Sawing logs into boards with a chainsaw: - DIY installation instructions, cutting features, how to cut them at home, price, photo. Device for sawing logs with a chainsaw: learning how to make it yourself Longitudinal sawing of logs used

Sawing logs into boards with a chainsaw is the most convenient and quick way. With the help of special attachments and devices, independent production of almost smooth boards is ensured, the quality of which is in no way inferior to those produced industrially.

Attachments for sawing logs

Chainsaw - convenient universal tool in homestead farming. First of all, you should take into account that it has great power and compactness. Thanks to the centrifugal clutch, all systems and components of the mini-engine operate without overload for a long time; Power makes it possible to install any attachments. The chainsaw can be used in any position and in any terrain, since it is autonomous and has a diaphragm carburetor.

How to adapt a mechanism for cutting logs into boards? To do this, just install the appropriate attachments on the chainsaw.

To cut a log along its entire length, a nozzle for longitudinal sawing of logs in a horizontal plane is suitable. Thanks to it, the boards are of the same thickness. After the necessary proper drying, they are suitable for construction. The attachment is a small frame that is attached to the tire on both sides.

In addition, there is a lightweight nozzle that is fixed on only one side. As a result, the boards are not as smooth as in the first case. Fences and sheds are built from such boards.

An auxiliary tool is a drum debarker-finer.

With its help, logs can be easily cleared of bark.

The nozzle is a drum, works thanks to a V-belt drive. It is attached to the moving belts using special pulleys on both sides of the axis. By selecting the diameter of the pulley, you can select the optimal shaft rotation speed.

Sawing logs lengthwise

To obtain straight cut, you need to install a guide. It can serve as an industrial mini-sawmill. But such devices are expensive and not everyone can afford them. Therefore, logs are usually fixed homemade holders from boards with the same guide.

Sawing of logs into boards is carried out with a chain for longitudinal cutting. If there is none, a regular chain, sharpened at an angle of ten degrees, will do. Only in the process of work will you have to sharpen it from time to time. An attachment is installed on the chainsaw - a guide frame for an even cut.

To cut a log lengthwise, you must perform the following steps:

1. Make a leading line. To do this, you need to fasten two straight long boards at an angle of 90 degrees.
2. Place the log on the stops, thus fixing its position.
3. Attach the nozzle.
4. Using self-tapping screws, attach the supports to the ends of the log on both sides. Check horizontality with a level.
5. Attach the leading ruler to the supports with self-tapping screws.
6. Install another support board horizontally, which should rest against the ground and slightly lift the log.
7. Using a chainsaw with a horizontal cutting attachment, cut off the first piece of log.
8. Move the guide ruler and fix it.
9. Make a second cut of the log perpendicular to the first.
10. There is no need to use the leading ruler any further. The resulting board will serve as a guide.
11. Determine the thickness of the cut using the frame.
12. Make the next cut perpendicular to the second. The result should be a piece of wood, the underside of which is covered with bark.
13. Make a fourth cut to separate the remaining part of the wood that contains the bark. You will get an almost perfectly even block of wood.
14. Next, cut the block to the middle.
15. Turn it over to the opposite side and continue cutting until the end.

If the thickness of the boards does not matter, cutting off the edges with bark is not necessary. In this case, you can use an edger and cut into boards from the very beginning.

Making cross cuts

Cross sawing is used to cut logs into firewood, as well as to create cross-cut wooden disks for construction garden benches, decorations garden paths and so on.

Cutting a log crosswise is done as follows:

1. Place the log horizontally on wooden supports 0.5 m high.
2. If necessary, you can clear it of bark.
3. Using an ax or saw, make marking cuts at equal distances from each other.
4. According to the marks, cut the log.

Special attachments and chains are not needed for this work. A regular chain will do.

Maintaining safety during work

To avoid operational failures and accidents, safety precautions should be observed when working with materials and tools:

1. When working, do not allow strangers, especially children, onto the work site.
2. During work, you should use protective equipment against noise and sawdust that fly away during cutting.
3. You should carry a first aid kit with everything you need to use in case of cuts.
4. When using a circular saw, it is necessary to put on a protective guard.
5. Do not pour gasoline into a heated tank of a chainsaw.
6. Use the chainsaw only for its intended purpose, do not turn it on at full power if it is not in operation.
7. There is no need to press hard on the saw while working.
8. The log for cutting should be installed on the right side.

A chainsaw serves as a convenient tool that can be used for self-production boards It is suitable for use in household plots where it is necessary to repair or build new outbuildings. In such cases a large number of no boards required. Therefore, they can be easily cut from any logs in required quantity. Once you acquire the skill, the work is done quickly, and the quality of the boards is excellent.

