Today during repair work drywall has found wide application. In this regard, for the installation of various elements in walls and ceilings made of plasterboard, it became necessary to use special drills - drywall crowns. What is it, how to choose and apply them?
What is this article about
What is a crown
How to cut a smooth round hole in drywall, the required diameter? To do this, use a cutter in the form of a cylinder with a cutting jagged edge on one side and a "tail" for mounting the cutter in a drill on the other. A drill is located in the center of this cylinder. This whole design is called a drywall crown, or a core drill. How it works: the drill enters the drywall first and sets the center of the future hole, while the nozzle is fixed in the desired position, the edge of the cutter enters the surface and cuts the circle.
Types of crowns
Core drills can be divided into two types: solid and collapsible.
- Solid crowns are a drill with a single metal toothed cylinder on it;
- The collapsible crown device contains a universal disk into which cylinders of different diameters can be inserted. The cylinders themselves have an open shape and come with a disc. As with solid crowns, the collapsible edge is serrated.
The cylinder diameter can vary from 33 to 150 mm.
For making holes in drywall, crowns are suitable for both wood and metal. There are universal - bimetallic crowns that can be used to drill metal, wood, plasterboard, of course they are more expensive, but if you use them only for drywall, then we can say that they are eternal. When buying a bi-metal crown, you should pay attention to the fact that they are usually sold without a holder and a centering drill. In the assembly, this is called an adapter, which will have to be purchased separately.
Cutter selection
Arriving at the store, it is easy to get confused by the abundance of crowns on offer. How not to make a mistake with the choice so that it does not break when making the first hole?
- Taking the crown in your hands, take a good look at it. If these are low quality products, you can visually immediately see, for example, elements, inaccurate processing, defective coating. It is worth paying attention to the tail of the crown, if it is too light, then it is made of low-quality metal and can quickly break;
- The centering drill and the tail must be firmly fixed, no gaps are allowed. Also, if this is a collapsible crown, you need to check each cylinder that comes with the kit, how easily and evenly each of them fits into the groove of the disc. Make sure that none of the cylinders hangs in the groove, because the quality of the cut will depend on this;
- The element of the crown, which accounts for the maximum load during drilling, is cylinders (glasses) with a serrated edge. It is the quality of the material of this element that determines the life of the entire device. The saws should not be too thin and bend easily, the material must be elastic, otherwise you may not get a hole. Saw blades with hardened teeth are of higher quality and more durable. Do not forget - cutting teeth must provide a clear and even cut of the material;
- Core drills have different size(cylinder diameter, drilling depth), if you take a set, make sure that it has the one you need.
Crown for installation of mounting boxes
The most common need to drill round holes in drywall is to install sockets. The invisible part of the outlet, a plastic round mounting box that is mounted in the wall, is called the socket box. There are socket boxes for concrete, wood and drywall.
The drywall socket is a plastic cup with adjustable plastic or metal plates. Thanks to these "legs", the socket box is fixed to the back of the drywall sheet. The depth of the mounting box can be 40, 50, 60 or 73 mm. As for the diameter, for a standard socket box it is usually 68-70 mm.
If you only need to drill holes for mounting sockets, you only need one bit. In this case, you should not purchase a set of collapsible crowns. It is enough to buy one special core drill with a diameter of 68 or 70 mm (depending on the size of your sockets).
To date, the diameter of the core drill for drywall 68 mm is the most popular standard size.
Spotlights
Spotlights, the so-called spots, which are a point source of light, are widely used today. In most cases, spots are installed in plasterboard ceilings or boxes. For installation, it is necessary to cut a hole with a diameter corresponding to the diameter ceiling lamp. Usually, the required diameter for cutting is written on the package from under the lamp or in the instructions for it, but it happens that there is no instruction, then it is worth measuring the diameter yourself. This can also be done simply to check the specified information, so as not to accidentally make a hole of the wrong diameter, because then nothing can be corrected.
The most common hole diameters for spots are 60 and 75 mm. To get a hole desired diameter you should use a special drill - a drywall crown. The main thing when you choose the size of the crown for drilling a hole for a spotlight is that the drilled diameter is less than the diameter of the spot, that is, the lamp must completely cover the gift during installation.
Organization of the drilling process
Everyone uses different bits depending on their needs, but whichever drill you use, you can make general instruction on their application.
