Conductors for drilling holes for dowels and confirmat. DIY jig for drilling holes DIY jig for perpendicular drilling holes
A drilling jig is an indispensable attribute in large-scale production, no matter what kind. 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 and the worker's work is made easier.
A drilling jig, as a rule, is a bar (plate) with holes and bushings (sleeves). Using a jig it is much easier, for example, to drill pipes.
As for furniture production, they are also used here, although relatively recently.
With the help of such equipment, the manufacturer is relieved of the following problems:
- Marking.
- Punching (point depressions in the material for a drill).
- Drilling while maintaining perpendicularity.
The latter is especially difficult to achieve, since it requires serious skills acquired only over the years.
Some operations, for example, drilling for dowels (short wooden rods designed for hidden joining of parts), require very precise markings, and no less accurate 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
Invoices. They do not require fixation before being used for their intended purpose. Structurally simple, mobile, but they need to be held with a hand free from the drill, since often the equipment is not secured in a special device, which is not very convenient. Considering the simplicity of the design, making it yourself is quite simple. Used when drilling chipboard and MDF.
Jigs for drilling holes at an angle. The design is easy to imagine, since the name speaks for itself. Such equipment can also be an overhead one. In production quality furniture There is also drilling at an angle, which is not the most simple operation V production process- this requires skill. Although in this case, sometimes the required angle is violated, as a result the assembly will not be of such high quality and the appearance of the furniture will suffer, especially if it is not made of chipboard, but of wood - here you can’t fill in an ugly drill. The equipment 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, you can drill several holes without reinstallation. To work with such equipment, the necessary skills are still required.
Device for drilling holes for dowels and confirmations
Despite the fact that today in the furniture industry there are many new fittings, the good old dowel is still used today. This is explained by the fact that the connections are not visible through this piece of fittings, and this is especially valuable in the production of furniture made from natural wood.
As already mentioned, drilling for dowels creates many problems for furniture makers, especially those who are not sufficiently qualified.
In order for the furniture planes to be perfectly aligned, precise markings are necessary, and this equipment allows you to speed up the work and bring the quality to the desired level.
Working with confirmats - special furniture screws - although less troublesome, also requires certain skills. And considering how many holes need to be marked and drilled before screwing the confirmation into one piece of furniture, such a device will significantly speed up the work, and its quality too.
The simplest devices
- The conductor is two-slider. It allows you to drill holes in two adjacent (mating) parts. The device is constructed of two rulers, which serve as guides and are connected to a mounting strip. The holes made in it make it possible to install a bar on the parts different widths. Housings moved along 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 travel limiter, pressed by a thumbscrew.
- The conductor is multi-position. Fastened with clamps. The design allows you to produce vertical drilling. It is made from thick-walled aluminum angle. Since the device is of considerable length, it is equipped intermediate fastening in the center of the structure. The thick wall of the angle was used very successfully, which cannot be overestimated at the moment of placing the device on the surface of the part and when reinstalling the jig to 90°. The selection of the distance between the bushings is carried out according to the most common values provided for installing dowels or confirmations.
Procedure for working with a conductor:
- The device is fixed on the workpiece.
- The sleeve is inserted into the hole.
- Drill through the sleeve.
DIY furniture jig: drawings with dimensions to help
The principle of this equipment:
- Angle type housing. It is superimposed on the planes of the parts, which will then be connected to each other.
- Guide bushings. The drill will go through them.
- 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 the help of this equipment it is possible to do most of the work performed related to various types of fasteners.
Important! If you need a universal assistant - this applies to professional furniture makers, then it would be better to purchase industrial equipment that is made more accurately and with high quality. It is this kind of 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 many 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 may not be needed very often in a given production, let alone home handyman- especially. So for many users it will be much more profitable to do it themselves.
If the design of such remains relevant, then you need to prepare materials for the manufacture of a homemade conductor for drilling for confirmation:
- Corner. Your choice should be made 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 guide bushings can be inserted, O.D. which reaches 6 mm. Based on this, you can use drills from 3.5 to 4 mm. Even if that diameter is not enough, then the material is drilled out with a large drill, without using any other devices.