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Boards are actively used for various construction and repair activities. This material can be made independently from any suitable log using a regular chainsaw.

Chainsaw - a universal summer resident tool

A chainsaw, often also called a chainsaw, is a chain-powered hand tool equipped with a two-stroke (in most cases) engine. internal combustion. This popular mechanism is indispensable in any homestead. The chainsaw is compact and yet powerful. It works without breakdowns for a long time in autonomous mode, due to which it can be used in any location and in a position convenient for the user. The chainsaw has other advantages:

• Equipped with mechanisms for selecting operating speed and smooth starting. This reduces the risk of chain breakage to a minimum.
• Can be used in high humidity conditions.
• Does not require electrical energy.
• It is characterized by high power indicators (noticeably greater than those of a power tool).
• Has a quick-acting inertia brake.

Main advantage gasoline saw– the possibility of equipping it with various attachments. It is they who make it universal, indispensable for home handyman, tool. Using a chainsaw, you can saw logs, cut stone, metal, brick, tiles building materials, removing bark from wood, cutting out mounting grooves and various recesses in the bars.

The functionality of the tool can be expanded even further, the main thing is to choose the right attachment or equip it with a special device.

We will not describe all the capabilities of the chainsaw. In this article, we are only interested in the issue of sawing logs using a chainsaw. More on the features of doing such work with your own hands.

Attachments and accessories for sawing – the home craftsman will appreciate them!

Cutting a log with a gasoline saw can be done after it has been completed different types devices and special attachments. Get relatively smooth boards from the trunk of an old dried tree on your summer cottage It’s not difficult if you install a standard attachment for longitudinal cutting of wood on your chainsaw. Important point. You won't get perfect boards when using this attachment. But the cut products can be used to build a fence around the site or a simple shed.

It will be easier to cut a log more efficiently if you add a holding device to the nozzle wooden blank and guide. You need to mount a metal frame on the saw bar. It is sold in construction stores. If desired, you can actually make it yourself, using legs from an old school desk or regular metal corners. The distance between the tire and the frame is adjustable. Due to this, it becomes possible to saw logs into boards of different thicknesses.

If the tool will be used stationary, the chainsaw guide is made of smooth wooden block either from metal profile. It should be as tough as possible. The ends of the homemade guide are mounted on sawhorses. And then a log is placed under this structure for sawing. The process of processing it will occur quickly and without unnecessary labor costs.

It is worth noting that the described technique is used exclusively for cutting trunks of small length. If you take a longer log, the guide will begin to sag. As a result, the trunk cannot be cut efficiently and evenly.

We take a log and get boards from it!

Impeccably even cutting is obtained by using a leading ruler (a special guide is often used instead), which is usually called a straight template. It is, in fact, a small machine recommended for cases where woodworking is done more or less regularly. Such a miniature sawmill for longitudinal sawing costs from 10 thousand rubles. If you use it “once every hundred years”, it is better to do as described above.

Both the factory device and the DIY design cut logs according to the same pattern. Longitudinal cutting is carried out using a special chain. Finding her can be difficult. But there is a way out. Sawing trunks lengthwise can be done with a regular chain. You just need to carefully sharpen it at a 10-degree angle. Important point! The tool quickly loses its original sharpness during use. Therefore, it must be constantly sharpened so that cutting logs into boards does not cause difficulties, and the geometry of the resulting products meets the stated requirements.

Sawing logs into flat boards with a chainsaw equipped with a device is performed as follows:

1. 1. Take two straight and strong boards. Connect them at right angles to each other. The result is a reliable straight template.
2. 2. Make simple supports from wooden blocks. Use them to support the template you made.
3. 3. Place the barrel on the device.
4. 4. Fasten the frame to the tire, attach the supporting elements supporting the leading ruler to the ends of the log. The last operation requires horizontal installation. Use building level for control.
5. 5. Secure all existing elements with self-tapping screws. Some craftsmen use nails for these purposes, which is undesirable. After cutting the logs into boards, you will have to remove the used fasteners. It will be difficult to do this without significant damage to the structure.
6. 6. Fix the template to the supports and adjust its height. Nuance. The cut will go somewhere 10 mm above the level of the ruler, and not strictly along it. Take this into account when adjusting the height.
7. 7. Rotate the log. Turn on the chainsaw. You make the first cut.

Then you need to free the log from the stops and boards, fix the template on the cut surface so that it faces in the direction of the second cut. The ruler can be attached with supports to the ends or directly to the surface of the barrel. Make a second cut. In relation to the first, it will be perpendicular.

