How to choose a miter saw blade

All about miter saw blades

A tool such as a miter saw is not familiar to everyone. Despite the large number of materials that this tool can cut, its main purpose is specific. Therefore, such a saw is often used by professional finishers. At home, it does not become necessary so often. However, when you do not want to overpay for repairs, it makes sense to purchase all the necessary tools to make your work easier.

But in this case, you need not only to understand the principles of working with it, but also to understand the consumable parts of this tool. The main of these parts is the cutting disc.

Features of the

Saw blades have a number of basic parameters that help differentiate them.

• outer diameter;
• inner diameter;
• number of teeth;
• tilt of the teeth;
• the shape of the teeth;
• product thickness.

Outside diameter is generally not a significant indicator for cutting speed. He is responsible for the cutting depth. It can be determined by the inner diameter of the saw cover. A large circle (305-355 mm) is not placed on a product with a smaller casing diameter. (By the way, it is not recommended to remove the protection for safety.) Most often, products with an indicator from 130 to 250 mm are taken for such a saw.

The inner diameter must have the same value with the dimensions of the power shaft on which this product is fixed. If it is larger, then when the saw is operating, the off-center disc creates large vibrations, which leads to severe wear of the bearings and the shaft itself, as well as breakage of the disc or its teeth. In addition, such a fastening is a gross violation of the work regulations, and is dangerous for humans.

The cutting speed depends on the number of teeth on the disc in direct proportion. In addition, a large number of them gives a smoother and more accurate cut. But there is also a significant drawback of this approach. it is the increased load on the sawing tool engine. There are disks:

• with a large number of teeth (from 80 to 90 pcs.);
• with an average number of them (from 40 to 80 pcs.);
• small-toothed (up to 40 pcs.).

My Top 2.10″ Sliding Miter Saw Blades and How To 2X Their Lifespan

For high-quality sawing, the inclined angle of the teeth is also very important. It is fixed by the deviation of the cutting edge of the tooth from the radius of the saw blade. This parameter can be:

• standard (the angle varies in the range of 5-15 degrees);
• positive (tilt 15-20 degrees);
• negative (from 0 to minus 5 degrees).

Finally, the configuration of the prong. Each shape is designed for a specific cut. Therefore, a tooth is distinguished here:

• flat. cuts longitudinally at high speed;
• trapezoidal flat (alternation of high in the form of a trapezoid and low flat teeth). cuts wood, plastic and soft types of metals (aluminum);
• interchangeable (the teeth have an alternate slope to the right and left). helps to cut wood, chipboard and composites cleanly both along and across;
• combined (one flat cutter follows four replaceable ones). completely universal;
• interchangeable with a larger sloped side. used for choppy types of material, as well as for clean cuts at right angles.

As for the thickness of the saw blade itself, the thickness of the cut depends on it. The standard is 3.2 mm. If the indicator is higher, then this will reduce the amount of material, and if it is much less, then this will lead to overloading of the equipment and possible deformation of the disk.

However, when working with each type of material, there are also peculiarities of saw accessories.

Concept

A miter saw is a tool designed to make straight cuts at a given angle. The saw cut angle can be either 90 degrees or 45. Its main advantage is that it copes well with long details and unusual shapes of surfaces. A striking example of these is a plastic floor plinth.

But this tool has other features.

The miter saw can cut a large number of equal (given size) miter and straight slots. That is why it is a must in the set of craftsmen for the manufacture and assembly of furniture and doors.

The appearance of this unit resembles a conventional circular saw (circular) mounted on a movable arm. It allows the discs to descend not only vertically, but also at any angle of inclination. This tool can cut various materials:

• wood;
• metal (in particular aluminum);
• plastic;
• a rock.

As with any saw, the type and quality of the blade depends on the material chosen. For the most effective work, you need to choose the right component.

How to choose the right one?

In modern renovations, miter saw blades for aluminum, plastic and stone are most often required. These materials are actively used to create modern decor.

