Each master at least once encountered the need to drill concrete. This raises some questions, for example, what equipment and technology to use. If you don’t approach the task correctly, the result may be a failure.
Choosing a concrete drilling tool
If you want to drill holes in concrete, it is recommended that you first decide on the tool. In this case, you can use one of two options, as the first acts a percussion drill, in the role of the second - a perforator. The latter solution is preferable, since the main task of this tool is to punch holes in stone or concrete. Using this equipment, you can get holes with a fairly impressive diameter, while even the highest quality impact drill will not be able to make holes with a diameter of more than 12 cm. However, if you have to work with foam concrete, then in this case it is necessary to choose a drill, as a puncher just crash against the wall.
If you have to drill holes in concrete, then you cannot use a hammerless drill for work, it is not only useless, but can also cause a tool breakdown. If you have to make only a few holes, then for the lack of a punch, a drill is also suitable, whereas if you need to create a lot of holes, then renting or purchasing the appropriate equipment will be necessary. In this case, it is not only about saving time and effort, such a requirement is due to the fact that devices of this type are not designed for high loads, and if the equipment is mismanaged, it may become unusable. If you still have to use a drill, then you need to use a drill bit designed for concrete work. The tip should be coated in the form of carbide spraying.
Diamond drills and other devices
Drilling holes in concrete can be carried out using ring drills, which have a diamond coating on top. They are designed to work in tandem with drilling rigs that are capable of making holes with a diameter of 25 centimeters. It should be noted that such devices are quite expensive, so it makes no sense to purchase them for domestic use.
If during the repair there is a need to make a place for a socket or switch, then it is worth using crowns designed to work with concrete. Around the circumference of the working face and they have soldering made of hard metal alloys. Their diameter can vary from 35 to 120 millimeters. However, crowns with a size of 68 millimeters are most commonly used. This is due to the fact that it is precisely this diameter that is required for installing outlets.
If you want to drill holes in concrete using a crown, you must turn off the hammer mode. As a rule, such devices are capable of forming holes whose depth is not more than 15 cm. If there is a need to go deeper into the wall to a more impressive thickness, an extension nozzle can be used. Similar crowns can be used in tandem with a drill. Unlike the previous ones, such additions have a tungsten carbide alloy spraying around the circumference. The advantage here is that if there is a need to make a hole in the concrete, which is tiled, then there is no need to change the nozzle, it will be able to drill well not only the decorative layer, but also the concrete itself. If you want to drill holes in concrete, equipment of the described type can be used with crowns, however, the drill should not have a power above 1000 watts.
Using Boers
If there is a hammer that you want to use with the drill, the diameter of the latter can vary from 4 to 80 millimeters. Quite often, novice masters ask themselves how to choose the right diameter for a drill.
Together with a punch, it is recommended to purchase a set of metal drills. However, quality kits have a very high cost, so the diameter should be the same as the dowel, which is supposed to be inserted into it. When buying such drills, it is recommended to find out which tail they have - SDS + or SDS-max.
Features of concrete drilling
If you decide to drill holes in concrete with a rotary hammer, you must first check to see if there is any contamination in the cartridge. If they were found, you must remove them with a rag, otherwise, during operation, some difficulties may arise.
When inserting a drill into the chuck, it must be ensured that it is installed at a right angle, while the shank is mounted all the way. The biggest problem that you may face when drilling is the collision of the drill with metal fittings. As a rule, this occurs when it is necessary to break through the wall to a greater depth. In this case, the reinforcement must be passed by the punch, only after that it is possible to continue work. If the holes will be made using an impact drill, then a metal drill will help to cope with the work .
Wizard Recommendations
If a hole is drilled in concrete with a crown, then every 15 minutes it is necessary to take a break for the same period. This is due to the fact that an unprofessional tool is not designed for a long load. During this time, not only the device, but also the consumables will cool. Before continuing work, it is necessary to moisten the drill with water, this will extend its service life.
Conclusion
When laser drilling of holes in concrete is performed, peeling of wall sections on the back side may occur. In this case, it is necessary to reduce the speed, then the process will occur somewhat more slowly. Despite the fact that the manipulation will take a lot of time, the wall outside will remain untouched.