How to drill a brick
During repairs it is often necessary to hang cornices, pictures or even a hanging cabinet on the wall. And in order to do this, it is necessary to drill into a wall, sometimes made of brick and mortar. To drill masonry is recommended with some experience in such work. The right tool will also be needed. including properly selected drill bits whose cutting edge is made of a material harder and more durable than brick.
Brick drill bits
Ordinary drill bits designed to work on metal will not help to drill a brick wall. To be exact, you can make a hole with them, but then the brick will act as a sharpening stone and the drill will quickly become dull.
Drill holes in brick is most effective with drills that have a cladding of the so-called “pobedite”. The features of the special alloy made of various proportions of tungsten and cobalt are such that drills made of it do not require pre-sharpening to work with dense surfaces. With such a tool it is easy to drill holes in brick for dowels for shelves and other interior elements.
Also for drilling holes in bricks, drills with diamond coating (diamond powder electroplated on the metal in 1 or 2 layers) are often used. By using them, the result of the work will be even faster, but they cost more than pobedite drills, and the choice of diameters and lengths they have is much smaller.
For more information about diamond drill bits and core bits, visit http://www.stroy-res.The drill bits are not only pressurized, the cutting edge is hard to pressurize the material, so the drills are slow and the friction heats them up a lot. Drills with a high percentage of diamond chips on the cutting surfaces are in great demand. Such coatings are applied by diffusion welding under vacuum.
Before starting the repair, it is necessary to buy drills of the appropriate diameter. as a rule, for most work will be enough 6, 8 and 10 millimeters. In the case of diameters larger than 30 mm allowed to use no longer drills and drills, and a special core drill rig that allows you to quickly make a hole in a brick wall. If you need to drill deeper, however, use a drill with rounded edges, which increases the wear resistance of the tool.
Special features of drilling
In addition to the right drill, the handyman will also need to have a peorator or, at the very least, an impact drill. Such tools not only rotate the drill bits, but also hit them.
During the work, you should not forget the following features of drilling bricks:
- drills with pobedite and diamond tipped drills become blunt after about 20-30 holes have been drilled with them;
- During the drilling process, the drills should sometimes be dipped in water, to avoid their overheating, and to ensure greater adhesion;
- To make the drill last longer, you should drill bricks at a speed of no more than 200-300 rpm;
- Certain precautions must be taken during drilling. Since the drill bit heats up to very high temperatures, you should avoid touching it. It is not recommended to work without safety glasses to prevent dust and brick particles from getting into the eyes.
Preparing the Wall
If you want to drill holes in a brick wall, you must first determine exactly where they will be. To do this, make sure that there are no electrical wires or sewage pipes in the area. A special detector can help us, which can easily be found at almost every DIY store. The points where the holes should be located can be marked with a pencil, this is very helpful. We also have to reach the level to make sure we keep the level.
Drill bits are used for drilling in brick, concrete and stone. They allow holes from 3 mm to even 35 mm in diameter, are heavy and have one spiral with one groove. The cheapest large format drills available on the market are usually made of stainless steel and are suitable for both brick walls and drywall.
If we want to be able to drill in harder materials, such as reinforced concrete or compact stone, we must invest in a harder model made of sintered carbides. We should not save too much when looking for the right drills. If we choose a solid product of a well-known brand, it will certainly not be damaged after the first use. Many manufacturers say that durable drills can work well for several or even several years, depending on how often they are used.
Choosing the right tool for drilling and marking
Answering the question of how to drill a brick wall, time should be devoted to selecting the necessary tools for the work. You will need:
- A drill or a rotary tool.
- Measuring tape.
- Crown or drills with pobeditovye tips (special consumables for drilling go with the peorator).
After preparing all the necessary tools, we make a marking. Only then drill holes in a brick wall.
If you do not want to have all the outlets and switches, were at different levels from the floor surface, and the kitchen cabinets and curtains hung crooked, you will need to pre-mark the future holes in the brick. Perform the marking as follows:
- Lockers. Determine the height of the fixtures. According to the level is drawn a horizontal line for the trimmer for all future holes in the brick walls. Use vertical strokes to mark the size of the gap between the fasteners.
