How to use a circular saw correctly

Assembling the table saw

Assembling a circular saw with your own hands at home is not a very difficult job, you just need to prepare all the necessary parts and tools, choose a structure and follow the drawings and instructions exactly.

The table circular saw is easily assembled from a regular one. The finished fixture will have a compact size.

To do this work, it is necessary to assemble from a thin tube or rod of 18. 20 mm made of metal, the frame to which the lever is attached.

The part of the structure located below must be bent in the direction of the cut. This element is attached to the table with self-tapping screws.

Make sure the device stand is stable. Swinging the saw while working can be very dangerous because any careless movement can lead to loss of fingers or hands.

It is best to make your table out of metal by fixing its legs to the floor.

A lever made from a tube in the shape of the letter “T” should be placed on the cross member. The lever should be free to scroll.

The part is cut across into several sections. After completing the installation of the structure, all elements are connected using clamps.

circular, correctly

A homemade mini circular saw with your own hands is attracted and fixed with clamps to the vertical extreme part.

The assembled circular saw can be used in the home workshop as a cutting tool. Before starting work, insert the cutting wheel into the angle grinder.

To process thick boards, you need to use a full-fledged apparatus. The carriage is used to trim the elements. It is assembled from several beams attached to the base and performing a guiding function.

Having understood how to assemble the device, you need to select materials and tools suitable for the job. At a minimum, you need a working angle grinder and various consumables.

But to assemble the device with your own hands, you need special skills. If you do not have the necessary skill, then it is better to purchase a circular saw, in the correct, reliable and safe operation of which you can be absolutely sure.

The described method allows you to assemble a small circular saw that can be used in a home workshop or your own shed.

Tips and tricks to help you achieve the best results.

Once you’ve gained some experience and are good enough to get started on more challenging and sophisticated work, it’s time to start learning the secrets to help you improve your skills and create masterpieces of wood art. For a safe teacher, a good circular saw can go through any material: foam, plywood, PVC. With a diamond blade, you can even cut stone! Circular saws can be configured for split or beveled cuts and can even replace a table saw in many jobs.

Here are some tips and tricks to keep in mind:

  • Start again if the cut line is lost. Do not try to get back on the line as it will be difficult, especially if you are a beginner. Remove the blade and start over. After a few tries, you will effortlessly cut beautiful straight mowing lines.
  • Don’t use easels when cutting heavy boards. Heavy pieces are easier to cut when in place than cutting into easels. Place the board on your toe and lean towards it, but make sure you cut more than 10 inches from your foot.
  • Avoid pinching To cut leaves, support must be provided to avoid kickback, which usually occurs when the saw blade gets stuck in the cut. When cutting on ramps, be sure to place the saw outside of a pair of ribs. Position the board or sheet so that the longest part does not fall off when cut.
  • Continue cutting to a safe level and avoid cutting above your chest. Otherwise, you will not be able to safely hold the saw. For tasks that require cutting at a higher level, you must raise the hand saw.
  • Watch out for debris. This can happen on the top surface of a board or sheet and can be frustrating if you are driving through expensive forests. To avoid this, place the table with the visible surface down. So in this case, if fragmentation occurs, it will affect the back. You can also mark the line for the cut with a utility knife to help you make a smooth cut. For a nicer appearance, support the board fully so that it does not allow a falling object to attract a shard of wood.
  • Cut the same pieces. If you need to cut multiple pieces of the same size, place the sheets on top of each other and make sure all the edges are aligned. Then hold or secure the stack to prevent it from moving and cut all sheets at the same time.
  • When you need to cut straight line, you can use a metal ruler or wood strip as a guide.

How to use a circular saw: secrets and tricks

That is why those who want to save material resources, as well as show their skills, should.

  • Why three in one, not a separate tool
  • Making a carpentry machine 3 in 1
  • Circular saw device
  • How to use a circular saw
  • What can be done with a circular saw
  • Setting up the circular saw
  • What is a circular saw for?
  • A circular saw. How to cut it
  • Tips and tricks to help you achieve the best results.
  • Assembling the table saw
  • What discs to take
  • Miter box for circular or do-it-yourself trimming.
  • Read:
  • How to increase the service life
  • Assembling a complex machine
  • Tenoning device

What discs to take

The saw blade is the most important part of the circular, the working body for which it is made. The entire design of the machine is also tied to it, so you need to decide in advance which discs we will use in work, and how to choose the one you need in absentia (online) according to the designations on it or in the description.

