What is a jig for drilling holes: precision in making furniture with your own hands. Drilling holes for confirmations Homemade jig for drilling

The jig for drilling holes is a bar small size, which has hole patterns located at certain angles and having different diameters for drilling. In fact, this tool is designed to solve the problem: to place the drill under right angle to the web of the processed material. After all, sometimes it is simply impossible to correct such a mistake.

Structural features and types of conductors

The drilling jig is actually a hole pattern that allows you to make them with maximum accuracy. They can be divided into two types:

• when the drilling axis is at right angles to the surface of the material;
• when the axis passes under a sharp or obtuse angle in relation to the plane.

The tool has such versatility that it finds application in various industries. For several decades, it has been very actively used in the engineering and construction industries. After all, it allows not only to drill holes in the desired workpieces at different angles and with excellent accuracy, having different configuration features. It makes it easy to drill holes in various building structures, as well as pipes of any material, etc. The conductor is often used in the furniture industry, as it greatly simplifies the process of fastening fittings and the assembly of its various parts. In fact, this is only a small front of the tasks that the conductor is able to solve.

Instrument classification

According to the functionality and design functionality, the drilling jig is divided into types:

• overhead. The name comes from their functional way of working, that is, they are superimposed on the blank part or the surface to be processed, attached to it with special clamps or held by hand. Such a device is applicable for drilling flat surfaces, for example, boards, MDF boards and chipboard. That's what they call him furniture conductor for drilling holes. Thanks to the use of the jig, the holes themselves are very neat and verified;
• rotary. Such templates are great for drilling a round or cylindrical surface. Thanks to this design, the axis occupies a horizontal, vertical and inclined position to the surface. This is possible thanks to bushings that can guide the drilling line;
• universal. This design means are widely popular in small industrial productions, where fast adjustment to the existing surface plays an important role. Due to their uniqueness, they are also in demand in household when you have to work with different materials, planes and surfaces;
  overturned. In terms of functionality, they resemble something universal. They are needed when you want to make a hole in different planes and at different angles. It is very convenient for carrying out some repair work when you want to drill a hole in the wall without high costs in time and at a specific angle;
• sliding. According to its name, such a conductor does not have to be attached to the surface where it is supposed to be applied. It should be noted the inconvenience of such a conductor in handling, as it requires constant hand holding;
• fixed. Unlike sliding conductors, they are attached to the place where they are intended to be used. It is much easier to fix them, but due to their design they limit the scope of human work. This can be clearly seen when working on walls or vertical planes having only one spindle.

Such templates allow you to maintain perpendicularity between the pipe or sphere and the drill itself. It is very important.

Furniture jigs for drilling holes deserve a separate description.

It is practically impossible to do without conductors or similar templates in the production of furniture, especially when assembling all the structural elements of future furniture. First of all, they correct such an error as an incorrect angle of entry of the drill into the workpiece. As you know, correcting such a mistake is very difficult, sometimes even impossible, and if possible, it takes a lot of time. The jig not only allows you to position the drill relative to the part, but also allows it to move away from the intended direction of drilling during operation.

They are used when it is required to drill holes for fasteners. In this case, a conductor is used for confirmants or dowels. Without them, drilling such holes is simply impossible. And how often does it happen that when assembling furniture, there is a shortage of a certain number of holes necessary for the final assembly.

Angle hole jig

The jig for drilling holes at an angle is used for assembling furniture. Often it is used for drilling not too thick MDF boards or chipboard, plywood. Also used in production. They can be manufactured both in a specialized version, for specific operations, or in more universal form. They reduce the time for making inclined holes. Moreover, by eye to make them the same way exactly will not work.

At home, drilling at an angle is not often necessary, but such a need arises. This kind of conductor can be made independently, or you can buy it. The reason is that if you do not engage in mass production, then preparing templates for non-standard holes will most likely not justify the cost. It will be easier and cheaper to try to drill the hole as needed, but with small deviations, than to make templates. It may never be useful again. It's up to the owner to decide.

The jig for drilling holes for dowels is one of the simplest templates in its version. However, you should be aware that such templates should simplify the work of the master, and not complicate it when he is forced to use complex devices.

Used to assemble furniture. It should provide simultaneous drilling of holes without changing the device. For the manufacture of different materials are used with different strength characteristics. The most durable can be considered a unit made of steel.

