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Surely many have faced a problem when you need to drill a hole in a concrete wall. There can be a lot of reasons - maybe just hanging a picture, or installing hanging furniture, air conditioning. As you know, concrete is a very durable material, so you cannot drill a hole in the wall with a conventional drill. Adding complexity is the fact that reinforced concrete walls are not homogeneous - both reinforcement and crushed stone can meet in the path of your drill.
Points to remember when drilling a concrete wall
Find the right tools for drilling concrete - an impact drill or hammer drill. The drills must be special for working with concrete or diamond-coated. The diamond drill is inherently versatile and can drill equally well in both metal rebar and concrete.
Make sure that there are no communications through the place where you marked the hole, for example electrical wiring... Wiring typically runs vertically along walls from outlets and switches and horizontally from chandeliers to junction boxes.
Mark the place where you are going to drill the hole with a pencil. Using a construction dowel or a core drill and hammer, make a small notch in the wall so that the drill does not pop out during operation.
Align the drill tip with the previously marked indentation and start drilling. Do not set the drill speed to a high speed; you will get better results when drilling at a low speed.
To reduce the amount of debris and dust in the work area, you can put a small tin can or a plastic cup, or stick a sheet of paper folded in an envelope to the wall with adhesive tape, thus avoiding a large amount of dust during drilling.
Cool the drill bit periodically, as tool steel becomes brittle when heated. For cooling, you need a small container with cold water... Also, when working with a hammer drill, take breaks - after 10-15 minutes of work, the same break duration, this is done due to the fact that when drilling concrete, the tool is exposed to heavy loads.
If you have a conventional drill, without shock loading function, use a punch, it is a rod with a triangular tip, also made of carbide. The punch is necessary in order to break concrete in the work area. Just insert it into the hole and hit it a few times with the hammer.
On a note! To make it easier for yourself in the future, when drill concrete wall , make the hole a little deeper than the length of the dowel by about a centimeter. This will make it easier to fit into the hole and you will not have to apply additional effort when driving in the dowel.
When working with a drill or hammer drill, remember that you are holding an instrument of increased danger in your hands; you need to work with it with utmost care. And do not forget about protective equipment: glasses will protect your eyes from the possible hit of small concrete fragments, and headphones will protect the eardrums from high level noise.
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During repairs, communications or redevelopment, it becomes necessary to make different amount holes in the walls. The drilling tool and technique will differ depending on the wall material. Before drilling a brick wall, it is recommended that you use some practical advice, since such a durable material as brick sometimes requires a special approach.
The wrong choice of tool and type of drill will not only not allow you to get the desired result, but can also ruin the equipment. Two types of equipment are used to drill bricks - a hammer drill or an impact drill. Right choice drill, first of all, lies in its power. The minimum power of this tool should be at least 600 watts, and the minimum number of revolutions - from 2500 rpm. It is better if the mechanism has a reverse rotation of the drill and the ability to smoothly adjust the power. Drilling holes in the brick should be done with a hammer drill, since the walls of this material are very strong against static loads, and are subject only to shock with a load of a dynamic nature. If you drill with a conventional drill, the process will be long and ineffective, since the edge of the drill will not be able to catch on internal structure bricks. This can lead to overheating of the tool and breakage of the drill.
In addition to the use of electrical equipment, there is the possibility of using hand tool, - the so-called bolt. It is a pipe with teeth at the end, through which a hole is punched by the application of human physical strength.
In addition, you will need the following tools:
- Drills or drills
To drill holes in brick wall was effective, it was necessary to use drills with a specific diameter, made of carbide material. Their difference from the usual ones is the presence of a diamond or victorious cutting edge. With a hole depth up to 15 cm, drills with a diameter of 0.6 or 0.8 cm can be used.The maximum hole diameter that a brick drilled with drills can have is 1.5 cm.
