How to choose a drill under a dowel?

In order to fix the suspended structures on the surface consisting of a dense or loose material in its structure, apply Special dowel fasteners. Reliability of this attachment largely depends on how correctly the size and diameter is selected Dowel. But this is not all – if the hole for mounting the dowel fastening will be too large, durable and reliable dowel dowel with the wall will not work, the device will be loosened over time and will soon fall out.

To avoid such a situation, you need to choose the right drill to drill the wall so that it corresponds to the size of the dowel fastener.

How to choose a drill under a dowel?

Basic principles of selection

In order to correctly select the drill under the dowel, it is necessary to be guided by the following principles.

  1. First of all, it will be necessary Determine the structure of the wall surface, which will have to work: it is dense or loose, from which material it consists, and in what condition this material is at the time of installation. Also take into account whether the work surface has any outer coating. It is also evaluated for density and operational condition at the time of installation.
  2. Pick up the size of the dowel – To this end, determine which weight of the design will have to withstand installed fasteners. Lightweight suspended structures are installed using the smallest diameters of fasteners, and heavyweight products, the weight of which reaches 100 kg, is already being installed using anchor bolts – the dowel in this case does not apply.

How to choose a drill under a dowel?

How to choose a drill under a dowel?

To select a drill that will be performed in the wall in the installation of a dowel fastening, Consider the size of the selected diameter of this mounting device. For ease of execution of such a master task oriented on marking dimensions, which are available both in a dowel and drill. In addition, dowel fasteners also have Elimination information, What also needs to be taken into account when it comes to installing heavy suspended structures.

Drill a hole in a solid monolithic wall recommended using an electric drill and two types of drill.

First drill must have a diameter slightly less than dowel diameter. It is fixed in an electric drill cartridge with a blow and perform a hole in the wall to the desired depth. Then take Second drill, the diameter of which is equal to the diameter of the dowel fastening, and perform the extension of the hole made under the desired size – this work is no longer on the shock, but on the usual installation mode of the electric drill.

How to choose a drill under a dowel?

If you have to work with large drill diameters, then instead of the electric drill it is best to use Perforator.

Using 2 drills of smaller and larger diameter,

  • You will not overload your power tools,
  • In this way, it is possible to obtain a mounting hole, which will have the desired diameter, which will eliminate the possibility of scrolling the installed dowel in the wall, and therefore ensure reliable mounting of the suspension construction.

To work with monolithic concrete Experts recommend using winners or diamond spraying machines.

How to choose a drill under a dowel?

How to choose a drill under a dowel?

In cases where mounting works are performed on the surface having a loose texture, the diameter of the drill is chosen by 1-2 sizes less than the diameter of the dowel attachment.

This approach gives The possibility of tight entry of the fastener element in the prepared hole, and even with small destruction inside the walls occurring in the process of drilling a loose material, the dowel will rise as close as possible.

Concerning Wall hole lengths, then it is usually done by 3-5 mm longer than a dowel length. It is necessary that in the process of mounting a dense fit of fasteners did not interfere with the dust accumulated when drilling the wall in the hole, to remove which is not completely submitted.

How to choose a drill under a dowel?

How to choose a drill under a dowel?

How to choose by weight items?

Correctly select the diameter of the drill must be based on the weight of the suspension design. The higher this indicator, the more durable there should be a dowel fastener. The ratio of the drill and dowel diameter will help determine the following table.

Drill parameters

Parameters dowel

Screw parameters

Diameter, mm

Length, mm

Diameter, mm

Length, mm

Diameter, mm

five

thirty

five

25

3.5-4

6

36

6

thirty

4-5

6

46

6

40

6

56

6

fifty

eight

48

eight

40

4.5-6

eight

58

eight

fifty

eight

73

eight

65

10

60

10

fifty

6-8

10

90

10

80

12

72

12

60

8-10

fourteen

84

fourteen

70

Thus, according to the above table, we see that for a dowel of 6 mm, you need to drill a hole with a drill of the same diameter, that is, 6 mm, and for a dowel of 8 mm I need to take a drill equal to 8 mm.

How to choose a drill under a dowel?

How to choose a drill under a dowel?

Holding Installation of workers’ suspended structures can be carried out using a dowel with a diameter of 4 to 6 mm. Such fasteners will be enough to hang on the wall picture, mirror, wall clock, small book shelf. As a rule, such a small weight of the suspension design is distributed between two point of attachment, and sometimes you can do and one fastener. The length of the wall hole for the introduction of a dowel in this case is performed from 3.5 to 6 cm.

While doing Mounting suspended structures whose weight exceeds 5 kg, We need to take a dowel with a thickness of 8 mm. In this case, the length of the fastener should be from 5 to 7.5 cm. If we mount the design to loose foam concrete, then the diameter of the drill is selected 6 mm, and the depth of the holes make at least 8 cm.

For fastening of simple suspension products, it is most often enough and two fasteners.

How to choose a drill under a dowel?

How to choose a drill under a dowel?

All suspended structures whose weight exceeds 10 kg, considered heavy. In this case, the dowel diameter can be 8-14 mm. To prepare the opening, the drill is selected with a similar diameter and use the perforator in operation, and the drill is taken with a winning tip. To securely fix the suspension design, it is recommended to perform at least 4 point of attachment, and even better if there are 6. Heavy suspended structures can be mounted only on durable wall surfaces, as the loose material due to a large load through a dowel can start collapse.

If the weight of the suspended construction exceeds 60-100 kg, then for installation, dowel fasteners are not used, in this case anchor bolts are used, since they are much higher for the degree of reliability.

How to choose a drill under a dowel?

How to choose a drill under a dowel?

Fastening

Recently, the construction market has developed a tendency to perform many wall surfaces from low-strength materials. To this option can be attributed Plasterboard. In addition, small strength is observed and At old brickwork, as well as aerated concrete and wooden panels.

If you need to install a suspended design to such a low-strength surface, It will be necessary to purchase a dowel fastener, which consists of a nylon cylinder and screw. The diameter of such an attachment is more than 10 mm. To get a reliable coupling with a wall, the length of the hole for mounting makes at least 60 mm.

The drill in this case is chosen by 1-2 sizes less than the diameter of the dowel fastening, after which the wall is neatly divided into the wall hole with the help of a conventional hammer dowel fastener.

How to choose a drill under a dowel?

How to choose a drill under a dowel?

Working with loose wall surface, The master must remember that the shock motor in this case cannot be applied, since this load may cause the destruction of a large segment of the wall. Even if the external damage is not noticeable in the process, then in the presence of internal disorders of the material connections inside the wall can not even doubt.

If you take the diameter of the drill equal to the diameter of the dowel fastening, then the dense landing will not work, and the mounted dowel will fall out over time. So that the dowel fastening can be driven into the wall hole, it makes a little less, but the strength of such fasteners will be high and reliable.

How to choose a drill under a dowel?

    When working with a delicate wall, drove a hole starts with a diameter of 3-4 sizes less than a dowel. Then take the drill on 1 size more and expand the wall hole, bringing it to the desired diameter. Such a drilling with a consistent expansion makes it possible to preserve the integrity of loose aerated concrete material and without unnecessary destruction to perform high-quality fastening of the suspension construction.

    How to choose a drill under a dowel?

    How to choose a drill under a dowel?

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