How To Saw A Dust-Free Angle Grinder

2 ways how dust-free angle grinder is dusty?

Sawing with an angle grinder on concrete, brick, stone or tile produces a lot of dust. In this article we will tell you how a dust-free angle grinder makes dust.

Dust Not only pollutes the room or work area, but also has a detrimental effect on human health.

In addition, it is much more difficult and inconvenient to work in dust, because It’s hard to breathe and nothing is visible.

How To Saw A Dust-Free Angle Grinder

There are two ways to do dust-free work.

Step-by-step instruction

Just five simple steps:

1) We put the angle grinder on the floor, a table or other. So that it lies with the disc upwards parallel to the plane of the base.

the angle grinder must be sufficiently stable.

2) We take a branch with pliers or some kind of clamp.

3) turns on the angle grinder and literally saws the branch pipe along the body, under the casing of the angle grinder, about 3 cm.

4) We take reinforced tape, and tightly, in an interference fit, we attach the branch to the body of the angle grinder, with a slight odor (a couple of centimeters) into the saw blade.

The branch pipe must be fixed thoroughly so that it is kept absolutely still.

5) We take masking tape, and glue the open side of the casing with it, connecting it to the taps.

This design makes it easy to connect a construction vacuum cleaner and dust-free angle grinder.

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

When sawing, the blade should be driven into the material to be cut from the engine side, closer to the nozzle.

So all the dust will go through the outlet to the vacuum cleaner.

We cut objects with the engine forward.

The second way to connect the vacuum cleaner

This method consists in connecting a construction vacuum cleaner to an angle grinder using improvised means.

For this you will need:

Polypropylene drainage branch with a diameter of 50mm, at 45 degrees;

Reinforced scotch tape (for greater reliability)

Good quality masking tape.

The described components for this method can be replaced by any suitable analogs.

First wetting method

The easiest way to cut dust-free concrete or brick is to wet them with water.

To do this, you can use a conventional spray bottle.

Or a Splatter (made from a plastic bottle with holes made in the lid), or a children’s water gun / machine.

Spraying the object must be done directly during the saw so that the dust immediately gets wet, and does not have time to scatter.

Due to the fact that the hands of the sawfly are occupied by an angle grinder, it is quite difficult and inconvenient for him to get dusty at the same time, and to spray, besides, it is unsafe.

Therefore, a second person should be involved in 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. Dust turns into slurry, spills on the floor, and also flies in different directions.

The second way is more efficient and practical.

Safety engineering

Such a dust extraction system does NOT imply any major structural changes in the device angle grinder.

We just attached the pipe to the tool body.

And the second part of the casing was closed with masking tape, this element can create a false impression of security.

Masking tape is only designed to protect against dust.

Therefore, it is necessary to observe all safety measures when working with an angle grinder.

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 of the “angle grinder”. But what if there is a need to dust the concrete with an ordinary tool without additional options? The simplest solution would be to purchase a casing for a vacuum cleaner separately, or to make a device yourself. You can attract an assistant, who will collect the particles formed during the sawing with a vacuum cleaner.

It is easy to make a convenient attachment from a simple plastic canister, which is often used to sell a car “anti-freeze”. For work, you will need a construction cutter and a container of a suitable size, the neck of which is suitable in diameter to the vacuum cleaner hose.

The manufacturing sequence is as follows:

  • Fitting holes are cut on both sides so that you can easily change the direction of rotation of the disc.
  • A slot of a suitable size is made under the circle.
  • Another hole is cut to attach the “angle grinder” cutter.
  • The hose is docked with the canister neck and secured with an adapter ring with a clamp.
  • “Angle grinder” is placed in the casing and all elements are connected.
  • Cover the unused opening with a lid.

A good dust collector can also be obtained from a simple five-liter plastic bottle. It is attached using a standard protective cover, and the vacuum cleaner nozzle to the neck. This design is suitable for any type of work, except for chasing.