The whole process can be divided into several stages:
- determining the location of holes on drywall;
- surface material marking;
- fastening a core drill to a power tool;
- drilling directly.
At the first stage, you should decide where, how much, what diameter the holes will be. It is better if you already have the elements to be mounted (lights, sockets, etc.), then it is easier to determine all the necessary hole diameters and thereby avoid unnecessary mistakes. Ideally, if there is a visual layout.
Next comes the marking of the surface. Measurements are taken and the center points of the holes are applied to the surface of the drywall, where the centering drill subsequently enters. Be careful that the hole does not fall on the location of the metal profile, in which case you will be forced to cut the metal as well. If, for example, you can’t see from the heads of the screws where the profile is located, and you didn’t fix the drywall, then you should find out where the metal passes before drilling, you may need to ask the winding team to put some marks in advance. There is another way to find out the location of the profile - use the search magnet. If you plan to place several elements side by side, then when marking, you need to monitor the level.
At the third stage, a crown of the required diameter is taken and installed on a power tool. It can be a drill or a screwdriver. To use a hammer drill, you need to purchase an adapter cartridge and do not forget to turn off the shock mode.
Further, after you have made the calculations and markup, you can proceed directly to drilling. The centering drill of the crown is placed on the center of the future hole and the power tool is switched on unsharply. In this process, large tool capacities are not needed. The main thing is to hold the tool evenly so as not to get a beveled cut. The drilling process can be carried out both on the already fixed drywall, and not yet on the mounted sheets, without applying strong pressure on the gypsum plasterboard.
Drywall - Enough soft material, and having a cutter right size and quality, it is not difficult to make an even hole, but still, if you doubt your abilities, trust the professionals.
Often, when repairing or installing various wooden products You need to drill a perfectly round hole. In this article we will try to highlight all the ways in which such a hole can be cut. Options will be considered with the use of special tools, as well as without them.
How to cut plywood
A hacksaw with a very narrow blade, a jigsaw, a drill saw and a round file are those hand tools, which can be cut along a curve.
It is the narrow blade that provides the hacksaw with maneuverability, but for the same reason it is extremely difficult to guide. It is necessary to have a firm hand and an attentive eye in order to prevent deviations from the markup. At the same time, do not try to work quickly. On the contrary, it is better to advance in small jerks. This will help you more confidently hold the handle of the saw and guide it exactly along the given line.
It is better to cut small round or oval holes and "narrow" curves with the help of special tools - a drill saw and a round file, which can also be used to clean rounding.
However, the most suitable tool for cutting rounded parts and holes is to recognize an electric saw. Its advantage is not only that it saves time and effort. The included set of interchangeable blades with different teeth allows you to choose a blade for sawing almost any type of workpiece, whether it be wood, plywood or chipboard. In other words, the electric saw can rightfully be called a universal tool.
Round corners of furniture
Hitting the sharp corner of the table can even hurt you. Therefore, we recommend cutting corners where possible. For homemade furniture, they must be rounded from the very beginning.
Cutting circles and curved lines is no more difficult than making a completely straight cut on a workpiece, but on one condition: you have right tool and you are good at it.
Mark drop-down parts
It may happen that the holes that you drilled to insert a narrow blade of a manual or electric saw will be in useful areas. To avoid such errors, you should mark all the drop-out parts of the workpiece with hatching.
What is suitable for the template
You can make a circle on the workpiece not only with a compass. For this purpose, any object of a similar shape will do. It can be a saucepan, a plate, a cup or a bowl. However, when undertaking work related to the repair of furniture or some piece of furniture, calculate in advance the need for details of rounded contours or with round holes. It may be sufficient to make only minor changes to the design.
Instead of a compass
A school compass can also be useful in a home workshop, but its radius of action is small. And if you need to draw a circle of large diameter?
An easy way is to do it with string, a nail and a pencil. The nail is carefully driven into the workpiece, the rope is fixed on it at one end, and the pin is fixed at the other end. The length of the rope determines the radius of the circle being drawn. The only condition is that the rope must be taut along the entire path of the pencil. Then the distance from the center (nail) to the circumference in all sections of the markup will be the same.