- Guide bushings. Here pipes from stainless steel, which are selected primarily according to internal diameter. Example: a 6x1.5 pipe is suitable for a drill no larger than 2.7 in diameter. Explanation: internal hole it will be 3 mm, and a small gap along the entire internal diameter is taken into account due to thermal expansion material. The length of the sleeve 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 - these are available, for example, in mechanical engineering. Such parts (even used ones) come in handy: they are made of alloy steel and have an almost unlimited service life.
Choosing a mounting method
Options:
- Fixation using 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.
- Spring stop. It will securely fix the jig to the part. For such a stop, a flat spring with an appropriate clamping force is suitable.
- External clamps. Rubber pads must be placed under them. Corrugated rubber is ideal as a material. This, of course, slightly increases the weight of the equipment, and the elasticity of the pads can negatively affect the perpendicularity of the bushings. To prevent this from happening, the drill is inserted into the sleeve to mark the hole, and only then the clamps are clamped.
For drilling pipes and cylindrical parts
IN modern furniture Not only chipboard, fibreboard, MDF and wood are used. As additional elements may be applied steel pipes various diameters. Covered with chrome or stainless steel, they perfectly complement the overall furniture ensemble.
It is very difficult to drill into a spherical surface - the drill tends to slide to the side. And it’s not so easy to mark when there are a lot of holes and they are located in several rows.
In order to ensure that the pipe does not turn out to be the notorious colander, but the correct part with precisely made holes, you will need a jig - this perfect solution in the current situation.
There are steel conductors made in the form of an adjustable clamp. This design feature allows pipes to be clamped into them different diameters and drill holes in them with high precision.
Not being able to make such a device, you can use waste materials, making an even simpler device using a block and a strip of plywood. Thus, a block cut diagonally lengthwise into circular saw, can be nailed or screwed with screws at an angle of 90° to the plywood. The resulting device is placed on top of the pipe, and a strip of plywood, resting against a table or workbench, prevents the specified angle from being violated. Pre-drilled holes in the bar required diameter 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.
DIY furniture conductors and templates
How conductors are made is now clear, as is their necessity for furniture production.
Not only conductors, but also templates are needed in furniture production. The simplest template will sometimes save a lot of time and allow drilling to be no less accurate than a jig.
For example, the simplest metal prefabricated invoice template, consisting of two sheet blanks measuring 130x70 mm and a steel square with a cross-section of 20 mm. They are connected to each other with screws at the top of the structure - this is how they are attached to the square. The square is drilled for 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. And the price of this equipment is below any idea of savings.
Instead of metal, you can and should use those materials that are inexpensive and easy to process.
Materials:
- Plywood.
- Textolite or fiberglass - preferably thick.
- Hardwood.
- 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 summing up what has been said. Making a conductor or template yourself or buying it in a store is a matter for everyone individually. If a home craftsman needs to make some furniture in a single copy and there is material for a conductor, as well as the possibility of making it, you can use this. It is possible that such equipment will never be useful to the master again.
But if even a small furniture workshop is engaged in the production of serial furniture, and enough people work in it, it is probably easier to purchase something ready-made, especially since these irreplaceable helpers They will need several masters.
In the latter case, it makes sense to purchase more expensive, accurate and wear-resistant jigs instead of making homemade ones, which are less accurate and durable.
Good luck in your work!
When creating furniture, almost all parts are joined end-to-end. For this purpose, dowels are used in which holes must be made. This is what you will need a conductor for. Such equipment can be purchased or made by yourself.
Description and features of the device
The jig is a strip with several holes and sleeves. Such a device is fixed to required part, and then carefully insert a drill into the sleeve and make a hole. To secure two parts you will need one jig, making the fixation reliable.
Product advantages:
- drilling accuracy;
- simplicity and speed of creating holes.
It is worth noting that conductors are sometimes used in mechanical engineering, and not just in construction. Moreover, with the help of this device you can make holes in cylindrical workpieces and pipes. The conductor also allows you to do perpendicular holes.
Main types of equipment
All conductors used in various industries are are divided into several groups.
Methods and areas of application of the conductor
There are many ways to use this type of equipment. Naturally, the main area is considered construction industry.
Furniture industry
When assembling furniture, you may find that some holes are missing. It is for this reason that you will have to drill various parts with your own hands. To ensure that the work does not cause difficulties, it is necessary to use a conductor. This will make furniture assembly accurate and quick. The use of such equipment is really important if you do not have a drilling machine.
