All About Circular Saw

The table circular saw is designed for sawing wood products. The main cutting element is a sharp toothed disc.

The main function of the unit is the processing of bars, boards, OSB sheets, fiberboard, plywood and other materials in the direction across or along the long side. Professional table saws for wood cope with plastic, drywall, plexiglass, polycarbonate, aluminum, non-ferrous metals.

Circular saw, advantages:

  • power supply from 220V and 380V mains;
  • small dimensions;
  • a light weight;
  • mobility;
  • processing of wide workpieces.

The principle of operation of any electric circular is similar, regardless of the size and type of power supply. In addition to the shaft and the saw blade, which always rotates towards the operator, the device has an electric motor. Its type depends not only on the power or durability of operation, but also on the belonging to the class.

Manufacturers offer a tabletop circular with a motor:

  1. Brushed. They are usually installed on cheaper saw models. This is not a bad thing, because the collector is resistant to minor voltage drops in the network. But the synchronous motor is not intended for long-term operation. The constant friction of the brushes will heat up quickly, and without an effective cooling system, equipment will fail.
  2. Asynchronous. With it, the table circular saw is more productive. Since there are no brushes, the cutting time without stopping is longer. The brushless motor is installed on professional and semi-professional equipment. And also reliable and proven brands equip cordless saw models with them. They use the battery charge more rationally, so there are more and more people who want to buy a desktop circular with a battery. What could be better than an autonomous and reliable assistant that can be used anywhere, and even without the need for maintenance.

Desktop circular – some disadvantages:

  • noisy operation of engines;
  • poor vibration absorption;
  • cutting workpieces with limited parameters. The indicated disadvantages do not apply to all models of disk equipment. Modern manufacturers have set themselves the goal of leveling the shortcomings of even household appliances, making them efficient and comfortable to use. A circular table saw of small dimensions and motor power up to 2000 W is suitable for home use, small and medium-sized businesses.

It is compact, takes up little space, but has wide functionality for high-quality performance of the assigned tasks. Large units with a motor power of 2000-4000 W can be used in sawmills, woodworking, furniture shops, carpentry workshops, as well as other large-scale industries in Ukraine.

The most expensive in terms of cost in the line of professional circular table-type machines are battery-powered. They are mobile and easily transported to the desired place of work. The independence of the power supply point makes such equipment cost-effective for the consumer, regardless of the price. If you are at a loss in deciding which model to buy, please contact our specialists for advice. The S Torgom online store offers a catalog of circular saws with a jointer from leading manufacturers.

As an official dealer of brands: Makita, Bosch, Odwerk, Einhell, JET, FOX Machines, Metabo, the store has the right to provide the necessary certificates, permits, guarantees for goods, set prices, discount programs. Thanks to an individual approach and maximum understanding of needs, we have a large base of loyal customers throughout Ukraine. Delivery is carried out to any city: Kiev, Dnipro, Kharkov or any other.

Table circular saw – a type of circular saws, distinguished by the fact that during operation they are stationary on a flat surface.

Before you buy a desktop circular, it is important to study the pros and cons.

The advantages of table circular saws (machine tools):

  1. Small size – can be deployed anywhere.
  2. Convenience of transportation is a consequence of the first plus: due to their small dimensions, it is convenient to transport them.

Their disadvantage can be called productivity, which will certainly be lower than that of portable hand-held counterparts, due to the inability to carry the tool with you. If you need a tool for building a house, a bathhouse, or other household objects, sawing machines will serve you well.

Types of table circular saws

Desktop machines can be classified primarily according to the class of professionalism:

  1. Household: models of tools that do not have high requirements for use, and are suitable exclusively for household work where high power is not required. For example, roof repair or wall cladding.
  2. Professional: Advanced tools that can cut wood of varying thickness and hardness for hours without interruption. Often used in workshops and sawmills.

