Useful information

In order to choose the right drive for on wood, you must adhere to certain rules. Before placing an order in a store, think about what kind of work you plan to do more often.

Monolithic discs quickly become dull and therefore require periodic sharpening with a set of teeth. Carbide tipped discs are more expensive but last longer. It is difficult to sharpen them, but they have a longer service life and excellent sawing quality. Today discs of this type are the most popular type of equipment.

Discs with fewer teeth are good for ripping. The angle of inclination of the cutting surfaces should be positive, and the depressions between them should be large, for effective removal of sawdust. For example, a disc with a diameter of 230-250 mm should in this case have from 18 to 24 teeth.

For a cross cut, the number of cutting elements should, on the contrary, be large - up to 48.

There are saw blades with protrusions behind the carbide brazing, the role of which is to limit the saw feed speed. Such discs provide a smooth and clean cut, and are protected from damage to the cutting edges by dropping knots.

Usually, manufacturers indicate all the necessary information on the disc packaging in the form of pictograms. Here you can specify the materials with which it is recommended to work with this equipment, the direction of cut (across or along), the maximum permissible revolutions and angles of inclination of the teeth. The value "7 neg" means 7 degrees of negative slope, and "5 pos" means five degrees of positive slope. Sometimes, for greater clarity, a schematic image of the saw for which it is intended is drawn on the saw blade - miter or circular.

The quality of a cutting disc for wood is easy to assess by its appearance. Pay attention to the direction of grinding the disc - if you have a representative of high-quality branded equipment - the traces from the grinding tool diverge radially in the direction from the bore. If these traces are not present, then you are holding a fake or "budget" option. Such discs are cut from a sheet of metal, which is previously ground, while high-quality saw accessories are ground and balanced individually, after stamping.

The shape of the teeth and the way the saw blade is sharpened is also important. The most common types of sharpening are flat, alternating slope and trapezoidal (straight tooth). For rough cuts, flat sharpening is used, for work on chipboard, plastic and soft metals - trapezoidal. The alternating edge bevel is considered versatile and is great for clean cross-cuts on plywood, hard or soft wood.

It is rare to find a craftsman who is not involved in sawing wood. Circular saws, circular saws, trimmers, angle cutters are present in garages and home workshops almost everywhere, which means that when you need saw blades for wood, it depends only on time. All blades differ among themselves in the material of manufacture, shape, size, tooth pitch and other important parameters, on which the quality of the cut largely depends.

Saw blades

Today manufacturers offer a fairly large range of equipment for wood processing. When buying it, you need to pay special attention to the selection of a cutting blade, because it depends on it what material you can work with.

Saw blades for wood for grinders and circular saws differ in their technical performance. Their teeth are inclined in the direction of movement, and the more there are on the part, the more accurate and accurate the cutting itself will be.

For a hand-held electric saw for cutting boards, fiberboard, you will need a knife with frequent teeth (about 100 pcs.). For cutting wood with many knots, reinforced discs with 24 cutting edges are selected.

The saw blade designation consists of 2 numbers. The first means their diameter, and the second characterizes the diameter of the landing rod. Discs that have a lower indicator than that provided by the saw cannot be installed on the equipment, since there will be a space between the part and the casing, into which a hand can accidentally fall.

How to choose the right disc

When purchasing saw blades for wood, you need to pay attention to the following parameters:

• for what types of work they will be used, what kind of wood will be cut;
• a series of discs, where the shape and size of the teeth are taken into account, are there any special plates;
• the design of the saw blade itself (tooth shape, slope, presence of plates, their shape, location, disc thickness);
• the outer diameter must be selected taking into account the rotational speed;
• the diameter of the bore, which depends on the type of tool;
• parameters of teeth (thickness, shape, number, etc.).

Disc characteristics

When choosing a circular saw and saw blades for wood, you should immediately decide which materials will be processed and for what work the tool is needed. There is a wide range of models on sale today. All of them are intended for specific jobs, therefore, special attention should be paid to their choice.

Dependence of the diameter of the discs on the rotational speed of the equipment

Saw blades for wood may vary in size.

