Статьи

How to drill a hole in the concrete under the socket correctly

  1. Drilling holes in concrete with a perforator
  2. Drilling holes with a crown for podrozetnikov
  3. Drilling holes with a crown and drill
  4. Drilling holes with a crownless perforator
  5. Hole under the socket using grinders
  6. Conclusion

Drill a hole in the concrete under the socket

Drilling holes in the concrete under the socket is not easy, especially in the absence of special equipment. Therefore, it is often necessary to “reinvent the wheel” and use “old-fashioned ways”. But not everyone knows about them, so in our article we decided to consider some of them in more detail.

Drilling holes in concrete with a perforator

There are several options for drilling holes in the wall using a perforator, and they all depend on the density of concrete, as well as the availability of the necessary tools. We begin our story with the easiest ways, and finish the most time consuming.

Drilling holes with a crown for podrozetnikov

If you do not know how to drill a hole under the socket in the wall, then just ask in the store a crown for podrozetnikov. This is a completely simple device that greatly facilitates this time-consuming work.

This is a completely simple device that greatly facilitates this time-consuming work

Crowns for drilling holes for the socket

Crown for podrozetnikov consists of four elements. The first is the basis. It is a pin for mounting in the punch, with a flange for twisting the crown. The crown is a piece of pipe with a diameter of 68 to 80 mm.

At its ends, on the one hand there is a thread for fastening with the base, and at the other end - carbide cutting elements. In some crowns, these cutting elements are diamond coated, which increases their service life. The third element is the drill bit, which is also fixed in the base with the help of the fourth element - the screw. Purpose of a drill: centering of a crown.

Purpose of a drill: centering of a crown

Crown for drilling concrete under the socket

The price of such a crown is within reasonable limits. Therefore, if you started a repair with the transfer of electrical points, we strongly advise you to buy one. It is always useful in the economy.

Produce wall markings

In order to drill a hole using such a crown, the following operations should be done.

First of all, we note the place of installation of our new outlet.

We need to measure out the center of the required hole.

We drill the center of our hole

At the next stage, using a perforator and a conventional drill for concrete, as in the video, we drill a hole at this point. At the next stage, using a perforator and a conventional drill for concrete, as in the video, we drill a hole at this point

Install the crown and drill the required hole

Then collect the crown, and set it on the punch.

The centering bit of the bit performs slightly above the edges of the bit.

It is inserted into the previously drilled hole.

The end result of the crown

Next, turn on the punch, and drill a hole for podozetnika.

Ideally, the crown will enter the wall at 2/3, and we will get a beautiful even hole.

Drilling holes with a crown and drill

Using the crown, you get the required hole. But it will not always be so easy to do. The fact is that with a brick and some types of concrete, such a crown copes very well. But sometimes she is powerless. And then you have to invent another way, how to drill a hole under the sockets correctly.

So:

  • If the crown is bad, or does not cope with your concrete at all, then you will have to use a slightly different method. We analyze it in stages.
  • First of all, as in the first version, we find the center of our future outlet. Then we drill a hole for the centering drill. Take the crown and try with it to drill a hole.

The crown leaves a mark on the wall

  • This did not work out for us. But on the wall there are clear traces of our future hole. We need them. Now, using the usual drill bit on concrete, on the edges of the future hole do-it-yourself a few holes. The greater the number, the easier it will be then, so make about 20 such holes.

In the photo, the approximate number of holes that we need to drill

Now we put our crown on the perforator again, and, already using it, we again make a hole for the underside. It should go much faster.

Note! If you are too lazy and made a small number of holes with a drill, then when working with a crown, it is quite possible jolts. Therefore, hold the punch tight.

Drilling holes with a crownless perforator

But sometimes it may happen that there is no crown, and the hole is necessary right now. Therefore, you should know how to drill a hole for a socket in concrete without a crown.

In this case, we will use the usual drill and chisel, or the corresponding nozzle on the hammer drill, if it has the function of a jackhammer.

  • To use this method, we need to outline our future outlet . This can be done by attaching to the underside, or using a rope and a pencil.
  • Then along the contour of the future hole, as in the variant described above, we make many small holes . In this case, it is desirable that these holes be more than 20 pieces.

We make from 10 to 20 holes along the contour of the future hole

  • Then using a chisel or the corresponding perforator nozzle, we begin to knock out the remnants of concrete between the holes left by the drill . The process is lengthy and time consuming, but there are simply no easier options.

Knock a hole with a chisel

Hole under the socket using grinders

Sometimes it may happen that the perforator is not at hand, and it is necessary to make a hole under the socket. In this case, you can use the grinder. Of course, this is not the best option, but, in extreme cases, it is quite applicable.

Of course, this is not the best option, but, in extreme cases, it is quite applicable

The hole for the socket made by the grinder

So:

  • To use this option, you first need to outline the contour of the future outlet . To do this, you can use a regular pencil.
  • The next step is to prepare for work grinder for concrete . The instruction advises to wear glasses, a respirator, or at least a gauze bandage. Head is also better protected headgear.
  • After that grinder, with a circle on the concrete of the appropriate diameter, make cuts in the extreme points of the future hole. The cuts should have an appropriate depth. The minimum number of cuts to get a square is four, but you can make a figure more close to the circle.

Note! When working, in no case can not change the position of the grinder relative to the wall. This can cause the disk to break and scatter fragments. This, in turn, can lead to very deplorable injuries.

  • After that, using a conventional chisel and a hammer, we begin to knock out the concrete in the center of the cuts . Labor is laborious, but there are no other options.

Conclusion

Now you know how to drill a hole for sockets in a variety of conditions. But it is better not to reinvent the wheel, and use the appropriate tool for this.

Moreover, many of the methods described above are quite dangerous, especially the option using the grinder. And not one hole under the outlet is not worth your health.

Новости

Где купить объектив на телефон

Многие утверждают, что качественная любительская съемка с телефона невозможна, либо это по крайней мере затруднительно при неидеальных условиях. Вероятно, многие профессиональные фотографы бы с этим