How to cut concrete with a grinder without dust

The first method is wetting

The easiest way to cut concrete or brick without dust is to moisten them with water.

You can use a regular spray bottle for this.

or a sprinkler (made from a plastic bottle with holes made in the lid), or a children's water pistol/machine gun.

Spraying the object must be done directly while sawing so that the dust immediately gets wet without having time to fly away.

Due to the fact that the sawyer's hands are occupied with a grinder, it is quite difficult and inconvenient for him to cut and spray at the same time, and besides, it is unsafe.

Therefore, a second person should do the spraying.

In tandem, all work can be done quickly and without difficulty.

This method does not require any significant effort, but it creates a lot of dirt, because... the dust turns into slurry, spills across the floor, and also flies in different directions.

The second method is more effective and practical.

Features of the work depending on the wall material

The peculiarity of gating in concrete is that concrete has high strength.

The question often arises: is it possible to groove load-bearing walls in a panel house? It is possible, but there are some peculiarities here.

When making grooves in a load-bearing wall, special attention should be paid to the reinforcement that is located in the wall. Damage to it must be avoided, as this can lead to corrosion of the metal and possible weakening of the supporting structures.

In order to prevent damage to the fittings, you need to use a metal detector.

In addition, when gating the load-bearing walls of panel houses, it is strictly forbidden to do horizontal gating, since the load-bearing panel is constantly in a stressed state and any reduction in its cross-section can lead to the collapse of the floor panel and even the entire house.

If, however, the need for grooves cannot be avoided, then grooves on load-bearing walls should be placed only in the vertical direction, which corresponds to the direction of the stiffening ribs of panel structures.

When gating the load-bearing walls of panel houses, the minimum number of folds in the recess should be made, and the length of the channel should not exceed 3 meters.

Tips for cutting concrete without dust

During repairs or construction, sometimes it is necessary to carry out concrete work: cut an opening for a window, a niche, tap walls for wiring. Masters know how many small particles are formed. Cleaning up after such events is a very labor-intensive task. We propose to find out whether it is possible to cut concrete without dust and how to organize this process.

Step-by-step instruction

1) Place the grinder on the floor, table, etc. so that it lies with the disc facing up parallel to the plane of the base.

The angle grinder should be positioned quite stable.

2) Take the outlet with pliers or some kind of clamp.

3) Turn on the angle grinder and literally cut the pipe along the body, under the casing of the angle grinder, about 3 cm.

4) We take reinforced tape, and tightly, tightly, wrap the bend to the body of the angle grinder, with a slight insertion (a couple of centimeters) into the saw blade.

The pipe must be firmly fixed so that it remains absolutely motionless.

5) Take masking tape and cover the open side of the casing with it, connecting it to the outlet.

This design makes it easy to connect a construction vacuum cleaner and cut with a grinder without dust.

For such work, you can only use a construction vacuum cleaner.

When sawing, the disc should be inserted into the material being processed from the engine side, closer to the nozzle.

This way all the dust will go through the outlet into the vacuum cleaner.

Sawing of objects is carried out with the engine forward.

Wet cutting technology for concrete

The use of water allows you to cut concrete with a grinder without dust and overheating of the tool. The technology allows us to solve several problems at once:

increase the life of the diamond nozzle,
avoid dust formation,
increase work speed.

One way to ensure a continuous flow of water is to secure the hose so that the liquid flows onto the disc. If there is no running water in the work area, you can involve an assistant in the process. He will use a primitive device made from a plastic bottle to wet the circle. At the same time, the incision site is moistened with liquid. This must be done carefully so that water does not pour into the instrument.

The method is not very applicable in multi-storey buildings, since there is a risk of flooding the neighbors from below.

READ How to Use a Grinder

Types of nozzles

The range of replacement nozzles includes the following types:

Brushes , which are used to polish and clean surfaces from rust or dirt.
Circles with which you can cut metal or ceramics. It all depends on the purpose of the disk and its strength. As a rule, data is indicated directly on the disks.

Brush for angle grinder DEXX, disc, stranded tufts. Photo 220Volt.ru

The article described almost everything related to angle grinders. But the main thing that was thoroughly analyzed was safety precautions. You should pay the most careful attention to compliance with the rules of working with an angle grinder, as this not only guarantees the high-quality execution of work processes, but also the preservation of your own health.

How to choose a disc for an angle grinder

Concrete is a durable material, so working with it is quite difficult. To perform cutting, an angle grinder (angle grinder) is most often used. This instrument is better known in everyday life as a “ grinder ”.

A diamond wheel is used as a nozzle. Depending on their design features, they are divided into several types:

segmental,
solid;
combined (turbocharged).