• disc diameter up to 80 mm is used at a rotational speed of 23 800 rpm;
• up to 100 mm - at a rotational speed of 19 100 rpm;
• up to 120 mm - at 15,900 rpm;
• 250 mm - at a speed of 7 600 rpm;
• disc diameter 300 mm used at 6,300 rpm.

It should be remembered that the larger the blade diameter, the lower the saw speed will be. This must be taken into account when choosing equipment.

Cutting speed versus material

In this regard, there is the following pattern:

• for soft woods, it is recommended to use a speed of 50-90 m / s;
• cutting of hard rocks occurs at a speed of 50-80 m / s;
• cutting exotic wood species - at 50-85 m / s;
• for MDF panels the speed is 30-60 m / s;
• for laminated panels - 40-60 m / s;
• for simple carpentry and chipboard panels - 60-80 m / s.

When choosing a tool, it must be borne in mind that saw blades for wood have different sizes and shapes of teeth and can be used at several speeds.

It should be remembered that all tool manufacturers indicate the required parameters, so you can easily decide which equipment you need to choose to perform the planned work. In addition to revolutions, speed, thickness and other indicators, it should be borne in mind that circular saws can be not only hand-held, therefore, first of all, it is necessary to determine for which particular tool a particular disc is intended.

Why is it so important to choose the right saw blade?

In the question of how to choose a saw blade for wood for a clean cut, parameters such as the shape and size of the teeth must be taken into account. Manufacturers offer several models:

1. Carbide-tipped with special solders, which ensure cross cutting. The product can be used for solid wood. A saw blade is used on wood for a clean cut when cross-cutting wood fibers, chipboard boards, hard and soft wood species. The tooth of such models is trapezoidal and made of hard metals. Solid carbide discs with thicker scoring blades for faster working speeds. They are used for machines with automatic material feeding.
2. Special saw blades for wood with variable teeth, scoring knives, reduced thickness for cutting. Used only for rip cuts, they allow you to make a neat and thin cut. It is impossible to use such canvases when working with poplar. The shape of the tooth is variable, inclined by 10 °, the shape is straight. Such discs are used for single-shaft or double-shaft multi-saw machines, used for soft and hard wood, in which the moisture content is up to 15%.
3. Variable tooth blade that can be used for radial, pendulum cutting. It is used for hand tools. Provides high-quality cross-cutting of solid or hard, dried or damp wood. The tooth has a negative external angle, the slope of which is 15 °. A similar saw blade for wood, the price of which is from 114 rubles. - the best option for construction work on the site.

It is a versatile tool that can work with a wide variety of materials - from wood to plastic and sandwich panels. But in order for the cut to be even and without chipping, a well-chosen circular saw blade is required. Note that there is no universal disc suitable for all materials, since each product solves its own problems. In addition, you should not save money by buying products of an unknown brand - this is, in the first place, unsafe.

Types of saw blades

All saw blades are divided into two types:

1. Monolithic ones are made of solid metal and are distinguished by sharply sharpened teeth. They are popular due to their affordable price, the possibility of restoration, that is, re-sharpening. On the other hand, solid products wear out faster.
2. Carbide discs are for more reliable and durable, since they are equipped with sharp cobalt solders on the teeth or. Thanks to the use of carbide materials, the products are more durable and reliable, however, if the discs become dull, it will not be easy to restore them.

The shape of the teeth matters!

When choosing a saw blade, you should pay attention to the design features of the products, the location of the teeth, their shape:

• straight, identical teeth are suitable for cutting chipboard, wood, plywood or aluminum;
• alternating alternating teeth to cope with sawing wood of soft and hard texture or plywood, as well as when cross-cutting;
• circular saw blade with trapezoidal teeth can be used when working with chipboard, soft non-ferrous metals, plastic. Due to the special shape of the teeth, the material does not split, and the sawing itself is carried out in two stages - first, a rough cut is made, then the edges are trimmed;
• the teeth can have a positive or negative slope: the first is needed when cutting workpieces with thick walls, the second - with thin walls;
• with deep depressions between them provide a good longitudinal cut of the wood, while sawdust is easily removed;
• small, closely spaced teeth allow cross-cutting of materials. The most convenient among these types is a circular saw blade, each tooth of which has a special protrusion at the back. Due to this design, the cut is carried out quickly and evenly.