Although today there is large selection accessories and fasteners, dowels are still often used in the furniture assembly process. They must be installed very precisely, otherwise the parts will be displaced. To avoid such an unpleasant consequence, you should use a conductor.
Drilling pipes
If it is necessary to prepare holes in pipes and various workpieces cylindrical using a drill will not work best idea, since it often slips off, which means the holes will not have the desired shape. To make the job easier, you should use a universal jig.
It is worth noting that there is special equipment that allows you to perform perpendicular holes, and this is very important when processing rounded elements and edges of workpieces.
Purchased or homemade conductor?
As mentioned earlier, such a product is indispensable in the process of assembling furniture. Some people make these devices with their own hands, while others prefer to buy them.
Conductors are sold in almost any hardware store, however finished products may not be suitable for specific purposes. It is also important to remember that the cost of the device depends on the purpose, size and manufacturer. The most simple options are inexpensive, which cannot be said about professional equipment With a large number additional functions.
Many consumers prefer to make the conductor with their own hands. For this purpose you will need metal sheet or wooden board. Here, holes are prepared that will act as guides. In general, anyone can handle this type of work.
Making a conductor with your own hands
As already mentioned, you can make a similar product for drilling yourself. To do this you need to prepare welding machine, a grinder, a drill and several plumbing tools. You will also need fittings dimensions 10x10 mm.
- The workpiece is cleaned with sandpaper and markings are made. According to accepted standards, the distance between centers should be about 32 mm.
- Next, template holes are drilled.
- The next stage is creating a stop. This can be a metal plate 1 mm thick. It is carefully bent and the place for carving is prepared.
- Then both parts are carefully connected.
To ensure that the process of drilling holes does not cause any difficulties, it is worth using a jig. Such equipment is really indispensable in the furniture assembly process. You can buy it, but it’s better to do it yourself, because homemade device will definitely suit your specific needs.
The main fastening element in furniture assembly is the confirmat. It is screwed in with pre-drilled holes. It is the drilling of assembly holes in chipboard for confirmations that we will consider in this article.
To assemble the chipboard parts we will need:
- Screwdriver
- Confirmation bat
- Ruler or tape measure
- Pencil and awl
Hole depth and width
Usually a confirmat size of 6.4*50 is used. Because the thread diameter is 6.4 mm, and the diameter of the confirmation body is 4.4 mm, then for high-quality fastening of parts, the hole diameter must be in the range of 4.5-5 mm and a depth of at least 50 mm.
If the thickness of the hole is greater than the specified one, the confirmat will not hold the parts well; if it is less, its thickness can tear the chipboard.
For drilling, use a confirmat drill with a diameter of 4.5 mm, which is equipped with an additional head for drilling an enlarged hole for the neck of the confirmat, which also makes a countersink for its head.
Of course, you can also use regular drill with a diameter of 5 mm, but for high-quality fastening in the hole, you will additionally need to make space for the neck of the confirmat and its cap.
In order to perfectly fasten two parts, it is necessary to mark the places of their fastenings as accurately as possible.
On the part that will be applied to the end (the one on which there will be a through hole), you need to make two measurements - along the length (usually 5-10 cm) and from the edge - exactly 8 mm (this is if the thickness of the plate is 16 mm).
On a part that lies perpendicular, mark the drilling point at the end. Here you need to maintain the same distance in length (5-10 cm from the beginning), and in width - strictly in the center (8 mm from the edge).
Markings must be done as accurately as possible, especially along the length, because If the markings are incorrect, your parts may have extra gaps or protrusions when joined.
It is better to make a through hole in the first part, attach it to the second - and immediately use a drill to mark the drilling location at the end of the second part. And then, separately, calmly drill the hole.
We make a hole at a distance of 8 mm from the edge.
The drill should ALWAYS be held strictly perpendicular to the surface.
Before making a through hole, place a piece of unnecessary chipboard under the part. This will prevent chips from appearing on the reverse side.
When the through hole is made, the part can be drilled on the fly to drill holes for the neck and head of the confirmat.