Saw blade types and designation systems

The most common are 2 notation systems. According to the first (item A, pos. 1 in the figure), the following are sequentially indicated:

  • diameter of the disc at the tops of the teeth, mm;
  • cutting width, mm;
  • mounting (landing) hole diameter, mm. Typical (default) tolerance of 0.05 mm is not specified;
  • atypical landing tolerance (possible);
  • number of teeth;
  • with the letter T or with a pictogram. the presence of hard-alloy soldering on the teeth;
  • rotation speed. operating (nominal) just in numbers, the maximum allowable with the prefix max.

According to the second system, it is necessary, in numbers separated by hyphens, to indicate the size of the disc: diameter at the bases of the teeth, their number, and the bore diameter (the default tolerance is the same). For example, 190-36-30 in item B pos. 2 means a disc with a diameter of 190 mm (there will be 200 at the tops of the teeth) with 36 teeth for a fit of 30 mm. The speed is indicated separately, but here it is the maximum by default; working 10% less. The rest of the parameters are indicated either by symbols (item B, pos. 2) or textually. The minimum rotational speed at which the proper cut quality is still ensured for certified discs with stabilizing slots (pos. 1, 2, 4, 5) is 50% lower than the working speed, and for solid discs. 25% less.

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There are quite high-quality “off-system” disks on sale (pos. 3-5). But in all cases, simply “on wood” (pos. 2-4) denotes the corresponding TU industrial wood, plywood, chipboard, laminate, etc. sufficiently high-quality wood materials. Sawing with such a disc an unseasoned raw tree is dangerous. it can jam and fly apart. For cutting wild wood, special discs are produced with the designations Forest (forest, pos. 5), Wildwood (wild tree), Timber (timber), Log (log), etc. Discs with such designations are used in stationary pendulum saws, circular sawmills and other equipment for sawing raw wood.

Finally, many unmarked saw blades go on sale, pos. 6 in Fig. In general, they saw, but with them you need to be more careful: the linear speed of rotation of such a disk is better not to give more than 40 m / s. To get the rotational speed from it (for calculating the gear), we measure the diameter of the disc at the bases of the teeth D (in mm), and calculate its working rotational speed as 60 (40,000 / (3.1415xD)). For example, the working speed of rotation of a “turbid” disk by 200 mm will be 3815 rpm; better take 3500.

What can be done with a circular saw

The principle of operation of this unit is based on the rotation of the cutting disc by an electric motor. The saw design is presented in two versions: manual or stationary. An important difference between these two versions is that the force from the engine to the disk in the stationary model is transmitted through the belt, while in the manual model the disk itself is fixed on the shaft. The saw can cut wood both along the fibers and across them, cut out a quarter. The tool can be used to saw off soft metal, plastic, if you use special discs.

How to use a circular saw

How to work with the tool correctly:

  • When working, do not use clamps, vices, or other methods of rigidly securing the workpiece. It is unacceptable to hold it with your hands or body.
  • Do not overload the tool by doing work that is not intended for it.
  • If the on / off key is broken, do not use the tool.
  • When changing accessories, making adjustments and other work, the tool must be disconnected from the power supply.
  • Storage of the tool should be done in places that are hard to reach for children and pets.
  • Remember to periodically service your tool.

This design has two main disadvantages:

  • To adjust the accuracy of sawing wood with a broaching machine, you need to use wood trimmings. After that, the traction can be firmly fixed and work normally;
  • Such a self-made installation with a broach when cutting pipes and working on metal makes a lot of noise, which can negatively affect at least the mood of your neighbors.

A circular saw. How to cut it

The main stages of working with the tool:

  • Set the minimum depth of cut by adjusting the blade downward.
  • Fit the guide to the size of the part by measuring the length from the edge of the blade to the edge of the foot. Mark up the material.
  • Make the initial cut 3-5 mm.
  • Continue sawing without stopping all the way through the blade.
  • Use duct tape at the cut to avoid chipping.

