Saw, drank! Features of working on a stationary circular saw, expert advice, rules for self-assembly

Sawing wood — a labor-intensive process that involves dividing wood raw materials into voluminous, undeformed fragments. It is performed using a specialized tool that works in a closed cut, that is, in a gap that is formed in the wood as a result of the impact of cutting devices on it.

With the development of technology and the improvement of carpentry, this labor-intensive operation has been greatly simplified, largely thanks to the advent of the circular saw. This highly effective tool has become an indispensable assistant in the primary processing of timber. Today, the circular saw has many modifications for convenient, efficient and safe work. Therefore, it is found not only in sawmills, but also in almost every home.

Purpose of the tool

The circular saw is designed for sawing wood raw materials, particle boards and plastics, when installed with the appropriate equipment. This tool is also called a wood circular saw. The cutting device is a saw with sharp teeth, the rotation range of which is from 4500 rpm.

A circular saw is capable of quickly and efficiently cutting wood both along and across the grain. When longitudinal sawing occurs, the material is cut according to width or thickness. And when cross-cutting, when the working body of the circular saw is located perpendicular to the wood fibers, the removal of wane areas and defects is carried out. After such processing, a joiner's jointer is used to level the surface of the product.

Despite the versatility of a circular saw, cutting metals, steel or other alloys without special saw blades is prohibited.

Therefore, it is most often used in the construction of wooden construction projects, for example, frame houses and bathhouses. And also in the process of repair or for small household needs.

It is not advisable to use a circular saw in large timber processing industries, except in cases where narrowly targeted rough processing of wood is required, associated with cutting or finishing the end joints of large products.

Why do you need a circular saw?

Content

Not a bad hand-held circular saw . Which circular saw to choose: tips and tricks

Previously, a hand-held circular saw was only found in sawmills. Today many private craftsmen are already thinking about which model of such equipment to choose. If you also decide to acquire such a device, then it is important to consider the main characteristics, including, for example, the power source.

Purpose

Most often, saws are powered by mains electricity, but battery-powered analogues can also be found on sale. It is also important to decide under what brand the saw is produced; the most popular today are Makita, Bosch, DWT, Hitachi, but they will cost more than the Sturm, Sparky and Zenit models. If you also need a hand-held circular saw, which one to choose, you must decide before visiting the store. This equipment is designed for convenient and quick cutting of almost any soft material, namely wood, soft metal and plastic. As for wood, all products made from it can be cut, and it is permissible to move the cutting element both along and across the fibers. All models of circular saws provide the ability to make cuts at an angle of 45 degrees.

Tips on which saw to choose: professional or household

A review of circular saws with reviews will allow you to understand which way to choose. When purchasing the device described, you need to determine what this tool is needed for. If you have to carry out construction work on a large scale, which involves cutting parquet boards and chipboards, then you should pay attention to professional models. If you do housework on rare occasions, and most of the time the equipment lies idle in the pantry, then it is advisable to buy a household circular saw.

Quite often, a hand-held circular saw is used for precise and fastest cutting. Circular saw for longitudinal sawing of wood. You can understand which one to choose from those presented in the store by reading the article. Thus, the difference between professional and household tools lies in the resource and performance of the engine. In the manufacture of one or another type of equipment, materials and parts of different quality are used. With less power, discs of less impressive diameter are used, which is why the device is able to cut material to a shallower depth. Hand-held circular saw , the selection and reviews of which are presented in this article, can be used for household use. In this case, the engine will have to be allowed to rest from time to time, the equipment will need to be turned off to cool down.

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An example of using a household and professional tool

If you need a hand-held circular saw, which one to choose, you can decide by reading the recommendations below. If you use a professional model, then in 1.5 hours of continuous work you will be able to cut enough chipboard blanks to assemble 4 cabinets. If you use a regular household model, the same work will take 2 times longer. The quality will remain high, but the cost of a professional tool will be 2 times higher.

Choosing a professional model: Makita 5103R

Quite often during construction work a hand-held circular saw . Rebir ie-5107g2 – circular saw for cutting wooden boards and chipboard blanks. It is recommended that you read the selection tips before making a purchase. The above model is a powerful saw that can be used to cut large pieces of wood and other materials. The model is designed for active use, is highly wear-resistant and is characterized by a wide range of functions that ensure safety during operation. How to choose a hand-held circular saw? The parameters are the decisive criterion. Below we will talk about them in more detail.

