An electric jigsaw is a very popular tool and is available to almost every craftsman. Currently in production a large number of jigsaw blades that can easily handle not only wood, but also many other materials. In order to understand what types of jigsaw files exist, let’s consider this issue in more detail. Exist universal files for a jigsaw, but with the help of such blades it is impossible to perform any type of work efficiently. They are rather intended for rough work, during which the quality of the work performed does not have of great importance. Therefore, for narrowly focused activities you will have to choose a canvas that meets your requirements. The canvases differ not only in characteristics, but also in appearance. There are saws for wood, files for metal, as well as for drywall, ceramics, and so on. When choosing a canvas, important criterion is the tooth pitch. In Russia, a step is considered to be the gap between the tops of the teeth, which is denoted by the letter t. In some other countries, the pitch is the number of teeth per inch of blade, which is denoted by the abbreviation TPI. Therefore, when choosing a step, you should pay attention to the markings (inscriptions on the side) and only then draw conclusions. In addition to the pitch, an important criterion is the width of the file. The width affects the speed and quality of the cut. When cutting complex lines, it is worth choosing narrow blades, which are much easier to control and create different cutting lines. It is advisable that between five and eight teeth be used when operating a jigsaw. Otherwise, the jigsaw will vibrate and create a crooked and rough seam. When choosing a blade for a jigsaw, you should pay attention to the material of manufacture. You can find out this information from the inscription on the jigsaw file.

Types of web markings

Let's look at the types of markings indicating the material used to make the canvas:

1. H.S.S. This means that the file is made of hardened steel, which can be used at high speeds. These blades are widely used for cutting durable surfaces, including metals of various densities. Despite their impressive rigidity, steel files often break, so they must be used with extreme care.
2. HIM. Blades with this inscription are used for cutting tiles and tiles, as they have a high margin of safety.
3. HCS. This tool is suitable for working with wood. The blades are made from high-carbon steel, due to which they have great elasticity. Suitable for any wood products.
4. BIM. Bimetallic alloy blades incorporate all the best from the above models. It combines strength and elasticity. Thanks to these technical specifications, the blade can be used to cut not only wood, but also metal products.

Not only the inscription, but also its color can tell about the purpose of the canvas:

• white color of the blade - for cutting wood and metal products,
• gray color - for cutting wood and various products made from wood,
• blue color - designed exclusively for cutting metal structures,
• black color indicates that the file is intended for special materials(tiles, stone).

In addition, there are many more file markings:

• the first number “1” means a short length of the canvas up to 7.5 centimeters;
• the first digit "2" means average length canvases from 7.5 to nine centimeters;
• the first number “3” means that the canvas is long from nine to fifteen centimeters;
• the first number “7” means a very long file, more than fifteen centimeters;
• The letters (A,B,C,D) after the numbers indicate the size of the teeth.

Marking of wood files

Saw blades for woodworking are marked as follows:

• T101B is a short blade with small teeth that provides an even and neat seam.
• T101BR has reverse tooth and is suitable for cutting materials with decorative surface. Such materials include laminate. Peculiarity of this canvas Helps avoid unwanted chips.
• T301CD is designed to work with material whose thickness does not exceed 6.5 centimeters.
• T101AO file is designed for figure cutting.
• T101BIF is a blade made of a bimetallic alloy. Used for cutting materials up to fifteen centimeters thick.
• T101BRF bimetal blade with reverse tooth.
• T144DP is a large toothed blade designed for fast, rough cutting.

The markings for metal files look like this:

• T118A file with fine teeth, for accurate cutting of small structures.
• T318A is designed for sawing metal pipes, with a diameter of up to 6.5 centimeters.
• T118G is a blade for cutting very thin metal plates.

Special files can be identified by the following markings:

• T118AHM blade for working with thin products from of stainless steel,
• T301CHM sheet for fiberglass, the thickness of which does not exceed 6.5 centimeters,
• T141HM blade for accurate cutting of drywall,
• T101A organic glass cutting blade,
• T313AW blade for cutting cardboard and rubber, the thickness of which does not exceed five centimeters,
• T150Riff is a specially designed blade that allows you to cut tiles and tiles.