Strip of cardboard or slats
No less simple, but more reliable way- use a strip of cardboard instead of a rope or, even better, a wooden plank. Drill two holes in this bar (strip) - one smaller for a nail, the other larger for a pencil. The distance between their tips should correspond to the radius of the desired circle. It remains only to install a nail in the right place and turn the bar around the axis.
Two sharpened nails and a wooden plank or a strip of thick cardboard can replace the compass.
How to draw ellipses
An ellipse is a rather complex shape, but to draw it on paper, you only need two buttons, a piece of string and a sharpened pencil.
Fix two buttons on the surface of the workpiece at a certain distance from each other. Take a piece of string, tie both ends in a knot and hook the string around the button heads. Now draw a line with a pencil that the stretched rope allows you to describe. You can change the shape of the ellipse as you wish.
The distance between the two focal points of the ellipse is indicated by buttons. If you lead a pencil within the boundaries allotted to it by a rope, then an ellipse outline will appear on paper.
The shape of the ellipse can be larger or smaller, thicker or narrower, depending on the distance between the buttons and the length of the rope.
Templates
Wine glasses, cups, plates, pots or baking dishes - in any household there are many round-shaped objects that can be used to mark a circle. If you are making something and decide to give your product a rounded shape, then first look to see if there is a suitable template among the household utensils. To be sure, select a few items and take them to the workshop. There you can immediately try them on the workpiece and determine what is most suitable. After some practice, you will be able to make rounded lines from several round objects with different radii. Arcs of a circle can be drawn sequentially, or you can draw bridges-transitions between individual arcs.
preliminary drawing
Before attempting to draw a curve on a blank, design it on a large sheet of paper or a piece of corrugated cardboard. Only after a satisfactory result has been achieved in all positions, can you cut out a template from paper and mark it on the workpiece.
You can draw circles and fragments of a circle using a cup or plate, simply tracing them with a pencil.
Sink insert according to the template
Washing is one of essential elements kitchen equipment. If you decide to embed the sink into the countertop of the kitchen worktop yourself, then the first thing to do is to prepare an exact template.
First on dense sheet paper transfer the outer contour of the sink. Next, measure the width of its sides, with which it will rest on the countertop. Usually it is 2-3 cm. Now step back from the outline drawn on the paper, inward to the width of the rim and draw a parallel line. This will be the cutting line.
When marking, make sure that the position on the plate of the template itself is correct. Of course, if all the corners of the shell are symmetrical, then nothing terrible will happen if it turns out to be, according to the markup, as if in a mirror image. But if the shell is trapezoid and the roundings at the front corners are different from the roundings at the back, then in no case confuse the front and back.
In a similar pattern, make templates and cut holes for wall lights or for a speaker mounted on wooden panels.
The line drawn around the sink is auxiliary. The second, drawn parallel closer to the center, is the sawing line.
electric hacksaw
If you need to cut a rounded part and saw through a round hole in the workpiece, then an electric saw is the most suitable tool. With its help, you will save time and effort, since such a saw has great advantages over a manual one. So, the blade of the electric cutter is narrower, which provides increased maneuverability. Further, it has interchangeable blades with different teeth, which allows you to process workpieces of any type, that is, wood, plywood, chipboard (it is no coincidence that the tool is also called a jigsaw).
To cut a section inside the workpiece, a hole is first drilled for a hand saw. But if you have an electric saw, then this is not necessary. The tool is brought to the workpiece with a slight forward inclination and is turned on in this position. The saw cuts the hole itself. Just do not put too much pressure on the body - this can lead to breakage of the saw blade.
Lead in a circle
This device, simple in design, makes it much easier to cut round holes or arcs. It is enough to mark the center of the circle on the workpiece, fix the fixture at the mark and connect the rod coming from it with the electric saw. The divisions on the rod help to set the saw blade at the distance from the center of the circle, which is necessary. As a result, without preliminary marking, you can cut a circle or saw through an arc with a radius of 5 to 20 cm.
The device (more precisely, its “sole”) is attached to the surface of the workpiece with screws. They must be well tightened. If the mount is not rigid, starts to hang out, then an even circle will not work.
Suitable for lefties too
Left-handers can also use the device, since the guide rod is attached to the movable unit both on the left and on the right. So saw at your own discretion - clockwise or counterclockwise.