The main rule is that when drilling at the end, the drill must be strictly perpendicular to the end of the part. If you don't hold the drill straight, the drill bit may move to the side and come out, ruining the part.
When drilling, you need to pull the drill out several times so that chips do not clog in the hole.
This option is considered the most accurate and, moreover, the fastest. But in order to make a hole in two parts at the same time, you will need to fix them before drilling. To do this, you may need special clamps, clamps and other devices.
Hole Drilling Tools
In order not to mark 8 mm from the edge each time both into the layer and at the end, you can use special device, which, by the way, is easy to do yourself.
It represents some wooden template with a metal sleeve for the drill inside.
It looks like this, see photo:
And this is a more professional thing:
Watch a short video on precision drilling holes in chipboard for confirmations and assembly of furniture parts:
Drilling for dowels
The hole for the dowels is made with an 8 mm drill. Also, in order not to drill through the part, it is advisable to equip it with a depth limiter.
At the end we drill with the same drill to a depth of 20 mm. Do not forget that during any work the drill must be strictly perpendicular to the plane of the part.
Of course, if you picked up a drill for the first time in your life, you won’t do very well. But this activity can be learned quite quickly.
A jig for drilling holes greatly facilitates the work of furniture makers and other specialists who, due to their line of work, have to make precise holes in wood, chipboard, MDF, metal and other materials.
What kind of conductors are there and whether this device can be made with your own hands are the main questions that the article is devoted to.
Basic information about conductors
Conductors – simple devices, a kind of templates that have been successfully used in mechanical engineering for a long time.
They allow you to make a hole in the right place and at a strictly defined angle. The scope of application of jigs is very wide, from drilling machines to diamond drilling installations.
Today, every furniture maker has in his arsenal a set of these tools that allow him to assemble furniture cabinets, install fittings and perform other operations.
Conductors are needed in construction (for example, to make holes in the wall of a building) and various industries.
As a rule, only overhead models are used here, which are made from lightweight materials to facilitate the work of the master.
A furniture jig can be factory-made or made by hand.
Many craftsmen have such a trained eye and precise hand that it is not at all difficult for them to drill holes at the desired angle without additional devices. However, this requires enormous experience and, perhaps, talent.
With the help of the tool that this article is devoted to, even a novice furniture maker will be able to make precise holes for dowels and assemble cabinet furniture without complicated preliminary calculations and markings. This reduces labor intensity and, therefore, the cost of work and speeds up the process.
Before you buy or make a conductor, you need to decide on the types and purpose.
Overhead jigs are so named because they are placed on the workpiece to be worked with. They are either fixed to the part or simply held by hand.
Using overhead tools, for example, holes are made in MDF boards.
Rotary jigs are necessary if you need holes on the surface of the cylinder. Inclined, vertical and horizontal rotation axes allow you to drill holes at different angles.
Unified jigs are especially in demand in small batch production, where it is necessary to drill many holes in similar parts of various sizes.
This is possible thanks to the ability to retool the tool under different size details.
The scope of application of tiltable conductors is the need to make holes in several planes.
The sliding jig does not need to be fixed on the surface of the machine - it is adjusted to the specific surface in which the hole needs to be drilled.
It is more convenient to work with fixed models, but sliding models provide the master with a certain freedom of action when working on a single-spindle drilling machine, especially if several holes are needed on one surface.
Something about the scope
The jig for drilling holes is included in the list necessary tools for furniture assembly. One of the difficulties when making any holes is that the drill may enter the material being drilled at the wrong angle.
It can take a lot of effort and time to correct the situation, and not all errors can be corrected.
The jig serves not only as a template, thanks to which the master understands where to drill, but also guides the drill and prevents it from deviating from the given direction.
First of all, the tool is necessary for specialists who produce furniture, but during assembly it is not so uncommon when a finished furniture set does not have the necessary holes, for example, for dowels.
The jig is indispensable for drilling thin boards, such as chipboard, for making holes at an angle and many other operations.
Accurate, simple, quick assembly furniture always involves this tool. With its help, you can make a hole at any distance from the edge of the part, regardless of its width.
One of the operations in which you cannot do without a conductor is the installation of dowels.
By and large, dowels are a thing of the past; in modern furniture production they already use other types of fasteners for connecting various parts cabinet furniture. However, connections using dowels are still quite widely used.