- Wall sockets and switches. European standards require that from the floor to the electrical outlet was about 25-30 cm. The height of the switch is chosen individually. But as a rule, the distance from the floor is within 70-80 cm.
After marking on the wall you will have a pattern similar to the sight. The intersection of the lines and will be the location for the hole or the center of the drill bit.
Advice! To avoid damaging the wiring, you must test the wall with a special detector before you make the hole. To avoid buying an expensive device you can rent it from one of the construction supermarkets.
Preparatory work: positioning relative to the brick wall
Preparatory work in relation to the brick wall itself just before drilling is more of an introductory nature than a “strategic”. design. In terms of safe execution of such works it is necessary to use a metal detector, which was indicated in the list above.
Its practical use immediately before drilling will exclude the possibility of damage to wiring, internal heating systems, as well as various reinforcing components.
The marking of electrical outlets, switches and light fixtures. the final preparatory work. Taking into account the peculiarities of laying electrical wires from the above-mentioned “points” to the junction box, which is usually a vertical route, but not excluding the possibility of diagonal, we determine the location of drilling.
Despite the supposed accuracy in selecting the location of drilling, deepening the first 10-20 mm should be performed with a screwdriver. Using such a device will allow you to identify in a timely manner recessed in the plaster communications, as well as avoid critical damage to them.
Tips from the experts
Before you decide what to drill concrete walls, and start the work, it is worth paying attention to the following recommendations:
- If the diameter of the hole exceeds 12 mm and its depth is 10-11 cm, it is better to use a peorator or a hybrid device (drill-peorator);
- If the holes are made for plastic dowels, the depth must be greater than the size of the fixing element by 7-10 mm, because concrete dust and small particles of stone remains inside;
- it is recommended to start the work at low speed, so that the nozzle does not move because of the increased torque, and the impact mode includes when the drill passes 2-4 mm in depth;
- The dust that appears during drilling can be removed with a vacuum cleaner and it is advisable to do this while drilling, periodically stopping the drill and cleaning the hole of concrete particles;
- necessarily during the work to observe safety precautions: you must wear gloves to eliminate the risk of slipping the handle and safety glasses to prevent crumbs from getting into the eyes and damaging the mucous membranes.
In most cases, the concrete wall is drilled with a drill, making do without a drill. If, however, within the repair need to make no more than 15-20 holes, or the wall is made of foam concrete, the use of a drill. the best choice that will save time and money.
Before you punch a hole, you must make sure that in this place is not running wiring, and check whether the nozzle is suitable for such work (on what drill will be equipped with a drill, depends on the duration and effectiveness of the work). Deciding what to drill a wall with, you should pay attention to the pobedite crowns: with such a drill using a drill without much difficulty can pierce a hole to a depth of 10-12 cm.
How to drill a brick wall
During repairs, communications, or remodeling, it becomes necessary to make various numbers of holes in the walls. The tool and drilling technique will vary depending on the wall material. Before drilling a brick wall, it is recommended to use some practical tips, since such a strong material as brick sometimes requires a special approach.
Necessary tools and their selection
The wrong choice of tool and drill type not only will not get the desired result, but can ruin the equipment. Two types of equipment are used for drilling bricks. a peorator or an impact drill. The right choice of a drill, first of all, is in its power. The minimum power of this tool should not be less than 600 watts, and the minimum number of revolutions. from 2500 revolutions per minute. It is better if the mechanism has reverse rotation of the drill bit and the ability to continuously adjust the power. Drilling holes in bricks should be carried out with an impact drill, because the walls of this material is very resistant to static stresses, and are subjected only to shock effects with a load of a dynamic nature. If you drill with a regular drill, it will be long and inefficient because the drill bit edge will not engage in the internal structure of the brick. Overheating of the tool and drill bit breakage are possible.
In addition to the use of electrical equipment, there is the possibility of using hand tools. the so-called flat bore. It is a tube with teeth on the end, through which the hole is drilled by human physical force.
In addition, the following tools will be needed:
To drill holes in a brick wall effectively, you need to use drill bits with a certain diameter, made of carbide material. They differ from conventional drills in that they have a diamond or pobedite cutting edge. drills with a diameter of 0.6 or 0.8 cm can be used if the hole is up to 15 cm deep. The maximum diameter of the hole that can be drilled with drill bits is 1.5 cm.