Using such a device, it is possible to cut a round hole in the workpiece with a diameter of 10 to 40 cm without preliminary marking.
jigsaw
When cutting holes or curves in small workpieces, sometimes a jigsaw is indispensable. Interchangeable blades with teeth of different shape and arrangement allow you to work with wood of various densities. However, it should be borne in mind that the depth of cut is limited by the arc of the jigsaw, that is, the saw blade will not be able to move further than 30 cm from the edge of the workpiece.
Very thin, narrow saw blades can be easily damaged if the jigsaw is not used correctly. It is necessary to drive the saw with neat, methodical movements. The main thing is to prevent the canvas from skewing. Otherwise, small and light workpieces will begin to move with the saw, which may eventually cause the blade to burst.
The thinnest jigsaw blade will “master” the narrowest curve, but only in small workpieces, since the advancement of the blade is limited by the jigsaw arc.
Boring saw
Neither a manual nor an electric saw will help if you need to cut a small hole in the workpiece - less than 10 cm in diameter. A jigsaw can also be useless if the workpiece is large. In this case, the most suitable tool is a drill saw. With its tip, it bites into a tree like a drill and thus makes a “starting” hole for further cutting. Outwardly, the saw is similar to a round file, with the difference that its core goes around the cutting edge in a spiral.
Drill saws are available with interchangeable nozzles of various diameters, designed for processing both softwood and hardwood, as well as a variety of materials from it.
The working body of a drill saw is a metal rod with a cutting edge, like a gimlet, and a cutting edge that goes around the rod in a spiral.
It looks like the narrowest of hand saws. Thanks to the fastening unit, the blades in the hacksaw can be changed depending on the nature of the material being processed.
Drill attachment
One of the most popular and convenient options for cutting a hole is a special nozzle for a drill. It is made in the form of a crown crest and has a rounded shape. With this nozzle, holes are cut quickly and they are quite even.
hole drill bit
Nozzles come in different diameters, which allows you to cut a hole of the required diameter. If you have already prepared a hole, we can advise you to try yourself in options trading.
Drill
You can also cut a large hole with a drill. To do this, it is necessary to pre-mark the contour of the drilled hole. Next, with a small drill, drill along the contour prepared in advance, through holes. Next, with a jigsaw or a very sharp knife, we cut off the holes, thereby connecting the holes. After that, you can smooth the circle with the help of skins of various grain sizes.
Chisel
You can also cut the required hole with a chisel. It is enough to remove the wood along the contour layer by layer. This option is the least suitable for interior design. The hole must be even, which cannot be achieved using improvised and unsuitable materials. The best option would be to use a crown on a drill. The hole is smooth and has smooth edges.
Thus, summing up, it becomes clear that you need to choose a tool for cutting a hole based on your goals. If needed high-quality cut, then you can not do without a special tool.
The absence of holes for faucets or faucets in modern sinks is not a defect, but a necessity. Installation technologies for such products involve several positions for the sink itself.
The product line offers several basic diameters for sanitary fittings - try to guess which one you need here! We will not guess, we will install.
Two types of sinks
The most popular now are two types of kitchen sinks:
- Stainless steel sinks;
- Porcelain stoneware products.
Both with stainless steel and porcelain stoneware, manufacturers are in no hurry to drill holes, leaving these little things to sellers.
For your information!
Drilling holes can be arranged at sink sales outlets.
The price of manipulation is lifting, indicate the diameter and place, pay and get the finished product with places for mounting cranes,.
The problem is solved, on this we can close the topic being analyzed, but there are situations that radically change the original plans. Moreover, the desire to do everything with your own hands, and the pleasure that you get from a job well done, is incomparable.
Independent work
Simple things can change the world. The initial desire to install a crane with right side in the corner will be nullified if your spouse is left-handed.
On a note!
In the kitchen, as nowhere else, great importance is given to beauty, functionality, and even ergonomics.
It is very inconvenient for left-handers to open the tap, located on the right, with their left hand.
Water gets on your hand.
Our instruction:
- Perform all work with the product before installing it in a stationary place, with these simple actions you will prevent deformation of the object and premature damage;
- Place the sink horizontally on a wooden base. Drill a small hole with a drill for metal, 5-6 mm is enough to determine the center of the circle;
Advice!
If you use punches and a hammer, then the above manipulation is not necessary.
