How to choose a disc for circular

Disc thickness and soldering options

The thickness of the slice itself directly depends on this parameter. However, products that are too thick can cause overheating. The most common size is 3.2 mm.

choose, disc, circular

Teeth inclination

Most circular saw blades for wood are made with a positive inclination, which increases the quality of the longitudinal cut. With a negative tilt angle, the radius of the tooth will be directed towards the back of the disc. However, longitudinal types of cuts are most often performed by products with a positive deviation of the tooth from the radius, since such a configuration provides a more reliable grip of the raw material. Slope classification is based on the following principle:

  • an angle of 5 to 15 degrees is considered the standard incisor arrangement;
  • the positive slope is within 15–20 degrees;
  • negative. from 0 to 5 degrees.

Based on these values, it will be easier to find the consumable for the job.

Features of the

With just one purchase of a powerful circular saw, the issue of using the tool for household and professional purposes does not end, since the device will need good consumables to complete the tasks. This applies to discs that will help to perform high-quality cutting or sawing wood and wood-containing materials. One circle for operating a circular saw will not be enough, since each type of cutting element has a specific function. Wood is considered a fairly popular raw material, which is used in many repair, industrial and construction works, therefore circular saw blades for wood can be used for different types of wood.

A distinctive feature of cut-off discs is also considered the ability to cope with cutting polymers, plexiglass and soft metals.

Circular saw blades differ in their performance, resource characteristics, as well as in the allowable number of regrinds. In addition, the discs can have different inner and outer diameters, as well as a different number and configuration of teeth. Maintenance of disks, as a rule, is carried out in specialized workshops; under normal conditions, these manipulations will be ineffective. It is worth noting that even the most durable saw wheel can be damaged if the tool is used for other purposes, therefore, during operation, work should be done only with the recommended type of raw material, in addition, thoroughly approach the issue of the intensity of use.

Number of teeth

Too many teeth will put additional stress on the motor and may also slow the cutting speed. If you use consumables with fewer teeth on the surface, it will be easier to remove chips from the working material, but the cleanliness of the cut will be imperfect. Based on this parameter, disks can be of the following types:

  • discs with incisors, the number of which will be in the range of 80–90 pieces;
  • products with average values, where the number of teeth will be in the range from 40 to 80 pieces;
  • cutting discs with a minimum number of cutters ranging from 1 to 40 pieces.

Products with average values ​​belong to the universal class, therefore they can be used for processing different types of wood and wood-containing materials.

The size

In this case, you must first familiarize yourself with the instructions for the tool. Saw manufacturers indicate this information in the characteristics that a particular device has. As for the outer diameter, its choice is based on the dimensions of the protective casing in the circular saw, therefore, a cutting wheel with a large outer diameter cannot be put on a device with smaller dimensions in the mechanism. The most common disc sizes are in the range 120–250 mm. This criterion is not responsible for the intensity of the cut, but is of great importance for the depth of cut.

And the inner diameter influences the power shaft of the tool. It can be of the following sizes. 16 mm, 20 mm, 22 mm, 30 mm, 32 mm. The size of the blade must match the size of the shaft in the saw. In modern models of equipment for fixing circles, there are special holes that allow you to fix the part with pins.

Disc cutters

Such a working part belongs to the types of cutting elements that are used to work with circular saws.

The main functions of the cutters are as follows:

  • division of materials;
  • processing of protrusions;
  • creating a thread;
  • grooving.

In addition, the part can be operated on both straight and curved planes.

For circular saws for wood, the following types of cutting blades are used:

  • double-sided;
  • groove;
  • tripartite;
  • adjustable;
  • slotted.

Each type of part has its own purpose, which determines its configuration.

How to Select Table Saw Blades: Woodworking for Beginners #2. Woodworkweb


Such circles stand out for their strength, so they are very often used not only for working with wood, but also with harder raw materials. And also this type stands out for its long service life, in comparison with monolithic products. A distinctive advantage that determines a high degree of wear resistance is the presence of cobalt and tungsten solders on cutters of different configurations. Such discs also become unusable, but the principle of the design of the elements does not allow restoring the discs after operation. In addition, carbide wheels stand out for their high cost.