Before choosing one or another disk, you need to solve a few questions for yourself.

Are the technical data correct?

Each saw blade is matched to a specific type of circular saw. And therefore, when choosing, it is worth considering the power of its engine, and the speed of rotation of the spindle, and the diameter of the landing pin. A circular saw blade with a high RPM and teeth at a negative tilt angle will put a heavy load on the motor. Therefore, you should definitely find out what the capabilities of your saw are. It is worth remembering that each saw has a bore diameter, therefore, the disc must correspond to its dimensions. The choice of a saw blade assumes attention to such information as the series of the blade, its design and external size, bore diameter.

How will you cut?

A saw blade for a circular saw should be chosen taking into account the type of cut - it can be transverse or longitudinal. In addition, the materials that you plan to saw play an important role - wood, plastic, chipboard, non-ferrous metals, pipes ... Let's note one thing - each series of discs is designed specifically for certain types of work.

The blade quality directly affects the cutting efficiency. A good web is created by laser cutting, and balancing is done on a computer. Grinding of each disc is done separately. A high-quality canvas in the light will reflect the marks from the grinding tool. If the blade is rough and looks rough, such a circular saw blade will not work efficiently and will dull faster.

We take into account the diameter

Each saw has its own dimensions, and therefore the equipment for it must be selected taking into account this parameter. The diameter of the discs is important because different diameters will lead to losses. So, the cutting depth depends on the outer diameter. Experts say that the cutting depth above the workpiece should be minimal: in this case, the cut will be better, heating will decrease, and the load on the engine will be minimal. It is important that the disc is firmly seated on the dowel pin.

We count the teeth

Among the most popular tools in the DIY arsenal is the circular saw. A disc for metal for it should be selected taking into account the number of teeth, on which the speed and cleanliness of cutting depend. If there are a lot of teeth, then the cut will be fine, however, the load on the engine will increase, and the chips will be more difficult to carry out. With a small number of teeth, the cut is rough and rough, but the chips are easily removed, and the cut is faster. A large number of teeth is 80-90, a small number - 10-40.

How to sharpen?

Like any other tool, the saw needs timely maintenance. The most crucial moment is the sharpening of circular saw blades. Experts note that the carbide tooth wears out along the main top except, and if massive workpieces are sawn, then the side edges also quickly wear out. Excessive bluntness of the saw should not be allowed, since it will be less productive, and it is not a fact that it will be possible to sharpen the discs.

Correct sharpening requires at the same time ensuring the proper sharpness of the cutting edge. If you sharpen them along one front plane, then the number of sharpenings will be less. Many owners of such tools are interested in how to sharpen a circular saw blade. And this depends on the material of the teeth. Sharpening is most often performed on a CBN or green carbide wheel or on the basis of diamond wheels. Elborov wheels are advisable to use when sharpening saws from and diamond - for cutters from hard alloys. To sharpen quickly, but less affect the degree of wear, it is worth choosing with the greatest grain size.

For sharpening, you can also use machines that have different functionality. The most complex and expensive models are ways to provide automated sharpening. When sharpening, the teeth should be set apart: if this is done incorrectly, then during the cut there will be a burning smell, extraneous noise, and the material itself will move with jerks, which is not very convenient.

In general, the condition of the disks should be monitored constantly, since their wear will affect the increased load on the mechanisms and, sooner or later, will lead to its complete failure. Regular sharpening can extend the life of the equipment, improve productivity and reduce the time required for the cutting process itself. If, after sharpening, the cut remains sloppy and the material moves unevenly, then more attention should be paid to the position of the teeth.

conclusions

How to choose saw blades? This is easy to do if you follow a few rules:

1. Find out the bore and outside diameter of the blade on the label - these should match the specifications of your saw.
2. Pay attention to the thickness of the blade: thin ones provide a good and clean cut and are used when working with valuable species of wood, and thick ones are advisable to use for rough cutting of materials.
3. The disc should indicate what the maximum permissible number of revolutions is. A low speed will allow a high cutting speed to be developed, but will lead to deformation of the blade and a poor-quality saw.
4. Evaluate the quality of the saw blade: if it is good, then the cutting plane will be smooth, without roughness and flaws.