The first option is a solid base with a segmented edge. This circle is low in cost, but not very suitable for working with durable materials. Honor also needs that it is used only for dry cutting. The solid blade has a continuous diamond edge, which prevents chipping during operation. This nozzle heats up quickly, so it must be cooled with a continuous stream of water.

The combined or turbo diamond blade is universal. It can withstand maximum loads and is even suitable for cutting reinforced concrete.

Before purchasing the right type of nozzle, you need to understand what material you will have to work with. Reinforced concrete is reinforced with metal rods, which the cutter may bump into during the process. Therefore, if a deepening of more than 10 cm is expected, high-strength disks should be used, that is, turbocharged ones. Fresh concrete is more abrasive; over time, the material hardens and its strength increases. Honor also follows this factor when choosing a cutting wheel.

The disk segments are attached to the blade using silver solder or laser welding. The first option is more suitable for wet cutting, the second is used only for dry cutting. When choosing a suitable diamond wheel, you should also pay attention to its diameter, which should match the parameters of the angle grinder. An important criterion is also the rotation speed of the disk. It is better if it is higher than the maximum possible indicator stated in the technical characteristics of the “grinder”. This will ensure optimal operation.

How and with what you can cut concrete at home: methods

Concrete is a very popular material in modern construction. One of its main advantages is durability. However, this quality becomes a problem when cutting concrete. Of course, with a thin layer of an experienced master there will be no special problems. However, the thicker the material, the more difficult it is to cut. However, this task is quite feasible. Main. just follow certain rules when working with this material.

How to cut concrete. basic moments

Let us immediately note that such work must be approached very responsibly. If you need to cut a layer more than 15 centimeters thick, it is better to turn to professionals. A beginner is unlikely to cope with such a task without proper experience. Accordingly, first of all, we measure the thickness of the concrete layer that needs to be cut. It is recommended to divide the work into several stages:

Clearly identify the area you want to cut and mark; prepare the necessary tools; go straight to cutting.

When renovating an apartment or private house, the question often arises: how to cut concrete? This is necessary when owners plan to lay new electrical wiring, make a hole for a door, and in many other cases.

Currently, there are several options for working with concrete:

Slicing;
Water jet;
Oxygen spear.

But most often it is a grinding machine with a diamond disc. Advantages of this method:

Very smooth cut;
Relatively low noise level;
Speed;
Versatility.

What you need to know about concrete

To cut concrete correctly, you need to know what kind of concrete you are dealing with in a particular case. In particular, the selection of the most suitable diamond blades depends on this.

Many structures have metal fittings inside, which gives them the necessary strength and at the same time makes the task much more difficult for anyone who wants to insert a plug into it. The problem in most cases occurs if you need a depth of more than 10 centimeters. For such work, you need to purchase a special diamond turbo disc. an ordinary one will not cope with the task.

The presence of basalt or quartz in gravel containing gravel ensures maximum hardness. In such a wall the circle quickly becomes dim. To get the job done faster, you need to take those cutting elements that have diamonds secured in a soft binding. This will allow you to quickly open your protective shell and provide maximum efficiency at the same cost.

The proportion of gravel, among other things, affects the speed of the tool. the larger it is, the slower the wheel rotates.

Based on the above, a conclusion should be drawn. Before you begin, it is important to thoroughly understand what type of concrete you are dealing with. A thorough study of its properties will allow you to choose the most suitable range.

Tile cutting

Sometimes it is necessary to shorten a standard concrete slab at home without power tools.

Here you have to work manually. For this:

Mark the line with a pencil on both sides;
Cracks in concrete with a toe and hammer;
A chisel and a hacksaw will help with accessories.

The first method is wetting

The easiest way to cut concrete or brick without dust is to moisten them with water.

You can use a regular spray bottle for this.

or a sprinkler (made from a plastic bottle with holes made in the lid), or a children's water pistol/machine gun.

Spraying the object must be done directly while sawing so that the dust immediately gets wet without having time to fly away.

Due to the fact that the sawyer's hands are occupied with a grinder, it is quite difficult and inconvenient for him to cut and spray at the same time, and besides, it is unsafe.

Therefore, a second person should do the spraying.

In tandem, all work can be done quickly and without difficulty.

This method does not require any significant effort, but it creates a lot of dirt, because... the dust turns into slurry, spills across the floor, and also flies in different directions.

The second method is more effective and practical.

Wet cutting technology for concrete

The use of water allows you to cut concrete with a grinder without dust and overheating of the tool. The technology allows us to solve several problems at once:

increase the life of the diamond nozzle,
avoid dust formation,
increase work speed.