Choosing circular saw blades for wood

  • Features of the
  • Characteristics
  • The size
  • Number of teeth
  • Teeth inclination
  • Disc thickness and soldering options
  • Design features of the cutters on the disc
  • Circular saw blade marking
  • Raw material type
  • Views
  • Monolithic
  • Carbide
  • Disc cutters
  • Which one is better to choose?

Today, in the arsenal of home craftsmen and professional workers in construction and repair specialties, there are a large number of different tools for working with wood. This list contains a circular saw. a tool with which you can perform many different tasks. However, the fundamental question before starting operation is the choice of the cutting blade for the device.

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For metal

This model is used to work with metal, including pipes, profiles, fittings, and so on. Differ in the type of material they will process.

If a blade is used in a saw design without liquid cooling, then there will be slots in its body, which will compensate for the discharge temperature.

Stone disc

Models used when working with bricks, tiles, granite and other hard materials. The cutting edge of such products often has diamond soldering, which allows you to quickly cope with any material of any density.

When a saw is working with such a tool, it is imperative to take breaks so that the nozzle cools down. Wet saw blades have no teeth and are soldered all over the edge.

Wet saw blade, for marble

The diamond layer can be up to 5.5 millimeters in height. Such rigs are used in the professional field for long-term operation. Cooling takes place due to the supplied liquid.

On plastic

Such equipment is used when working on plastic, fiberglass or metal-plastic. The teeth on such products have a negative sharpening angle, so you can make a neat cut even on a small-sized part. Some rigs of this type are used as a disc on laminate, chipboard or fiberboard.

Saw blade for plastic, laminate, aluminum

During work, sharp equipment must be used. A damaged or already blunt tool becomes the cause of jamming in the product, and, accordingly, the motor is blocked.

The maximum use for the saw should not be allowed to be exceeded, this applies to a greater extent to the rotation speed. In order for the equipment to last longer, you need to constantly clean it from the remnants of the sawn material.

How to choose

Not everyone knows how to choose a product so that it copes with the task with a high quality.

In order to choose the right disk for a circular, it is important to know the basic parameters that will need to be guided in the process of work.

Among the main parameters, we highlight:

  • Disc diameter. It can range from 13 to 50 centimeters. The larger the diameter, the larger the workpiece can be machined by the tool.
  • Landing diameter. This size is always indicated in millimeters and the product is selected according to it in accordance with the size of the saw. Among the most demanded tools for wood, sizes with an indicator of 16, 20 and 22 millimeters, for an angle grinder 22.2 millimeters, and for end equipment 20, 22, 24 and 30 millimeters.
  • The number of segments. It can vary from 10 to 150 pieces. The accuracy of the cut will depend on the number of teeth, the more there are, the better it is.

It is worth paying attention to the thickness of the tooling, especially if it is supposed to work with dense material. For products with a greater thickness, the cutting ability lasts longer. If it is necessary for the tooling to eat less material from the product, then it is necessary to choose a thin disc.

What you need to know when choosing miter saws

It is better to take on the market products from well-known manufacturers who have already established themselves as consumers. Such equipment will not let you down, but their only drawback is their cost.

Classification of circulars

All circular saws on the market can be divided according to their purpose.

Among them:

  • Models used for cutting metal. (Also used in miter saws);
  • Used for cross-cutting wood;
  • Circular saws for timber rip;
  • Models used for cutting panel materials, including laminate.

Any circular saw can belong to models of different cutting depths.

Among the huge assortment offered by manufacturers, four types stand out:

  • Small saws with a cutting depth of 4 to 4.6 centimeters;
  • Average cutting depth with a distance of 5-5.5 centimeters;
  • Large cutting depth from 6.5 to 7 centimeters;
  • Professional-grade saws with a cutting depth of 6.5-14 centimeters.

How to choose a Circular Saw Blade

Circular saw blades: the right choice and application

  • Classification of circulars
  • Scope of use and basic parameters
  • How to make a circular saw blade?
  • What circular saw blades are?
  • Stone disc
  • Circular saw blade
  • For metal
  • On plastic
  • How to choose
  • How to remove a snap

Circular saws are a hand-held tool that can be used to make cross and longitudinal cuts in various materials. The main structural element of such a tool is a metal disc with cutting teeth at the edges.

