Drilling power sockets made easy


For the installation of sockets and light switches under plaster, precise round holes are required. Can drills are "sawing" wreaths that drill this hole by means of rotation. Depending on the condition of the wall, the teeth must be made of metal or diamond.

Steel or diamond gear rim

Anyone who has ever unscrewed a socket cover, knows the round shaped plastic shell, which is in the wall hole. The standardized flush-mounted boxes form the shell for the inner part used later. For the cans, even, round holes must be drilled in the wall.

For a wall made of plasterboard or other cladding panels, only a few millimeters deep hole must be "milled". For this purpose, drill bits or box drills made of steel are used with an encircling ring gear. For a solid wall, the sprocket must be harder. Mostly he is occupied with diamond splinters.

Machine performance and drilling depth

When using a can drill, the rotary motion of drilling is translated into a "cutting" force. As a result, relatively much power is lost. To successfully drill socket holes, the drill must have at least 800 watts of power. For concrete walls, outputs from 2000 watts are essential.

In addition to the diameter of the hole, the depth must also be calculated. While brick walls have the only risk of encountering a cavity, steel reinforcement can be achieved on concrete walls. With the impact on the reinforcement, the maximum drilling depth is reached. If it is not sufficient for a standard socket, a special box with a small installation depth can be the alternative. The panel will later stand out between five and ten millimeters and allows at least a partial flush-mounting.

How to drill sockets

1. Select a drill bit for wood or plaster

In wood or plasterboard walls, a drill with metal ring is clamped in the drill. The size must correspond exactly to the socket and is 68 millimeters by default.

2. Choose drill for stone or concrete

Solid walls require a drill collar with diamond teeth. For concrete, a size addition of four millimeters should be chosen, for masonry up to fourteen millimeters.

3. Measure and mark outlets

The center of the socket should be marked with a pencil cross. When placing double or multiple sockets, take the product dimensions into account as specified by the manufacturer and mark the corresponding socket center points.

4. Only drill, never hit

Rotary hammers or impact drills are only suitable for drilling the socket when the hammer mechanism can be switched off. The drill collar or can drill can only "cut" by means of impact-free rotation.

5. Drill hole

Place the guide drill in the center of the drill collar on the mark and start the drill by applying light pressure to the wall. Quickly bring to maximum rotation and "cut" the hole with even pressure.

Tips & Tricks

The final and aligned placement of the socket is done in massive walls by re-plastering slightly larger holes. You can easily counterbalance a diameter tolerance of up to 14 millimeters with gypsum.


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