In order to choose a blade for soft metals and polymers, you need to know that there is a difference in sawing a hollow structure or a dense solid. The quality of the cut here mainly depends on the number of teeth. So, to obtain a result close to ideal, with hollow structures, it is better to use discs with a large number of teeth. Dense material is better sawn with a small-toothed nozzle.

An important criterion is the thickness of the disc and the material from which it is made. The best choice is a solid carbide (high carbon) metal cutting attachment. It lasts longer and can be re-sharpened. The same cannot be said for welded teeth.

This quality is inherent mainly in European brands. The cost when choosing an expensive brand name pays off during operation.

Good quality can be noted in the brands Bosch, DeWALT, Makita, CMT. The same firms also produce construction tools, including miter saws.

If we talk about the angles of inclination, then for soft materials such as plastic, it should be negative. This gives the cleanest cut possible. The shape of the teeth is quite varied. The universal drive may be the best option. You can never go wrong with him.

A simple alloy of metals is not enough to perform a high-quality cut in stone. A harder material is needed here, in the role of which is diamond sputtering. In this case, the decisive factor in the selection is the grain size of the abrasive coating. The larger it is, the less beautiful and high-quality the end cut will be. Fine diamond plating is much more useful and clean. But to prevent overheating of the engine, it is better to choose not the smallest value.

It should be noted that the blade of such circles only remotely resembles teeth. Their design is more like a periodically divided, monolithic cutting blade. The shape is explained by the fact that the sawing is carried out due to the friction of the abrasive against a hard stone.

Circle replacement

When performing repairs even at home, the periodic change of materials also requires the replacement of the saw blade. It is not difficult to change it, but it is still worth knowing the correct sequence of actions for your own safety.

It is necessary to start by installing the protective plastic casing (if any) in the upper position. To do this, unscrew the side auxiliary bolt, raise the structure, and then fix it with the same bolt, just in a different position.

Next, take a hexagon, which unscrews the clamping bolt in the center. In this case, on the back of the saw, it is necessary to press the button of the shaft locking mechanism, which is a stopper. It prevents the shaft from moving. Therefore, while holding it, you can press out the central bolt using the hexagon. Then the bolt must be unscrewed (you can use your hands), remove the side stopper (looks like a wide washer) and then the disc.

Installation is carried out upside-down. The disc is put on the shaft, then a lock washer is placed, then the bolt is screwed in by hand until it stops. To clamp the nozzle, you must press the button, and while holding it, tighten the central bolt to the limit using a hexagon.

Once the saw blade has been mounted, it can be checked for strength with a slight longitudinal movement. If there is no backlash, the installation is correct, and you can start cutting.

For information on how to sharpen a miter saw blade, see the video below.

How to choose a miter saw blade

Saw blade. the “weapon” of your miter saw. And it depends on its quality, efficiency and purpose what kind of material you can work with using your miter saw.

Naturally, the main material for which miter saws are used is wood of various species (soft and hard), as well as woodworking products. veneer, plywood, chipboard, etc. However, modern end saws are increasingly used for processing other materials as well: plastics, plastics, laminates and even soft metals.

With all the variety of choices, the main characteristics of saw blades intended for use on end saws are the dimensions of the diameters. landing and external.

The classic rim for most miter saws is 30 mm.

This characteristic varies greatly depending on the manufacturer of the saw blades. Of course, there are the most common disc sizes. It. 210 mm, 216 mm, 255 mm, 305 mm.

Important! All manufacturers of miter saws describe in the instructions for use of the equipment, which saw blade diameter is standard for a particular saw. Do not risk using discs of non-standard diameter on your trimming! Its mechanism is designed to work with specific disc sizes, and the use of non-standard consumables can provoke severe beating, the appearance of chips and burrs along the mowing line of the cut (which is often mistakenly attributed to the low quality of the saw blade), the curvature of the mowing line of the cut, as well as rapid overheating of the end motor. saws. The parameters of the protective cover on the unit are also designed for this, which do not just do not allow the use of enlarged saw blades.