Victory drill for brick walls
If you need to drill through hole much larger diameter, it is better to use a drill that is installed on a hammer drill and an impact drill. The size of the drill depends on the depth of the hole. If you need to drill a hole in the wall 60 cm wide or more, to speed up the process and make it more efficient, it is recommended to use drills of the same diameter, but different lengths at different stages of drilling, for example, start with a drill 15 cm long, and at the final stage - 50 cm long ...
The maximum drill hole diameter can be up to 2.8cm.
- Rotary hammer crowns
For the installation of boxes for sockets, switches, it is necessary to create a niche. In this case, perforator crowns are used, which are made of durable steel and allow you to get holes of large diameter. Drilling with crowns is carried out without the use of the impact function, and their choice depends on the diameter and number of teeth.
Crown on a perforator - Dowels for fasteners
- Dowel screwdriver
- Protective glasses
- Cooling water tank
- Core tool for marking when drilling with a drill.
- Hammer
- Victory glass
- Metal detector
Drilling technology
There are three ways to drill a hole in a brick wall: manual, electromechanical and automatic.
However, before starting work, it is necessary to study the location of the wiring, since accidental hitting the wiring line will not only damage it, but can also shock a person. Most often, electrical wiring is located vertically or diagonally relative to sockets and switches. In case of existing doubts, it is worth using a special device for detecting wires. hidden wiring... A portable metal detector can help you find aluminum wire or copper, located no deeper than 1 cm.
A portable metal detector will help detect hidden communications Hand Drilling Technology
With absence electric tool holes can be drilled with a bolt. For this, places are preliminarily marked by drilling with a punch. After that, the bolt, which is applied to the wall at an angle of 90 degrees, is hit with a hammer. Every three strikes, the bolt is turned, and the remains of bricks are removed from the pipe. Thus, the hole is knocked out before it reaches required depth.
Electromechanical process
Mechanical drilling is done with a hammer drill or hammer drill, and the process is the same.
First you need to decide on the type (through, blind), depth and diameter of the hole. This is necessary for the correct drill or drill bit. If you find it difficult to maintain the same distance between the holes, you can use a template. The stencil is made of plywood, chipboard, plastic and other materials at hand. To use it, you need to fix the sandpaper on one side on double sided tape or glue, then lean against the wall and drill.
After the type and diameter of the future hole has been determined, a core marking should be applied. The drilling process will be easier if you make it in the seam between the bricks. Core cuts are made in order to fix the drill and facilitate its entry. When drilling with a drill, hold the tool perpendicular to the wall, pressing gently on it so as not to break the drill or drill. From time to time the drill must be taken out for cooling in a container with cold water.
If necessary, drill a hole with a diameter greater than 18 cm, use a perforator with diamond core bits. If these are not available, you can use conventional diameter drills. For this:
- The place of the future hole is outlined, its contour is outlined with a pencil.
- Drilling is performed on the outside of the line, the number of holes depends on the diameter of the contour. The diameter of the drill itself should be 0.8-1.0 cm, the pitch of the holes along the contour should be 1.0 cm.To perform the work more accurately, you can use drills of even smaller diameter, but then the process will take longer.
- With a chisel and hammer, a sample is taken from the drilled contour.
If you need to drill through a thick wall, you can do this in two steps: first, the drilling process, as described above, is carried out on one side of the wall. Then, the center of the resulting hole is drilled through. After that, on the other side of the wall around the intended through center, marking is performed required diameter, the process is repeated.
Automatic process
With the help of professional, expensive equipment, diamond drilling is carried out. In this case, it is desirable to have special skills and qualifications. With the help of such a tool, the drilling process is fast, accurate, practically silent, it can be carried out at different angles to a depth of 40 cm, while a smooth hole is formed, without chips or cracks. This method does not create a lot of dust and dirt, since the tool is equipped with a nozzle for cooling the drill and removing the dust.
