What is the difference between Circular Saw and Circular Saw

It is a flat bed with an electric drive and a vertically mounted saw blade, also a saw holder (handle) with a power button. There are also auxiliary parts: sawdust collector, guide rulers and hinges, etc. The frame is pressed against the plane to be cut, and the rotating saw blade plunges into the material and cuts it.

Circular saws are divided into 3 categories according to their power.

  • With electric motor power up to 1,2 kW (for infrequent sawing of light, narrow band saw blades (up to 45 mm) with discs with a cross section of 130-160 mm).
  • With up to 1.8 kW motor power (up to a cutting depth of 60 mm with discs up to 200 mm in diameter).
  • With power up to 2,0 kW and higher, with discs up to 350 mm cross-section for cutting even sheet metal and the possibility of securing to a workbench, t.е. for more proficient use.

Material immersion (e.g. when cutting solid panels), when the cutting wheel can move vertically, the cut is not made from the edge, but from the middle of the blade.

Angular speed adjustment of the saw blade. This feature ensures smooth cuts in different materials.

Saw blade brake. Increases tool safety.

Smooth start that eliminates jerking movements when turning on the drive, especially a massive one. Also increases safety, and not counting lower mechanical stress on the circular saw.

Light and laser marking. Comfort and precision in machining is increased.

Can be bed-mounted (only for circular saws). A feature which is very useful in the case of large quantities of work.

Circular saw blades have different tooth heights, cutting profile shapes and tooth frequencies, and are divided into two categories: for soft material and for metal. 1st toothed with teeth tilted in direction of rotation (positive sharpening angle), 2nd toothed with a negative sharpening angle.

  • teeth are needed for a precise and even (not jagged) cut in soft material.
  • Fewer teeth are available for hard materials.

Characteristics of circular saw blades

Every wood saw blade has a number of features that affect the results of your circular saw. Among the most important are:

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Diameter of circular saw blade

The diameter of the disc determines not only the maximum thickness of the material to be sawn but also the maximum number of revolutions of the disc:

There is a tendency to notice that, as the disc diameter increases, the maximum possible number of blade revolutions is decreased. This is because a larger diameter blade will put more stress on the saw. Also, the larger the diameter, the greater the force that tries to break the blade. It is not safe to run a large consumable at too high a spindle speed.

The inside diameter of the seating hole is also important. the circular saw must hold the disc well.

Disc thickness

A thin disc does not need much energy and is therefore easier for the saw to handle. Thin blades use less material since they give a minimum thickness of cut. But they must be handled with care, because they may not withstand too much use.

Thicker discs are much more stable, but the saw that works with them must also be more powerful.

Number of teeth

Depending on the number of teeth, a blade can be used for a particular wood. A small number of teeth is suitable for different densities of wood. A saw cut will not have very smooth edges, so it is better to choose such blades for roughing.

If you have an intermediate number of teeth, a blade can be used for everything from longitudinal sawing of large parts to working with metal.

Blades with more teeth are used to make cross cuts. Longitudinally, they can cause overheating of the material or “burning” of the saw’s motor.

Tooth shape

Another factor that directly affects the quality and speed of sawing is the shape of the teeth. Today the most common geometries are as follows:

The tooth can be negatively or positively inclined. It refers to the angle formed by the cutting edge of the tooth and the radius trimmer blade. This determines how clean the cut is.

Flat sharpening

Flat sharpening for all work that does not require great precision. If you need to make a lot of cuts quickly and the quality is not important, the flat sharpening is the right choice.

Alternating slant

It is a universal inclination. It is used for cross and rip cuts in all types of wood and other materials. The negative inclination angle of the tooth has a good effect on the quality of the finish cut.

Trapezoidal shape

Good for working with laminate as it prevents the laminate from splitting. Alternating between trapezoidal and flat teeth ensures a clean cut. If “trapezoidal” is combined with a negative inclination, a saw blade that is best suited for finish cuts in panels, boards and laminate floors can be produced.

As for monolithic wood saw blades, they have a straight sharpening and two types of teeth: sharp and curved. Sharp boards are good for clean cuts in different types of wood, and straight boards in soft wood.