Circular saw blade

This type of product is used when working with lumber or solid wood. They, in turn, also differ, but according to the operations that perform.

Disc for wood, for circular saw

There are discs of this type for fast cutting of wood. They differ from others in a small number of teeth, which gives a rough cut. There are also products on the market for a clean cut, on the edges of which there are many small teeth and for ripping with large teeth.

If the cut is supposed to be made across the workpiece, then use a disc with fine teeth. There are also universal products, on the edges of which there are both small and large teeth. With their help, you can do any woodwork without changing the tool.

How to make a circular saw blade?

A saw blade is a circular saw attachment that is used to cut workpieces from different materials.

The main material for manufacturing is chrome vanadium steel or high speed steel. Molybdenum and tungsten are added to the metal of the tool, which give the necessary strength. Such discs are marked CV or HSS.

Cut-off for metal

Such a metal is not brittle, but there are also more hard-alloy materials on which the vehicle is marked. The design of such discs consists of more than half of chrome vanadium steel, the teeth are made of tungsten carbide.

In the process of manufacturing parts, they are soldered onto the main part of the disk. This circular disc will last ten times longer than a regular steel disc.

There are circular saw blades with diamond segments that are laser welded to the main body.

Such products are distinguished by their high strength and the ability to use them for cutting durable materials, for example, concrete or natural stone.

Circular discs are made of different thicknesses, from 0.7 to 2.8 millimeters, it all depends on how thick the cut will need to be done.

Different tool models differ in shape, length, angle of inclination and type of tooth setting.

The most commonly used types of teeth are:

  • Trapezoidal
  • Divorced
  • Multidirectional
  • Straight-sided profile

The load on the cutting part also depends on the position of the teeth, for example, for multidirectional ones, it is evenly distributed, and for divorced ones, the load is greater at the ends.

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Cutter configuration

It is determined by the type of material being processed, which can be seen in the photo of circular discs. There are incisors:

Flat. for fast cutting of any wood material in the longitudinal direction.

Replaceable with alternating tilt. It is used for even cutting of wood, plywood, chipboard in the longitudinal or transverse direction.

Combined. universal option for different types of cuts.

Trapezoidal flat type. a sequence of flat cutters with a trapezoidal sharpening for a high tooth and with a flat sharpening for a lower tooth. Wood or wood products, polymers and non-ferrous metals of a soft structure are processed.

Interchangeable with an increased slope. provides a finishing crosscutting, suitable for work with brittle material that quickly splits.

Outside diameter

This selection parameter is in direct proportion to the dimensions of the saw cover itself. If you take a disc with a large diameter, then it will not be possible to install it on a tool with a small diameter casing. Operating with discs that are too small is also fraught with consequences.

The outer dimension does not affect the cutting speed, but it determines the cutting depth. In hand tools, cutting components with a diameter of 130-250 mm are used.

With a large immersion of the blade into the surface of the material, the load on the engine increases. It is recommended that the teeth do not protrude above the working plane by more than 10-20 mm.


They are made of solid metal. So, the most commonly used high-carbon or high-speed steel. For finishing soft and hard wood, it is advisable to use sharp teeth, resembling a hacksaw. They are used in longitudinal and transverse machining.

There are modifications with curved teeth. Their external shape is round. They are used when sawing softwood.

The monolithic blade is equipped with a large number of teeth and allows several regrinding cycles. The cost is not too high. However, the teeth become dull quickly, and therefore require regular sharpening and setting.

Selection of circular saw blades

If you need to carry out work on cutting the material, then you should understand that the choice of the appropriate inventory should be determined by the size of the base unit.

The characteristics of the processed material are also important. There are no universal drives. Therefore, you should decide in advance which disk to choose.

Purpose of disks

Circular saw blades are indispensable in the process of sawing. Processing can be subjected to:

  • wood;
  • wood products such as plywood, chipboard, laminate, etc.;
  • polymer products, plexiglass, polystyrene;
  • natural stone;
  • soft metal. objects made of aluminum, copper;
  • items based on iron alloys, for example, pipes, corrugated board.

What discs exist

The main factor determining the choice of this inventory is the correct selection of the required types of disks.

Number of teeth

Saw blades can have a different number of teeth. Therefore, they are classified into several types:

  • with an increased presence of incisors. from 80 to 90 pieces;
  • the presence of an average quantity. from 40 to 80 pieces;
  • with a small volume. 10-40 pieces.