Next, turn the log and fix it. The ruler can be removed. We will carry out further sawing without it - one of the cut sides of the trunk will serve as a guide. You need to adjust the thickness of the cut on the frame, saw off the log to get a beam with bark on only one side. Now turn the barrel again. Set up the frame. You carry out the final sawing and get the boards at your disposal. If their width is not important to you, there is no need to cut the trunk to fit the timber. Simply saw the workpiece to the middle, turn it 180°, then continue the operation you started.

We cut the trunk across - there will be no difficulties!

As you can see, longitudinal sawing with a chainsaw is a rather labor-intensive process. If you want to get logs by sawing the trunk crosswise and then make boards from them, the operation will be impractical due to the large expenditure of effort. Most often, cross cutting is used when it is necessary to make country wood outdoor furniture- tables, benches, small benches. It is also recommended for preparing firewood and for decorative design using sawn logs. In such situations, logs are cut into disks of small thickness (up to 15 cm).

The cross cutting process is as follows:

1. 1. Place the trunk on trestles 70–80 cm in height (they should be as stable as possible).
2. 2. Remove the bark from the wood, if any.
3. 3. Make a small cut. It will play the role of a guide groove.
4. 4. Rotate the barrel being processed 90°. The tire of a power tool must run strictly along the intended groove.
5. 5. If you need logs, make notches on the tree with an ax.
6. 6. Sawing the trunk.

Transverse and longitudinal cutting of logs must be carried out in compliance with safety standards. It is advisable to carry out work in thick clothing, gloves, glasses, and headphones. Prepare a first aid kit in advance - a chainsaw is a potentially unsafe tool that can cause serious injury to a person. Always move the saw forward along the guide and do not try to push it harder. The tool should move freely.

The chainsaw must not be raised above the shoulders. The tool must only be run on the ground. In this case, the chain brake must be in the engaged state. Its release is carried out just before the start of cutting logs. Do not fill the gasoline container if the saw has recently been used. You should wait until the tool and fuel tank cool down. Take care to carry out work safely. And then sawing up tree trunks on your own will not lead to dire consequences. Good luck.

Chainsaws. the most convenient and fastest way. Thanks to special fixtures and fittings, the independent production of almost flat circuit boards is possible, which is in no way inferior in quality to those produced industrially.

Sawing nozzles

Chainsaw. convenient universal tool backyard. , it should be borne in mind that it has great power and compactness. Thanks to the centrifugal clutch, all systems and components of the mini-engine operate without overload for a long time; power allows you to install any nozzle. The chainsaw can work in any position and on any terrain, since it is autonomous and has a diaphragm carburetor.

How to adapt a mechanism for sawing logs into boards? To do this, just install the appropriate attachments on the chainsaw.

To cut a log along its entire length, the attachment is used for longitudinal sawing of logs in a horizontal plane. Thanks to this, the boards are made of the same thickness. After the necessary proper drying, they are suitable for construction. The nozzle is a small frame attached to the tire on both sides.

In addition, there is a lightweight nozzle that only locks on one side. As a result, the boards are not as flat as in the first case. Fences and sheds are built from these boards.

Read also

The auxiliary tool is a drum-shaped trimmer.

With its help, magazines are easily cleared of bark.

Nozzle. This is a drum, it works thanks to a V-belt drive. Special pulleys are attached to the moving belts on both sides of the axle. By choosing the pulley diameter, you can choose the optimal shaft rotation speed.

The saw goes along

To get a smooth cut, you need to set the guide. This could be an industrial mini-sawmill. But such devices are expensive and not everyone can afford them. Therefore, logs are usually fixed with homemade board holders with the same guide.

Sawing on boards is carried out with a chain for longitudinal sawing. If there isn't one, a regular chain that is pointed at a ten degree angle will do. From time to time he will have to go through only in the process of work. The attachment is installed on the chainsaw. guide for smooth cutting.

Device for sawing logs into boards chainsaw.

Slitting carriage logs

Description of homemade devices for longitudinal cutting chainsaw logs, which is in home conditions.

To cut a magazine, you need to do the following:

1. Make a leading ruler. To do this you need to secure two straight lines boards at an angle of 90 degrees.
2. Place the magazine on the stops, thereby fixing its position.
3. Attach the application.
4. Using self-tapping screws, attach the supports to the ends of the log on both sides. Horizontal level check.
5. Guide the ruler using the screws to attach it to the supports.
6. Place another support board horizontally, which should rest on the ground and raise the log slightly.
7. Using a chainsaw with a horizontal sawing attachment, we sawed off the first part of the log.
8. Move the guide ruler, correct it.
9. Make a second log cut perpendicular to the first.
10. The further line cannot be used. Guidance will be received.
11. Determine the thickness of the saw according to the frame.
12. Make the next cut perpendicular to the second. The result should be a piece of wood, the underside of which is covered with bark.
13. Make a fourth cut to separate the remaining wood that is barking. You will get almost perfect flat piece tree.
14. Next, cut the bar down to the middle.
15. Turn it to the opposite side and continue cutting until the end.