In most modern buildings, walls and ceilings are usually concrete, and this material is extremely durable and therefore difficult to drill. In addition, often during work, you can easily stumble upon reinforcement, crushed stone and other inclusions that are part of the concrete or are provided for by the structure. It is necessary to make holes in concrete, as a rule, during construction and carrying out renovation works, for example:
- when decorating premises;
- during the installation of air conditioners;
- when installing built-in furniture;
- during the installation of electrical wiring;
- when installing plumbing.
So how do you drill concrete with a drill? For a number of reasons, when working with this material, you may encounter some difficulties: for example, concrete panels have a heterogeneous structure, which significantly complicates drilling.
When getting started, it is worth choosing a tool that will do the job better. It can be a drill or a hammer drill. A hammer drill will do some work better, since punching concrete or stone surfaces is its main function. With this tool, you can make large holes, while the most powerful impact drill cannot drill holes larger than 15 cm.However, sometimes a drill will be the best tool for performing work, since a puncher can crumble a surface. You can also get by with a drill if you only need to make a few holes, and the punch is not at hand. However, when working with concrete with this tool, it is important to remember that in this case it is necessary to use a victorious drill with a tip that is coated with a carbide compound.
Today, the most common method for drilling concrete is the method using impact drill: so you can quickly and with high quality to execute necessary work... How to drill concrete with a hammer drill? It is advisable to use this tool when performing small amounts of work, since in this case you will not need additional devices... Simply switch the drill from normal rotary to hammer rotation. In an impact drill, drill movements occur due to the interaction of special ratchets with teeth. small size... In addition, for better drilling, the installer must exert considerable physical effort, since the drill has to be pressed.
When drilling concrete with a drill, the type of nozzle used is of great importance. Today, the concrete bit is produced in two main versions: for hammer drilling and non-hammer drilling. According to their design and materials used, these nozzles are of the following types.
- Drilling teeth with hammer function a. Their cutting edge consists of individually brazed teeth, for the manufacture of which very strong alloys are used. They also have SDS shanks for attaching core bits to drill chucks. The teeth strength is very high and allows cutting metal, however, the impact mode leads to unacceptable loads on the brazed joints, and this contributes to their destruction. For this reason, these bits can only be used for drilling between reinforcement. reinforced concrete slabs or in brick walls.
- Diamond core bits for hammerless drilling... Technologically, these bits are more advanced when drilling in a hammerless mode. They have a smooth abrasive edge with small notches, formed by spraying fine diamond or corundum sand. The crown easily copes with the reinforcement of concrete slabs. Its working diameter is 12-650 millimeters, making it possible to drill holes up to 1.5 meters deep. Nozzles with a diameter of up to 100 mm can be used with household and professional drills, as well as with drills designed to work without forced cooling. Bits with a significant diameter and soldered from diamond segments are used in professional drilling rigs where there is water cooling, as well as forced removal of waste from the hole using a compressor.
- Bits of standard KS with diamond coating... They have protruding segments on the cutting edge, and diamond crystals are embedded on the working surface of these segments. These bits successfully replace serrated carbide bits. They are used to drill holes in slabs, rock, and monoliths made from strong grades of concrete.
Choosing a bit for concrete: criteria
When choosing crowns for concrete, the following criteria should be considered.
- When purchasing crowns for drilling holes in concrete walls for switches and electrical outlets it is worth clarifying the diameter of the mounted metal or plastic socket boxes. It should be equal to 68.0 millimeters.
- When purchasing nozzles, it is necessary to clarify that they are intended for drilling concrete, since there are similar crowns that furniture makers use to drill wood and chipboard (such crowns are not able to cope with hard materials).
- When choosing gear attachments, carefully inspect the attachment of the teeth. The more fit they have, the longer the crown will last.
- The nozzle for the working diameter is selected based on the size of the holes in the concrete and the power of the hammer drill. On a drill, the power of which is 1 kW, nozzles are usually installed, the diameter of which is up to 25.0 cm. Use crowns that have large diameter is not recommended as it could damage the low-power motor due to overloading. This must be taken into account when using commercially available adapters to fit large bits to small chucks.