Model specifications

One of the most important parameters is power, which in this case is 2100 W. The cutting depth is 100 millimeters, and the rotation speed is equivalent to 3800 rpm. The size of the circle used is 270×30 millimeters, the weight of the device is 9.4 kilograms. For more convenient work, there is a soft start function, which ensures accurate cutting. Safety is guaranteed by instant engine stopping thanks to the electronic brake.

A circular saw. Simple things.

A circular saw

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How to choose a circular saw

How to choose a circular saw. Power, price, cutting depth, layout, etc. A circular saw is not the tool it should be for. Battery or mains?

The equipment is equipped with a durable and reliable cast aluminum support base. The operator will not face the problem of the disk getting stuck, since the device has a riving knife. Safety when operating such tools is paramount; in this case, it is ensured by protection against accidental starting, which is made possible thanks to a switch with a fuse.

Choosing a household saw: Einhell RT-CS 190/1

The main features are the ergonomic handle, thanks to which even a beginner can handle the tool. This is also why the saw is most convenient to use when solving everyday problems. The master can easily replace the saw blade thanks to the key and spindle lock. There is no need to purchase an additional key, as it is included in the kit. You can work with the equipment at home, as it has a low noise and vibration level.

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This reliable and inexpensive circular saw has a dust extraction device with a special adapter that connects to the vacuum cleaner. With this functionality you can keep your workplace clean. The gears of the gearbox are made of a material of increased hardness and strength, which is wear-resistant and has a long service life.

The manufacturer has made sure that the work is made easier, which is also possible thanks to the practical cable clamp. Among other things, it prevents cable damage and curling. The size of the disc is 190×30 millimeters, the number of teeth is 24. At an angle of 90 degrees, the operator will be able to go deeper into the material by 66 millimeters, as for 45 degrees, the cutting depth will be equivalent to 48 millimeters.

Recommendations for choosing a model depending on engine power

Quite often, in the process of repair or construction work, a hand-held circular saw is needed. You will decide which one to choose after reading this article. The consumer must also take into account the fact that the tool may have a motor of different power. With higher motor parameters, the equipment will be able to cut high-density materials and products in a short time. The operator will not experience any difficulties when cutting. The powerful engine is not afraid of even knots in wood. But low-power circular saws have a significant advantage, which is expressed in their low weight. Thanks to this, the tool can be transported from place to place. Thus, models whose power is 2000 watts or less will weigh approximately 7 kilograms. If the saw has a power of 1200 watts, then the weight will be reduced to 4 kilograms. circular saw for everyday tasks ? Which one to choose? Price. an important factor when purchasing. For private use, models with a power of 1000 to 1200 watts are excellent. If the tool is not used professionally, then the power reserve will remain unclaimed. Why do you need a circular saw? The cost of the product will depend on this parameter; the difference in price can reach 100 percent or more.

Model selection by price: Skil 5740 LA

This equipment, whose power is 700 watts, is characterized by 4300 revolutions per minute. The cost of the tool is 3,700 rubles, the mounting diameter is 16 millimeters, the cutting depth is 40 millimeters. If you need to make a straight, neat cut in a tree of any species, then you can use this model. Despite its modest characteristics, this equipment has other impressive advantages, including: ergonomic design, comfortable handle, compactness and low weight - 2.4 kilograms. To prevent accidental startup, the tool uses a power button lock. Increased stability is guaranteed by a large wide metal support. There is a special compartment for storing the key.

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Reviews of the Dewalt DW366 model

If you need a hand-held circular saw, which one to choose , reviews will help you understand. Among the popular models, we can highlight the above-mentioned one, for which you will have to pay 9,200 rubles. The price is due to the high power, which is 1800 watts, as well as the impressive cutting depth of 60 millimeters. The seat diameter is equivalent to 16 millimeters, the maximum speed reaches 5000 per minute. This saw is a professional device and is designed for cutting wood to a depth of 60 millimeters.