The last tip: in order to make the cut exactly, markings are first applied. Then wooden blocks are fixed along the mowing line. After that, a shallow incision up to 1 cm is made, the stops are removed and the work continues. Throughout the entire process, coolant is supplied to the disc blade. All manipulations must be carried out with goggles, a respirator and gloves.

Concrete cutting Floor saws

Seam cutters are also often used for tasks of this kind. There are some features that are desirable to explore.

Key features of concrete cutting Floor saw:

  • Usually one of two types of efficient equipment is used. gasoline / electric. The latter option requires a connection to the network, gasoline units can be used anywhere (in the field, in open areas, to create expansion joints in the road surface, etc.).
  • It is necessary to provide a supply of cooling water under high pressure, which will eliminate the risk of overheating and reduce the volume of dust.
  • For gasoline devices, it is important to provide the ability to ventilate the supply and exhaust type if work is carried out in a closed room.
  • Electrical equipment will need a 380V AC connection.

Dust-free cutting of concrete: how do-it-yourself angle grinder dusty, tool

Cutting concrete without dust is almost impossible, since in the process of sawing and processing stone, one way or another a lot of dust appears, the volume of which can only be reduced. But it is also advisable to do this, since too much dust in the process of performing work brings a lot of troubles: it spoils the tool and blunts parts, settles in the lungs and on all surfaces in the room.

With the introduction of modern equipment, dusting concrete has become easier. there are special tools for cutting, consumables for them. Devices can be hand-held or stationary, powered by electricity or other sources. As a rule, all concrete cutting tools are equipped with diamond parts. chains, discs, crowns, solders, etc.

Types of tools for cutting concrete

For cutting concrete, diamond wheels are used, their main dimensions:

  • Outside diameter of discs, in the range of 100. 600 mm;
  • Thickness, in the range of 0.4. 3.5 mm;
  • The bore diameter is more than 15 mm, the optimal diameter is 22.23 mm.

Diamond wheels also differ in other indicators.

These include:

  • The quality of the diamonds on the disc;
  • The material of the discs themselves;
  • Soldering method;
  • The form;
  • Appointment.

The last two characteristics are the main ones when classifying a tool.

The table shows diamond discs of different configurations of working edges:

According to the spraying technology, circles are distinguished:

  • Brazed with silver solder, they are used only for wet processing of concrete surfaces;
  • Laser welded. These are the strongest and most durable blades that can withstand dry cutting. Such a diamond disc for concrete for an angle grinder is most often used for cutting reinforced concrete;
  • Coated with special compounds, which are then exposed to high temperatures. These are universal discs with average characteristics.

The circles also differ in the degree of concentration of the spraying, which in high-quality tools reaches more than 30%, and the abrasive grit is distributed throughout the volume of the teeth and grooves. With this design, the service life of the wheel is significantly increased, when it is seamed, new layers are opened for cutting the material.

Concrete cutting procedure. Concrete wet cutting technology

The use of water allows you to cut concrete “angle grinder” without dust and overheating of the tool. The technology allows solving several problems at once:

  • Extend the resource of the diamond tip,
  • Avoid dust formation,
  • Increase work speed.

One way to keep the water flowing continuously is to secure the hose so that the liquid flows onto the disc. If there is a plumbing in the work area, an assistant can be involved in the process. He will use primitive tools from a plastic bottle to wet the circle. At the same time, the incision site is moistened with a liquid. This must be done carefully so that water is not poured into the instrument.

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

Tips for cutting dust-free concrete

During repairs or construction, sometimes it is required to carry out work on concrete: cut out an opening for a window, a niche, cut walls for wiring. Masters know how many small particles are formed in this case. Cleaning after such events is a very laborious task. We offer you to figure out whether it is possible to cut concrete without dust and how to organize this process.

READ  How to Cut Ceramic Tiles Angle Grinder

Determining the type of concrete

Before you cut an angle grinder into concrete, you need to determine what type of concrete you are dealing with. This is due to the fact that different types of diamond discs are used for each type of material. For example, it can be reinforced with metal rods (reinforced concrete).