However, there are far more serious and less obvious differences between saw blades from different manufacturers. It. the method of their manufacture, the material of the saw blades, as well as the sharpening and geometric shape of the cutting teeth.

Solid saw blades are not suitable even for semi-professional use. They become blunt faster, require a set of teeth, give a cut of the worst quality. Yes, practically no one produces them.

There is also a way in which discs are manufactured in production. For example, the highest quality discs (consider the example of Bosch) are cut from blanks exclusively using a laser. This allows for the highest possible alignment of the saw blades on the miter saw shaft, as well as the best possible balancing of the blades and, accordingly, their increased durability in use. The cutting edges of the discs are also specially processed to increase their service life without the need for additional sharpening.

Thicker teeth withstand side loads better!

The angle of the cutting teeth is specially selected for the material to be cut.

In particular, for cutting metal tiles, plastic and aluminum, saw blades with cutting teeth are used, which have a negative angle of inclination of 5 degrees. Here it is important that the teeth have a different shape of sharpening: odd. trapezoidal (for rough sawing), even. straight (for fine cutting of thin materials). Discs with the above configuration are perfect for, for example, thin laminate sheets. And for thicker ones, you will need discs with teeth of the same shape, but with a positive angle of inclination of about 15 degrees.

For sawing wood and materials containing wood, blades with a positive angle of inclination and one-sided sharpening with alternating direction are required. This is the most versatile type of sharpening, used for fast cutting of wood across and along the grain, cutting multi-layer composite materials or plywood. These blades give clean cuts and sharp edges in wood.

Also, do not forget about the number of teeth on the disc.!

For coarse sawing of construction timber, formwork with adhered residues of concrete, aerated concrete, etc., saw blades with 12-16 teeth (for example, the Bosch Construct Wood series) and a special profile with increased resistance to foreign bodies in the wood are required, i.e. concrete, nails, etc. For high-speed longitudinal cutting of wood, a saw blade with 20-24 teeth is enough. It removes sawdust effectively and performs well on soft woods. 36-48 tooth blades are better for cross cuts and work with hard wood and wood-containing materials. If you are dealing with laminated chipboard, you need even more: 40.64 teeth. At the same time, the cutting speed will decrease, the load on the saw will increase, but the cutting line will be clean.

Remember: the more teeth a saw blade with carbide teeth has, the higher its cost, because the bulk of the price of a blade is formed precisely from the amount of carbide taps.

If you have noticed, most of the saw blades from the professional category are also “decorated” with through dot cuts or wavy lines. These patterns are usually created with a high-precision laser and have nothing to do with embellishment. Their functional purpose. compensate for thermal deformation in heated discs and reduce the noise level emitted by the miter saw during operation.

Still have questions? We have qualified consultants to help you find the perfect tooling for your tool and work purpose. Just call:

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 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.

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:

These systems differ only in their design. Rotation of the disk 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 disc mechanism of which is not very powerful, can be operated in areas where there is no electricity supply.

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 neat cut, you need a large number of teeth. But the work will be much slower compared to a saw with fewer teeth.

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.

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 install a large diameter saw blade, you need 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 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.

When the operation is over, the saw is checked. A test cut is made. If extraneous noise appears, it means that the workpiece is fed unevenly, that is, the height of the tooth is not uniform. Sharpening will have to be repeated.

Purpose of the disc

The circular wood disc can be used for processing various types of wood. Wood is a material that can be easily cut, and therefore, when working with it, no serious problems should arise.

In addition to wood, the miter saw can be used to process polymers such as plexiglass, polystyrene or laminate. They are also quite soft materials, so it’s easy to work with them.

Denser materials such as aluminum, copper and iron alloys, profiled sheets, pipes, natural and artificial stones, marble can also be cut using circular saw blades. This will require special wheels of special strength.