The parameter of speed and cleanliness of cutting depends on this parameter. If we take an analogue with a small number of teeth, then the speed will be higher, but the quality of processing is underestimated. A disc for a tree for a circular, in which there is an average number of cutters structurally, is considered universal.

How to choose a disc for circular

The need for sawing various materials may arise in everyday life, at a summer cottage, during construction work. The use of a circular saw greatly simplifies and speeds up this procedure. The most important structural element of the sawing unit is the discs used both in hand-held models and on stationary devices.

Brief content of the article:

  • Purpose of disks
  • What discs exist
  • Monolithic
  • Carbide
  • Selection of circular saw blades
  • Outside diameter
  • Landing diameter
  • Number of teeth
  • Inclination of incisors
  • Cutter configuration
  • Thickness
  • Photo of circular saw blades

Circular disc working principle

All electrical wood processing machines work on the same principle. The circular disc for wood is fixed on the axis of the motor, which gives it a powerful rotation. The tool is divided into several groups:

  • Manual.
  • Electrical.

These systems differ only in their design. Rotation of the disc in a hand-held apparatus is carried out mechanically. Electrical devices require an electric motor. To adjust the cutting depth, as well as adjust the desired angle of inclination, all systems have a special platform.

The industry produces original mini-saws equipped with a battery. Such a cutting machine for wood, the disk mechanism of which is not very powerful, can be operated in areas where there is no electricity supply.

Varieties of electric tools

A wood processing device belongs to complex systems that are:

  • Household. Low power allows you to cut a small amount of material.
  • Semi-professional. The mechanisms are more powerful. However, its value is much lower than professional systems.
  • Professional. These devices are capable of working for a long time in extreme conditions. Their versatility has found application in the construction industry.

Additional saw functions

In modern devices, disks are capable of performing a number of additional operations. The cut is neat and clean. These useful features include:

  • Dive anywhere. In other words, sawing can start not only from the end, but also from the middle of the workpiece.
  • You can connect a vacuum cleaner, no matter which model. It blows away sawdust and makes the work piece much better visible.
  • Launch lock. In order for the engine to start, two buttons must be pressed simultaneously. A sudden start of the motor is completely excluded. It is much safer to work with such a device.
  • Special laser pointer. The device replaces the guide rail.
  • Hinged protection covering the plane of the circle.

How to choose a cutting blade

To avoid problems with sawing wood, it is necessary to take into account the density of the material. For example, a tool with trapezoidal teeth can freely machine workpieces along the grain. A disc cutter is not suitable for such an operation.

When it comes to sawing very hard material, professionals advise using carbide-tipped saws. Of course, the cost of such a tool is slightly higher in comparison with conventional equipment, however, they can be used for quite a long time with great efficiency.

Important parameters of a circular saw are:

  • Diameter.
  • Thickness.
  • Number of teeth.

The most popular and versatile disc is considered to be 20 cm in diameter.

The number of teeth affects the quality of the cut and the speed of the operation. To get a clean cut, you need a large number of teeth. But the work will be much slower compared to a saw with fewer teeth.

How to choose a circular saw blade for wood

When sawing wood with a conventional saw, it takes a lot of effort to return it to its original position. After the circular saw, equipped with an electric motor, appeared, many problems were immediately solved. The circular saw blade has got one-way movement. As a result, the productivity of this technological operation has increased. To get higher efficiency, you need to choose the right circular saw for wood.

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The main characteristics of the equipment

When choosing the right pruning saw for your machine, there are a number of important factors to consider that affect the performance of your system. The main technological indicators are:

  • Electric motor power. To fit a large diameter saw blade, it is necessary to turn the motor as high as possible. The disadvantage of such devices is their weight. For example, a device with a 1200 W electric motor weighs about 4 kg. powerful 2000 W system weighs 7 kg.
  • Depth. To obtain a rip cut of a certain depth, it is very important to select the appropriate power.

There are several standard sizes of cutting depth:

  • Household. 40-45 mm.
  • Semi-professional. 50-55 mm.
  • Professional. 60-70 mm.
  • Industrial. 140 mm.