If the cutting depth is about 10 centimeters or deeper, then on your way you may stumble upon a metal grate (reinforcement cage). As mentioned above, there are special disks for THESE purposes.

In addition, it should be borne in mind that the structure of the material changes over time. Fresh concrete is more abrasive, while old concrete is harder. For this reason, the diamond discs for old and new material must be different.

Reinforced concrete diagram

If you have the time, you can study the structure of the material in more detail, which will allow you to choose the most suitable tool for it. For example, if the composition contains basalt or quartz, then it will quickly dull the circle. Therefore, diamond segments should be bonded with a soft material, so that new diamonds are quickly “opened”.

It should also be borne in mind that the size of the filler affects the cutting speed. the larger it is, the slower the procedure is.

In the photo. a diamond wheel with laser brazing

2 ways how dust-free angle grinder is dusty?

Sawing with an angle grinder on concrete, brick, stone or tile produces a lot of dust. In this article we will tell you how a dust-free angle grinder makes dust.

Dust Not only pollutes the room or work area, but also has a detrimental effect on human health.

In addition, it is much more difficult and inconvenient to work in dust, because It’s hard to breathe and nothing is visible.

There are two ways to do dust-free work.

The second way to connect the vacuum cleaner

This method consists in connecting a construction vacuum cleaner to an angle grinder using improvised means.

For this you will need:

Polypropylene drainage branch with a diameter of 50mm, at 45 degrees;

Reinforced scotch tape (for greater reliability)

Good quality masking tape.

The described components for this method can be replaced by any suitable analogs.

How to choose a disc for an “angle grinder

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

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

  • Segmental,
  • Solid;
  • Combined (turbocharged).

The first option is a solid base with a segmented edge. Such a circle is low cost, but not very suitable for working with durable materials. It should also be taken into account that it is used only for dry cutting. The solid disc has a continuous diamond edge so that it will NOT chip during operation. Such a nozzle heats up quickly, therefore it must be cooled with a continuous water jet.

Before buying a nozzle of the right type, you need to figure out what material you will have to work with. Reinforced concrete is reinforced with metal rods, which in the process the cutter can stumble upon. Therefore, if a deepening of more than 10 cm is expected, use discs of increased strength, that is, turbocharged. Fresh concrete is more abrasive, over time the material hardens, its strength increases. This factor should also be taken into account when choosing a cutting wheel.

Segments of the disc are attached to the blade with 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 pay attention to its diameter, which must match the parameters of an angle grinder. The rotational speed of the disk is also an important criterion. It is better if it is higher than the maximum possible indicator stated in the technical characteristics of the “angle grinder”. This will ensure optimum performance.

How to work an angle grinder without dust

Sawing with an angle grinder on concrete, brick, stone or tile produces a lot of dust. In this article we will tell you how a dust-free angle grinder makes dust.

Dust Not only pollutes the room or work area, but also has a detrimental effect on human health.

In addition, it is much more difficult and inconvenient to work in dust, because It’s hard to breathe and nothing is visible.

There are two ways to do dust-free work.

First wetting method

The easiest way to cut dust-free concrete or brick is to wet them with water.

To do this, you can use a conventional spray bottle.

Or a Splatter (made from a plastic bottle with holes made in the lid), or a children’s water gun / machine.

Spraying the object must be done directly during the saw so that the dust immediately gets wet, and does not have time to scatter.

Due to the fact that the hands of the sawfly are occupied by an angle grinder, it is quite difficult and inconvenient for him to get dusty at the same time, and to spray, besides, it is unsafe.

Therefore, a second person should be involved in 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. Dust turns into slurry, spills on the floor, and also flies in different directions.

The second way is more efficient and practical.

Step-by-step instruction

Just five simple steps:

1) We put the angle grinder on the floor, a table or other. So that it lies with the disc upwards parallel to the plane of the base.

the angle grinder must be sufficiently stable.

2) We take a branch with pliers or some kind of clamp.

3) turns on the angle grinder and literally saws the branch pipe along the body, under the casing of the angle grinder, about 3 cm.