The main difficulty in assembling them lies precisely in the accuracy of the location of the holes, and in a strictly perpendicular direction, so that the parts can be connected at an angle of 90°.
If even one hole is in the wrong place or at the wrong angle, this will lead to errors that are quite difficult to correct. Special tool called a doweling jig.
Furniture is a common, but not the only area of application for drilling tools. The second important area is drilling pipes and other cylindrical blanks. Conductors allow you to drill even small-diameter pipes.
If collected various types templates for drilling on the same workbench, it turns out that they are very different in appearance and sizes.
Some are easier to buy factory-made, especially if making tools is not your hobby, others can be made with your own hands without much difficulty.
Multifunctional conductors from famous manufacturers They’re not cheap – by assembling them yourself, you can save a lot of money.
Conductors of our own production
The simplest tools are inexpensive, so many craftsmen find it easier to buy them. However, there are enthusiasts for whom instrument making is of some interest.
In addition, with your own hands you can make a truly durable tool that will faithfully serve for many years.
Another reason to make your own tool is if you need a template for custom holes.
There are a large number of drawings and video instructions on the Internet for making jigs for drilling with your own hands.
For this you need a set of tools:
- drill;
- corner grinding machine(Bulgarian);
- standard set of locksmith tools;
- welding machine - not necessary in all cases, but for making the most complex tools with your own hands, it may be required.
Another argument in favor self-production conductors - every master will probably have necessary preparations for their manufacture: wooden blocks, pieces of reinforcement, metal plates.
The template jig for accurately marking and drilling holes along it is so simple that even a novice craftsman can make it.
Take the fittings from square section 10 x 10 mm (or larger) – required length need to be cut with a hacksaw or grinder.
It is advisable to prepare the sections using a file and sandpaper. This is the basis of the future conductor.
Now you need to mark the holes. One of them should be located at a distance of 8 mm from the edge of the jig - at this distance is the central part of the chipboard board.
Furniture standards dictate the pitch between the holes - it is 32 mm. According to this marking it is necessary to drill holes with a diameter of 5 mm.
The jig is almost ready for use, but if you equip it with a stop, it will be much more convenient to assemble the furniture.
It is made from a metal plate 1 mm thick and 25 mm wide. The blank for the stop must be bent at a right angle and secured in a clamp together with a ready-made part made of reinforcement.
Now you need to make holes for the threads and fasten the two parts together with bolts.
The furniture jig can be equipped with half plastic bottle so that drilling holes is not so dusty. From the same plastic bottle you can build a small tray for collecting chips.
This is the simplest jig for drilling holes, which will make assembling cabinet furniture much easier.
With it, you don’t have to worry that the drill may go into chipboard board crooked or drill through it.
Precision drilling, used to connect wooden, metal and other elements to each other, is the key to the fact that the product will be of high quality, without backlash, durable and will be used effectively long time. When processing chipboard, OSB, MDF and other materials, it is recommended to use a drilling jig to achieve successful results.
Need for an assistive device
A do-it-yourself drilling jig helps both in domestic conditions and during industrial processing. This product is a thick metal strip. It has several holes, inside of which there are special bushings - sleeves.
Template makers can be manufactured in different options, but everyone has the same task - marking for drilling
A step-by-step algorithm that involves using a jig to drill holes in workpieces consists of the following steps:
- determine the drilling location;
- apply a conductor to it;
- fix the device in a convenient way;
- We put sleeves in the holes;
- drill in the indicated places.
Classification of markers
A jig for drilling holes with your own hands is used in different areas production activities. Based on similar characteristics, similar auxiliary devices are usually divided into several groups:
Jig for drilling holes
An overhead jig with a turret head is suitable for drilling standard holes for dowels of any size
The group is called this way because of the way it is operated. The product is usually installed on top of the intended workpiece and fixed using screw clamps. Less often, at home, it is based on an emphasis on any plane. This way you can mark holes for furniture screws.
Rotary jig for drilling holes
This jig is used for drilling at an angle. Comfortable processing is achieved due to guide bushings.
Tilting jig for drilling holes
Tiltable for use on multiple surfaces
The group is involved in drilling on several surfaces located at an angle to each other.