And most importantly - watch out for safety and choose which are designed for a specific type of saw. Also, think about where to sharpen the circular saw blade if you can't do it yourself.

Having decided to repair or build an object, the owner must take care of the availability of a special tool with which it will be possible to process wood in a short time and with high quality by creating an even cut. A circular saw for wood can cope with a similar task, when using which there are no difficulties.

However, it is important to remember that the range of saws on the market today is quite large, so you can quite easily choose the most suitable option and, using it in combination with two replaceable inexpensive discs, you can ensure high-quality wood processing. At the same time, it still deserves special attention. the process of choosing this tool, because in order to make the right decision, it is necessary to take into account the power of the saw, its technical characteristics, as well as the working conditions with the equipment.

The choice of saw blades should be approached with special care, since their type determines what materials they can be used for and how good the cut can be. The saw blades available to consumers today can be classified according to various parameters: material of manufacture, shape and size, tooth pitch, and other important characteristics that can also affect the quality of the cut. The range of saw blades offered by manufacturers includes many types of tools for wood processing. And in order not to make a mistake when choosing, it is important to take into account the type of material and the type of wood for the processing of which it is planned to use the discs.

In order to choose the right power tool for woodworking, it is important to consider such a parameter as type of cutting blade... It is important for the reason that it determines the type of material for which it can be used. When deciding on the diameter of the disc, you should pay attention to the rotational speed, maximum and minimum speed.

In order for the purchased saw blade to successfully cope with the tasks assigned to it, you need consider the following parameters:

• The type of work for which the canvas was purchased. Here it is necessary to pay attention to the type of wood that is planned to be processed.
• Saw blade series. The focus should be on the size, shape and availability of special plates.
• Saw blade device. Noteworthy parameters are the shape of the tooth, the slope, the presence of plates, as well as their shape, location, disc thickness.
• External diameter. When selecting it, attention is paid to the rotational speed of the tool.
• Bore diameter. This parameter is determined based on the type of tool.
• Characteristics of the teeth. This refers to the thickness, shape and quantity, as well as others.

Characteristics of discs for wood

Considering various models of circular saws and saw blades, it is necessary to decide for what material you plan to use them, what work you plan to do with their help. At the moment, a large number of various models of these devices are on sale. However, it should be remembered that the choice should be approached with the utmost seriousness.

Let's say the speed can be significantly affected type of raw material with which you plan to work. Cleanliness also determines the appropriate diameter of the web. In addition to them, other parameters are also gaining importance.

Working disc diameter

This characteristic can determine the optimal tool rotation frequency:

• with a diameter not exceeding 80 mm - rotation frequency 23 800 rpm;
• with a diameter of not more than 100 mm - the frequency is 19 100 rpm. ;
• with a diameter of 120 mm - frequency 15 900 rpm. ;
• with a diameter of 250 mm - frequency 7 600 rpm. ;
• with a diameter of 300 mm - the frequency is 6300 rpm.

As the size of the saw blade increases, the saw speed decreases. It is always necessary to remember about this feature when choosing a working tool and accessories for it.

Cutting speed

In addition, the material prepared for work will be influence the cutting speed:

When considering different saw blade models, it is necessary to take into account the shape of the saw teeth, as well as dimensions and operating speeds. For clarity, you can consider the following operating parameters:

1. If the manufacturer has laid down the following characteristics in the saw blades n = 1500 rpm, u = 10 meters per minute, z = 60, Sz = 0.11 mm, then they are suitable for sawing chipboard boards, as well as hard and soft wood. Material processing can be done across or along the grain.
2. If the manufacturer has defined the characteristics for the saw blade n = 3000 rpm, u = 5 meters per minute, z = 40, Sz = 0.04, then it can be used to process chipboard boards characterized by the presence of a polymer outer coating. They can also be used for cutting aluminum, laminated boards and various types of plywood.

An important point is that the saw blades necessarily contain the necessary parameters that must be maintained when using them. it simplifies the selection procedure, which can be used to perform a particular job. When comparing saw blades in terms of the number of revolutions, thickness, speed and other parameters, it is important to keep in mind that you can find different types of saws on sale. For this reason, it is important to understand which tool a particular saw blade is designed for.

Why is it important to choose the right discs?