4) We take reinforced tape, and tightly, in an interference fit, we attach the branch to the body of the angle grinder, with a slight odor (a couple of centimeters) into the saw blade.

The branch pipe must be fixed thoroughly so that it is kept absolutely still.

5) We take masking tape, and glue the open side of the casing with it, connecting it to the taps.

This design makes it easy to connect a construction vacuum cleaner and dust-free angle grinder.

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

When sawing, the blade should be driven into the material to be cut from the engine side, closer to the nozzle.

So all the dust will go through the outlet to the vacuum cleaner.

We cut objects with the engine forward.

Concrete wet cutting technology

The use of water allows you to cut concrete “angle grinder” without dust and overheating of the tool. The technology allows solving several problems at once:

  • Extend the resource of the diamond tip,
  • Avoid dust formation,
  • Increase work speed.

One way to keep the water flowing continuously is to secure the hose so that the liquid flows onto the disc. If there is a plumbing in the work area, an assistant can be involved in the process. He will use primitive tools from a plastic bottle to wet the circle. At the same time, the incision site is moistened with a liquid. This must be done carefully so that water is not poured into the instrument.

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

Safety engineering

Such a dust extraction system does NOT imply any major structural changes in the device angle grinder.

We just attached the pipe to the tool body.

And the second part of the casing was closed with masking tape, this element can create a false impression of security.

Masking tape is only designed to protect against dust.

Therefore, it is necessary to observe all safety measures when working with an angle grinder.

Knock out a new doorway, break through the electrical wiring, or demolish part of the wall between the loggia and the room. For this, an angle grinder is often used. And whoever used it knows that it turns out a lot of dust. What can be done about it?

The most reliable is to use industrial dust extraction systems. This is the case that they write about in advertisements “dust-free chasing” and so on. This will require 1) a dust cover, 2) an industrial vacuum cleaner.

However, these are all professional systems that are not cheap. Therefore, naturally, I want to replace them with something that can be assembled for 2 rubles with my own hands. Well, what is there, to the existing casing, screw another plate on the side. So that the disc is closed on both sides. Or like this.

Attach the hose from the vacuum cleaner to the end. and you’re done. But here is the difficulty: an ordinary household vacuum cleaner will bend over very quickly from such experiments. Fine concrete dust will do the trick. Alternatively, you can assemble a two-stage system. Where the first stage will be a bottle of water, in which all the dust will settle.

If it is impossible to use a vacuum cleaner, only half measures remain. You can wet the screed to be cut with plenty of water, hoping that wet grains of sand will not scatter so much.

Although there will still be dust. And all that is possible is to somehow reduce the effect of the transformation of the apartment in the last days of Pompeii. Limit the area of ​​work to one room, the gap under the door is plugged with a wet rag. To prevent the dust from scattering far, you can ask someone to pour water under the blade at the cutting site (only suitable for a diamond blade, and this is not entirely). You can also wet the sheet and hang it nearby. Concrete dust is very fine, ordinary polyethylene hardly retains it.

And as an option. try to do without an angle grinder altogether. If you can’t handle the dust. So, you can move the doorway with a puncher. Through holes are drilled according to the mark with a 12 m or 14th drill. Then the rest of the wall is broken with a chisel (on the same perforator). There will be enough trash, but probably less dust.

During repairs or construction, sometimes it is required to carry out work on concrete: cut out an opening for a window, a niche, cut walls for wiring. Masters know how many small particles are formed in this case. Cleaning after such events is a very laborious task. We offer you to figure out whether it is possible to cut concrete without dust and how to organize this process.

READ  How to make an angle grinder with your own hands

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 of the “angle grinder”. But what if there is a need to dust the concrete with an ordinary tool without additional options? The simplest solution would be to purchase a casing for a vacuum cleaner separately, or to make a device yourself. You can attract an assistant, who will collect the particles formed during the sawing with a vacuum cleaner.

It is easy to make a convenient attachment from a simple plastic canister, which is often used to sell a car “anti-freeze”. For work, you will need a construction cutter and a container of a suitable size, the neck of which is suitable in diameter to the vacuum cleaner hose.