Circulars are subdivided according to the parameter of the cutting depth at right angles – 90 degrees. The deeper the machine can cut the bars, the more it fits the criteria of professional models, but the more power it requires for this. For example, the cutting depth of the machine in the region of 40-50 mm makes it an excellent household circular. But for large-scale construction, it is better to choose a table saw, the depth of which starts from 65-70 mm, and in some cases can go up to 130-150.

What else do you need to know about table saws?

  • Various disk configurations. There are situations when the disc that came with the machine is grinded, and a new one is needed. Here it is important to pay attention to the bore hole diameter on the disc: it needs the same as it was in the past so that it fits without problems.
  • The number of teeth on the disc. Despite the fact that the blade can fit completely to the saw, for some jobs you also need to look at the number of teeth on the blade itself. For example, when sawing plywood or laminate, it is important not to break the sheet itself during operation. A large number of teeth will provide an even cut, and, accordingly, will not spoil the workpiece.
  • Disc thickness. Another parameter adjacent to the previous one. Also provides smooth edges on the material being cut. A thin disc, for example 1.8 mm, with enough teeth will work like a laser.

Options that the machines can be equipped with:

  1. Spindle lock – allows for quick replacement of the working disk.
  2. Fixed Mount Kit – Equipment for securing a table circular saw for later use as a sawing table.
  3. Soft start – consistently increases engine speed.
  4. Guide Rail Handling – Makes it easier to handle boards of varying lengths and uneven edges.
  5. Blowing off sawdust – a branch pipe through which sawdust is thrown out.
  6. Electric brake – quickly brakes the disc when the tool is turned off, increasing safety.

An important point: a table circular saw for wood, metal or plastic, if mishandled, is an extremely traumatic thing. Make sure you have protective equipment before starting work.

The consultants of the call center of the online store 7745.by will help you to buy a table saw in Minsk or any other city . You can get the goods in two ways: at pick-up points or arrange delivery . With any purchase, you get bonuses for the next one.

Frequently asked questions about table circular saws

How to Choose a Table Circular Saw?

The most important thing is to decide on the future scope of work. The more the load is planned, the more powerful and more expensive the tool should be. A compact handheld model with mains supply is enough for home. For a small workshop, a table-top design of the machine is suitable, but for professionals – mainly stationary equipment.

In addition to design features, pay attention to the technical characteristics:

  • power (up to 800 W – household, from 800 to 1200 W – semi-professional, more than 1200 W – professional);
  • the number of revolutions affects the quality of the cut and the accuracy of the seams, therefore the best average is 4500 rpm;
  • the size of the disc – the larger it is, the thicker the workpieces can be cut, but in the arsenal it is better to have several different saw wheels;
  • the dimensions of the table and the possibility of expansion determine the possibility of working with long elements.

The table saw is more compact and lighter. It can be carried and conveniently transported. Takes up less space, but cannot work with long parts.

Floor standing can be transportable, but more often the structure is heavy and therefore stationary. It is much more powerful, cutting accuracy is higher, as well as productivity. This is professional equipment with advanced features.

How to choose the best circular: desktop, construction, stationary.

When making straight cuts in wood, a circular saw is used, but with it it is not always possible to maintain the required accuracy and required geometry. A hand tool, with which the carpenter moves along the workpiece, is preferable for one-off work. For standard large-scale circulars on wood, when the master stands still, and the board is pulled along the work table, is more convenient. It is usually installed in the center of the room, allowing easy access from all directions.

Actions related to sawing can be carried out on other equipment, and each has a certain unique advantage:
– angle cutters clearly end the boards across the fibers (plus the device is easily transported to the installation site);
circular saws perform blind longitudinal grooves and cuts;
– tape machines allow you to obtain a minimum cutting width with a much higher workpiece height.

Division into types according to the operating condition.

Table circulars for the home.

They are used for occasional work in a home workshop for longitudinal division of boards and cutting slats, for example, Proton PDS-200.
They differ:
– brush motors with power from 720 to 1200 watts;
– small size of the working table (500 x 335 or 525 x 400 mm);
– a base made of a lightweight tubular profile;
– the need to use additional supports when working with dimensional details;
– tables made of 1.2-1.5 mm steel sheet with no grooves for stops and additional devices (inconvenient fixation at the ends).