Types of circular saws

Classification of the tool occurs according to several parameters.

Depending on the depth of cut, circular saws are divided into:

  • small, with a cutting depth of 40 to 46 mm;
  • Medium-sized, with a kerf depth of cut of 50 to 55 mm;
  • Large, with a cutting depth of 65 to 70 mm;
  • Professional saws, with cutting depths of 65 to 140 mm.

Depending on design, there are three types of saws.

    – are of large dimensions and require a special place or even a room for installation. Recommended for high-volume operations, such as furniture production, where several batches of boards must be sawn daily.

  • Table-top. small in size and easy to transport. However, this makes them much less productive than stationary saws. Suitable for smaller jobs, such as building a house or bathhouse.
  • Hand-held. used when it is necessary to cut a small amount of parts from soft materials: some types of wood, plastic, etc. A useful buy for occasional repair work, so the low output and low power will not be a disadvantage in such a case.

Saws are classified into the following categories according to their application.

  • Professional. used in production facilities and workshops. where large quantities of workpieces of varying hardness and dimensions must be sawed on a daily basis. Do not need periodic rest and can work all shift without interruption.
  • Household. as the name suggests, suitable for private use, for example, in home repairs.

The main difference between the saws is the engine life and performance. Professional models have many times more motor power.

One of the most important classifications is based on the type of work performed.

Circular saw for metal

As a matter of fact, this type of tool is the most universal as it can work with almost any material: sheet metal, profiles, pipes, but also wood, plastic, plywood, etc. Cutting blade of such tool is not abrasive like other saws, but is made of special tool steel of higher durability.

You can’t do without such a tool if you need to make a groove in the surface of the part, for example, to cut a hole in wooden panel for sink installation. Starting the cut anywhere on the part, not just at the edge, is the main advantage of the plunge-cutting saw. In addition, it is widely used for multi-layer materials and laminate.

Cordless circular saw

As you can see from the name, it works not from the stationary power supply, as previous models, but from its own power source. That is why such saws have found widespread use in hard-to-reach places, for example, when repairing a roof at a high height. On average, it takes 30 to 50 minutes for the cordless chain saw to operate, after which it must be recharged. And this process is already longer. about 4 h.

How to choose a circular saw

Circular saw, or as it is called popularly. circular saw, has appeared in the beginning of the last century and today it is a hi-tech, convenient and productive electric tool designed for wood and its derivatives (wood chipboard, wood-fiber board, wood-fiber board, plywood, etc.). д.). The indispensability and advantages of the circular saw is that the tool holds the line for the trimmer perfectly, performs a cross cut without problems and can work with a huge number of materials. In order to cut laminate, Plexiglas, plastic or slate it is enough just to install the appropriate cutting blade and choose the required mode of operation (adjust the rotation speed).

The circular saw does not work with materials of mineral compositions, such as brick or concrete. But there are some exceptions, for example Makita has a circular saw with water supply and diamond blade. It should be noted that for cutting and sawing metal assembly saws are used, in fact it is a variation of circular saw, but still such a tool is placed in a separate category. In fact, the only limitation for circular saws is the inability to cut on a curve, that is, only a straight line for trimmer saws.

Submersible circular saws are allocated as a separate class of circular saws. This tool is designed to cut into the workpiece at any point, not just from the edge. The plunge circular saw is characterized by the complete absence of an automatic bottom guard, and the cutting blade is located above the base plate and only lowers when the tool begins to work. It is quite logical that such saws have the ability to adjust the depth of cut, often with a range of this indicator differs in millimeters. The circular saw is used in roofing repairs, dismantling floor boards, making slots and gaps.

Today manufacturers offer circular saws that are not only electric-powered, but also battery-powered. Modern technology has made it possible for a high-powered tool like the circular saw to have a sufficiently long battery and an economical motor. In addition, battery chargers for these batteries are characterized by particular charging speed, so that the necessary refueling intervals can be as little as 30 minutes. The cordless circular saw is, of course, an incredibly ergonomic and mobile tool that will be appreciated by roofers, for example.