- There are three paths to choose from:
- Hammer and punch. Here, you simply pierce everything fixed with special nozzles manually, the nozzle is initially selected according to the diameter of the hole in the sink for a mixer or tap;
- Punch of a special design. This is a mechanical toy that uses the extrusion method. Such a punch consists of a threaded pin and two nozzles, a tap and a pressing washer with a wrench head. By installing the pin in the hole from the outside, screwing the washer with the head, you tighten-press with a key. The result of this manipulation is a hole in the stainless steel sink for the mixer;
- The third way is a special drill called a carrot. The name has taken root so much that even on the original packaging of the goods it is not called anything other than a carrot-drill. The drill is represented by a cone, with a cutting edge diameter from 6 to 32 and even 38 mm. We will not describe the principle of using a drill, everything is clear.
Into the piggy bank!
Sometimes the choice of the consumer stops at mixers with large diameter glasses.
Sink siphon with big hole requires a large landing nest.
Then there are several ways out: the first is to order a hole in the store, the second is to drill several holes of a smaller diameter around the circumference.
Then just connect them together, removing the inner circle with a chisel.
True, accuracy and precision of movements will be required.
How to drill a hole in a stainless steel sink - we dismantled, go to the stones.
Stone and under stone
Much more interesting is the topic of drilling landing nests in stone sinks.
What are we doing?
- At the site of the intended hole, we make a mark and drill;
Note!
Simple manipulation - working with a drill - is not very simple in practice.
A drill with a victorious insert is contraindicated for this work, it does not drill as much as it cuts, peels the material.
The drill for metal proved to be quite good, but low revolutions of the drill itself are necessary (in ideal It is better to use a hand drill).
At high speeds, the edges are melted.
- During the drilling process, the material can heat up quickly, but this is difficult to control. Drilling a hole in a sink artificial stone it is better to carry out a thin drill. We work along the perimeter of the entire future nest;
- It is recommended to “pass” the partitions between the holes in two ways:
- We cut the strokes with an electric soldering iron, followed by knocking out the cork with a hammer;
- The material is sawn well with a jigsaw. Although this process is longer, the edge is the most even;
- Grinding the hole circumference is done with a round abrasive nozzle for the entire circumference. If this is not available on the farm, use a regular round file.
Into the piggy bank!
You can also drill a hole in an artificial stone sink with a diamond drill, if you have one.
We inform!
Some bowls have special marks.
These are places where you can punch a hole by hitting it with a hammer.
This must be done with care, the tags themselves are marked with paper stickers, which can slip during transportation.
A blow to another point can only lead to the destruction of the material.
Finally
The topic of how to cut a hole in the sink under the mixer, we have dismantled. It remains to watch the video in this article to visualize and fully represent the process. However, if you are not sure about the result, it is better to contact specialists.
There are times when you need to make a hole in the glass. In reality, this is not so easy to do. In this article, you will learn a couple of ways to solve this problem.
How to drill glass
If you need to make a hole in the glass, for example, to hang a mirror or insert a handle in a glass cabinet door, you can use these simple methods.
For the first method you will need:
- the glass itself
- drill for metal
- drill
- acetone
- turpentine
- alcohol
To drill a hole in the glass, you need to lay it on flat surface, for this you can use a large sheet of plywood, the edges of the glass should not hang over.
The rotation speed of the drill on the drill is set to “one” or to “minimum”, depending on the configuration of the drill. It is necessary to exclude a strong beating of the drill so that the glass does not crack when drilling, a drilling machine is better in this case.
With acetone or alcohol, degrease the surface of the glass in the place where we will drill it. The drill is placed in the center of the intended hole, the drill is turned on, when drilling, you need to drip a little on the glass, at the drilling site, turpentine. You can simply make a small circle-funnel out of plasticine and pour turpentine into it.
To prevent the glass from cracking, you need to press the drill easily, without any extra effort.
The second method will require:
- glass
- solder in the form of lead or tin,
- fine wet sand
- a stick sharpened under a cone, and the tip of the stick should have the diameter of the intended hole
- alcohol or acetone.
The work is performed as follows: the glass surface is degreased in the place where the intended hole will be located. Sand is poured into the drilling site, a slide of three centimeters in height. A hole is made in the sand with a stick so that a funnel is formed, the molten solder is poured into the funnel.
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