- Before purchasing, you should look at the nozzle shank, which is solid (to be installed in jaw chucks) or with a different number of open and closed slots corresponding to different options fastening systems SDS.
So you learned about how to drill a concrete wall with a drill, as well as about the types of attachments used. It remains to use theoretical knowledge in practice.
Good day, Victor!
In the life of every person there are situations when you need to hang a picture, lamp, shelf or something else. And if there is no puncher, then the question arises: how to do this and is there any point in spending money on this device, taking into account the fact that, perhaps, next time it will not come in handy too soon. You can torment a poor drill for a long time or ask friends, neighbors or relatives for a hammer drill. Consider also some other interesting options.
What are the experts talking about?
There is no doubt that concrete structures are strong enough and difficult to drill. To this it is worth adding that you can stumble upon crushed stone that is part of the concrete mixture, from which slabs are made.
You can solve the issue of drilling holes in the following ways:
- with the help of a drill, which has an impact function with the use of a victorious drill;
- another method is diamond drilling, but here you need to be extremely careful not to break the entire wall.
Immediately it must be said that it is quite difficult to make a hole in the concrete wall with a simple drill, so at the beginning of work it is worth buying special drills with plates that are made of pobedit, that is, a material that can cope with concrete and brick. When working with soft materials, these drills should not be used as they will simply crumble rather than cut.
Helping the home master
If you need to drill a small number of holes, you can use a drill that does not have an impact function. In the case when a dense inclusion is found in the concrete of the wall, you need to crush it with a punch - a pin made of hard metal, equal in diameter to the future hole. At such a moment, you need to insert a punch into the hole and hit it with a hammer, while trying to crush difficult areas and increase the hole in depth. You need to periodically turn the pin. Then you need to continue to work with a hammer drill.
All these actions should be done until the very moment, until the hole becomes the required depth. The described method is undoubtedly quite complicated and also tedious, but if you want to make a couple of holes in the wall, then it is quite suitable.
Another drilling option
Another option is to consider drilling concrete using universal drills that are diamond-coated. They perform well on a wide variety of durable materials. They can be installed on a simple electric drill, as well as on any other tool with the vibration function turned off.
It is worth working with the drill very carefully, otherwise it will break down quickly enough. The drill tip should be periodically wetted with water so that it does not smoke and fail completely.
Thus, in order to drill holes without using a punch, you need a drill that has an impact function, and you should also immediately stock up on winning tips. The diameter of the holes when drilling with a drill should not be more than 12 millimeters in diameter.
I would like to wish you success in the renovation!
Sincerely, Alexander.
The renovation process in an apartment includes many works associated with creating holes in the walls: a tool can be used for this. of various designs and power. Many craftsmen and those who are going to carry out repairs on their own want to know how to drill a concrete wall with an ordinary drill, and if it is possible at all. For such work, a perforator is usually used, but it is not always suitable for this, besides, if the tool is to be bought, then its cost is much higher than that of a drill.
Features of the choice of tool
In most cases, it is better to use a rotary hammer for better: it has increased power, is designed for punching hard surfaces, and allows you to make large holes in diameter. The use of the tool is impractical in the following cases:
- the need to drill the wall to a depth of 10-12 mm;
- work with, which crumbles when processing with a perforator;
- in work it is required to make no more than 10-15 holes.
Before drilling a wall, it is important to choose the drill itself: it should not be hammerless, since this type is ineffective when drilling concrete, the nozzle and cartridge become unusable almost immediately. The nozzles themselves must be victorious, designed for concrete works, tip - with hard-alloy coating.
In some cases a good decision there will be an acquisition of a hammer drill: the device is more expensive than the classic model, but it has increased power that can be adjusted.
Which attachments to choose?