Jigsaw blade for wood

The wood saw allows you to work with plywood, soft and hard wood, parquet, laminate and many types of boards. The jigsaw file for wood has a very important feature. The fact is that it has a large pitch between the teeth. The distance can reach four millimeters. When compared with other types of paintings, the difference is noticeable to the naked eye. The wood file can also be different. They differ from each other in the working length of the tooth and pitch. Such differences allow you to ideally select the canvas for specific type wood In connection with such diversity, the question arises of how to choose a blade for a jigsaw for wood. In this case, you need to set priorities, since the blades are divided into two main categories: quick cutting and smooth seams. The larger the teeth of the blade, the faster you can cut the wood, but this may result in an inaccurate seam. Therefore, you will have to sacrifice something or choose a middle ground. If cutting speed is a priority, then for such purposes you can purchase a blade marked T101D. With it you can quickly cut wood up to eight centimeters thick. For thicker workpieces, wood blades labeled T244D or T344D are suitable. For more delicate work and neat seams, model T101B is suitable. This model is often used in furniture factories for the implementation of clean. Using this blade, the cut is smooth and without jagged edges. It can be used to cut even thick wood, but it will take a lot of time. When cutting laminate or parquet, chips, torn seams or nicks are unacceptable. The seam must be perfectly smooth, without visible defects. This work can be done using a wood saw with a reverse tooth. As a last resort, you can use T101B, but before doing this, cover the cut area with tape or tape. This precaution is necessary to avoid chipping the decorative surface.

Metal file

To cut metal products you will need an electric jigsaw and a thick blade. The density of the blade should be higher than the density of the material being cut. But the whole problem is that dense materials They crack and break very quickly. Therefore, bimetallic blades are used for cutting metal. Thanks to their strength and elasticity, they easily cope with the task and do not break after the first use.

Jigsaw file for working with tiles

A file for tiles or tiles looks very recognizable. It is simply impossible to confuse it with other paintings. The fact is that this file is completely devoid of teeth. Instead of the usual teeth, the blade has tungsten carbide coating, which cuts tiles and other stone surfaces well.

Shape cutting files

Jigsaw files for figure cutting are easily recognized by the presence of small teeth. Such canvases are specially produced very narrow. This is done so that the canvas can easily pass through any turns without getting caught in the wood. Jigsaw files for shaped wood cutting can be recognized not only by external signs, but also according to the applied markings. On such canvases, the markings always begin with the letter “O”.

Manufacturers of jigsaw blades

When choosing a file, you need to pay attention to a number of indicators, while the manufacturing company has great value. On store shelves there is a huge number of products from Russian, Chinese and European manufacturers. With this large selection, sometimes the question arises of how to choose a file for an electric jigsaw. The most attractive in terms of cost are canvases from Chinese manufacturers. The cost of such files is almost two times lower than that of European manufacturers. This is all very attractive, but there is one problem. Canvases from China are no different good quality. They constantly wear down, overheat and burst. Therefore, it will be cheaper to purchase a high-quality canvas once and use it for a long time.

Jigsaw equipment

The majority of manufacturers are constantly working to improve their tools and develop additional equipment for their devices. Among these additions, we can note a system that helps to avoid chipping on the upper surface of the material. This issue is especially relevant when cutting materials with a decorative surface (laminate, parquet, facing boards). A circular cutter and a rip fence are also considered a very useful addition. Thanks to the rip fence, you can special effort cut an unlimited number of one-size slats. A circular cutter allows you to cut a perfect circle of varying radii. Having such devices in your arsenal, you can carry out a wider range of work and at the same time significantly save time.

Installing a blade into a jigsaw

The file is installed in a special slot and securely secured with clamps. There are a huge number of jigsaws on the market, while some manufacturers introduce individual features into the fastening mechanism. But in most cases, the installation of the canvas occurs according to the standard scheme.

1. The jigsaw is equipped with a special lever, which in one motion loosens the clamps and allows you to remove the blade without any problems.
2. After the clamps are loosened, you need to take a file and insert its tail into a special hole.
3. Now I'm left The final stage, which includes the adjusting screw clamp.
4. After everything is installed, you need to make sure that the canvas is installed securely and evenly.
5. Let's get to work.