The method is not very applicable in multi-storey buildings, since there is a risk of flooding the neighbors from below.

How to choose a disc for an angle grinder

A diamond wheel is used as a nozzle. Depending on their design features, they are divided into several types:

segmental,
solid;
combined (turbocharged).

READ Is it possible to cut glass with a grinder?

The combined or turbo diamond blade is universal. It can withstand maximum loads and is even suitable for cutting reinforced concrete.

What tools are required?

Wall sawing machines

Units of this type are an excellent tool for cutting concrete structures. The machine is equipped with a mount and rails for moving the saw, so it can perform a large amount of work without rest. In addition, using such a mechanism has the following advantages:

increasing the depth of the opening to 7.5 cm;
performing complex work on a large scale;
low vibration and noise levels;
possibility of fixing the machine;
diamond cutting of reinforced concrete in the shortest possible time.

When cutting on such a machine, training courses are provided and access to a 380 W network is provided.

Manual equipment

A grinder for cutting concrete of this type has replaceable discs that are attached to the unit using a screw device. The construction market offers a wide selection of equipment of various sizes and power. The depth of the cut hole reaches 13 cm. The hand cutter is easy to move from place to place and cut in hard-to-reach places. The disadvantages of such a device include the application of great effort on the part of workers, which reduces the volume and time of the continuous process.

How to make a casing for a vacuum cleaner with your own hands

An angle grinder with a built-in vacuum cleaner allows you to get rid of small particles of material formed during the cutting process with an angle grinder. But what if there is a need to cut concrete with a conventional tool without additional options? The simplest solution would be to purchase a casing for the vacuum cleaner separately or to make the device yourself. You can hire an assistant who will collect the particles formed during cutting with a vacuum cleaner.

You can easily make a convenient nozzle from a simple plastic canister, in which car “anti-freeze” is often sold. To work, you will need a construction cutter and a container of a suitable size, the neck of which will fit the diameter of the vacuum cleaner hose.

The manufacturing sequence is as follows:

Mounting holes are cut on both sides so that you can easily change the direction of rotation of the disk.
A slot of suitable size is made under the circle.
To attach the grinder cutter, another hole is cut.
The hose is connected to the neck of the canister and secured with an adapter ring with a clamp.
The “grinder” is placed in the casing and all the elements are connected.
The unused hole is covered with a lid.

A good dust collector can be made from a simple five-liter polyethylene Lenovo bottle. It is attached using a standard protective casing, and the vacuum cleaner pipe is attached to the neck. This design is suitable for any type of work, with the exception of gating.

Last tip: in order to make a straight cut, markings are first applied. Then wooden blocks are secured along the mowing line. After this, a shallow incision of up to 1 cm is made, the restraints are removed and work continues. Throughout the entire process, coolant is supplied to the disc blade. All manipulations must be carried out wearing protective glasses, a respirator and gloves.

Sources:

https://stroimaster-nsk.ru/beton/kak-pilit-beton-boLGarkoj-bez-pyli.html https://remontami.ru/rezka-betona-bez-pyli/

Types of bricks

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

Red brick

Classic brick, made from special types of clay and fired in a kiln at high temperatures, is called red for its color. It is widely used in various fields of construction and in the construction of individual residential buildings. The material can be cut at home with several tools that allow this to be done to produce products with a high level of precision. The cutting tool is often a diamond wheel. The appearance of the final structure largely depends on what you use to cut it with.

Hand-molded facing brick

A distinctive feature of hand-molded brick is its unusual and attractive appearance. Used for facing work. However, it is quite expensive, so in order to save money, it is practiced to cut hand-molded bricks in half along the length of the block. This will take 2 times less material. Cutting is carried out with a diamond tool.

Facing hollow brick

Hollow brick has internal voids, which can account for up to half of its mass. There are products on sale in all kinds of shapes (with ready-made fillets, bevels, etc.), so you don’t need to cut it so often. If necessary, you can cut the material with any diamond device (grinder, saw, etc.).

Solid brick crossbar format

The crossbar-format brick has an unusual shape: it is elongated (more than 29 cm) and narrow (about 4 cm). Used exclusively for cladding. Cutting is done with the same tool.

Clinker brick

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

Sand-lime brick

Sand-lime brick is made from a mixture of lime and sand (quartz rocks). The material is quite pliable and therefore can be easily cut with a grinder and a diamond wheel. If you don’t have this tool, you can get the job done with a simple hacksaw.

Fireclay brick

Stove, or fireclay, brick is a heat-resistant building material that is used for laying fireplaces and stoves. The blocks are cut on a special machine using a segmented diamond wheel.