Drilling holes in concrete tool. Economical way

Concrete drilling tools

Diamond drilling or drilling is today the most convenient and fastest way to drill holes in concrete and reinforced concrete structures.

Diamond drilling is a fast and easy way to drill holes in concrete and reinforced concrete slabs.

Drilling is commonly referred to as making small diameter holes with a drill. Drilling is the making of holes with large diameters by using special drill bits. Sometimes holes are drilled with a rotary tool or simple drill, using a diamond tool.

Advantages and disadvantages of diamond drilling

Diamond drilling produces smooth and accurate holes in concrete.

  • The holes are precise and round;
  • The drilling and hole-drilling process is almost silent;
  • All that is needed is 220 W mains electricity and running water;
  • no dust;
  • Maintain the load-bearing capacity of the walls;
  • high drilling and drilling speed;
  • No cracks and chips in or out of the holes;
  • drilling depth of up to 3 m with a diameter of up to 1 m;
  • possibility of working on curved surfaces.
  • The highest productivity can be achieved only by increasing the axial feed force of the tool and its peripheral speed;
  • Diamond drilling does not allow even the slightest twist or run-out of the tool;
  • The tool needs a running water supply for cooling.

Useful tips

Drilling a hole in a concrete wall. the work is not very difficult, but it must be done carefully. If something goes wrong, there can be serious problems. The main thing. do not hurry and try not to make mistakes.

To drill correctly in concrete, you must adhere to the following recommendations:

How to make a hole in concrete

When making a hole in a concrete wall, proceed carefully, keeping safety in mind. In this case, not only will it be possible to do without specialists, but also without injury.

How to drill holes in concrete

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Knowing how to drill holes in concrete is a fairly useful and handy skill. With it, you can easily hang shelves, hang pictures, install light fixtures, and do a lot more housework in a quick and safe way. The process of drilling concrete is quite simple, but with the right tools and understanding of the principles of work, you will save yourself a huge amount of time.

  • In case of buying the tool it is usually reasonable to pay more money for more powerful peorator (with impact force not less than 7-10 J) of well known brand. [3] X Information Source Other useful features to consider include variable speed, adjustable drilling depth, a comfortable grip on the tool, and the availability of a second grip.
  • Observe safety precautions. Wear safety glasses to prevent concrete chips from getting into your eyes, earplugs to prevent damage to your ears, and thick work gloves to protect your hands from excessive friction and work-hot drills. For long jobs with a lot of dust, it is also recommended to wear a respirator.
  • It is necessary to use special drill bits, or so-called drills, marked SDS or SDS-MAX (for drilling holes up to 1.5 cm in diameter) or punching drill bits (for holes of 2 cm or more in diameter) for peorators. [5] X Source of information
  • Reinforced concrete is much harder to drill if the depth of the hole has to be greater than the depth of the steel reinforcement in the concrete. Once the concrete drill bit reaches the rebar, replace it with a metal drill. [6] X Source of information Slow down and stop intermittently during work to prevent the drill from overheating.
  • Since concrete is a hard and dense material, a hole 2.5 cm deep is sufficient for fixing screws on dowels for hanging light objects in the wall. Heavier objects will require longer screws with dowels or even anchors, the minimum depth of which should be indicated on the package.
  • Increase the hole depth you need by 5 mm so that there is room for any dust that may have accumulated during drilling. [8] X Source of information This is not necessary if you are going to dust the hole later (read more about this). [9] X Source of information
  • When working with hollow concrete blocks or thin concrete surfaces be sure to read the instructions for the fasteners used. Some plastic anchors require full-length support and can easily fall out if inserted through a hole in a thin wall.
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Get your hands on the drill correctly. Hold the drill with one hand like a gun, with your index finger on the trigger. If the drill is equipped with an extra handle, grasp it with your other hand and use it to grip the tool more securely. Otherwise, simply grip the drill from underneath with your other hand closer to the back of the body.

Mark the point for drilling the hole. Using a soft pencil, mark the wall with a dot or an X on the spot where you want to drill the hole.