Types of tails

Cross-shaped ponytail or there is another name for T-shaped ponytail. This name was obtained due to its visual resemblance to the letter “T”. There are a wide variety of blades with this type of tail, ranging from wood blades to tile files. The U-shaped ponytail also got its name due to its corresponding shape. Very rare view blades that only fit American instruments. In addition, there are conical and immersed tails, but there is practically no point in considering them, since in Russia the predominant part of the market is occupied by canvases with a “T” shaped tail. The remaining models are practically not used, since there is no suitable tool. Any type of tail is securely attached to a suitable electric jigsaw. Therefore, the difference is purely in form.

Using an electric jigsaw, curved and straight cuts are made when processing different materials- from wood to glass and steel. The tool itself is universal, but this does not apply to jigsaw files. For each individual task you need certain canvas. In order not to make a mistake in choosing this element, you need to know how the canvases differ from each other.

Classification Features

Nowadays, high demands are placed on the instrument. Speed, productivity, evenness and accuracy of the cut are important. All jigsaw files can be divided into several groups according to the following criteria:

• canvas width;
• shank type;
• workpiece material;
• shape and pitch of teeth;
• thickness of the canvas.

Now in more detail about this.

Shank type

Shanks vary according to the type of fastening. There are different options:

• T-shaped or “Boshevsky”. It was Bosch that came up with the idea of ​​its creation. Since the company is a leader in its field, other manufacturers have also started producing jigsaws with T-shanks, and these models are now flooding the market.
• U-shaped. It occurs less frequently than the previous one, but is also common - the second most common. American version, suitable for older types of jigsaws. Compatible with models with block and screw terminals.

There are also Makita and Bosch shanks. These are already outdated samples that are suitable only for old-style instruments from “their own” manufacturer.

Processing material

The material of manufacture can be called the main classification feature that most accurately separates jigsaw files . Allows you to describe in detail the operating features of the canvases:

There are universal blades that can handle both wood and metal with equal success, since the saw has large teeth on one side and small teeth on the other. This blade will not provide shaped processing and flawless cutting. If the material contains abrasive particles, as in gypsum or cement, the blades become dull very quickly.

Here we need products with carbide tipped on the cutting part. Cardboard or rubber is cut with “toothless” saws that resemble knives. The cut is made using a wave and grinding.

Difference in tooth shape

In addition to the material, the files differ in the shape of the tooth.. The possibility of use also depends on this. The teeth are as follows:

By width, thickness and pitch of teeth

The width is selected taking into account the requirements for the work results. Wide products are more stable, so they can be cut at high speed without deviations. If you need a high-quality sawn curve, narrower files that are easy to make turns are also suitable. The teeth should be located on the drive axis - this makes the tool more controllable.

The thickness determines how strong the deviation of the file from the vertical will be. Thick canvases the best way provide a perpendicular, even cut, but are unlikely to be suitable for jigsaws with a quick-release mechanism.

The pitch of the teeth is the distance between their tips. Most countries use the designation TPI (“teeth per inch”). Measured by the number of teeth per inch of length. If the TPI is 5, for example, that means there are five teeth per inch of blade. For cross-cutting wood, it is more advisable to use a saw with TPI 7−4. For regular work, 7-9 is enough. A file with TPI13−10 will help you make an extremely accurate cut.

It is necessary to take into account the thickness of the workpiece - 6-8 teeth must work simultaneously, otherwise the blade will vibrate and the cut will come out torn.

Especially for those who are just learning the basics of carpentry, it will be very useful to familiarize yourself with the markings of saws. After all appearance the canvas does not always give an idea of ​​its purpose.

Most manufacturers label products using the Bosch system. The marking is done on the shank and includes letters and numbers.

The first letter indicates the type of shank:

• U-shaped;
• T-shape;
• Fein standard;
• M - for Makita jigsaws.

After that there is a number indicating the length:

1 - no more than 75 mm;

2 - 75−90 mm;

3 - 90−150 mm;

• A - small;
• B - average;
• C or D - large.

The last letter gives important additional information:

• P - precise cut;
• F - working part made of bimetallic alloy of special strength;
• O - narrow back;
• X - progressive tooth pitch;
• R - reverse direction of teeth.

The color of the shank will also say a lot:

• Gray - for wood processing.
• Blue - for metal.
• Red is for plastic.