Additional features

When working with wood, it is very often necessary to saw the workpiece lengthwise. Some circular and miter saws are better suited for this than others. It would be wrong not to talk about these differences.

Some models of circular saws are designed to be mounted on a work table or workbench with the disc facing up. In this case, the blade guard is retracted and locked. It turns out a kind of stationary saw. The operator holds the wooden part in his hands and feeds it onto the rotating disc. Sometimes it is more convenient to work in this way than to move the saw along the part.

Combined “trimming

In much the same way, you can cut parts with a combination miter saw. There are not very many such two-in-one models on the market, but they deserve the closest attention.

The peculiarity of their design is that the saw blade works on two sides: the lower part is used for facing and sawing at an angle, the upper part is used for sawing workpieces lengthwise. For this, a special platform is provided above the electric motor, like a stationary circular saw. The guide fence allows you to set the width of the cut part.

Of course, in terms of their characteristics, such models are somewhat inferior to their highly specialized counterparts in the accuracy of work, but their strength lies in their multifunctionality.

If for some reason you are limited in your choice and you need to choose one tool, the combined miter saw will be the best choice due to its versatility.

Such tools are loved by professional craftsmen. For example, in the work of installing doors, “trimming” will help to connect the parts of the box and platbands “on the mustache”, and on the upper platform, you can quickly saw off the required width.

Main settings

The parameters of the circular saw wheel include outer diameter, inner diameter, thickness, number of teeth, inclination of teeth, their configuration.

The outer diameter varies from 13 to 25 cm. This characteristic does not affect the speed of processing the material, but determines the depth of cut. The inner diameter, which is also called the landing, is an important parameter corresponding to the size of the power shaft on the circular saw.

The thickness of a circular circle is usually measured in tenths of a millimeter. The standard size is 3.2 mm. The width of the cut depends on this indicator.

The number of teeth affects the cutting speed and material finish. The more teeth, the less time it will take to process. However, the cut location will look less attractive. The number of teeth on a circular saw blade usually ranges from 10 to 100-odd.

Based on this indicator, all existing disks can be sorted into three main categories:

Selecting a Blade for a Sliding Miter Saw

• Low tooth discs: 10 to 40.
• Wheels with the number of teeth from 40 to 80. They belong to the universal variety: suitable for processing a variety of materials. both hard and soft.
• Frequent tooth discs, more than 80 pieces.

Tooth slope is the amount by which the cutting edge deviates from the surface of the main body of the wheel. Discs can also be classified into three categories based on tooth slope:

• With negative deflection angle. from 0 to 5 degrees.
• Discs with teeth deflected by approximately 10 degrees. This slope is considered standard.
• With teeth tilted more than 15 degrees.

Depending on the purpose of the circular saw blade, the teeth can have different configurations:

• a flat cutter is well suited for sawing wood along the growth of its fibers;
• replaceable cutter can be used for both longitudinal and cross cutting;
• combination cutter is a combination of flat and exchangeable cutters.

Miter saw design

The basis of the machine, of course, is the electric drive (motor), the disc itself for the miter saw (for metal or wood), the table (footboard) and the handle.

The engine start button is located, as a rule (on most models), on the step. The handle is necessary to act on the disc and provides the necessary feed force of the tool.

Various tool steels and alloys can be used to make a metal blade for a miter saw. However, all of them must have increased wear resistance and resistance to fatigue failure. In addition, a significant amount of thermal energy is released during operation, which leads to significant heating of the tool. Therefore, these materials must also be heat-resistant and retain high properties even at elevated temperatures. Where there is a lot of heat, there is also a large linear expansion. This feature should also be taken into account when choosing the design and material of a metal blade for a miter saw.

Choosing a blade for a miter saw for metal

210-315 millimeters. the range of the outer diameters of the discs. The inner diameter (bore) is standard and is 30 millimeters. The tool can be easily changed as needed. Experts recommend buying a set of discs of various diameters at once. This will allow the most efficient use of the resource of the tool and select the optimal modes of material processing.