Conductor for confirmation of variety and the possibility of manufacturing

Also the easiest jig for drilling a hole for confirmation. Such a conductor is assembled at home without much difficulty. It makes sense to assemble it yourself if you are professionally manufacturing furniture. For drilling one or two holes it is impractical.

More complex drawings can be taken from any source on the Internet. With the complication of the constructiveness of the device, its range of use expands. In order not to bother with constructively complex devices, can be made from readily available materials, such as metal plates, wood bars, fittings or corners. Welding consumables may be required for working with metal, although locking elements can be attached to threaded bolts.

Advantages and disadvantages

According to its functional purpose, the conductor acts as a template, according to which it is necessary to drill a hole in the required material with maximum accuracy to the original. Such a template greatly facilitates the work of the master when it is necessary to drill a strictly vertical, horizontal or inclined hole.

The master no longer needs to make sketches, measurements, having such a tool with him. The drill is located strictly at the required angle, which is necessary in the process of work and cannot deviate. This improves the accuracy of work, which can be seen in the example of deep holes.

To work with furniture, the conductor must meet the following requirements:

• it should help and speed up the process of assembling furniture, not require the use of sophisticated equipment;
• allow you to make several holes at once without the need for manual markings;
• increase work with a drill;

The materials from which conductors are made have different strength characteristics. Basically it is plastic and glass from organic raw materials. But the most durable are obtained from metals, namely steel. Therefore, when choosing, you should pay attention to the following characteristics:

• minimal deformation under heavy loads;
• a clear axis of the direction of the drill;
• no heating during operation.

AT furniture production use lighter conductors that are easy to handle. Factory or homemade options can be used.

It should be noted that a real master has a trained eye, so often all these devices are not needed to make the hole correct.

A clear advantage of such tools is ease of use. With their help, even an inexperienced person will be able to do all the work at the level of a skilled worker. Here you don't even have to do anything. complex calculations and have great experience. Its main purpose is to speed up the work process many times over.

Homemade conductor apparatus

A do-it-yourself jig for drilling holes is a great alternative to store options. Since the store does not always have exactly the option that is required in this moment. It can be assembled at home.

Let's consider a more popular and standardized option, suitable for more frequently performed jobs like furniture assembly.

Scheme for assembling the conductor Reinforcement with a diameter of 10 mm or more is required. With help cutting tool, for example, grinders, cut into segments of the required length. Clean the blanks with sandpaper. According to the standard, all drilled holes have a distance of 32 cm between them. Make marks and drill holes. The next step is to create reference points for our blanks. For these purposes, a plate made of any metal is perfect. Thickness from 1 mm. It is unwise to use a thicker plate, as it only adds weight to the entire device. They are connected together and then places for threaded fastening are outlined. They are connected and attached to each other. That's it, the device is ready to use.

The main purpose of the conductor, it is the most important thing, is to simplify the work with the drill and reduce the assembly time of furniture. The difference between purchased and homemade device is its adjustment to the specific needs of the master.

It is possible to accurately and accurately make holes in products made from natural wood, chipboard, MDF, metal and other materials. convenient fixture like a conductor. Such a device, in particular, is actively used by specialists involved in the production of furniture. At the same time, the conductor can be either purchased in serial execution or made by hand.

Design features and types

The jig, in fact, is a template for drilling holes, allowing them to be made as accurately as possible. It is also used to create holes, the axis of which is perpendicular to the surface of the part, and for drilling at an angle.

Due to their versatility and simplicity, drilling jigs are actively used in various fields. In particular, in the engineering industry, they have been successfully used for drilling holes in workpieces for a long time. different configuration and made from different materials. It is impossible to work without a conductor in the furniture industry, where such a device is actively used when assembling furniture, installing accessories on it and performing a number of other technological operations. Construction is another area where conductors find wide application. With their help, in particular, they drill holes in building structures. Jigs are also needed for drilling pipes and other tasks.

As a furniture conductor, overhead models are most often used, made of lightweight materials, so that it is more convenient to manipulate them. You can purchase such devices in the factory version or make a furniture conductor with your own hands. Qualified furniture makers may not use a jig to drill a hole in furniture construction elements with high quality and accuracy, but for this they must have extensive experience in their field.