The manufacturing sequence is as follows:

  • Fitting holes are cut on both sides so that you can easily change the direction of rotation of the disc.
  • A slot of a suitable size is made under the circle.
  • Another hole is cut to attach the “angle grinder” cutter.
  • The hose is docked with the canister neck and secured with an adapter ring with a clamp.
  • “Angle grinder” is placed in the casing and all elements are connected.
  • Cover the unused opening with a lid.

A good dust collector can also be obtained from a simple five-liter plastic bottle. It is attached using a standard protective cover, and the vacuum cleaner nozzle to the neck. This design is suitable for any type of work, except for chasing.

The last tip: in order to make the cut exactly, markings are first applied. Then wooden blocks are fixed along the mowing line. After that, a shallow incision up to 1 cm is made, the stops are removed and the work continues. Throughout the entire process, coolant is supplied to the disc blade. All manipulations must be carried out with goggles, a respirator and gloves.

Wetting

The simplest, most affordable option carries out work without dust. this is wetting. That is, the surface with which you have to work. brick, concrete, and so on, must be moistened before work. over, there is a need to use something large, bulky, professional. an ordinary spray gun is suitable for this purpose. In his absence. a plastic bottle with holes made in the lid. Such devices used to watered flowers, getting a kind of watering can. Or even a children’s water pistol.

The essence of the method lies in the fact that it is necessary to spray immediately before work, so that the dust gets wet, but could not scatter. And since a person by nature has two hands, he will definitely need an assistant. After all, it will work as an angle grinder. Therefore, a tandem of two people for this job is ideal. The only inconvenience: instead of dust, dirty liquid will appear. It’s worth remembering.

Reliable ways how a dust-free angle grinder gets dusty

This is probably why repairs take place exclusively in the warm season, since you can leave the house at any time. And what is the main enemy of this action? That’s right, dust. It is she who leads to such consequences as asthma. It is she who “pokes her curious nose” everywhere. This is especially true when working with an angle grinder. However, there is a way to protect yourself from dust. Even two. In them we will talk.

Connecting a vacuum cleaner

When using the second method, there will be no dirt, but the amount of noise will increase. Although using a construction vacuum cleaner when working with an angle grinder is reasonable enough. For this you will need:

  • Sewer outlet made of polypropylene, with a diameter of 50 mm, an inclination of 45 °;
  • Reinforced tape and masking tape, both of which must be of good quality;
  • Of course, the construction vacuum cleaner itself.

The essence of the method is as follows:

  • The angle grinder should lie in such a way that its disc is parallel to the plane of the base, looking up. It could be a table, stool, similar.
  • It is worth taking a branch with pliers or a clamp.
  • Next, you need to make clear actions: turn on the angle grinder and, literally, insert the nozzle along the body by about 3 cm.
  • Next, it is worth taking reinforced tape, very tightly wrap this bend to the tool body, and not forgetting in a small one it goes about 2 cm into a dusty disk.
  • It is necessary to wrap the open part of the casing with masking tape, Connecting it also to the taps.

In this design, the construction vacuum cleaner is inserted into the remaining open part of the outlet, and all dust is sucked in during operation.

This method has another option for working without dust using a construction vacuum cleaner. For him you need a bucket, plastic, this remains from the paint. At the bottom side of the bucket, you need to drill a hole that should ideally fit the size of the hose in diameter. over, the hose must not just be fixed in this hole. it must be glued using glue or sealant. Insert the other part of the hose into the vacuum cleaner. As soon as work begins, the vacuum cleaner should be immediately turned on, and the dust that will fall into the bucket will immediately be sucked in.

This is not to say that some of the presented methods are better, some are worse. Each has its own advantages and disadvantages, it all depends solely on the case, whether there are assistants, how, where the work takes place.

In general, the wetting method is usually used when it is required to work with a monolithic surface. The second method is when it is possible, for example, to put a ceramic plate on the surface, working on weight with it. However, everything is individual, and in this case it is NOT correct to advise. it is better to try it yourself.