Disk rotation speed. This parameter is in direct proportion to the density of the workpiece being processed. The cut will turn out to be clean if the rotational speed is very high.

Tilt angle adjustment. Any model has this setting. Wood miter saw blade is mainly used for professional operations. It is rarely used by amateurs to work with wood.

Sharpening circular devices

When the tool becomes blunt, it is required to repair circular saws for wood, which is expressed in their sharpening. First, the back of the teeth is machined, then the front row is sharpened. The starting tooth is marked with a marker. The sharpening force must be the same for all teeth.

How to choose the right circular saw blade for wood. step by step instructions

We are constantly faced with the need for cutting (sawing) lumber and wood, characterized by a dense structure. This is the main reason why this electric / tool (aka trimming, circular, circular saw) is now purchased for domestic use along with a traditional electric drill, perforator or screwdriver.

A good owner always has such a “set” in the house. The main problem that causes some difficulty for people without sufficient experience in cutting wood is how to choose a blade for a circular saw. The range of such canvases is impressive, and this is due to the versatility of trimming. It can be used to cut almost anything. wood, ceramics, plastics, some metals and even concrete. Let’s figure out how to choose the right disk according to the tree.

Circular saws for wood are available in several modifications. hand tools and machine tools. The article is aimed at those who use trimming at home. Therefore, further emphasis on manual models, since explaining to a specialist the nuances of acquiring cutting blades is a meaningless exercise.

Disc thickness

You should pay attention to this, since the choice has a number of nuances. The standard value is 3.2.

  • A thicker blade is more difficult to work with circular, especially when cutting hard wood. The wrong choice of mode is fraught with quick breakdown. In addition, the amount of waste in the form of sawdust increases.
  • A thin blade gives a more accurate cut. But here, too, there is a drawback. the rapid heating of the metal. You don’t have to think about high performance, since the circular saw will have to be stopped often to cool the tool.

Disk selection criteria

All specified dimensions, tolerances. in mm.


Everything is clear here. it means external and internal (it is also called a footprint). The circular saw’s passport indicates the standard sizes of the discs that can be installed on this model. Therefore, the author does not consider it necessary to delve into this issue and consider the entire range of canvases, since each reader has his own circular saw.

But situations are different. Someone lost a document for a circular, someone got it by inheritance, a third bought it from his hands. How to proceed? There are two easy solutions.

  • Owners of imported circular saws, if there is no passport for the product, should do just that (purchase one-to-one). The fact is that on foreign-made models, discs are often installed with sizes that are not considered standard, generally accepted. For example, if for the majority of trims the “landing” diameters are 20 (the next one is already 30, 32), then for imported circular saws this parameter can be = 25.4. Here, when choosing a disk, it is not difficult to make a mistake.
  • Determining the diameters is also easy by marking. If it has not been erased, then the alternation of numbers is necessarily visible on the circular saw blade. For example, 250 x 24 x 36. What does this mean? The first position is D outside, the second is D inside.

Features of the disc teeth

Size. the larger it is, the faster the wood is cut. But there is no need to talk about the cleanliness of the cut, especially the transverse one. The edge is uneven, with fringes around the edges. Such blades are suitable for rough work when cutting accuracy does not matter. For example, when trimming a board or log.

  • In everyday life, you have to work with various samples of wood blanks. It is better if the owner has several discs at hand with different tooth sizes. But if the circular saw is used irregularly, then the best choice is the average value of this parameter. The number of cutters for such discs is from 45 to 75 (the third position in the marking). Perhaps, in some cases, the effectiveness will be insufficient, but they are the ones that are universal. They can be used to cut boards, plates, plywood. With a certain experience. and GCR.
  • A clean and precise cut, strictly along the mowing line, is ensured by a circular saw blade with fine teeth. The cutting speed will have to be reduced, but the quality will be at its best.


Discs are produced in 2 versions. monolithic and more expensive, with weld-on teeth. They are characterized by increased wear resistance and strength. They can be used to cut wood of any density (hardness) with a circular saw without risk of damage. The downside is that such discs cannot be sharpened, so they are immediately rejected.


The main recommendation is that it is advisable to purchase discs from the same manufacturer as the circular saw, that is, “native”. But this is not always possible, especially for those living in rural areas. What to choose if you focus not on cost, but on durability?