The steel of the blade is represented by a combination of letters on the neck:

• CV - chrome vanadium steel;
• HM- hard alloys;
• HSS - high-speed steel;
• BM (BiM) - CV and HSS connection (strong and durable);
• HCS (CV) - high carbon steel.

Often the file has letter designations that directly indicate its purpose. If you have basic knowledge of the English language, deciphering these letter combinations will not be difficult. We are talking about the following:

With knowledge of the specifics of the product, you will choose the most suitable file that will last a long time and accurately complete the task. If you need a jigsaw a couple of times a year, it is better to purchase a universal model for rough work, and entrust the precise cutting to the masters.

An electric jigsaw is a device for regular practical application every woodworker, and the development and improvement of technology has expanded the scope of its practical use. Now the device can be successfully used when working with other materials, the only thing that should be taken into account is right choice saw blade. Jigsaw files are classified according to several of the most significant characteristics, which allows you to initially select the right attachment depending on the features and type of cutting. Let's try to figure out how to choose the right file for your jigsaw, and what types there are.

The demands placed on the instrument are currently very high. Productivity, speed of work, accuracy of the cut, and its evenness are important. IN general view All classification options for blades suitable for a jigsaw can be combined into several groups according to the following criteria:

• shank type;
• material used in the processing process;
• options for the shape of saw teeth;
• canvas width;
• tooth pitch;
• thickness of the canvas.

Types of files

By shank type

T-shaped version. This shank is called “Bosch”, since it was the Bosch company that came up with the idea of ​​its creation. Focusing on the leader in this field, other manufacturers began to produce jigsaws with the same shanks, which is why they are now ubiquitous.

U-shaped shank. The next most frequently used is the American version, which is suitable for older types of jigsaws. Also compatible with models with screw and block terminals.

ShanksMakitaAndBosch. Rare representatives of their species, suitable only for jigsaws of the same manufacturer, and of the old type.

By material

Perhaps this is the main classification feature that most accurately separates all variants of jigsaw files and allows a detailed description of their types and features of operation.

For metal. Such saw blades are most often made of special high-speed steel; the cutting segments themselves are small and depend on the degree of hardness of the metal - the harder it is, the smaller the tooth. In general, to tell the truth, a jigsaw is not very suitable for metal - the cutting process usually becomes lengthy. The selected file option can be suitable for either aluminum, steel, or non-ferrous metals.

On wood. Since the creation of the jigsaw, wood has been the only material option in its field of application, and it is still its classic purpose. These files are made from chrome vanadium or high carbon steel. At the same time, for rough cutting, where it is not so much accuracy and precision that is important, but speed, wide blades and large teeth are used.

For clean processing of chipboard and fiberboard panels, accuracy is required rather than increased productivity, so the file for these purposes has teeth up to 3 mm and a small set.

There are also special options with double row of teeth, allowing you to cut laminated panels as accurately as possible. For figured processing, narrow versions of blades with fine teeth and a slightly beveled back part are used.

For laminate. The peculiarity of this blade is the presence of so-called reverse teeth, which prevent the occurrence of chips on the front part when sawing. This saw has a small tooth.

For ceramic tiles. Such models are equipped with carbide coating on the edges. This attachment is convenient for cutting and even carving into shapes. However, it should be taken into account that with a jigsaw you can only cut wall tiles; for floor tiles you need a grinder or a tile cutter.

Universal. They cope equally well with both wood and metal due to the fact that the teeth on one side of the saw are small and the teeth on the other are large. For curly treatments and such a blade will not be suitable for absolutely flawless cutting.

Special. They are divided into groups of products intended for different materials. For ceramic tiles, as described earlier, options made from the most durable alloys with special coating are suitable. When choosing a jigsaw for such purposes, keep in mind that the advisability of using it is only in cases of necessary shaped cutting; for straight edges, there are other, more suitable options.

If the material contains abrasive particles, as is the case with gypsum or cement, the files become dull very quickly. You should choose special blades with hard alloy soldering on the cutting part.

For soft “shapes” such as cardboard or rubber, choose "toothless" saws, which rather resemble knives. The edge is cut using a wave and grinding.

According to the shape of the teeth

With set milled. In these types of files, the teeth are bent in different sides one by one. In this case, the width of the wiring is considered normal to be equal to 1.5th the thickness of the canvas itself. Thanks to the wiring, strong heating does not occur, and sawdust is removed simply and easily. Used for quick cutting of not too hard wood, as well as plastic structures and non-ferrous metals.