Remember that the saw is a hazardous tool, and for comfortable and safe work, you should carefully study the safety precautions when working with the tool.

About the quality and result of work

Everyone loves that the work was done conscientiously. How to work with a circular saw correctly and achieve a high-quality result?

Pay attention to the longitudinal and lateral balance of the saw. The cutting efficiency is directly dependent on the correct balancing of the machine. Any misalignment causes inconvenience, stress and severe fatigue during work.

The quality of the disc sharpening also greatly affects the process of work. This is especially true for low-power models. You can sharpen a disc in many places, the main thing is to do it before starting work.

The need for sharpening is determined at a number of points:

  • during work, it is required to apply more forces than usual (this is not drinking water);
  • the edges of the cut begin to burn;
  • frequent engine overheating.

If you let this moment take its course, then the breakdown of the tool is not far off. This will be eloquently indicated by the smoke coming from the saw and the smell of molten insulation.

Benefits of electric circular saws

There are models of saws that, during operation, control the load of the tool, protecting it from overheating, and are able to control the speed of the mechanism.

Most circular saws are equipped with an overload indicator and their motor brushes. Replacing discs is very safe due to the built-in quick braking system and blocking the engine of the device.

A number of electronic saws allow the sawing to measure the number of revolutions while the blade is moving. This function allows you to work not only with wood, but also with plastics and some soft metals.

advanced models are equipped with an electronic soft start system. Thanks to her, such tools quickly gain momentum at an even speed.

It is very difficult to get injured in this case, since such models have a protective cover from the saw teeth. He smoothly, without twitching, moves away from the disc during the start of work. A number of some tools of this kind are equipped with a pendulum cover and an infeed roller.

Many models used for both professional and household work are equipped with special outlets for connecting a vacuum cleaner. Despite the decrease in maneuverability, such a tool lasts longer, since the number of negative factors is significantly reduced.

Types of circular saws

For domestic needs, manual options are quite suitable, capable of transverse, longitudinal and oblique cuts. They are distinguished by their maneuverability, lightness and relatively low price.

A number of models allow you to cut not only from the end, but also anywhere thanks to the special plunge function. Due to the ability to tilt relative to the slab, such models saw the material at different angles.

The base plate of such a tool is made by a stamped method (suitable for domestic purposes) or cast (for a professional tool).

For large volumes of work, you will need a stationary circular saw with a box-type bed. They have been used before. Modern models are made very compact, which allows them to be placed on work surfaces, for example, workbenches.

For professionals, more massive tools are needed, which are placed directly on the floor of the room. They are able to influence the cutting depth thanks to the movable work table. The disc remains stationary during operation. Thanks to this, the possibilities of the circular saw are greatly expanded.

If the work is often carried out with variable load, then combined options are suitable. They differ from manual ones in that there are special mounts in their case, which make it possible to work stationary on any horizontal surface. In this case, the saw is fixed with the disk up.

HOW TO USE THE CIRCULAR SAW CORRECTLY

Thoughts about purchasing a circular saw arise when a large amount of work is required to cut a bar or planks along the material. Of course, you can use a hacksaw or jigsaw to loosen the boards if you want. The masters will masterfully cope! However, if cutting with straight lines is required, then a circular saw is required for such work. This power tool is used for cutting wood as well as plastic and soft metal.

It would seem that the question of how to use a circular saw is quite simple and the answer is clear. However, not all so simple.

What you need to know about the circular saw?

Circulars are simple. They consist of a base plate and a saw itself. The base plate is constructed from aluminum alloy or stamped steel plate. There are three types of circular saws: stationary, hand-held and combined.

Before starting work, the maximum cutting depth should be determined. This moment is the main criterion when choosing a hand saw. It makes sense to ask for what purposes a tool is needed: for professional or for household needs?

Also in this case, the size of the tool matters. Generally, a medium-sized circular saw is preferred for its agility and ease of use. For a significant amount of work associated with clapboard and thin boards during the construction of a house, a stationary large-sized circular saw will be required. Smallest tool suitable for thin rods.

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A single-phase circular saw with a power of 220 W can easily cope with summer cottage and household work.

For large volumes, three-phase instruments (380 W) will be required. According to safety rules, they must be grounded.

