Every master at least once faced with the need to drill concrete. This raises some questions, for example, what equipment and technologies to use. If you do not approach this task correctly, then the result may turn out to be a failure.
Choosing a tool for drilling concrete
If you want to drill holes in concrete, it is recommended to first decide on the tool. In this case, you can use one of two options, the first is an impact drill, the second is a hammer drill. 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 exceeding 12 cm. However, if you have to work with foam concrete, then in this case it is necessary to choose a drill, since the hammer 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 tool breakage. If you have only a few holes to make, then a drill will do in the absence of a hammer drill, while if you need to create many holes, then renting or purchasing the appropriate equipment will be necessary. In this case, we are talking not only about saving time and effort, this requirement is due to the fact that devices of this type are not designed for high loads, and if handled improperly, the equipment may become unusable. If you still have to use a drill, then you need to use a Pobedite drill designed for working on concrete. Tip must be carbide coated.
Diamond drills and other accessories
Drilling holes in concrete can be done with core drills that are diamond-coated 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. Along the circumference of the working face and theythere are solderings made of hard metal alloys. Their diameter can vary from 35 to 120 millimeters. However, crowns are most commonly used, the size of which is 68 millimeters. This is due to the fact that this is the diameter required to install sockets.
If you want to drill holes in concrete using a hole saw, you need to turn off the hammer impact 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 delve into the wall to a more impressive thickness, an extension nozzle can be used. Similar crowns can also be used in tandem with a drill. Unlike the previous ones, these additions have a coating of tungsten carbide alloy around the circumference. The advantage here is that if there is a need to make a hole in concrete that is tiled, then you do not 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, the type of equipment described can be used with hole saws, but the drill must not have a power higher than 1000 watts.
Using drills
If there is a puncher that you want to use with a drill, then the diameter of the latter can vary from 4 to 80 millimeters. Quite often, novice masters wonder how to choose the right drill diameter.
Together withperforator it is recommended to purchase a set of drill bits for metal. However, high-quality kits are very expensive, so the diameter should be the same as that of the dowel that 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.
Concrete drilling features
If you decide to drill holes in concrete with a hammer drill, you first need to check if there are any contaminants in the cartridge. If they were found, you must remove them with a rag, otherwise some difficulties may arise during operation.
When inserting the drill into the chuck, make sure that it is installed at a right angle, while the shank is mounted to the stop. The biggest problem that you can face when drilling is the collision of the drill with metal fittings. As a rule, this happens when it is necessary to break through the wall to a greater depth. In this case, the reinforcement must be passed by a punch, only after that you can continue working. If the holes will be made with an impact drill, then a metal drill will help to cope with the work.
Master's recommendations
If drilling holes 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 a non-professional tool is not designed for a long load. Duringof the mentioned time, not only the device, but also the consumable will cool down. Before continuing to work, it is necessary to moisten the drill with water, this will extend its service life.
Conclusion
When laser drilling holes in concrete, delamination of sections of the wall on the reverse side may occur. In this case, it is necessary to reduce the speed, then the process will be somewhat slower. Although the manipulation will take a lot of time, the wall outside will remain intact.