The most significant advantage of the conductor is that with its help a high-quality and precise drilling both perpendicular to the surface of the part, and inclined hole can be performed even by a person who does not have high qualifications. The use of conductors eliminates the need for complex preliminary calculations and marking the locations of future holes, which reduces the complexity of assembling the furniture structure and allows you to perform such work in a shorter period of time. Even a novice specialist can understand the use of a jig for drilling under dowels and for solving other technological problems.

Before you purchase or make your own homemade jig, determine what tasks you need to use it for, and based on this data, select its type and design.

Among the conductors for drilling holes by type of construction and functionality a number of categories can be distinguished.

These conductors are called so because they are applied to the workpiece and fixed on it, or simply fixed by hand. By conductors of this type, in particular, drilling holes in chipboard, MDF boards and other flat parts.

Such templates can be used to make holes on cylindrical parts. Conductors of this type are equipped with vertical and horizontal axes of rotation, which makes it possible to perform holes with their help at various angles.

These are fixtures that are especially relevant for small batch production, where the ability to quickly change over the equipment used is important. The conductor of this type is just endowed with such functions.

These hole-drilling tools are required when such technological operation have to be done on multiple levels.

The sliding jig, in full accordance with its name, does not require fixing: it is simply applied to that part of the surface of the part where the hole needs to be drilled. Fixed jig devices, although they are more convenient, somewhat limit the freedom of action of a specialist, which is especially critical when performing drilling work on machines equipped with only one spindle.

Areas of use

Furniture conductors and templates are devices that are practically indispensable when assembling furniture structures. The use of jigs avoids the main problem that occurs when drilling holes - the drill enters the workpiece at the wrong angle. Correcting this error takes a lot of time and effort, and it is not always possible to fix it at all. The jig used for drilling holes not only allows the drill to be correctly oriented at the machining site, but also prevents the tool from going astray.

Devices such as furniture jigs and templates are used both in the manufacture and assembly of furniture, when it is necessary to make holes in the elements to be joined to accommodate fasteners. In such cases, a jig for dowels or a jig for drilling for confirmation is often used, without which to perform quality holes under fasteners is not possible. Such a device is indispensable in cases where it is required to make holes, including at an angle, in thin slabs (in particular, when making holes in chipboard or MDF).

When using a jig for drilling holes, the process of assembling furniture is simple and fast. Using such a device, holes can be drilled at any distance from the edge of the part, regardless of its width.

AT modern furniture dowels are actively used, which at the same time are quite an outdated fastener. That is why the jig for dowels (doweling jig) is used in the production of furniture structures. The main difficulty when using such fasteners is that the axes of the holes made in the parts to be joined have a right angle between them. Accordingly, such holes should be located strictly perpendicular to each other. Without the use of such a device as a jig for dowels, it is difficult to perform them.

Furniture production is not the only area in which conductors are used for drilling holes. Templates are no less often used in order to drill a hole in a pipe and other parts that have a cylindrical shape. Conductors allow you to make high-quality holes even in pipes of small diameter.

The size and principle of operation of modern conductors can be different. Some of the models of such devices are much easier to buy, and some are easy to make with your own hands. In favor of making a furniture jig for drilling holes with your own hands, the fact that serial devices, especially for universal purposes, are not cheap, also speaks.

Homemade conductor devices

Conductors the simplest design, for example, those that are used to drill holes for confirmation are relatively inexpensive, so many craftsmen are not puzzled by them self-manufacturing and purchase serial models. Meanwhile, there are those who are even simple devices trying to do it by hand. The question of how to make a jig for drilling with your own hands often appears and, if necessary, drill non-standard holes.

To independently make a jig for dowels or a simpler jig for confirmations, you can use the drawings and videos on the Internet.

For the manufacture of such a device, of course, its drawing is required. Need also minimum set tools and equipment:

• electric or hand drill;
• a set of locksmith tools;
• Bulgarian;
• welding machine(for the manufacture of conductor fixtures of a more complex design).

The simplest homemade jig can be made from improvised tools and materials that are abundant in most home workshops or garages. The use of materials such as pieces metal fittings, wooden bars, metal plates, etc., allows you to significantly save on the purchase production model devices.

Making a homemade jig for a drill or a single-spindle machine takes place in several stages.