The tool is characterized by a high level of safety and ease of operation. The first feature is provided by a casing that protects the user from chips and dust. This equipment can be used not only for professional purposes, but also on a summer cottage, as well as a construction site or in a carpentry workshop.

According to users, this good hand-held circular saw is versatile as it can be used to cut wood of different densities. Users especially like the safety, which is reflected in the reduced risk of injury. The operator can change the range from 0 to 50 degrees during operation. Users emphasize that when operating the equipment, they get an excellent overview of the cutting line, since the design is ergonomic.

Overview of the characteristics of a saw with a battery

If you prefer autonomy, then it is best to choose a battery model, but you should be prepared for less performance. Among other things, the rotation speed will also be significantly lower than in electric circular machines. Such models cope excellently with wood of small thickness and low density. As practice shows, the battery charge may be sufficient for 30-50 minutes of operation, after which the battery will need to be charged. This can cause some inconvenience, since charging sometimes takes up to 4 hours.

Overview of features of the Aeg BKS 18-0 cordless saw

You will have to pay 10,000 rubles for the model. The equipment can be used in buildings without power, which most often concerns construction sites. The rotation speed is 5000 rpm, and the diameter of the circle used is 165 millimeters. The weight of the tool is small and is equivalent to 3.2 kilograms. Features include adjustable cutting angle and cutting depth. The technician will be able to quickly replace the disk. For household models, a jigsaw and a circular saw are not capable of construction. The tool is equipped with a magnesium base, a charge level indicator, and a built-in backlight. The operator will be able to connect a vacuum cleaner to keep the work area clean. During operation, you can use one or two hands at once.

Source

Device and technical characteristics

The circular saw is designed to provide versatility, high performance and safety. The operating mechanism is based on the general principle of transmitting torque from an electric motor to the working body of a circular saw - to the saw wheel.

The design of a circular saw may differ depending on the type of work it performs. The typical design, taken as the basis for any modification of the saw, has several main functional elements:

1. platform - base;
2. an electric motor that transmits rotational energy to the saw blade;
3. saw blade;
4. a body equipped with handles for controlling the saw and holding it during operation;
5. protective casing (upper and lower), protecting the saw blade from sawdust getting into the working mechanism;
6. device for fastening the longitudinal stop;
7. riving knife.

The design of a circular saw can also be supplemented with a depth gauge with a scale that allows you to evaluate the depth of penetration of the saw blade into wood or other material.

For convenience, some saws have a movable motor mount to the base, which allows you to adjust the angle of inclination using a fixing screw and scale.

The cutting depth at an angle of 90° is on average 45-70 mm. And at an angle of 45° from 28 to 48 mm.

Advantages and disadvantages

A stationary circular saw is a professional tool and, accordingly, the pros and cons of its use are associated precisely with this nature of operation. The advantages of this type of equipment are the following:

• a wide range of processed materials and workpieces (lumber of various thicknesses, plywood, fiberboard, chipboard, etc.);
• high precision of operations performed;
• the presence of a sufficient number of protective options to protect the user from injury during operation (protective casing, emergency stop button, connection of a vacuum cleaner, etc.);
• The variety of models allows you to choose the one you need, both by type of execution (on a bed, tabletop) and by technical characteristics (electric power, voltage class, cutting depth, additional options).

The Belmash CBS-2400 model is placed on the floor, but thanks to the presence of wheels in its design, it can move along its surface

Among the disadvantages of a stationary circular saw, the following indicators should be noted:

• significant overall dimensions and weight, especially in relation to models “on a bed”;
• significant noise level during use;
• high price.

Classification of circular saws

Circular saws have a wide range of work functionality, which determines the presence of various types of modifications of this tool. They can be distinguished by classification according to individual characteristics.

By design features

There are two varieties of this device, indicated by the technological features of the work:

• A tabletop or stationary electric circular saw is designed to perform large volumes of work, and is more often used in production. Such a saw is usually called a professional tool. The saw body is fixed in a special dimensional cast frame that can withstand the weight of large pieces of timber.
• A hand-held circular electric saw is characterized as a mobile device capable of sawing material in various planes. It is easy to use, but has little power.