Concrete cutting Floor saws

Seam cutters are also often used for tasks of this kind. There are some features that are desirable to explore.

Key features of concrete cutting Floor saw:

  • Usually one of two types of efficient equipment is used. gasoline / electric. The latter option requires a connection to the network, gasoline units can be used anywhere (in the field, in open areas, to create expansion joints in the road surface, etc.).
  • It is necessary to provide a supply of cooling water under high pressure, which will eliminate the risk of overheating and reduce the volume of dust.
  • For gasoline devices, it is important to provide the ability to ventilate the supply and exhaust type if work is carried out in a closed room.
  • Electrical equipment will need a 380V AC connection.

Cutting concrete with ropes

This method is used less often than all of the above, but is also relevant when performing certain work.

How concrete is cut using Special ropes:

  • To accomplish the task, a special rope and diamond bits are used, as well as a drive. You can cut any structure without limitation in thickness (including columns, for example).
  • For optimal operation of the equipment, it is imperative to ensure the supply of cold water under high pressure and a network with a voltage of 380V.
  • The cost of work can be different and depends on such factors: the type of material, the type and size of the opening, the thickness of the structure.
  • Dust when using this method appears a minimum amount, noise is also created a little.
  • Wire cutting allows you to quickly cut openings of any configuration with perfectly straight edges, even where access is limited.

Is there a technology for cutting concrete without noise and dust

Thinking about what to cut concrete, you need to take care of reducing the amount of dust that inevitably appears in the process of performing work. In certain cases, nothing can be done and you have to work in difficult conditions, but in others it is quite possible to remove dust. The main thing is not to violate safety requirements and use proven methods.

Different methods are used to cut concrete. manual, machine, wet and dry. The first two are due to the type of tool chosen, wet assumes the effect of water on the cutting part and on the concrete surface itself, the dry method does NOT use water supply. Regardless of the chosen cutting method, the amount of dust accompanying the process is always large enough.

The most common methods for cutting concrete are:

  • Diamond cutting of partitions and walls with hand tools (angle grinder and others).
  • Diamond cutting using a stationary wall saw.
  • Diamond cutting Floor saws.
  • Use for cutting rope.

When using a hand tool (most often it is an angle grinder), a construction vacuum cleaner can be connected to it, which will draw in almost all the dust that appears during the cutting process. If you have the ability to connect the tool to the vacuum cleaner, you can do everything yourself.

What you need to create an adapter for a construction vacuum cleaner:

  • Sewer outlet made of polypropylene with a diameter of 50 mm, at 45 degrees.
  • Reinforced tape (it is more reliable).
  • High quality masking tape.

The process of creating a dust extraction attachment:

  • Place the angle grinder as firmly as possible on a table or floor so that it lies upside down with a disc parallel to the base plane.
  • Take the bend with pliers either with a clamp, the angle grinder will turn on the “saw” branch pipe along the body, 3 centimeters under the tool casing.
  • Reinforced with scotch tape very tightly, in tightness, tie the bend to the body of the angle grinder, go a little into the saw blade (a few centimeters). The fixing of the branch pipe must be reliable so that it is fixed immovably.
  • With masking tape, glue the open side of the casing, thus connecting it to the branches. Then you can connect a construction vacuum cleaner and remove dust during operation.

Such a system of design changes in the tool does NOT imply, but it is advisable to consult with a representative of the manufacturer for its application for the possibility of making improvements.

Dust-free cutting of concrete: how do-it-yourself angle grinder dusty, tool

Cutting concrete without dust is almost impossible, since in the process of sawing and processing stone, one way or another a lot of dust appears, the volume of which can only be reduced. But it is also advisable to do this, since too much dust in the process of performing work brings a lot of troubles: it spoils the tool and blunts parts, settles in the lungs and on all surfaces in the room.