1. Square reinforcement with a cross section of 10 by 10 mm, using a hacksaw for metal or a grinder, must be cut into pieces of the required length.
2. The centers of the holes to be drilled through must be 8 mm from the edge of the jig plate. It is at this distance that the center is located chipboard or MDF, in which a hole is drilled.
3. The step between the holes on the conductor in accordance with generally accepted furniture standards is 32 mm, while the diameter of such holes should be 5 mm.
4. If you equip a homemade jig with an emphasis, then using such a device will be much more convenient. To create such an emphasis, you need a metal plate 1 mm thick and 25 mm wide, which is bent at a right angle and fixed on a ready-made jig made of reinforcement.
5. After the structural elements of the homemade conductor are fixed with a clamp, they must be securely connected to each other using threaded fasteners.

Quite often there is a need to drill a hole at a certain angle, at exactly preset depth or with a normalized indent from the edge. In the conditions of an equipped workshop, this is not difficult to do, but in field work you have to use various devices.

Device and scope

There are a lot of options for drilling devices, but all of them are united by the presence of three structural elements. The first is the guide bush, which is made of steel with increased hardness, has a ground inner surface and is distinguished by precise diameter tolerances. Even with a sleeve length of 10 mm, a deviation from the given direction is not more than 0.5 °, especially if the sleeve is at some distance from the surface of the workpiece.

Second structural element- a device for fixing the conductor on the workpiece or the surface to be treated. As a rule, one or more screw clamps act as such an element, which makes it possible to reliably immobilize the jig relative to the workpiece. If we are talking about a device for drilling walls, a handle, a vacuum suction cup or perforation for installation on a temporary point fastener can act as a fixation element. In any case, the need to immobilize the conductor is clearly dictated not only by the requirements for high accuracy, but also by the need to ensure the cleanliness of processing and to exclude damage to the surfaces adjacent to the hole, especially slippery ones.

The third structural element is the positioning system of the conductor according to the marking or base surfaces. The drilling area when using a jig is usually not visible, so there may be additional holes on the body of the jig with marks, the centers of which are exactly aligned with the axis of the drill guide. Also can be used side stops for parts with base planes - this positioning principle is implemented in jig for drilling ends.

For furniture assembly

The most famous conductor, which is widely used in the manufacture of cabinet furniture additives, is KWB Dubelprofi. This is enough universal fixture, which has an adjustable stop for drilling exactly in the center of the butt and with a certain indent from the edge, which makes the jig an excellent help in making holes for confirmation according to a separate scheme with high precision adjustment. There is also a turret with guides of different diameters, thanks to which the product can be quickly reconfigured also for making connections on dowels or body ties. Particularly pleasant is the presence of a guide protrusion for visual alignment of the end and reciprocal holes.

For the installation of cabinet furniture, there is big number more simple conductors. The greatest difficulty is drilling the ends of the parts: it is necessary to maintain not only centering, but also parallelism to the main planes, otherwise swelling will occur when the fasteners are tightened. To solve this problem, such conductors as LUXTools, Wolcraft, NAREX as well as CMT656 and many other nameless, but less efficient linear conductors, in which the guides are located with fixed indents, can be used, which also greatly simplifies the implementation of additive schemes. Particularly advanced in this regard is the Cheron series of conductors and templates, with the use of which the assembly of furniture at confirmations is accelerated significantly. The conductors SMT333 and SMT334 are excellent for installing hinges, but this drilling technology implies the need to install 8mm threaded bushings.

For carpentry

The list of conductors for the preparation of carpentry joints is the most diverse. For these purposes, both single products and entire series of devices are successfully used, the use of which significantly expands the range of operations performed.

One of the most common types of conductors allows you to quickly and accurately drill for countersunk connections on oblique screws. Examples include the Wolcraft Undercover Jig, Kreg Jig Mini and Kreg Jig K Master. These fixtures are very different in design, some may not have regular means of fixation and require the use of quick-clamp clamps. Nonetheless technical execution of all conductors is at a high level.