With wavy milled. The setting is carried out in groups of teeth that deviate alternately to the left and to the right. The magnitude of the deviation of each subsequent one differs from the angle of inclination of the previous one, thus forming a wave. These saws are used for clean cutting of plastic and aluminum products and non-ferrous metal materials.

With ground teeth, conical grinding. It is used exclusively for finishing cuts when processing wood and plastic, as well as laminate and polymer materials.

With divorced polished. Used for rapid cutting with rough cuts of soft wood species, chipboards and fiberboard.

According to the width of the canvas

This file parameter is selected taking into account the specific requirements for specific work results. Wide blades are more stable, so nothing gets in the way of sawing at high speed without fear of deviations. If you need to cut out a curve with high quality, then more suitable narrow options, with their help you can easily negotiate turns. In this case, it is necessary that the teeth themselves are located directly on the drive axis - this gives the tool controllability.

By tooth pitch

The step is the length of the trajectory between the vertices. Most countries have adopted the pitch designation TPI from the English “teeth per inch”, measured by the number of teeth per inch. That is, if, for example, the TPI value is 5, then this means that there are 5 teeth in one inch of blade.

If wood needs to be sawn crosswise, then it is advisable to use saws with a TPI of 7-4, when ordinary work 9-7 is enough, if you need extremely precise and accurate cutting - 13-10. It is also necessary to take into account thickness of the starting material, 6-8 teeth must be involved in the work, otherwise the blade will begin to vibrate and the cut will turn out torn.

According to the thickness of the canvas

The thickness of the file determines how far it will deviate from vertical installation. From this point of view, thick saw blades best provide an even, perpendicular cut. However, they almost certainly will not fit jigsaws that have a quick-release mechanism.

Marking jigsaw files is especially useful for those who are not yet experienced enough in carpentry and cannot indicate the purpose of the attachment based on its appearance.

Most manufacturers tend to label their products using the system invented by Bosch.

So, the marking is affixed on the tail and contains a combination of letters and numbers.

The first letter in the combination indicates the type of shank:

• T-shape,
• U-shaped,
• M - for Makita jigsaws,
• Fein standard.

• 1 - the shortest length, does not exceed 75 mm,
• 2 - average 75-90,
• 3 - long 90-150,
• 7 – the longest files with a length of over 150 mm.

The next letter indicates the size of the teeth:

• A – fine teeth,
• B – average,
• C or D – large.

The last letter indicates some additional important information:

• F - working part made of particularly strong bimetallic alloy,
• P - precise cut,
• O - narrow back,
• X - progressive tooth pitch,
• R - reverse (reverse) direction of the teeth.

The color of the shank can also say a lot. Gray indicates that the saw is intended for wood materials, blue for metal, and red for plastic structures.

The type of steel used as the basis for the blade during production is indicated by a special combination of letters on the neck:

• HM – hard alloys,
• CV – chrome vanadium steel,
• HSS – high-speed steel,
• HCS (CV) – high carbon steel,
• BM (BiM) - CV and HSS connection, very strong and durable.

Often marked on the file letter designations, directly reflecting the essence of its purpose. For those who are at least a little familiar with English language, deciphering these letter combinations will not be difficult.

• "Wood" indicates working with soft wood and other soft materials.
• "Hardwood" - solid wood, PVC panels.
• “Inox” – works with stainless steel.
• "Metal" - metal.
• "Alu" - aluminum.
• Fiber, Plaster - fiberglass.
• Soft-material - rubber, carpet.
• Acrylic - polycarbonate.

Conclusion

Now you are familiar with the main types of blades, and you can easily answer the question of how to choose the right file for your jigsaw. Taking into account the specific design of each product, you can truly choose suitable option a file that will last a long time and will not spoil your original idea. For those who frequently practice carpentry, it makes sense to acquire various options files and use them strictly for their intended purpose. If you take out a jigsaw a couple of times a year, then it is better to have universal models on hand for urgent and rough work, and neat and figure cutting entrust to professionals. Happy shopping to you!