  • If your project involves a large-diameter drill bit, consider using a smaller-diameter drill bit for the pilot hole. In this way you can increase the stability of the drill during further work. [11] X
  • Apply enough pressure to keep the drill in position, but do not press the drill too far forward (this increases wear and tear on the drill bit and can lead to breakage). How much pressure to apply to the drill, you will understand from your own practical experience.
  • Periodically turn off the drill and remove it from the hole to allow the tool to cool for a few seconds. This applies in particular to conventional drills without impact function, because they overheat easily from prolonged use.

Distinctive features of concrete drills

There are several criteria to distinguish a drill for concrete work from tools for drilling other materials.

  • Wood drill bits have the sharper tip that plunges into the material during the initial processing step.
  • The tip of the tool for working on metal has a tapered shape, it does not have a sharpened part.
  • Rather blunt tip of concrete drills is made of pobedite plate.
  • The drills for metal processing it is 140 °.
  • For tools used for processing brass, bronze and duralumin, this angle is 110-120°.
  • In drills, with which the processing of products made of aluminum, copper, wood and plastic, this angle is 90-100 °.
  • Surface of drills used for metal processing is black.
  • Woodturning tools have a normal metallic color.
  • The tool, with which the drilling of concrete structures is performed, has a white metallic color.
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And a little video on what to do if you bump into rebar while drilling a concrete wall.

Tools for drilling

It is possible to drill properly through a concrete wall:

The need for drilling

The need to work on a concrete surface arises:

  • The need for fastening furniture (kitchen cabinets) to the wall:
  • Hanging mirrors, pictures, art installations;
  • installation of floor plinths;
  • fixing of metal or wooden slats for plasterboard, plywood paneling
  • Socket installation and other operations.

Impact drill

The impact tool is a modification of the conventional drill that works only in drill mode. Adds reciprocating motion, which creates a hammering effect. The drill bit produces torque and at the same time axial displacement with high frequency and low amplitude.

The edge of the cutting part, contacting with the concrete, causes the formation of microcracks. The latter increase under the influence of the rotary motion of the drill. There is a destruction of the monolith, the formation of concrete chips (dust). the process of creating a hole is carried out.


Is a manual impact machine for making holes, grooves, recesses. The main difference from the principle of the drill, the tool does not drill, but drills (chisels, pierces) a cavity in a solid material. That is, the process is similar to using a mechanical chisel.

Peorator is a highly specialized tool designed to perform operations specifically on hard and durable building materials on the base:

power, more capacity than a drill. Makes it possible to create deep (up to one meter) holes. Diameter goes up to 30~50 cm.

A kind of electric tool

Holes in concrete can be drilled with a battery-powered screwdriver. Power should be at least 750Vt, power supply voltage of 14~18V. Professional series include a drilling function with impact function. But, because of limited battery capacity, the amount of work performed is much less than with an impact drill or a rotary hammer.

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How to make a bigger hole

For some jobs in construction, it is necessary to create large diameter holes. For example, for installing sockets, boxes and distribution of all ventilation wiring. It is possible to make several small holes, and then connect them, using a chisel for this purpose, but in this case, the hole itself will not have completely smooth edges.

There are situations where you have to be as careful as possible. In this case, a special drill bit for working on a concrete surface comes in handy. These tools differ in size from each other. If the drills are often used, they are only good for a certain period of time. hard surfaces such as rebar or granite are the main reason for their quick breakage.

How the external sewage system is formed in a private house

Universal version of the sewer system is created as follows:

  • Steel pipe through the foundation is laid in a trench, which is located in the street next to the house.
  • Next, a special outlet is lined in the trench, which in turn conducts the water from the outer pipe. They are connected by the principle of “in the bell” or with a set of fittings. Of particular importance for the tightness of the connection is the material from which the sewer pipes are made.
  • Next, all internal transition pipes are attached to the outer pipe that passes through the foundation. They are arranged in such a way that there is a slight slope towards the main drain (2-5%).

Please note! Each of the pipeline elements must be made of reliable materials, resistant to considerable mechanical stress. When calculating the pipe, it is especially important to calculate its strength, as it will be affected not only by the weight of the ground cover, but also by the concrete base of the house itself.

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