A little about the available teeth

When choosing a saw for the job, the characteristics of the teeth must be taken into account. This is necessary because a specific material requires its own type.

Circular saw blades with standard teeth are used for soft woods and plywood.

For hard rock or chipboard, special carbide teeth are suitable. In addition to the special shape and more, they have victorious soldering.

For chopping work, such as ripping boards, a disc with a small (up to 24) number of teeth is suitable. The smaller there are, the larger their size. Accordingly, the blade will cut faster, but the cut will be rough.

For fine cutting, discs with teeth up to 36-48 units are suitable. Working with hardwood material or planks with nails will require 54 trapezoidal discs.

The inclination of the teeth can be positive, such that it cuts wood. A disc with a negative tilt is used for clean cutting of aluminum and plastic.

Features of the work itself

It would seem that it is so easy to work with a hand-held circular saw, but you need to acquire skill and be careful.

  • Sawing depth. When working with a circular saw, set the cutting depth equal to the thickness of the board. For the groove, it should be made slightly smaller. In addition to safety considerations, this way the board can be cut on a workbench without being damaged.
  • Lower protection casing. When working with a saw blade, it should be borne in mind that the cover will open itself if nothing interferes with it. Therefore, if the board is placed on a workbench, then opening the casing “automatically” will not work, or it will work, but with injury and damage to the material. The best option in this case is to manually swing the protective cover to the side. Then prepare for safe use by holding the saw with the tip of the guard retainer and with your left hand. Be sure to think about how the saw and the material will work when working.
  • Work at the workbench. In this case, the board is placed on a workbench. Further, according to the mark, the front end of the saw base plate is aligned and tightly pressed against the material. Before turning on, its back should be slightly raised so as not to touch. After that, the saw turns on, the speed is gained, and the board is sawn.

The best option would be to slightly push the edge of the board over the edge of the workbench.

Hand saws have a “riving knife”. It is needed in order to prevent the disc from being clamped. It also prevents the disc from “crashing” into the board during the return stroke.

Circular saws have a function such as a guide or rip fence. It allows you to cut exactly, strictly according to the markings.

Fixation. When working with a hand saw, any workpiece must be secured. Work becomes meaningless and even dangerous if it moves with the saw or moves to the side. Specially installed stops on the workbench will help in this matter, preventing the board from sliding to the side and forward.

Before sawing, you should mentally carry out the process and make sure that everything will happen smoothly, without interference.

Wiring. Handle power tools with care. Do not overheat the motor. Rest the saw.

After completing the cut, raise the saw up. In this case, the disc must be covered with a casing and be in the “away from you” position. The instrument should be laid down after checking for a complete stop of the disc and its cover. It is advisable to consolidate these simple skills to the level of a reflex.

And finally: you should not buy Chinese products and self-sharpening saws. Choose the proven and well-known domestic and foreign brands of circular saws with excellent quality!

How to work with a circular saw?

A circular saw is a special equipment designed for even cutting of boards or wooden beams. The use of the device requires some knowledge and skills. To understand how to use a circular saw, you should familiarize yourself with its principle of operation and operational capabilities.

Stationary models

The use of circular machines has its own operational features. To cut wood you need:

  • Set the switch on the equipment to the off position. Only then can the cable be connected to the electrical network.
  • Raising the handle, adjust and fix the cutting height of the disc according to the size of the material prepared for cutting.
  • Check the position of the guide bar and saw blade. Their arrangement must be parallel to each other.
  • Start the circular saw and make a longitudinal cut of the wood material. Sawing one board should be done in a single approach.

Using a stationary circular saw

After processing all the material, turn off the switch on the equipment, which stops the rotation of the blade, and disconnect the tool from the mains.

Hand circular saw

These electric saws are designed for precise, straight cutting of thin wood materials. The handheld circular device is small in size and is most often used for home use.

Small-sized equipment for sawing wood is necessary for the interior design of houses. Often, hand-held circular saws are used during renovations to cut laminate or wall decoration material.