In order not to make mistakes when choosing a saw blade for wood, it is important to consider the shape of the saw teeth as well as their dimensions. At the moment, on sale you can find various models of saw blades that can be used for working with wood:

Tungsten carbide... They are distinguished by the presence of special soldering, thanks to which cross cutting can be performed. These products are suitable for working with solid wood: they can be used for cross-cutting of wood fibers, chipboard with one or more layers, as well as hard and soft wood, for which it is important to ensure a clean cut.

Such discs have teeth made trapezoidal using hard alloys. In their design, undercutting knives are provided in the thickness. They can be the main element of automatic feed machines, allowing you to maintain high working speed. The teeth provided in such discs are straight. The presence of riving knives and a limited number of teeth improves the quality of chip ejection. Thanks to these features, the saw blade heats up less during operation and exhibits better cutting resistance.

Special variable tooth saw blade, hanging special knives and reduced cutting thickness. The main purpose of such a disc is to perform a rip cut. It can be used to create thin, clean cuts while minimizing waste. Such blades are not suitable for processing poplar wood blanks. The teeth used are characterized by a variable shape and are located at an angle of 10 degrees.

They are used primarily for processing soft and hard wood at a humidity not exceeding 15%. A special feature of saw blades for working with soft and hard wood is the presence of cutting blades, which are in its thickness. They can only be used in conjunction with edging and multi-rip saws. The disc teeth are straight for high quality wood cutting.

Variable tooth discs designed for pendulum and radial cutting. This type of disc is intended for use in conjunction with hand tools, allows you to perform high-quality cross-cutting of hard and massive wood with different levels of moisture. The disc teeth have a negative external angle of up to 15 degrees. Such saw blades are ideal for work in the suburban area, as well as for the construction of residential buildings and gazebos.

Circular saws for tough ground

A circular saw blade can be used efficiently with a beveled tooth saw blade, which can be used to solve a wide variety of construction tasks. A similar tool is suitable for working with wood, allows you to create transverse or longitudinal section in soft and hard wood. It can also be used for processing panels, bars containing nails, metal staples and other fasteners of small thickness.

Such circular saws for wood seem to be the most preferable choice, given that they can be used to solve a wide variety of tasks, while the need for preparatory measures may not arise.

Such saw blades are at an affordable price: they are often cost 2 times cheaper in comparison with specialized counterparts.

Hand saws can be operated using variable tooth discs. This tool is suitable for working with composite panels, wood-based panels, as well as plywood and solid soft and hard wood. It is possible to perform cross and longitudinal sawing, while the disk tooth has a positive front angle of 15 degrees. Such a blade can perfectly complement both hand tools and circular circular saws.

To make fine cuts in solid and difficult-to-cut wood, you can use special variable-tooth blades. They are distinguished by the presence of a positive right angle and a special adaptation - feed stop... Using this tool does not have to put much effort, and the work itself takes a little time. This equipment is suitable for working with materials with knots dropping out in the structure, which can create serious difficulties when working with expensive discs.

Sometimes it happens that when planning to process finishing materials from abrasive, exotic wood, you have to look for special discs that are able to solve such a problem with a better quality and with minimal time costs. In such cases, it is advisable to choose special blades with variable teeth with a slope of 15 degrees. They allow cross cuts and can also be used together with panel saws, conventional circular saws. Also, this tool is suitable for working with high-quality expensive wood with a soft and hard structure, laminated MDF panels, reaching a thickness of 30 mm, as well as chipboard, whose sheet thickness does not exceed 50 mm.

Conclusion

Choosing a saw blade is a daunting task, given that not every consumer knows which tool will be the right option. There are many characteristics that can influence the choice of this product. It is important to remember that the material being processed can affect the at what speed the saw blade should be spinning and what diameter it should have.

You also need to pay attention to the ability of a particular blade to provide an even and smooth cut, since in some situations this can be especially important. If you are faced with a similar problem for the first time, then the help of a qualified specialist will be useful for you, who will help you choose the most suitable saw blade option, taking into account all the necessary requirements and requests.