Victory drill for brick walls
If a much larger hole diameter is to be drilled through, it is better to use a drill that is mounted on a rotary table and an impact drill. The size of the drill depends on the depth of the hole. If it is necessary to drill a hole in the wall with a width of 60 cm or more, to speed up the process and its efficiency, it is recommended to use drills with the same diameter, but of different lengths at different stages of drilling, for example, to start with a 15 cm long drill, and at the final stage. 50 cm long.
The maximum diameter of the drill hole can be up to 2.8 cm.
To install the boxes for outlets, switches, you need to create a niche. In this case, drill bits are used on the peorator, which are made of strong steel and make it possible to obtain holes of large diameter. Bits are drilled without impact function, and their selection depends on the diameter and number of teeth.
The crown on the peorator
- Dowels for fasteners
- Screwdriver for dowels
- Safety glasses
- A container for cooling water
- drilling bit for marking with a drill bit.
- Victory glass
- Metal detector
Do You Drill Into the Brick or the Mortar ?
There are three ways to drill a hole in a brick wall: manual, electromechanical and automatic.
However, before you start working, it is necessary to study the location of the electrical wiring, because accidental contact with the line for the trimmer wiring will not only damage it, but can also electrocute a person. Most often the wiring is vertical or diagonal to the sockets and switches. If in doubt, it is worth using a special device to detect hidden wires. Portable metal detector will help detect aluminum wire or copper wire, located no deeper than 1 cm.
Handheld metal detector can help locate hidden utilities
Technology of manual drilling
If you do not have an electric tool, you can drill holes with a hatchet. For this purpose, the locations are pre-determined by drilling with a drift punch. After that, a hammer is struck on the hatchet, which is placed against the wall at an angle of 90 degrees. Every three strokes the flat bumper is turned and the brick debris is removed from the pipe. Thus, the hole is knocked out until it reaches the required depth.
The electromechanical process
Mechanical drilling is performed with a percussion drill or a peorator, the process is the same.
First you need to determine the type (through hole, no through hole), depth and diameter of the hole. This is necessary for the proper selection of drill bit or auger. If you have difficulty maintaining the same distance between the holes, you can use a template. The stencil is made of plywood, particle board, plastic and other materials at hand. To use it, you need to attach sandpaper on one side with double-sided tape or glue, then lean it against the wall and drill.
Once the type and diameter of the future hole has been determined, a core marking should be made. The drilling process will be easier if you make it in the joint between the bricks. The core notches are made to fix the drill bit and make it easier to penetrate. When drilling with a drill, the tool must be kept perpendicular to the wall, gently pressing on it so as not to break the drill bit or drill. Periodically, the drill should be taken out to cool in a container of cold water.
If it is necessary to drill a hole with a diameter greater than 18 cm, the diamond core drill is used. If they are not available, you can use conventional-diameter pobedite drill bits. For this:
- The place of the future hole is marked, with a pencil trace its contour.
- On the outside of the line is drilled, the number of holes depends on the diameter of the contour. The diameter of the drill itself should be 0.8-1.0 cm, the step of the holes on the contour should be 1.0 cm. To do the job more accurately, you can use even smaller drills, but then the process will take longer.
- Chisel and hammer to make a pick out of the drilled contour.
What to drill a wall with
A better tool than the peorator for drilling holes in brick and concrete walls has not yet been invented. But rarely can anyone afford the luxury of having such an expensive tool in the household. Usually buy an electric impact drill.
Choice of drill
When buying an electric drill, you should be guided by the following specifications.
Drill power must be at least 600 W. Revolutions up to 2500 rpm and continuously adjustable from zero to maximum speed. Reverse rotation (clockwise or anti-clockwise). The chuck is best of all a quick-change chuck, it will not be necessary to waste time on clamping the drill and looking for the constantly lost key. Drill bits up to 12 mm diameter clamped in the chuck.
Switchable hammer drill function. Of course, the drill with this feature will not become a full-fledged drill, but it will be much easier and faster to drill a wall and here’s why. Bricks, cement and concrete can withstand static pressure very well. But they’re easily destroyed by dynamic impact. The karate guys easily split a brick in two with the palm of their hand because of the force of the blow. When drilling with a drill without a hammer function, there is a simple drill pressure and the cutting edge is difficult to catch on the material, so drilling is slow and the drill from friction heats up a lot. Drilling with an impact is quite different. The drill pokes out a part of the material with its cutting edge on impact, and when it hits the resulting cavity, it breaks off a portion of the material particles. Something like chiseling with a chisel takes place.