Before drilling a hole in a concrete wall, you need to select a nozzle of the appropriate design. The following varieties are used for work:
- Impact type tooth crowns for drilling. When working with concrete, it is recommended to use a variety of separate soldering teeth, made from the most durable metal alloys. Many bits are equipped with SDS shanks for installation in keyless drills. The drills are well suited for concrete walls, however, upon contact with metal, they can begin to collapse, therefore, before drilling a reinforced concrete wall, you need to check that there is no reinforcement in the place of work.
- Diamond core bits, which are designed for hammerless drilling of holes. Such nozzles are more modern, with their help it is easier to make a hole in a concrete wall. The edge of the crowns has an abrasive structure and special cutouts; during production it is processed by spraying diamond chips or corundum. Before making a hole in the wall, you just need to select the required length of the nozzle: in everyday life, varieties with a diameter of up to 100-120 mm are used, in professional work larger crowns are used. Distinctive feature is the ability to drill without the risk of damaging the fixture with fittings.
- KS-bits, which have a cutting edge with crystalline diamond particles. Such nozzles are used for most solid walls, including drilling with them. concrete plates, external walls and stone structures.
Before drilling or a partition, you need to make sure that during the work the wires or cables, if they are laid inside, will not be touched.
How to properly drill concrete with a drill?
Typically, such work is performed in the following cases:
- rough finishing of premises;
- installation of built-in furniture and appliances;
- installation of wiring and plumbing when communications are required to be concreted.
When using a victorious nozzle in the course of work, it is required from time to time to use a metal punch, which is selected to the size of the hole being formed. Such a tool allows the drill not to jam when the drill is deeply immersed: the punch is placed in concrete and deepened by hammer blows to make a hole in the wall, destroying the seal.
This process is quite long; an alternative can be the use of diamond core bits: Drill fitted with these attachments will not get stuck in concrete.
Algorithm of actions:
- Before drilling a hole in the wall, you need to install the desired nozzle, after making sure that the tool is in good working order and the drill is intact.
- It is required to drill the concrete carefully; when using low-power equipment, the duration of the continuous operation of the drill should not be more than 10-12 minutes. If the drilling is delayed, it is required to take breaks so that the motor of the device cools down.
- After drilling the concrete wall, it became clear, then in addition it is worth considering that for each new hole it is required to process the nozzle. You can moisten the surface with water to facilitate the procedure and prevent the metal from deforming.
The whole process of work can be seen in the video:
If you encounter a jammed drill, do not pull it out by force; this will break off the fixture, leaving the tip in the concrete. The nozzle needs to be disconnected, select a crown with a reduced diameter and use it to pull out the stuck element.
Before deciding how to drill concrete walls and getting started, you should pay attention to the following recommendations:
- if the hole diameter exceeds 12 mm and the depth is 10-11 cm, it is better to use a hammer drill or a hybrid device (drill-hammer drill);
- if holes are made for plastic dowels, the depth should be more size the fastening element by 7-10 mm, since concrete dust and small particles of stone remain inside;
- it is recommended to start work at low speeds so that the nozzle does not move due to the increased torque, and the impact mode is turned on when the drill goes 2-4 mm in depth;
- the dust generated during the drilling process can be removed with a vacuum cleaner, it is advisable to do this in the process, periodically stopping the drill and cleaning the hole from concrete particles;
- it is imperative to observe safety precautions during work: it is required to wear gloves to eliminate the risk of sliding of the handle and goggles so that the crumb does not get into the eyes and damage the mucous membrane.
In most cases, a concrete wall is drilled with a perforator, without a drill. If, as part of the repair, you need to make no more than 15-20 holes or the wall is made of foam concrete, using a drill - optimal choice which will save you time and money.
Before punching a hole, you need to make sure that there is no wiring in this place, and check whether the nozzle is suitable for such work (the duration and efficiency of work depends on which drill the drill is equipped with). When deciding how to drill the wall, you should pay attention to the victorious crowns: with such a drill using a drill, you can easily punch a hole up to 10-12 cm deep.