Construction circular saws.

They differ from desktop and stationary ones with an open base design, wheels on legs and the possibility of SKD disassembly for transportation.
Electric motors are often three-phase, with a power of 2 to 3 kW, and the size of 315 mm is taken as the standard for the diameter of the saw blade.
Work tables are also steel galvanized, but the thickness is already 2 mm, and the dimensions are at least 800 x 550 mm.
The geometrical dimensions of the additional table are equal to the main one, which allows it to be quickly reinstalled from the expander to the extension.
Construction specialization means high productivity and less time to set parameters than table saws for the home.

Stationary circular woodworking machines.

Tool diameter is not a key parameter for industrial sawing equipment, so it can be smaller (205 or 305 mm) than for construction models.
The main indicator of a good professional circular is the sawing accuracy up to 0.1 mm along the length of the workpiece. For this, tables, expanders and some of the body elements are made of cast iron.
The advantages include:
– massive construction, smoothing vibration from the motor and actuator;
– powerful (from 2.2 to 7 kW and more asynchronous single-phase and three-phase motors), easily sawn through thick and hard workpieces;
– rigid and high-precision stops and guides;
– fully enclosed casing to reduce engine noise.

Structural elements, features and characteristics.

The simplest home circular table saw consists of a tubular frame to which a work table is welded.
On one side of the frame, control buttons, brackets for the cable and the pusher are installed.
On the other side is a turntable with a fixed brush motor, on the shaft of which a saw blade is mounted without a gear.
The part of the disk protruding above the table is closed from the user by a casing. The lower part is located in a closed compartment that prevents sawing waste from scattering and directs it towards the vacuum cleaner connection.

Adjustment of the lifting height of the rig is not provided in inexpensive desktop circulars for the home, such as the Einhell Home TH-TS 820.
To tilt the cutting wheel, release two latches on the sides of the turntable, control the angle on the scale and clamp it again. When returning to a position perpendicular to the base, the right angle is checked with a square, not focusing on the graduation scale.

Work table for basing workpieces.

It is made of cast aluminum with reinforcing ribs inside, galvanized sheet steel up to 4 mm thick and polished cast iron (maximum wear resistance and vibration suppression).
On a large and oversized one, it is convenient to process large workpieces (door panels, full-size panels, joinery boards) and long boards without the use of supporting roller supports. The free space allows you to install additional fixtures and use the surface for gluing and other technical actions.

Expanders of a table to increase the working surface.

In stationary circular saws, the size of the main table reaches 800 x 610 mm, as on the JET JTAS-12DX. But such a size would create problems with the transportation of construction circulars and would take up a lot of space in the home workshop, taking up the space needed for other work or equipment.
On household and semi-professional devices, work tables are made small, but they create the possibility of increasing the plane for placing wooden blanks using extension cords and expanders (not needed for all works).
The name depends on the position relative to the saw blade: in the direction of travel or perpendicular.
On the best models of circular saws, their material of manufacture and rigidity are the same as on the main table and when unfolded they form a flat surface without steps due to changes in height.

Protective cover to prevent contact with equipment.

Maximum safety for the joiner’s hands will only be ensured when the saw blade is completely closed.
Typically, the plastic shroud is swiveled at the highest point of the riving knife. The end face of its opposite part has a beveled surface. When pushing the board, it does not rest against the casing, but lifts and passes under it.
More technically advanced is the execution when a movable plate is installed on the side, by adjusting which you can close the side plane of the saw equipment from the working side.

An additional chip suction connection on the cover serves for better collection of small sawing waste, for example when working with chipboard.

Insert insert on a circular saw to protect against fiber chipping.