Determining the basic working parameters and characteristics for the choice of a circular saw, perhaps the most important and the main is the diameter of the cutting blade of the saw. It is quite logical that the bigger cutting disc the more powerful motor the tool should have, the higher torque indicator should be and the more effective electric stabilization system should be. Naturally the higher all these values, the bigger will be the size and weight of the tool and the cost of the unit.

The maximum cutting depth is also one of the main parameters to choose from. Depending on this index, circular saws can be divided into three groups. The first one with maximum cutting depth in the range of 40 to 50 mm. the tool is suitable for cutting of sheet materials and for on-site work. The second group of the tool with maximum cutting depth of 50-65mm is the most common universal circular saw blades. Professional models, let’s say heavier tools in their class. these are circular saws with maximum cutting depth from 65 mm to 140 mm.

Of course, in the case of an urgent need to cut a very large item or a part with a large height, you can get creative and make a cut on both sides, that is, the cutting blade will not pass through the workpiece.

The rotation speed of the cutting disc influences the cleanliness of the cut, although there is a nuance because the cleanliness of the cut is directly influenced by the choice of cutting disc, i.e. the number and shape of teeth. It should also be taken into account that a high rotation speed results in a higher temperature, which is undesirable when working with certain materials, such as certain types of plastic. It is best to choose a circular saw with variable no-load speed.

If you are not very limited in terms of money, then it is recommended to buy a circular saw with additional options and functions. The presence of such smart electronics will never be superfluous, because it increases not only the productivity and efficiency, but also ensures maximum comfort and safety for the operator, plus. will help to avoid premature failure of the tool and significantly prolong its life.

  • Constant speed function or constant electronics, keeps the blade from jamming and gives a clean cut.
  • Adjustable no-load speed allows you to choose the proper mode for different materials.
  • Soft start function prevents tool jerk when starting to overload the saw motor, thus extending circular saw’s life.
  • Overload protection system for shutting down the tool automatically when it is at the power limit. Again, allows the tool to last for a longer period of time.
  • Engine brake protects the operator from injury, the tool from backfire, and the part or piece of equipment from damage or breakage.

Before buying a circular saw, take a closer look at the instrument’s base plate, because the functionality of the saw also depends on this element. It is on the base plate that all the necessary fasteners and mechanical adjustments for additional elements are installed. It is best to choose a saw with a support platform made of light metal alloys, and it should be made by casting.

What is the difference between a mitre saw and a circular saw

Trimmer and circular saw. saws are very popular, and in carpentry and furniture workshops just can’t do without them. However, often inexperienced users don’t even know that in essence. these are different tools. The fact is that outwardly the saws are similar, and they perform the same function. cutting of the workpiece with the circular saw. Both saws have a flat blade with teeth on the outer edge. It is installed on the axis of the electric drive. The work consists in the fact that the disk rotates and makes a cut in wood, plastic, laminate, aluminum.

That’s all the similarity. And now let’s talk about the differences.

  • Circular saw. device manual or stationary. Working with a manual circular saw, the user swings the saw along the cutting line of the material. In a stationary circular saw, the workpiece is pushed using a parallel stop, achieving the desired size of width. It is used to cut a slate, to cut off surplus material to size. Board is cut with circular saw along the wood fibers and across them. The cutting head with the disc can be tilted to either side, so that it is also possible to make a diagonal cut. Although, note that the maximum cutting depth is thus significantly reduced (1.2-1.5 times). Circular saws have a variable cutting depth, which makes it possible to make grooves in workpieces.
  • The mitre saw has another name. pendulum. Its design differs in the fact that the saw blade swings with the drive, resembling a measured oscillation of a pendulum. The installation is supposed to be stationary. On a table, a workbench or even the floor. The saw is secured in place with clamps or screws. The motor of the circular saw, together with the cutting disc, works in three axes. Particular precision is given to the angle of rotation. The degree scale is very precise and in very expensive models has no errors and indicates the smallest degree of rotation.