In general, the products of such brands as Kreg, Wolcraft and CMT are complete systems for making carpentry joints on dowels and minifix / rafix ties, as well as marking and drilling combined holes, including blind ones. In the rulers, you can find guides for making box connections on grooves like " dovetail» and conductors that replace lamellar routers.

general purpose

The scope of drilling jigs is not limited to carpentry and furniture assembly. Thus, the already mentioned KWB Dubelprofi and similar devices are ideal for drilling holes on flat surfaces, for example for fastening in walls. Jigs with a V-groove on the sole are practically the only tool that allows you to quickly and accurately drill into round pipe or into a rectangular edge of the part.

The need to drill strictly perpendicular holes in concrete and brick walls often occurs during the manufacture of openings or the need to bypass hidden technological channels or fittings. In the simplest case, Wolcraft Tecmobil or KWB 7778 drilling stands can be used for these purposes; these devices are also designed for desktop use. In the case of making holes of a significant diameter, devices such as Mechanic Distar, designed, among other things, for drilling with pobedite crowns, are of great help, in the same series there are convenient dust collectors.

The most serious and highly specialized conductors are called racks for diamond drilling. In this segment, you can find budget options, such as the Titan HC 1000, as well as expensive accessories from Bosch and AGP. Distinctive feature such conductors - the presence of a split coupling for attaching the spindle neck of a drill or hammer drill, or a specialized drilling machine. Also, the conductors have a mechanical feed device, which, when used diamond crowns is a mandatory requirement.

Independent production of conductors

As a conclusion, it should be noted that most craftsmen do not have to spend money on fairly expensive drilling fixtures. For one-time technical operations, it is not required that the conductor be designed for drilling hundreds of holes, therefore, in some cases, the usual wooden block, in which drilling machine made a series of holes desired diameter, as well as drills with an elongated shank.

For more technological solutions, you can use a system of a seamless pipe, perpendicularly fixed on a metal plate, and a bearing located inside it right size. Such a design can be minimal effort completed with stops, screw clamps and centering holes.

When working with hand drill, sometimes it is difficult to maintain the given direction of the hole. Also, conductors are used if it is necessary to make a number of similar holes according to the pattern. For example, in carpentry. In this case, the master does not waste time marking the tree, and is guaranteed to get the same result.

The conductor is indispensable when drilling holes in pipes. But the main application is the passage of holes at a given angle.

Consider various options this useful tool:

Jig for perpendicular hole drilling

A simple furniture jig for drilling holes when assembling metal furniture. Details in the video

Purpose - obtaining passes in thick workpieces, strictly at an angle of 90 °. It is a set of bushings in a single housing, or a bracket with interchangeable working nozzles.

By setting the fixture above the drilling point, you can start working without first punching. The drill exactly hits the center of the sleeve and does not deviate from the axis.

Important! The only problem is that the tool must be held on the workpiece, especially at the beginning of work. Otherwise, it may move due to vibration.

Such a jig for drilling can be made by hand. Thick textolite or solid wood is used. Perfect option- the use of bushings from the extruder for drawing the wire. Worn bushings can be found at the factory.


Nozzles for the extruder are made of alloy steel, with the addition of Pobedit. The service life is practically inexhaustible.

Jig for cylindrical blanks or pipes

Making a hole in a sloping surface is almost impossible. It is especially difficult to start the process - the tip of the drill jumps off given point. The device will fix the direction, and will allow you to perform work with high accuracy.


By adjusting the length of the fixing bolts, a hole can be drilled tangentially to the center. If there is no such tool at hand, it can be made from improvised materials. For example, from a bar solid wood and strips of plywood.


So that the guides do not break so quickly with the sharp edges of the drill, they can be reinforced with tube sleeves different diameter.

Drilling jig - an indispensable attribute on large-scale production, no matter which one. Where there is a lot of drilling, it is really necessary, especially when production is serial or mass.

With the help of a conductor, production is greatly accelerated, the work of the worker is facilitated.

A drilling jig, as a rule, is a bar (plate) with holes and bushings (sleeves). By means of a conductor, it is much easier, for example, to drill pipes.

As for the production of furniture, they are also used here, although relatively recently.

With this equipment, the manufacturer is relieved of the following problems:

• Markup.
• Punching (point recesses in the material for the drill).
• Drilling with observance of perpendicularity.

The latter is especially difficult to do, since it requires serious skills acquired only over the years.

Some operations, such as dowel drilling (short wooden rods designed for concealed joining of parts), require very precise marking, and no less precise drilling at an angle of 90 °.