According to the nature of the power supply

There are two methods of generating and accumulating the electrical energy necessary to operate the circular saw mechanism:

• Electrical network. Models operating from the electrical network have a high electric motor power of 4000 W, and therefore require special preparation of the electrical network.
• Battery. In such models, power comes from a rechargeable battery mounted on the body of the instrument. They have low power ratings and require frequent recharging, but are more maneuverable and therefore suitable for domestic use.

The main classifying feature is considered to be the intensity of work performed with a circular saw. The power, type of power supply, dimensions and the presence of additional functions depend on this indicator.

Basic requirements for a circular saw

When choosing a circular saw, you should pay attention to the presence of such frequently encountered additional (useful) functions as:

When working with a circular saw, you need to protect your eyes with goggles and your hands with gloves.

1. Ability to adjust disk rotation speed. Keep in mind that the method for implementing this function can be of 3 types: mechanical and electronic. You can achieve perfectly smooth and neat cuts (without burrs) only by adjusting the rotation speed of the discs, since each material requires an ideal approach. This type of tool is universal in its application.
2. Function of immersion into the material when sawing. This quality is a big advantage of the tool. It is especially convenient in the process of sawing solid slabs. Due to the ability to shift the disk of such a circular saw in the vertical plane, it is possible to cut the material immediately from its middle.
3. The ability to stop disk rotation as quickly as possible. This quality of the tool ensures a safer work process.
4. The presence of built-in lighting and a laser marker will make your work much more comfortable and safer. In addition, thanks to these functions, the cut will be as accurate as possible.
5. The soft start function of the rotating disk can also significantly increase the level of safety, since the possibility of a dynamic jerk when turning on the tool is eliminated. In particular, the presence of this function is desirable for devices equipped with powerful electric motors. In addition, the mechanics of the tool and the electrical network are subject to significantly less stress.

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The device of saws equipped with powerful electric motors has special elements designed for mounting on a surface convenient for performing work. This ensures the instrument remains stationary. As for sawing, in order to carry it out, the material is fed directly onto a rotating disk. The presence of such a function greatly facilitates the user’s work, especially if he is faced with the task of sawing a very large volume of material.

Types and features of saw blades

Important characteristics that determine the performance of a saw blade are:

1. Number of teeth. Their number on the disk can vary from 10 to 90 pieces. The more teeth on the disk, the lower the processing speed of the product, but the cut is cleaner and more accurate, not requiring finishing.
2. Disc inner diameter. This value characterizes the diameter of the saw wheel fit on the center of the equipment or the fixing pin located on the saw device.
3. External diameter. The larger the diameter of the disc, the deeper the cut, but the lower the rotation speed of the blade. The outer diameter should not be larger than the size of the upper protective casing.
4. Disc thickness. Thin saw blade, thickness from 3.2 mm. Used for cutting soft wood and thin materials. If the thickness of the disc is greater than this value, then it can be used with thick and coarse raw materials. They are more durable, wear-resistant and less susceptible to deformation.
5. Teeth angle. If the cutting edge is deflected towards the back of the blade, then this angle is considered negative. The teeth are oriented in opposite directions and have a positive inclination, the values ​​of which can vary from 5 (standard) to 20 (aggressive) degrees. There is also a zero tilt angle. These blades are designed for sawing metal materials.
6. Shape of teeth. A concave triangular tooth is used for cutting laminated wood. Flat teeth with a chamfer are used for construction wood and products made from it. Flat teeth shaped like a trapezoid for cutting metal.

Combined models are popular because they can make transverse and longitudinal cuts simultaneously, without changing the disk.

The design features of the saw blade directly affect the process, the final result and the quality of work.

Saw blades, classification

There is a basic division of saw blades into homogeneous (steel) and with carbide plates.

Homogeneous saw blades are made from tool high-speed steel (HSS), by stamping and subsequent sharpening. The (relative) simplicity of production is reflected in the low cost, and the possibility of self-sharpening is popular among craftsmen.

Saw blades with carbide inserts

The disk body with structural elements of teeth formed for soldering carbide plates is made of steel. The cutting element of the saw blade is carbide plates of the VK-8 type. The use of this design allows you to increase the cutting speed, and the high geometric resistance of the cutting edge, in addition to saving, creates a clean cut.