For enterprises engaged in the construction, repair or manufacture of furniture, an important place among woodworking tools is given to a saw. You cannot do without a saw in a country house or in the country, there is always work for her. A motorized saw significantly increases productivity both in production and in the household. The main equipment for such saws is a saw blade for wood for a clean cut. The quality of work and the speed of its implementation, the amount of waste and rejects generated during cutting depend on the choice of the device. In addition, the risk of injury increases.

Saw blade classification

Unfortunately, there are no canvases that can cope with the same tasks, can work with the same material, and can be installed on any instrument.

Manufacturing enterprises produce two types of structures:

• carbide;
• monolithic.

They are called tungsten carbide because there are tungsten carbide plates on the teeth of the disc. This makes them more reliable. Plate can be cobalt or tungsten carbide... It is these devices that have become very popular with buyers. Despite their far from budgetary cost, they justify themselves by the duration of work and the possibility of sharpening. This tool is widely used when working with laminate and metal.

Monolithic discs are made of one material. Tooling often consists of a large number of teeth that need to be sharpened and re-set periodically. You can sharpen the teeth yourself, which does not require special tools, unlike carbide blades. For their regrinding, a special machine is required.

Monolithic ones come in two configurations:

• with curved teeth;
• with sharp teeth.

Curved-toothed blades have a wide back and are designed for quick work in soft woods.

Blades with sharp teeth, like a hacksaw, are used for sawing soft and hard wood.

According to the intensity of use, disks are classified into three groups:

• industrial;
• professional;
• household.

The names of these groups speak for themselves. For those who are not an avid carpenter, household appliances are suitable. Professional discs are used by those who do carpentry work every day. In production, canvases are used that efficiently cope with the work for a long time.

Everything saw blades have different costs, wear resistance and cut quality.

Technical specifications

Each saw blade produced by manufacturers has its own technical characteristics.

The advantage of the canvas is its balance, resistance to dullness, heating and lateral loads.

Tool sharpening

An improperly sharpened saw blade not only works poorly and quickly becomes unusable, but can also damage the saw motor. Since the blade has a high percentage of wear, do-it-yourself sharpening will increase the life of the tooling. For manual sharpening you will need:

• 2 blocks of wood;
• file;
• sharpener;
• assembly vise;
• colored marker.

It is necessary to remove the equipment from the machine and clamp it in a mounting vise. With the help of two bars, which act as wedges, the disc is firmly attached in one position. A colored marker is used to mark the tooth from which the sharpening will begin. It is important to remember how many movements the sharpening tool made when sharpening the first tooth. Subsequent teeth should be sharpened with the same intensity.

After that, you need to test the disk in operation. If you hear a creak or extraneous noise, you need to take a colored marker, fix it near the saw and slowly begin to rotate the blade. A marker will mark the difference in tooth heights. Adjust this difference with a file.

It is possible to sharpen the carbide disc independently without damage to the blade only when there is a special machine, and it is better to give the blade to a specialist for service.

Choice of canvas

When choosing a blade, questions like “What brand of saw blade should I buy? Is it more profitable to buy cheaper or more expensive? "

The first thing to do is to look at the technical characteristics of the tool for which the device is being purchased, such as:

• engine power;
• permissible loads;
• spindle rotation speed;
• diameter of the pin for the web attachment;
• technical characteristics of the canvas.

The second thing you need to know is what kind of wood you need a disc for cutting, the parameters of the thickness of the processed wood, the type of cut (transverse or longitudinal).

Third: an important role is given to the manufacturer and the price of the canvas. The rating of manufacturers with the best reputation can be made up of the following companies: Premier Standard, Bosch. CMT, Makita, Globus, KONIG, FREUD, Attack.

Work safety

Failure to operate the saw blade can result in injury. That's why you need to adhere to simple rules during operation:

1. The feeding of small workpieces must be carried out with special stops, and not manually.
2. Limit work with a saw blade to a grinder. This is the most traumatic tool that is difficult to hold if the disc hits a knot or other obstacle.
3. The size of the blade should correspond to the diameter of the fit. If this requirement is neglected, then during rotation the eccentricity will lead to a rupture of the disk.
4. You can not remove the protective cover to install a larger blade.
5. You only need to work with sharp discs and change blunt, bent, cracked canvases in time.
6. Do not try to stop a rotating disc by pressing on the side.