power tools allows you to perform difficult repairs, construction and other work without much effort and significantly reduces time costs. One such tool is an angle grinder. Many different circles allow for different types of work. over, the range of processed materials is large. This includes work on concrete, stone, metal, wood, ceramic tiles, porcelain stoneware and so on.

    But before considering these types of work, you should get acquainted with the tool itself, its features and capabilities.