For the possibility of tilting to the side and lifting the cutting disc upwards, a rectangular hole is made in the working table. It is made with a significant margin, with a disc thickness of 1.6-3 mm, the width of the slot can be 30-50 mm, but a plastic or metal insert is installed inside.
Even in a standard liner, the gap on each of the two sides of the disc can be more than 6-10 mm, and then chips and sawdust get into the gap, causing jamming of the equipment and hindering the operation of the turntable and the disc lifting unit.

For both table and stationary circular saws, carpenters independently modify the anti-splinter inserts. Additional equipment, with zero or minimum clearance, allows not only to exclude the ingress of small fragments, but also prevents chips from forming and wood fibers being pulled out when the equipment comes out of the material at the edge.

Riveting knife to prevent kickback when making through cuts.

Do I need to change the blade when changing a saw blade of a different diameter and thickness?

To counteract the closure of the cut, which occurs in the case of the release of internal stresses in the wood (this happens when the board is dried unevenly along its entire length), a flat crescent-shaped part is installed behind the circle, in the non-working sector.
Its thickness is always equal to or 5-10% more than the thickness of the rig, and when it is raised and lowered, it repeats its movement.
Purpose of the riving knife of circular machines:
Ensure the straightness of the board feeding, eliminating the pressure of the workpiece in the side of the saw blade.
Do not allow the board to rise above the table and bounce off to the side when the side non-working parts of the solders come into contact (cut) with its walls.

If the circle changes to a thin one, then the knife stops playing the role of a guiding device, while the resistance increases when the wood is pushed forward and the sawing accuracy decreases.
In the case of replacing the equipment with a model of a larger diameter, some professional circular saws have such an opportunity, the riving knife of the usual one changes. The distance from the rig to its blade should be the same throughout the bordering sector.

Stops and guides for more precision cutting.

In the simplest desktop home circulars, the longitudinal stop is a lightweight aluminum profile along which the board moves, or if the width of the workpiece is less than 120 mm, it is pushed by a pusher.
Its use allows you to get the required number of parts without marking, at a given distance.
The longitudinal stop must be rigid and massive, and the method of fixing it must ensure the cut as smoothly as possible, without deviations, to the very end of the workpiece.
On stationary models, it is not clamped by a threaded connection with thumbs at the edge of the table, but by eccentric pivoting levers to separately installed rails.

The PTFE pads installed on the sidewalls contribute to better sliding and prevent dark marks from forming from contact with aluminum.

A rotary stop with protractor, graduation scale and clamping clip is needed for cross-cutting. It is installed in a special groove on the surface of the table and, having fixed the required angle, into it, or a bar screwed to it, abut the workpiece and hold it with your hands, direct it towards the saw blade. The stop slides smoothly and without jamming along the groove.

Electric motors and drive.

On cheap table saws for wood and some construction models, the equipment is fixed directly to the motor shaft, which simplifies the design.
On the one hand, the machine is quieter and part of the energy is not wasted on overcoming the friction that occurs when the belt turns. But if the motor power is not enough, then when passing knots that are harder than stem wood, biting occurs, the speed decreases and the electric motor is heavily loaded.

On stationary circular machines, the connection between the motor and the cutting unit is always via a belt. This somewhat increases the cost of the design: pulleys, belts, bearings in rigid supports for the saw shaft, mandatory guard panels on the bed. But this way you can change the gear ratio; the drop in speed when passing problem areas will be smooth; and when overloaded, they will slip relative to the pulley.

Saw blade parameters.

When choosing a table saw for wood, first of all pay attention to the outer diameter of the equipment.
Its third part protrudes above the table and the maximum thickness of the workpiece to be sawn depends on this size.

The wheel parameters also affect the kerf and the roughness of the resulting ends. The fewer teeth, namely such cheap discs, are included in the standard set of building circulars, the more hairiness (the number of torn fibers).
A fine rip sawing with a minimum roughness will allow you to get a tooling with the maximum possible number of teeth. So at 300 mm in diameter, their number can differ four times: 24, 32, 48, 60, 72, 100.

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