For those who have in their household jigsaw, from time to time you should buy files for it. There are quite a lot of varieties and manufacturers. The most common types of files are, of course, for wood; in addition to them, there are blades for metal and tiles. In order not to get too confused in the choice, let’s look at the most popular files in everyday life, from Bosch. In terms of price/quality ratio – a good choice. The letter “T” in the marking indicates the type of shank - T-shaped. The most common type of files.

Wood files. There are several types, it all depends on the nature of the work being carried out.

For example, if you need to quickly saw a bunch of boards, then a saw with a large tooth is best. The larger the tooth, the faster the cut will be, but the less accurate, the cut is not very smooth, but if you are making a fence or building a shed, then in principle, accuracy is not needed.
For these purposes, you can take a file marked T101D. It is suitable for boards up to 75mm thick.
If the board or block is up to 100mm, you will need a 244D file.
For boards up to 200mm - long file 344D.
It can be seen that the larger the number in the marking, the thicker the board the file is intended for.
It is necessary to take into account that for a thick board you will need.

For a clean cut, you will need a file, for example, T101B.

File for clean cutting T101B

Her tooth is noticeably smaller, which means the cut is smoother. This is suitable for assembling furniture, where you need an accurate and even cut, without chips.
It is often used for cutting fiberboard, plywood, and chipboard.
It can also cut thick boards, of course (up to 75mm), but it will take longer than saws with large teeth.

Laminate file.
It has a reverse tooth, directed in the opposite direction compared to other files. This is done to prevent chipping from front side laminate, do not spoil the appearance. Fine tooth – for a clean cut. It is marked T101BR.

The letter “R” means reverse (reverse). And this is no different from the simple T101B made of wood.

Shape cutting files.

Their teeth are always small, they are used for cutting out radii, circles, and are used in furniture production. They are noticeably narrower in shape than all the others, this is done so that the file does not get pinched when turning the jigsaw.
From personal experience I can say that I cut a circle in a fiberboard slab for a sink, and the cut turned out to be very accurate and even.
The marking for such files with the letter “O” in the name is T119BO.

They always have small teeth, to make them easier to recognize, their shank is blue. If you are sawing metal up to 3mm, a T118A file is suitable; it can also cut plastic, for metal up to 6mm - T123X, for aluminum - T227D, it has a larger tooth.

Combined file.

With this you can cut both wood and metal. Her tooth is small on one half of the canvas, large on the other. Marking T345XF.

Ceramic tile file. It is marked T150RIFF, T130RIFF. It has carbide coating along the edge.

With carbide coating

Most often, the files are clamped into the jigsaw using a 3mm hex key; sometimes there is a quick-release mechanism.

As for prices: the most popular saws cost about 25-40 rubles, long ones for thick boards cost about 80 rubles. The ceramic file stands out from the general range; its price is 150-170 rubles. Prices are current for 2012.

1. Main selection criteria
2. Tooth shape
3. Different pitch
4. Nozzle thickness
5. Mounting form
6. Marking features
7. Manufacturer brands
8. Other tips for choosing

Using an electric jigsaw, you can process solid wood, plywood, chipboard, chipboard, cut out various shapes, trim parts, adjust their sizes to the desired parameters. The tool is universal and has different saw blades. There is a standard set of attachments.

Main selection criteria

You need to pay attention to:

• Nozzle performance.
• Cutting accuracy.
• Cut line quality.
• The structure of the processed material.
• The shape of the teeth, the pitch with which they are located on the base.
• The width of the canvas, its thickness.
• The material from which the jigsaw file is made.

Each type of base has different strength resistance to the canvas. Thus, a laminate saw cannot be used to work with solid wood. There are blades for stainless steel, ceramics, hardened cement, and fibrous materials. Nozzles must be used strictly for their intended purpose..

Tooth shape

Highlight:

• Milled set. The teeth are bent in different directions. This prevents excessive heating of the blade during operation and allows you to remove sawdust trapped between the walls of the cut. Suitable for plywood, hard and soft wood, plastic, non-ferrous metals.
• Wave-shaped milled. The cutting base is laid out in groups. Several teeth deviate at once, first to the left, then to the right. This allows you to get a clean, chip-free cut and make a straight line. Suitable for materials made of aluminum, plastic, non-ferrous metals.
• Conical ground teeth. Used to produce clean cuts of wood and plastic.
• Set apart, polished. Used for cutting soft wood, chipboard, chipboard, fiberboard.