With the introduction of modern equipment, dusting concrete has become easier. there are special tools for cutting, consumables for them. Devices can be hand-held or stationary, powered by electricity or other sources. As a rule, all concrete cutting tools are equipped with diamond parts. chains, discs, crowns, solders, etc.

READ  Bit The Nut On The Angle Grinder How To Unscrew

Cutting concrete with hand tools

Due to the strength of the material, not every hand tool is suitable for working with it. Most often, an angle grinder is used for THESE purposes (aka UShS, an angle grinder). For cutting concrete, a special nozzle in the form of a diamond wheel is used, which can be solid, segmental, combined.

Types of diamond wheels for angle grinder that can cut concrete:

  • Solid. made with a continuous diamond cutting edge, due to which there are NO chips in the work. The nozzle heats up periodically, therefore it requires constant cooling with a stream of water.
  • Segmented disc. solid base, Segmented edge. The wheel is inexpensive, but wears out quickly from durable materials. Used exclusively for dry cutting.
  • Combined (aka turbo-diamond) disc. considered universal, capable of withstanding maximum loads, it can even cut reinforced concrete.

The nozzles are chosen in accordance with the material, which is planned to be cut, and also taking into account the type of work, conditions. Reinforced concrete from a deepening of more than 10 centimeters is cut only with high-strength (turbocharged) discs. All segments of the disc are attached to the blade by laser welding or silver soldering. The first can only be used for dry cutting, the second. wet.

The wheel should be made with an inner diameter corresponding to the diameter of the angle grinder. The rotational speed of the disc is also important. it is desirable that it be higher than the angle grinder. Depending on the type of cutting selected and the correct selection of the tool, the amount of dust that appears during work may vary.

So, if you cut concrete for a long time with an insufficiently strong and ineffective tool with nozzles, there will be a lot of dust, and the result is minimal. It is possible to reduce the amount of dust by using the wet cutting method. water prevents the tool from overheating and prevents the appearance of dust. So it is possible to speed up the work and increase the resource of the diamond tip.

The water supply can be organized in different ways. from spraying concrete with a spray gun periodically while performing work in fixing the hose to the tool so that the liquid flows in a continuous stream onto the disc.

A convenient attachment is made from an ordinary plastic canister. You will also need a cutter, a container of the desired size, the neck of which, in its diameter, will dock with the vacuum cleaner hose.

Further, on both sides, you need to make mounting holes so that you can easily change the direction of rotation of the disk. A slot of a suitable size is made for the circle, and another hole is cut for mounting the cutter. Carefully connect the hose to the neck of the canister, then fasten it with a transition ring with a clamp. the angle grinder is sent to the casing, all elements are securely connected. The hole that is not used is closed with a lid.

To make the cut even, you first need to apply a markup, then wooden blocks are attached along the mowing line. After that, you need to make a shallow cut up to 1 centimeter, remove the limiters, and continue working. All manipulations must be performed exclusively in a respirator, goggles, gloves, overalls.

Concrete cutting with wall saws

Wall saws are used to cut concrete on larger scale and complex jobs. Less dust than an angle grinder, much higher productivity and efficiency.

Features of cutting a concrete monolith with a wall saw:

  • Diamond cutting of this type is characterized by a large cutting depth, therefore it is used for industrial cutting of hatches / openings, other elements with heavy reinforcement in partitions, walls, floor slabs. Works are carried out in the shortest possible time.
  • To accomplish the task, you need to provide free one-way access from 30-35 centimeters.
  • It takes a lot of water for cooling (up to 15 liters per minute), so it should be possible to restock.
  • Waste water can be collected with a standard vacuum cleaner.
  • To operate the equipment, an alternating current network with a capacity of 32A and a voltage of 380V is required.

It is important to know

Modern manufacturers offer a variety of equipment models, so it will NOT be difficult to find a specific model of equipment in the regions (as well as companies or specialists who will quickly and efficiently perform the work). But you need to remember about some nuances.