With such a device as a conductor, these tasks are solved easily and simply.

Types: choose the one you need

Overhead. They do not need fixing before their intended use. Structurally simple, mobile, but they need to be kept free from the drill by hand, since often the equipment is not fixed in a special device, which is not very convenient. Given the simplicity of the design, making it yourself is quite simple. Applicable for chipboard drilling and MDF.

Conductors for drilling holes at an angle. The design is easy to imagine as the name speaks for itself. Such equipment can also be consignment note. In production quality furniture there is also drilling at an angle, which is not the easiest operation in manufacturing process- it takes skill. Although in this case it is sometimes violated desired angle, as a result, the assembly will no longer be of such high quality and suffer appearance furniture, especially if it is not made of chipboard, but of wood - here you can’t putty on ugly drilling. The equipment of the desired design completely eliminates unnecessary problems.

Rotary conductors. They have folding brackets, and this allows drilling on two adjacent planes.

Sliding gearboxes. With their help, without reinstallation, you can drill several holes. To work with such equipment, however, the necessary skills are required.

Device for drilling holes for dowels and confirmations

Despite the fact that today furniture industry a lot of new fittings appeared, the good old dowel is still used. This is due to the fact that the joints are not visible through this piece of fittings, and this is especially valuable in the production of natural wood furniture.

As already mentioned, dowel drilling creates a lot of problems for furniture makers, especially those who are not qualified enough.

In order for the furniture planes to be perfectly joined, it is necessary precise marking, and this equipment allows you to speed up the work and bring the quality to the desired level.

Working with confirmations - special furniture screws - although less troublesome, but also requires certain skills. And given how many holes you need to mark and drill before screwing the confirmation in one piece of furniture, such a device will greatly speed up the work, and its quality too.

The simplest devices

1. The conductor is two-slider. It allows you to drill holes in two adjacent (mating) parts. The fixture is constructed from two rulers that serve as guides and are connected to mounting plate. The holes made in it make it possible to set the bar on the details different widths. Housings moved along the rulers (replaceable) have a set of guide bushings, where the distances between them are different. The conductor is fixed by means of a connecting strip, with opposite side there is also a stroke limiter, pressed by a lamb screw.
2. The conductor is multiposition. Attaches with clamps. The design allows for vertical drilling. It is made from thick-walled aluminium. Since the device has a considerable length, it is equipped with intermediate fastening in the center of the structure. The thick wall of the angle was very successfully used, which cannot be overestimated at the moment the device is applied to the surface of the part and when the conductor is reinstalled by 90 °. The selection of the distance between the bushings is carried out according to the most common values ​​\u200b\u200bfor the installation of dowels or confirmations.

How to work with a conductor:

• The device is fixed on the workpiece.
• The sleeve is inserted into the hole.
• Drill through the sleeve.

Do-it-yourself furniture conductor: drawings with dimensions to help

Principle of this equipment:

1. Corner case. It is superimposed on the plane of the parts, which will then be connected to each other.
2. Guide bushings. A drill will enter through them.
3. Clamping devices. They fix the conductor and are made from the end part.

Designing your own jig should be based on the fact that with this equipment you can do most of the work performed related to fasteners of various types.

Important! If you need a universal assistant - this applies to professional furniture makers, then it would be better to purchase industrial equipment, which is made more accurately and efficiently. It is such a device that will be preferable and will quickly pay for itself, especially if you also take into account the fact that this device often comes with a lot of different templates, stops and other little things that are also necessary in the work. They are much cheaper than buying at retail.

And yet this device, if necessary, can be made with your own hands.

Such equipment, perhaps, is needed not so often in a particular production, and even home master- especially. So for many users, doing it yourself will be much more profitable.

If such design remains relevant, then it is necessary to prepare materials for the manufacture of a home-made conductor for drilling for confirmation:

• Corner. You should stop your choice on the unequal type of this rental - its possibilities are wider. The corner shelf must be chosen with the greatest thickness, which can reach up to 8 mm. This is quite justified, since then you can insert guide bushings, outside diameter which reaches 6 mm. Based on this, drills from 3.5 to 4 mm can be used. Even if that diameter is not enough, then the material is drilled with a large drill, without using any other devices.
• Guide bushings. Here it will be preferable to use stainless steel pipes, which are selected, first of all, according to the inner diameter. Example: a 6×1.5 pipe is suitable for a drill no larger than 2.7 in diameter. Explanation: its inner hole will be 3 mm, and a small gap along the entire inner diameter is taken into account due to the thermal expansion of the material. The sleeve length is the depth of the hole in the corner, multiplied by two or more. The fit of the bushings is either transitional, or with an interference fit, or according to the shaft system. The latter is the most appropriate.