Read also

If the thickness of the boards does not matter, cutting edges with bark are not needed. In this case, you can use the wing and make cuts on the boards from the very beginning.

Intersection

Crossing is used for sawing logs for firewood, as well as for creating transverse wooden disks for the construction of garden benches, decorating garden paths, etc.

Log cutting is done as follows:

1. Set the log horizontally to wooden supports 0.5 m high.
2. If necessary, you can peel it off the bark.
3. Using an ax or saw, make marks at equal distances from each other.
4. Tagging, cutting out magazines.

Special nozzles and chains are not needed for this work. Suitable chain.

Maintaining safety while working

To avoid failures and accidents, you must follow safety precautions when working with materials and tools:

1. When working, do not allow strangers were part of work area, especially children.
2. While working, you should use protection from noise and sawdust that is thrown during cutting.
3. You should have a first aid kit with everything you need to use in case of cuts.
4. When using a circular saw, it must be equipped with a protective cover.
5. Do not pour gasoline into a hot chainsaw tank.
6. Use the chainsaw only for its intended purpose and do not run it at full power if it is not working.
7. Do not press the saw too hard while working.
8. The log for sawing should be installed on the right side.

Chainsaw. This handy tool, which can be used for self-production of boards. It is suitable for use on a private farm where it is necessary to renovate or build new outbuildings. In such cases, a large number of boards are not required. Therefore, they can be easily cut from any logs of the required size. Once you get the hang of it, the work gets done quickly and the quality of the boards is excellent.

Take saws away from humanity and progress will stop. This statement is not a joke. Without a tool capable of cutting wood and metal, concrete and stone, it is impossible to function industrial enterprises and other areas of commodity production.

IN household I also can’t do without saws. Every man has at least one hacksaw, and good master you can find a whole arsenal of “toothed helpers”.

We will look at the most common types of saws to get an idea of ​​their operating capabilities and application features.

It all started with a simple hacksaw

This saw is the ancestor of the family hand tools, intended for wood processing. As soon as the first ingot of iron was smelted, a person had the idea to forge a tool from it for cultivating the earth.

It can be assumed that the ax became second after the hoe. The third was probably a saw with a handle, known to us today as a hacksaw. Over the centuries since its invention, it has acquired numerous “brothers and sisters” performing dozens of different jobs.

The accepted classification divides this type of hand saws into two groups:

• Wood saws;
• Hacksaws for metal.

Depending on the cutting direction hand saws woodworking are divided into three categories:

• For rip sawing cutting;
• For cross cutting;
• Universal (longitudinal-transverse).

The difference between them is in the shape of the cutting teeth: on a rip saw they are inclined forward, while on a cross saw they are straight.

The universal hacksaw tooth is also inclined forward, but has a special sharpening. It allows you to cut along and across the fibers.

According to their purpose, hand saws are divided into several types:

• Classic hacksaws (transverse or longitudinal cutting);
• Circular saws (for cutting holes);
• Tenon saws (for cutting connecting tenons).

When choosing hand hacksaw An important role is played not only by the shape, but also by the size of the teeth.

There are three types of incisors:

• Fine tooth – 2.0-2.5 mm (for high-precision sawing and cutting small products);
• Average tooth – 3.0-3.5 mm (for medium-sized parts);
• Large tooth – 4.0-6.0 mm (for rough cutting of timber and logs).

The international classification divides hacksaws not by the height of the teeth, but by their number per 1 inch of cutting blade. This standard has taken root here too, so don’t be surprised if you see the letters PPI or TPI on the instrument label. The number behind them is the number of teeth per inch of length. The larger it is, the finer the tooth (for example, PPI 8 or TPI 14).

Today you can see a modernized type of hacksaws on the market. They are easily distinguished by the gaps cut into the canvas. As a result, the teeth are arranged in groups of 6-7 pieces.

This tool is designed for cutting raw wood. The spaces between the teeth are needed so that wet chips do not clog the cut and can be easily removed during work.

In addition to the usual hand hacksaws, users today are offered an electrified version of the tool. A powerful electric hacksaw can easily cope with a large volume of work on cutting lumber without tiring the owner too much.

