Each of us has repeatedly encountered the need to mount various objects on the walls that add variety to the interior, create comfort, or simply remind of pleasant moments of life. Most often, you have to fix fixtures and sconces on a concrete surface, paintings and photographs, mirrors and shelves, install an air conditioner, or a TV. If in the case of a small picture, or photograph, you can get by driving a nail into the wall, then when the question is about more massive and heavy objects, the question arises of drilling holes. In order to avoid misunderstandings when working with concrete, for example, breaking a drill, dulling it, it’s worthwhile to properly prepare the partition, choose a high-quality tool and choose the right drill.
Tool selection and work with it
When choosing a tool in order to drill a hole, you should understand that your work depends on it. A good drill carefully drills a concrete wall, or other necessary material, simplifies the drilling process, while a bad one requires a lot of time, can not cope with the task, or complicates it. What you need to pay attention to when choosing a drill:
- Is there a possibility of changing the drilling speed? This item is important, because the correction of the high-speed mode will ensure the accurate operation of the drill, helping it not to damage the surface.
- Is there a possibility of hammer drilling and depth adjustment? hammer drilling can be applied on problem areas, softening them.
- Is it possible to hold the drill with both hands? Drill is not an easy tool and therefore should be preferred models that are equipped with handles.
- Is the power of the instrument satisfactory for your work?
Having decided on the drill, you need to get the hang of it before starting work. To do this, take the drill in one hand, like a gun, place the other hand on the handle of the tool (if it is not assumed by construction, the hand is placed near the cartridge). It is necessary to hold the drill in your hands strictly horizontally, so that the hole does not work with distortions and at the wrong angle. Before turning on the drill, wait until it becomes ambient temperature. Sudden changes in temperature can trigger condensation. If you decide to rest during work, unplug the tool.
Surface preparation
Before proceeding with drilling, you need to make sure that there are no wiring, pipes, electric cables in the chosen location of the overlap. The metal detector will help to cope with this task, since it reacts to non-ferrous metals, iron and steel.
Video: How to Drill Concrete with a Common Drill
Ignoring this condition, you can stumble on fittings, damage the drill, or cables / pipes that were hidden in the ceiling. If this section satisfies all of the above requirements, then a point is marked on the wall, and after that. a small depression is made in it at a slow speed with a drill. It is also worth remembering that the surface of a concrete wall is looser than subsequent layers.
Drill selection
This item can rightfully be considered the main one, since the quality of work and the safety of the drill itself, as well as the accuracy of work, depend on a correctly selected drill. Today, the market has a huge variety of drills: for wood, metal, concrete. The latter are distinguished by a triangular tip. For a concrete surface, it is best to use a carbide drill, for example, a drill. This type of drill crushes the material without breaking it, which is ideal for concrete floors.
If during the drilling of the wall the drill does not go forward, having encountered a dense area, it is recommended to use a punch. After inserting the punch into the hole, they hit it with a hammer until it starts to move forward and softens the problem area. After that, you can continue to drill.
It should be noted that without a punch, a puncher can easily cope with such difficulties, but holes are made that exceed 13 mm in diameter. If you want to use universal drills when drilling, you need to remember that they require cooling, vibration cut off and are suitable only for a conventional drill.
A little bit about the device of the drill and the installation of the drill
A classic drill consists of a power cable, a button, a capacitor wire, a reverse, brushes and springs, an armature, a stator, a gearbox and a cartridge, bearings, a key and mounting screws. A correctly inserted drill improves the quality of drilling, and can protect it.
The first thing to check when starting work with a drill is whether there are any contaminants on the drill itself. In cleaning drills, a rag will be a great helper. If the drill is loose, there is a risk that it will fly out and injure the master. Accordingly, it is necessary to immerse the drill as much as possible in the chuck (all the way!).
In no case do not try to “lengthen” the drill bit by incomplete immersion in the chuck!
It is important to ensure that the drill in the tool is fixed strictly along the axis. If this rule is not observed, drilling in concrete will be performed poorly, the shape of the hole can be unpredictable, and the elementary effect of the runout of the drill will become the cause of all these misunderstandings.
Power selection for drills
The optimum power for working on concrete in order to drill a hole is considered to be at least 600 W and 2500 rpm, but this figure needs to be adjusted depending on the manufacturer’s recommendations so as not to spoil the drill. As already mentioned, concrete “crumbles” when we drill, and this does not require too high revs.
Errors when working with a drill
- Clothing and gloves should be sized.
In no case do not try to hold the rotating cartridge by hand. there is a drill body for this. Otherwise, you may injure yourself. If you use gloves. do not take "with a margin." Gloves that are not suitable in size can also get into the cartridge and cause injury. Overalls should not hang out. they can be rolled up or pressed by arm ruffles.
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