Sliding jig for drilling holes
They are in demand in areas where it is not possible to fix the marker. The guide bushings are mounted on folding bars.
Not only jigs are widely used for drilling holes for confirmation, but templates are also used in mechanical engineering, when it is necessary to make many of the same type of drills in workpieces.
This device has many advantages:
- achieves maximum accuracy in finished products;
- ease of operation;
- the ability to repeat the center distance on any surface at a convenient time;
- affordable cost of the finished product;
- can be done homemade conductor for any workpieces and different center distances.
VIDEO: How to make a self-centering jig for drilling holes for furniture dowels
Scope of application
During the furniture assembly process, some drawings indicate where to drill holes, inside which the pins will be located. In such a situation, you cannot do without an accurate tool. It will not be possible to align the mates on the parts being connected as clearly as possible with simple markings, so this will come in handy furniture conductor for drilling holes.
Even a simple device in the form of a strip with a stop greatly facilitates and speeds up the process of making holes of the same type
In addition, the templating engine facilitates quick detection of the required points after the marker is located. In addition to holes for dowels, cavities for installation are also needed door hinges. They can also be made using a rigid stencil.
Marking and drilling multiple holes at an angle or perpendicularly, at the end or on the main surface in a pipe without help is always problematic. This is due to the special geometry of the workpiece. You can also save time and get the desired result thanks to the conductor. The set of auxiliary devices can be supplemented with an installation that ensures perpendicularity of the drill entry.
The difference between store-bought and homemade
The importance of this equipment, which performs an auxiliary function, cannot be overestimated. Some people prefer to do it with my own hands so that the product has the necessary functionality and is suitable for a specific job. Other experts strive to choose the most comfortable product from the products offered in online stores.
When purchasing, you need to pay attention to the manufacturer. The final price tag depends on the capabilities of the template. At home, it is enough to use household units, but for daily operations it is worth acquiring a professional product.
Making it yourself doesn't take much time. Also suitable materials always at hand.
Homemade device
It must be taken into account that this device includes a certain number of parts:
- body corner element, which must be applied one by one to the workpieces intended for connection with dowels or self-tapping screws;
- guide bushings-sleeves through which the drill will pass during the drilling process;
- clamps that provide a strong connection between the tool and the workpiece through a screw or cam connection.
A homemade template should include drawings and markings that are most often found at home on furniture and other areas. You will need to stock up on special stops to help with the work. The average cost of finished samples will be about 500-1000 rubles. The difference between them is the dimensions, functionality and the number of guide bushings.
Assembly drawing of a homemade marker
How to make a jig for drilling holes with your own hands
Design begins with choosing a corner that will serve as a base blank. It is preferable to choose a base with different sides, as well as the greatest possible thickness of metal. According to GOST 8510, the most acceptable products will be those with side parameters of 63x40 mm and 8 mm thickness. With such overall dimensions, it will be possible to use bushings 6 mm long, but all that remains is interior space for a drill no more than 4 mm in diameter.
In most cases, these values are enough to make your own template with your own hands. Additionally, you will need bushings, which at home are usually cut from stainless steel, corresponding to GOST 9941 or GOST 9940 for seamless and all-welded pipes, respectively.
The choice should begin by selecting a tube according to its internal cross-section. Usually the 6x1 mm format is used, which makes it easy to use a drill with a 3.6-3.7 mm diameter. It is important to follow the rule that the minimum sleeve length can be twice the outer diameter of the tube.
The liner is seated with a slight interference fit or in a transitional format. It makes sense to do it in a shaft system, because the basis will be a stable outer diameter of the tube. It is for this that the voids in the corner are drilled. It is worth using the h9/P10 fit.
In some cases, a scriber is required to make sufficiently deep holes. This technique involves the presence of a stepped sleeve with collars. Strict GOST 12214 determines the parameters for machine jigs.
How many sockets to drill and how to position them is determined by the owner of the tool independently according to his needs. Traditionally, one of the following mounting options is chosen:
- using a spring-loaded stop that presses the jig to the part thanks to the elastic material;
- You can firmly fix the conductor using self-tapping screws, but when working with chipboard and similar materials you should refrain from this method;
- external clamps, under which there are rubberized gaskets for safety reasons.
VIDEO: How to make a marker for dowels