Jigsaw files
Working tooth length	Part size (step)	Divorce	Usage	What it looks like (click to enlarge)
75 mm	8 w/d (3 mm)	Side	Soft hard rocks up to 60 mm thick. Especially for rip sawing. Rough cut.
75 mm	6 w/d (4 mm)	Undercut and side	Same as the previous one, but drank clean
67 mm	6 w/d (4 mm)	Undercut	Hard and soft species, artificial wood materials up to 60 mm thick. Very clean cut.
50 mm	12 w/d (2 mm)	wavy	Artificial wood materials up to 30 mm thick. Very thin cut.
50 mm	12 w/d (2 mm)	wavy	For cutting sharp curves in wood and artificial wood materials up to 20 mm thick.
75 mm	10 w/d (2.5 mm)	Undercut	Reverse tooth for sawing on the down stroke. For plastic-coated boards.
60 mm	6 w/d (4.5 mm)	--	The tips of the teeth are coated with tungsten carbide, especially good results when working with chipboards with a high content of adhesive mass.
70 mm	--	--	Semicircular flat and triangular files. For wood and artificial wood materials.

When purchasing, you need to pay attention to the height of the teeth. Small ones provide precise sawing, but work with the blade will be slow. Large ones will allow you to work quickly, but the cutting line will be rough.

Different pitch

When choosing a part, you need to take into account the pitch - the distance between the tops of the teeth. It has letter designation t. There is a table compiled as general recommendation to the choice of saw blade. Its basis is a formula indicating the number of teeth per inch of blade. If the marking indicates TPI 7, it means there are 7 teeth per inch.

• If it is necessary to make a longitudinal straight cut on a wooden base, it is better to choose a nozzle with the following parameters: t=3.5–6.5 mm, TPI 7.
• For general carpentry work, bits with medium sharp protrusions, t=3 mm, TPI 9 are suitable.
• For figured cutting - with small sharp protrusions, t=2 mm, TPI 9–13.

In order for the tool to vibrate less in your hands when working, it is better to choose blades that contain at least 5–8 sharp protrusions in one step.

What should be the width of the nozzle?

The greater the width, the more stable the nozzle in operation, the less deviations from the cutting cavity. For curly lines, it is worth choosing narrower canvases. If the teeth are on the drive axis, the tool will be easier to control.

Nozzle thickness

For cutting a strictly perpendicular line on a thick wooden base nozzles must be used large thickness. How thinner material, the thinner the canvas should be.

Mounting form

Shanks can be with one stop and a T-shaped fastening, two stops and a U-shaped fastening.

Marking features

Nozzle types:

• For cutting any wood. With a gray tail (marking is applied to it).
• For wood and metal. With a white tail.
• For metal. With a blue tail.
• For plastic tiles, cardboard. With a black tail.

From the markings you can find out what metal the part is made of. The abbreviation HCS means that the blade is made of high carbon steel. HSS - made of high-speed steel. BIM - made of bimetal. HM - made of hard alloy.

For cutting plywood, soft-fiber wood, chipboard, chipboard with a thickness of no more than 30 mm, and plastic, it is better to choose HCS blades. The teeth of such files have a pointed shape and are conically ground. High flexibility prevents the possibility of breakage. HSS files are designed for cutting metals. They have a curvature at the bottom, which is necessary to prevent the metal from scuffing. These bits are thinner than wood cutting blades, but they are harder.

Bimetal tips are durable. They are made by laser welding. The basis is high-carbon steel. The back part is formed from it, the teeth are made of high-speed steel. The attachment is suitable for cutting curves and straight lines. NM blades are designed for sawing lightweight concrete, fiberglass, and tiles.

For laminate and veneered boards, a blade with a reverse tooth system is used. The cut occurs in the opposite direction, towards itself. This move allows you to process parts of different lengths, obtain a clean line, without chips.

Manufacturer brands

Manufacturer only trademark BOSCH produces a wide range of attachments. Market share - about 90%. Electric jigsaws HITACHI, MAKITA and others also include many different saw blades, but the parts are made by third party manufacturers.

It is important to consider the power of the tool and the ease of mounting the blade in the holder. Professional jigsaws are sold in cases. The kits contain additional accessories.