Things to keep in mind when cutting concrete:

  • Wall saws are not used in multi-storey panel-type buildings because of the risk of flooding the lower floors with water. Also, the machine is not suitable for work in a confined space, if necessary, perform small volumes of cut.
  • To reduce noise, you can cut openings in parts (at least 6 parts). The price of work in this case rises and depends on the number of cut pieces.
  • All holes / openings in the supporting structures are made only by certified companies and in strict accordance with the rules.
  • Legalization of hatches / openings in load-bearing walls requires an appeal to state authorities with the provision of a full package of documents.

Dust-free concrete cutting is a complex task that can only be partially achieved. It is very difficult to get rid of dust completely, but its amount can be significantly reduced thanks to the correct choice of equipment and nozzles, the cutting method, as well as the use of a construction vacuum cleaner and the creation of special devices for collecting dust.

Tips for cutting dust-free concrete

During repairs or construction, sometimes it is required to carry out work on concrete: cut out an opening for a window, a niche, cut walls for wiring. Masters know how many small particles are formed in this case. Cleaning after such events is a very laborious task. We offer you to figure out whether it is possible to cut concrete without dust and how to organize this process.

Concrete wet cutting technology

The use of water allows you to cut concrete “angle grinder” without dust and overheating of the tool. The technology allows solving several problems at once:

  • Extend the resource of the diamond tip,
  • Avoid dust formation,
  • Increase work speed.

One way to keep the water flowing continuously is to secure the hose so that the liquid flows onto the disc. If there is a plumbing in the work area, an assistant can be involved in the process. He will use primitive tools from a plastic bottle to wet the circle. At the same time, the incision site is moistened with a liquid. This must be done carefully so that water is not poured into the instrument.

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

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

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

  • Segmental,
  • Solid;
  • Combined (turbocharged).

The first option is a solid base with a segmented edge. Such a circle is low cost, but not very suitable for working with durable materials. It should also be taken into account that it is used only for dry cutting. The solid disc has a continuous diamond edge so that it will NOT chip during operation. Such a nozzle heats up quickly, therefore it must be cooled with a continuous water jet.

Before buying a nozzle of the right type, you need to figure out what material you will have to work with. Reinforced concrete is reinforced with metal rods, which in the process the cutter can stumble upon. Therefore, if a deepening of more than 10 cm is expected, use discs of increased strength, that is, turbocharged. Fresh concrete is more abrasive, over time the material hardens, its strength increases. This factor should also be taken into account when choosing a cutting wheel.

Segments of the disc are attached to the blade with 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 pay attention to its diameter, which must match the parameters of an angle grinder. The rotational speed of the disk is also an important criterion. It is better if it is higher than the maximum possible indicator stated in the technical characteristics of the “angle grinder”. This will ensure optimum performance.

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 of the “angle grinder”. But what if there is a need to dust the concrete with an ordinary tool without additional options? The simplest solution would be to purchase a casing for a vacuum cleaner separately, or to make a device yourself. You can attract an assistant, who will collect the particles formed during the sawing with a vacuum cleaner.

It is easy to make a convenient attachment from a simple plastic canister, which is often used to sell a car “anti-freeze”. For work, you will need a construction cutter and a container of a suitable size, the neck of which is suitable in diameter to the vacuum cleaner hose.

The manufacturing sequence is as follows:

  • Fitting holes are cut on both sides so that you can easily change the direction of rotation of the disc.
  • A slot of a suitable size is made under the circle.
  • Another hole is cut to attach the “angle grinder” cutter.
  • The hose is docked with the canister neck and secured with an adapter ring with a clamp.
  • “Angle grinder” is placed in the casing and all elements are connected.
  • Cover the unused opening with a lid.

A good dust collector can also be obtained from a simple five-liter plastic bottle. It is attached using a standard protective cover, and the vacuum cleaner nozzle to the neck. This design is suitable for any type of work, except for chasing.

The last tip: in order to make the cut exactly, markings are first applied. Then wooden blocks are fixed along the mowing line. After that, a shallow incision up to 1 cm is made, the stops are removed and the work continues. Throughout the entire process, coolant is supplied to the disc blade. All manipulations must be carried out with goggles, a respirator and gloves.