Nuances of additional functions

Modern models of circular saws are safe equipment with high technical parameters. Many devices are equipped with additional features that make your workflow much easier:

  • Slip clutch. Such a device avoids injury when the disc is jammed. The clutch can significantly reduce the shock when the rotating mechanism stops.
  • Smooth start. This feature allows the disc to pick up speed without jerking. Soft start protects the mechanism from jolts, which has a positive effect on the operating life of the engine.
  • Overload protection. When the engine reaches critical indicators, the mechanism is automatically turned off.
  • Support for the required disk rotation speed. Power is automatically added under load when cutting dense materials. This function protects against a decrease in the disc speed.
  • Accelerated braking. The disc stops abruptly when the shutdown button is pressed.
  • Lock start buttons. This function prevents the instrument from turning on if the switch is accidentally pressed. It is usually installed by simultaneously pressing two keys.

Types of jobs

The scope of the circular saw depends on its size and type.

Circular machine

Stationary circular saws are equipment for daily use. Such professional machines are capable of processing a large amount of wood per day. They are quite heavy. over 10 kilograms and high power up to 2500 watts.

Circular machine

Circular machines are used mainly in production for industrial purposes. The cost of such a device is quite high. Some small models of circular equipment also have the function of stationary use. They are successfully used in home workshops.

Algorithm of operation

Hand and stationary circular saws have a similar working principle. But hardware management has some differences.

Setting up the circular saw before work

Before you start sawing, you need to install the blade and make sure it is firmly held in place. The cover should open and return to its original position without any resistance. It is also worth checking to see if the riving knife is properly positioned. Then run the saw in idle mode for 10 seconds to make sure it is working properly.

To set up the circular saw, you need to adjust the required position of the guide pin and cutting blade using a vernier caliper. When checking the position of the teeth in front and behind the disc, the difference should not be more than 0.05 mm. You also need to install the riving knife and blade so that they are on the same line. For their precise adjustment, special washers are used. The fixing bolts must be tightened well to keep the tool and table less vibrating.

How to cut a board straight with a circular saw

Unlike a stationary pendulum saw, it is more difficult to make a straight cut with a circular saw. This will not be a problem if the board or timber is narrow, but to cut a wide workpiece or when cutting longitudinally, you need to know how to make the cut as accurate as possible. To do this, you need to adhere to the following sequence of actions:

  • There should be nothing under the piece of material that you will be sawing. The circular saw blade should not cut anything else. For example, never place your board on a concrete floor. use trestles or a saw table instead.
  • Mark the line along which the saw blade should go. Use a tape measure, ruler or square for this.
  • Adjust the cutting depth. The blade should barely protrude beyond the workpiece. For example, if the thickness of the workpiece is 40 mm, the cutting depth should be 45-50 mm.
  • Check the condition of the guard. It should rise gently when the saw is lowered onto the workpiece, and immediately close the working part when it is raised.
  • When starting to cut, look at the front right edge of the blade and align it with the mark on the material.
  • Look at the right guide of the circular saw for right angle cuts, and the left guide for 45 degree cuts.
  • Start cutting the material. Watch the guide at all times to make an even cut.
  • Keep the saw base flat on the material at all times.
  • Push the saw hard enough to cut, but don’t push too hard to overload the engine. The hardest woods should be cut with minimal effort.
  • After finishing cutting, make sure that the guard is back in the closed position.
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Circular saw safety

Circular saws have a relatively high risk of injury, therefore safety precautions must be followed when working with them.

Correct operation of the circular saw

The hand-held circular saw is one of the most important tools in the woodworking industry. It significantly increases the speed of working with wood or plastic, sheet material, planks and timber. It is most commonly used for cross-cutting, but it can also be used for sawing along the grain of the wood. In this article, we will tell you in detail about the range of use of circular hand saws, setting them up before work, work techniques and safety rules.

Preparing the workplace for work

It is necessary to remove all unnecessary items from the desktop. There should be no tools, keys or consumables. In addition, you need to provide a free approach to the table. The floor in the work area must be dry to avoid accidental slipping. The machine must be grounded.

HOW TO USE A CIRCULAR SAW FOR BEGINNERS- PART 1

There are also requirements for the operator’s work clothes. Clothes need to be tucked in so that there are no fluttering ends. If you have long hair, pick it up and hide it under a hat. Wear safety goggles and a respirator. Wearing ear protectors is recommended as the noise level can be quite high when working with a circular saw.