When choosing a disc, it is necessary to take into account the material for which it is intended. As a rule, this information is indicated by the manufacturer on the packaging of the instrument.

In addition, not every disk can be installed on certain machines. In other words, in some cases there are restrictions on the diameter of the saw to be installed. If the recommendations from the manufacturer are disregarded, the electric motor may burn out.

Of course, there should be no damage to the surface of the tool. Any pothole or even a scratch can serve as a destructive stress concentrator. Such a disk can simply collapse during work and cause injury to the worker.

Types of rotation gears on the machine spindle

Rotation is transmitted to the disc by means of a gearbox. But a belt drive can be used. Each method has its own pros and cons. Thus, the belt drive is very quiet. However, oil on the belt or pulley could cause an accident. In addition, belt slippage is possible during rapid plunge feed. This can result in costly equipment repairs. The gear train (reducer) guarantees slip-free operation, however, it is accompanied by perceptible vibrations, which leads to accelerated wear and chipping of the working part of the cutting tool.

Electric drive types

The electric drive can be either a collector type or an asynchronous one. All other things being equal, preference should be given to asynchronous. According to experts in the field of electrical engineering, such devices are unpretentious to operating conditions and more reliable, which means they will not require expensive repairs. The disadvantage is their higher cost. Although relatively inexpensive machines equipped with a drive of this type have appeared on the market recently.

On most models, the drive is structurally located behind the disc. Although there are also models in which the engine is located on the right or left. If so, the engine box will obstruct your view and could result in serious injury. Therefore, it is better to take machines on which the electric motor is located in the back.

Tool manufacturers

The most famous company for the production of metal discs for miter saws is “Makita”. Tools, equipment and consumables from this company have gained popularity all over the world due to their high indicators of reliability and quality. The traction function is a special feature of the Makita crosscut saws. Not every manufacturer was able to implement such a constructive solution.

Also worth noting are manufacturers such as “Bosch” and “Interskol”. Products under these brands may cost a little more. But it’s better not to skimp on quality and safety.

Types of reciprocating saw blades

The cutting tool of a reciprocating saw is a blade, which is a plate made of special high-strength alloys with cutting teeth on one side. With the help of various types of blades, you can make cuts without burrs and burrs with maximum accuracy.

Sharpening rules

Most often, carbide brazing will wear out along its top edge. Over time, it is grinded and rounded by approximately 0.1-0.3 mm. The front edge of the cutter also wears out. Avoid severe bluntness of the cutting elements, since more material will have to be grinded from the cutter to align the edges. The fact that the equipment should be sharpened can be determined by the type of cutter edges and by the quality of the cut: torn edges with a large number of chips remain.

With proper sharpening measures, it becomes possible to sharpen the cutters about 25-30 times. This will provide the required sharpness of the cutting edge. To achieve these results and significantly extend the service life of the tooling, it is recommended to sharpen the tooth along the back and front planes. Of course, you can grind one plane of the saw tooth, but the number of attempts will decrease by 2 times. The figure below shows how the number of sharpenings affects the grinding of a tooth on one and both planes.

When sharpening the cutters of the tooling, it is recommended to make the last abrasive pass along the back plane of the tooth. On average, the amount of grinding of the metal of the tooth should be in the range of 0.05. 0.15 mm.

Before starting the sharpening procedure, it is necessary to remove all dirt from the saw blade and find out the values ​​of the sharpening angles, which are usually indicated on the equipment.

Disc design

When choosing accessories for circular saws, one should take into account the quality of the product, which can be found out by carefully examining the blade. Good wood saw blades are laser cut from sheet steel, then carefully balanced and sanded. Signs of operations performed on the disc can be seen if you look at its surface in the light. There will be visible radial marks left by the grinding machine, which diverge along the entire blade, starting from the landing hole. Budget saws do not have such marks, which indicates a lack of balancing.