Choice of bit
Walls made of wood, plasterboard, foam concrete can be drilled successfully with an ordinary drill bit. Brick, stone or concrete walls require a carbide drill bit. It differs from the steel drill bit in that its cutting edges are made of carbide, usually tungsten carbide, welded to the conventional drill bit. Less often artificial diamond.
The whitewash insert is clearly visible on the end of the top drill. It is sufficient to have 2 cBN bits 6 and 8 mm in diameter.
Use pobedite bits to drill a hole no deeper than 10-15 cm. To drill deeper, e.g. through walls, use a drill bit. Drill bits for drilling brick and concrete walls can be up to one meter long and are designed for drilling holes only with a perforator. even the cutting edges of the auger are not sharp, but rounded, so as to make them more resistant to wear and tear. Drills with a rotary table function can also be used successfully for auger drilling.
Drills come with a shank diameter of 10 and 18 mm, with special grooves SDS or SDS-max standard for fastening, but in the usual cam chuck is also well clamped. The standard and the diameter of the drill are stamped on its shank.
if it is necessary to pass a thick wall, for example, half a meter, the passage is carried out in several stages with drills of the same diameter, but different lengths. This is necessary for safety and fast drilling. first drill the wall with a 20 cm long drill to a depth of 10-15 cm, then a longer drill to a depth of 30-35 cm and finish the drilling with a 50 cm long drill. the drill for such work should be powerful enough. Of course, the drill for such a load is not designed and allowed its use only in exceptional cases. Better to do this kind of work, rent a real peorator.
The electromechanical process
Mechanical drilling is performed with an impact drill or a rotary hammer drill, the process is the same.
First you need to determine the type (through, not through), depth and diameter of the hole. This is necessary for the right drill or drill bit.
If there are difficulties in maintaining the same distance between the holes, you can use a template. The stencil is made of plywood, particle board, plastic and other materials at hand. To use it, you need to fix the sandpaper on one side with double-sided tape or glue, then lean it against the wall and drill.
How to drill, plug and screw into a brick wall. The complete DIY guide
Once the type and diameter of the future hole is determined, you should mark with a core. The process of drilling will be facilitated if you make it in the joint between the bricks.
Notches in the core cutter are used to fix the drill bit and make it easier to insert the drill bit. When drilling with a drill, the tool must be held perpendicular to the wall, pressing gently to avoid breaking the drill bit or drill. Periodically take out the drill bit to cool it down in a container of cold water.
If you want to drill a hole with a diameter larger than 18cm, use a drill with diamond bits. If these are not available, it is possible to use pobedite drills of normal diameter. To do this:
The place of the future hole is marked, the pencil outline of the hole is traced.Drilling is carried out along the outside of the line, the number of holes depending on the diameter of the contour. The diameter of the drill bit itself should be 0.8-1.0 cm, the spacing of the holes on the contour should be 1.0 cm. Even smaller diameters can be used to do the work more accurately, but then the process takes longer.Use a chisel and hammer to make a pick out of the drilled contour.
If you need to drill through a thick wall, you can do it in two steps: first, the drilling process is performed, as described above, on one side of the wall. Then, the center of the resulting hole is drilled through. Then the required diameter is marked on the other side of the wall around the planned through center, and the process is repeated.
The pros of diamond drilling
Nowadays it is the most progressive method. It has a number of advantages
- Obtaining a perfectly defined shape of the hole.
- No major scratches or chips. It is not necessary to pass over the working surface with a tool.
- Working tip is strongly cooled during the process, thanks to this the channel is formed faster, the speed of work increases.
- Precise coordinates are set, the work takes place only in the originally set area.
- Minimal noise, almost no vibration from the tool.
- No big layer of dust and debris afterwards.
- Large range of channels. The largest diameter is 0.5 meter.
- No cracks will appear in the walls in the process. They are when working with percussion tools.
One important advantage of this method is drilling holes up to one meter deep. Due to the uninterrupted operation, time is saved significantly.