Before starting the saw, you need to check it for defects in the saw blade, make sure that it is secured properly. Check if the riving knife is installed correctly, and then check that the guard is working properly.

If your saw has a short cable, you may need an extension cord to help you navigate the work area comfortably. It is advisable to use a circular saw with a soft start function so that the tool does not jerk when starting.

What can be done with a hand-held circular saw

Manual circulars are suitable for a whole list of jobs:

  • facing several wooden blanks at once, which lie in the same plane;
  • trimming wide boards, for which a pendulum saw cannot be used (you will need a parallel stop);
  • trimming boards when laying floors;
  • facing workpieces at an angle (you can use a guide or do without it);
  • longitudinal cutting of workpieces at an angle;
  • sampling a quarter in a board or bar;
  • cutting sheet materials using a guide;
  • cut of organic glass and plastic;
  • using the hand saw as a stationary saw by mounting it to the table.

Safety tips when using the saw

Before starting work, run the circular saw with no load. As you cut the material, observe the following rules and recommendations:

  • When starting work, you should stand on the left side of the machine so that if the workpiece is accidentally thrown out, it will not hit you.
  • Make sure there are no nails, pins, pieces of dirt or concrete in the workpiece or on the surface of the workpiece that might interfere with the cut.
  • It is forbidden to transfer objects over a working circular saw.
  • If there are knots or cracks in the wood, drive the saw more slowly when approaching them.
  • When changing the saw blade, be sure to unplug it.

How to use a circular saw

How to work with the tool correctly:

  • When working, do not use clamps, vices, or other methods of rigidly securing the workpiece. It is unacceptable to hold it with your hands or body.
  • Do not overload the tool by doing work that is not intended for it.
  • If the on / off key is broken, do not use the tool.
  • When changing accessories, making adjustments and other work, the tool must be disconnected from the power supply.
  • Storage of the tool should be done in places that are hard to reach for children and pets.
  • Remember to periodically service your tool.

What is a circular saw for?

It is designed to cut softwood and hardwood boards with a moisture content of no more than 50% and a thickness of no more than 64 mm. It is allowed to cut plywood, aerated concrete, chipboard, asbestos-cement and cement-particle boards.

Circular and circular saws as indispensable helpers in your farm. How to saw and tune the tool?

The forerunners of modern automatic saws were tools made of stone, bones, on which jags were applied from one edge. The beginning of this instrument was laid in the fourth millennium BC. They are used both in household work and in the creation of various works of art.

Then, stone and bone were replaced by copper, iron, steel. The first power saws appeared in Germany in the XXIV century. Electric saws became widespread only in the 20th century.

Setting up the circular saw

Before starting work, you should:

  • put the disc;
  • make sure that it is securely fastened;
  • make sure that the protective cover opens freely and returns to its original position when the handle is released;
  • check the correct installation of the riving knife;
  • make sure the saw is working properly by holding it in the on mode for 10 seconds without load.

It is quite easy to adjust the saw before starting work. This requires:

  • Adjust the position of the guide slot on the table and disc using a caliper, aligning the guide slots on the blade. When checking the tooth in the front and back of the blade, the difference should not exceed 0.05 mm
  • Check the parallel stop with a groove or slot. Here the offset should also not be more than 0.05 mm.
  • Make sure to align the riving knife with the blade so that it is on the same line as the blade. In case of mismatch, a more accurate adjustment is achieved by rotating the washers
  • Tighten the mounting bolts securely to protect the table and the machine from vibration

What can be done with a circular saw

The principle of operation of this unit is based on the rotation of the cutting disc by an electric motor. The saw design is presented in two versions: manual or stationary. An important difference between these two versions is that the force from the engine to the disk in the stationary model is transmitted through the belt, while in the manual model the disk itself is fixed on the shaft. The saw can cut wood both along the fibers and across them, cut out a quarter. The tool can be used to saw off soft metal, plastic, if you use special discs.

A circular saw. How to cut it

The main stages of working with the tool:

  • Set the minimum depth of cut by adjusting the blade downward.
  • Fit the guide to the size of the part by measuring the length from the edge of the blade to the edge of the foot. Mark up the material.
  • Make the initial cut 3-5 mm.
  • Continue sawing without stopping all the way through the blade.
  • Use duct tape at the cut to avoid chipping.