Instead of pipes, of course, you can use ready-made bushings used in wire drawing machines - such are available, for example, in mechanical engineering. Such parts (even used ones) will come in handy: they are made of alloyed steels and have an almost unlimited service life.

Choice of mounting method

Options:

• Fixation with self-tapping screws. They are screwed into the part, which prevents the device from moving due to friction. This is convenient because these marks will be needed for subsequent drilling of other holes.
• The emphasis is spring. It will securely fix the conductor on the part. For such an emphasis, a flat spring with an appropriate clamping force is suitable.
• Clamps external. They need to be placed underneath rubber gaskets. Corrugated rubber is ideal as a material. This, of course, slightly increases the weight of the tool, and the elasticity of the pads can negatively affect the squareness of the bushings. To prevent this from happening, the drill is inserted into the sleeve in order to mark the hole, and only then the clamps are clamped.

For drilling pipes and cylindrical parts

In modern furniture, not only chipboard, fiberboard, MDF and wood are used. As additional elements steel pipes of various diameters can be used. Covered with chrome or stainless steel, they perfectly complement the overall furniture ensemble.

It is very difficult to drill a spherical surface - the drill strives to slip to the side. Yes, and marking is not so easy when there are a lot of holes and they are arranged in several rows.

In order for the notorious colander to turn out of the pipe, but the correct part with precisely made holes, you need a jig - this perfect solution in the given situation.

There are steel conductors made in the form of an adjustable clamp. This design feature allows you to clamp pipes of different diameters in them and drill holes in them with high accuracy.

Without being able to make such a device, you can use waste materials, making an even simpler device using a bar and a strip of plywood. So, a bar cut diagonally lengthwise into circular saw, can be nailed or screwed with screws at an angle of 90 ° to plywood. The resulting device is superimposed on top of the pipe, and a strip of plywood, resting against a table or workbench, does not allow the specified angle to be violated. Holes of the required diameter pre-drilled in the bar are placed taking into account the required distances between future holes, which will allow you to quickly and accurately drill the pipe exactly according to the drawings.

Do-it-yourself furniture conductors and templates

How conductors are made is now clear, as well as their need for furniture production.

Not only conductors, but also templates are necessary in furniture production. The simplest template will sometimes save a lot of time and enable no less accurate drilling than a jig.

For example, the simplest metal prefabricated invoice template, consisting of two sheet blanks measuring 130 × 70 mm and a steel square with a cross section of 20 mm. They are interconnected by screws in the upper part of the structure - this is how they are attached to the square. The square is drilled under the bushings, where the latter are pressed. Such a device for drilling holes in the end of a part made of chipboard will make it possible to drill without thinking about marking and perpendicular drilling at all. And the price of this equipment is below any idea of ​​\u200b\u200bsavings.

Instead of metal, you can and should use those materials that are inexpensive and easy to process.

Materials:

• Plywood.
• Textolite or fiberglass - preferably thick.
• Hard wood.
• Hardboard or its equivalent.

It must be borne in mind that these materials are short-lived, and so that the devices do not have to be made every day, it is quite reasonable to press metal tubes into them.

In conclusion, it is worth summarizing what has been said. Making a jig or a template yourself or buying it in a store is up to each individual. If a home craftsman needs to make some kind of furniture in a single copy and there is material for the conductor, as well as the possibility of manufacturing it, you can use this. It is possible that such equipment will never be useful to the master again.

But even if a small furniture workshop is engaged in the production of mass-produced furniture, and enough people work in it, it is probably easier to purchase something ready-made, especially since they will need several copies of these irreplaceable assistants to the craftsmen.

In the latter case, it makes sense to purchase more expensive, accurate and wear-resistant conductors instead of making handicraft ones that are less accurate and durable.

Good luck in your work!