The quality of the grinding is also noteworthy. The body of the disc should not be rough, but have a smooth surface. Poorly sanded tooling will adhere to the resin in the wood and make the sawing process more difficult.

To compensate for the expansion of the metal during heating, as well as to reduce noise and damp the vibration of the disc, radial slots are made on its plane.

On more expensive equipment, thin spiral cuts are made using a laser, and a protective layer is applied to the surface of the disc.

A high-quality circular saw blade is not marked with paint, all inscriptions on its surface are applied by a laser engraver. A lot of information can be learned from the marking. Which one is shown in the following figure.

How to sharpen a disc with your own hands

To sharpen a circular saw, four basic angles are taken into account:

• α is the back angle;
• γ is the rake angle;
• β. taper angle, set by the rear and front angles (β = 90 °.γ-α);
• Ɛ1 and Ɛ2. bevel angles, both front and rear planes.

Picking Circular Saw Blades | Table Saw | Miter Saw

The sharpening angle of the tool is selected according to the type of material to be processed and in the direction of the cut, which is very important when sawing wood. To carry out cuts along the grain of the wood, the tooling must have teeth with a sufficiently large rake angle (from 15 ° to 25 °). Cutting across the grain requires a rake angle (γ) of 5 ° to 10 °. On universal saws, which allow cutting both along the grain of the wood and across, the rake angle has an average value of 15 °.

A negative rake angle is used for tools that have to cut plastic, non-ferrous metals and trim wood.

In addition, the hardness of the material also affects the sharpening angle. Tooth sharpness (β) must be reduced before cutting hard materials.

Cutter configuration

You can find out about the purpose of a particular disc based on the configuration of the cutters.

• Straight sharpened tines cut wood quickly but dirty.
• Tines with alternating bevels in different directions allow sawing wood in different directions, but do not withstand shock loads.
• The combination of trapezoidal and flat teeth avoids chipping on the top layers of the material, for example when cutting chipboards and plastics.
• Combination of teeth with three types of sharpening increases cutting speed and ensures good edge cleanliness when cutting both soft and hard materials.
• The alternation of triangular teeth and teeth with a concave cutting edge allows you to cut the laminate without using a pre-cut.
• Chamfered teeth with wide backs can withstand cement and nails hitting the cut line.

The circular saw blade for metal has a slightly different tooth configuration.

Thanks to this geometry of the cutters and the material from which they are made (ceramic-metal brazing), the productivity of the tool increases, vibration is reduced, and the metal cutting process occurs without the formation of sparks.

Canvas marking

Reciprocating saw blades are made from the following materials.

• HCS. This mark indicates that the basis of the tool is high carbon steel. Saws are designed for cutting wood and products based on it, as well as plastic and rubber.
• HSS is tool high speed steel. With its help, you can work on non-ferrous metals, as well as cut sheet and profile metal.
• BIM is a bimetallic alloy that is a combination of the tough and flexible HSS and HCS steels. These blades have a long service life and are used for cutting aerated concrete, as well as sawing boards with nails.
• HM / CT are carbide tooling. Saws are used for cutting porous and abrasive materials: structures made of concrete, fiberglass and fiberglass, aerated concrete and tiles.
• CV is a chromium vanadium alloy. Tooling made of it is characterized by increased wear resistance and is used for work on plastic and wood of any species.

Landing diameter

It is very important that the diameter of the machine shaft and the seat of the disc match each other. Some types of sawing equipment have additional holes for rigid fixation on the pins. Rigging, as a rule, has seats of the following sizes: 16, 20, 22, 30 and 32 mm.

Disc thickness

The width of the cut depends on the thickness of the rig. The standard saw blade thickness is 3.2 mm. It is important to take it into account in the production of cabinet furniture, for example, when drawing up a cutting sheet for sheet material. In addition, its strength depends on the thickness of the disc. Thin rigs quickly overheat under heavy operating conditions. Thick tooling is robust but recycles large amounts of material into chips.