Trimming is also called “mitre sawing”, which means it cuts at an exact angle. Thanks to facing, carpenters and furniture makers get a neat connection of parts at an angle. without gaps or curvatures. “Sawing on the whisker”. This is edge trimming.

So what do we get when comparing these two saws, the mitre saw and the circular saw??

  • Same cutting principle. both with the disc mounted on the axis of the electric drive. Tilting of cutting head and blade is possible with both saws. Sawing along and across the grain of the wood. also.
  • Cutting method is different. The cutter and the workpiece are fixed on the surface, and in the circular saw we either “lead” the cutting line with our hands (manual), or push the workpiece (stationary);
  • Possible cuts: in circular saws along and across fibers, in trimmers.only crosswise;
  • Sawing width. the circular saw has no limitations (just “drive” the disk as long as necessary), and the possible width of facing depends on the size of the saw blade.

It turns out that you need to have both a circular saw (for cutting long parts) and a coping saw in your workshop. for precise “bevel cuts. Sometimes masters buy universal equipment: facing and circular saw for dacha in one machine. This combination saw has an upper table (on top, above the motor and disc). It is good in that the upper part of the disk saws straight long cuts, and the lower. cuts into the exact degree of angularity of the edge of the workpiece.

What features to consider when buying circular saws

The first parameter that is important when buying a circular saw. is its type.

  • Handheld circular saws are small in size and weight. They are good for cutting fixed or stationary surfaces, can be used in the household.
  • Stationary circular saws. These are powerful and productive machines that are used in production. Suitable for making quick cuts in large quantities of material. Combination models can be used both as hand tools and as machine tools. What they are for. production.

Other parameters also have an influence on the capabilities of the circular saw.

  • Rotational speed of the circular saw blade: the higher the speed, the more accurately the cut will be made and the less likely it is that the saw will jam while working. High rotation speed is a must for hard types of wood.
  • Saw power determines cutting speed. The more powerful the tool, the faster it will work. The most often there are gradations of power under 800 W (small power saws, for home or occasional use), from 800 to 1200 W (medium power, suitable for production purposes), over 1200 W (high power saws, related to professional equipment).
  • Diameter of disc size, it is calculated both on the outer and inner size, in professional circular saws it can reach 230 mm or more.
  • Inclination adjustment: when choosing a circular saw it is important to remember that not all models have the ability to make cuts at an angle. There are those models that allow you to cut the material strictly at an angle of 45 degrees, there are also those that allow you to saw at an angle of 60 degrees. In addition, most saws only have a cutting angle adjustment on one side. If you need two-way adjustment, this parameter should be specified when buying: such models exist, although they are not many.

In addition to the main characteristics responsible for the quality and reliability of the saw, it is worth paying attention to additional features for ease of use:

  • Presence of disc speed control. allows you to choose the optimal mode of operation with different types of materials.
  • Powered by mains or batteries.
  • Soft start. The function to avoid overheating and damage to the saw’s motor.
  • Built-in laser level, with which you can control the accuracy of the saw’s direction.
  • Locking against accidental start. a useful function, especially for domestic saws.

And of course you should pay attention not only on a combination of the main and additional parameters, but also on the price of the equipment. A quality tool does not always have to be very expensive, but even to choose a saw in a low-price range, if you plan to actively use it, do not.

✓ What to buy a circular saw at vitals.ua?

Optimal, and at the same time inexpensive model of the circular saw brand Vitals is: Circular saw Vitals Master Rg 1913BW.

The most powerful electric circular mower is saw Vitals Master Rg 2321BWa circular mower with power of 2100 W and idle speed of 4300 rpm. The Rg 2321BWa hand held circular saw comes with a clamping wrench, an extra set of carbon brushes.

How to choose between worm-drive and sidewinder circular saws

) Circular saw

The circular saw is used primarily for fast, precise straight-line cutting. It copes best with sawing long, thicker materials. Circular saws are used primarily for cutting wood, although they can also cut other materials (in some cases with a special saw blade). Some of the most common materials that can be cut with a circular saw. It is used for chipboard, plywood, wooden beams, floor coverings and hardwood screed panels.

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