How to choose a circular saw

You should choose a hand-held circular saw for home work based on three criteria:

• Safety : the presence of a rubberized handle, a protective casing, spindle locking, maintaining a constant rotation speed and an overload protection function.
• Power and rotation speed of the saw blade. The variability of processed materials depends on these indicators.
• Functionality. Possibility of replacing discs of different diameters, mobility, convenient design.

When choosing an electric saw, it is advisable to study the technical capabilities of each model, deciding on the scope of actions to be performed and the characteristics of the materials that will be processed.

Hand circular saw for wood

There are three types of circular models:

• manual
• stationary
• combined.

Hand-held circular saws are lightweight and compact. They are used to treat fixed wooden surfaces. The manual device is designed for direct cutting of wooden workpieces. Unfortunately, cutting along a curve with a hand-held circular saw will not work.

Taking into account all the characteristics, electric hand saws are:

• amateur
• semi-professional
• professional.

The main tool of an electric saw is a disk (circle) that moves using an electric motor. The discs are made of a metal alloy with different tooth shapes. The shape of the teeth is selected based on the material used, for example, MDF, plywood, soft or hard wood.

There are 6 main types of disks:

• A – have a large number of variable teeth. They are used for cutting particle boards and aluminum alloys
• B – universal disks. With their help, you can cut various types of timber. They guarantee high-quality cuts
• C. These discs have fewer teeth compared to previous models. They are used when working with chipboard and soft and hard wood.
• D. They have a small number of flat teeth. After cutting, a rough cut is observed. Mainly used for fast cutting
• E. The discs have many teeth. They are designed for fine cutting of soft grades of wood.
• P – characterized by a small number of teeth. Designed for rough cutting of soft types of timber.

As a guarantee of safety, the saw wheel is covered with a protective box. The most popular are the box models with a fixed top casing cover and a movable bottom one. The power unit is hidden in a housing made of metal or hard plastic. The metal body makes the device heavier, which is why such saws are rarely sold. The master holds the saw by the rubberized handle, which is located at the top or at the back of the tool. On the handle there is a start button for the electric motor.

Plunge circular saws can start cutting from anywhere on the workpiece, and not from the edge, like most models. This function is possible due to the presence of movable mountings of the cutting wheel, on which it can be raised and lowered relative to the platform and body. A sled is similar to a wall saw and can cut pieces from the center of an MDF board, joist board or sheathing.

Stationary circular saws for wood are used to perform a large volume of work, so they are classified as professional tools.

Combined tools are used in cases where it is necessary to carry out operations with variable loads. They are intended mainly for manual cutting. The case contains special fasteners with which the device can be mounted on a horizontal working surface.

Rules for using a circular saw

A circular saw is a dangerous tool, so working with it requires practical skills. Before starting sawing, you should make sure that the mechanisms and electrical cables are in good working order. Check that the saw blade is securely fastened and that the protective guard and riving knife are installed correctly. Also, if necessary, clean the working part of the saw with a brush or coarse cloth.

It is necessary to remove foreign objects from the surface on which the product will be processed, check the stability of the work table and the grounding of the machine. You should protect yourself from sparks and wood dust using special clothing and personal protective equipment.

Sawing should only be done with the workpiece secured, holding the saw device tightly to the surface of the workpiece. At the end of the work, it is important to return the protective cover to its original position and completely turn off the power to the electric saw.

The circular saw has a balanced, complex operating mechanism. It combines high safety requirements during operation and high-precision adjustment of all components, ensuring high-quality work and maximum productivity.

Basic tool parameters

Circular devices can be divided by power. The more powerful the electric motor, the higher the stability and quality of the cut. As power increases, the weight and size of the saw increases. The cost of equipment also depends on this indicator. Therefore, when choosing a tool, you first need to determine the range of tasks that it should solve. Today saws are divided into:

• Household ones, which are used for occasional simple work around the house or on a summer cottage. Characterized by motor power up to 800 W.
• Universal. They live up to their name by being able to perform a wide range of tasks. Universal models can perform complex work, and they are used even in industry. The motor has a power of 800 to 1200 W.
• Professional equipment. They have a motor with a power of 1200 W. This is a very large tool and requires work skills and a certain amount of skill. It is used in serious industries and is practically not used in everyday life.