Its versatility is achieved by being equipped with saws with different lengths and widths of blades and tooth sizes. This allows you to successfully work not only on wood, but also on plastic and metal. Another name for this tool is a reciprocating saw.

The main parameter characterizing the capabilities of electric hacksaws is power. It ranges from 400 to 1600 W. The cutting depth directly depends on it, which ranges from 90 mm for household models to 200 mm for professional models.

Hand tools for metal working are not so diverse. There is only one type of hand saw that can cut this material. Its working body is a wide or narrow blade with small hardened teeth. It is inserted into the bow holder and tightened with a screw.

Circular saws

The idea of ​​replacing the back-and-forth motion of the cutting blade with a circular one can rightfully be called revolutionary. It arose after the advent of the electric motor and significantly increased the speed and productivity of work.

A typical tool that uses this principle is a circular saw. Its main advantages - mobility and high power - have overshadowed the modest capabilities of a hand hacksaw.

By design, circular electric saws are divided into geared and gearless. In the first case, the electric motor rotates a gear reducer, on the shaft of which there is saw blade. The second option is to mount the disk directly on the rotor shaft of the electric motor. Both designs have a mechanism for adjusting the cutting depth and tilt angle.

The advantage of gear mechanisms is the ability to make deeper cuts. Gearless saws have two advantages: lighter weight and affordable price.

In the passive one, they are tilted against the stroke (negative sharpening angle).

Passive discs are indispensable when sawing metal. Active ones are used for wood processing. The teeth of the disc can be tipped with carbide. They make it possible to cut harder materials, but have a negative effect on the cleanliness of the cut.

The operating capabilities of the tool depend on the power of the electric motor (from 0.65 to 2.5 kW). Manufacturers also indicate the maximum depth of cut that can be made using a circular saw (from 25 to 85 mm).

A variety of this power tool is a circular saw, which is mounted on a fixed frame. This solution allows you to cut long and wide materials with high precision.

Some manufacturers offer an interesting compromise - hand-held circular saws that can be turned over and mounted on a table, turning them into a stationary “circular saw”.

When answering the question of what types of saws there are, one cannot fail to mention cross-cutting devices. In this case, the circular saw is mounted on a pendulum arm. A rotating plate with transporter (angular) markings is used as a bed.

Advantages miter saw in front of the disc are obvious: you can make a perfectly precise cross cut at any angle. This operation is especially important when joining different wooden parts(platband, plinth, lining, timber).

Chainsaws

Often when working with wood, it is not the cleanliness and accuracy of the cut that is important, but its depth. This is exactly the problem that a chain saw solves - a powerful device with an electric or gasoline motor, designed for felling forests and cutting firewood.

It has two main interrelated technical parameters:

• Engine power;
• Tire length.

A tire is two flat plates connected to each other with a small gap for installation saw chain. At one end it has a driven sprocket, and at the other there are cutouts for the tensioning mechanism.

The power of electric chain saws ranges from 1.5 to 4 kW. When choosing a device for household work on the site, it is better to focus on a power of 1.5 to 2 kW with a length saw bar from 30 to 40 cm. This is quite enough not only for sanitary pruning of the garden, but also for preparing firewood.

If necessary, such a tool can dissolve a board, log or beam, although High Quality and you will not get cutting accuracy.

There are two subtypes of electric chain saws:

• With lateral (transverse) engine placement;
• WITH longitudinal installation motor.

The first type is simpler in design and cheaper in price. But the second one is more convenient to use, although it is more expensive due to the introduction of a gearbox into the design.

The main thing that a chainsaw gives its owner is autonomy. With such a tool you can go into the forest and cut wood there. For such a significant advantage you will have to pay a price: chainsaws are more complex in design than electric ones. This difference is especially noticeable when purchasing a cheap “no-hire” device. Problems with starting, carburetor, rings and spark plugs are frequent companions of such a purchase. Therefore, it is better to buy a more expensive one chain saw than to lose money when using the economy option.

Jigsaw

Disk and chain saws cannot replace a device that uses a narrow cutting blade that moves up and down with high frequency.

Thanks to this arrangement of the working body, the jigsaw allows you to quickly and accurately cut curved flat parts. Plywood, ceramics and plastic, OSB and soft metal - all can be cut good jigsaw with a quality file.

Jigsaw

For each material, manufacturers make special saws that differ both in the inclination of the teeth and in their frequency.

For example, a saw with a large tooth cuts wood better. WITH sheet metal a blade with a fine serrated notch can handle it confidently. We will not give any special recommendations on choosing saws for a jigsaw, since the manufacturer indicates the recommended type of material on each of them.

Basic technical specifications jigsaw - engine power, saw speed and maximum cutting depth (indicated for different materials).

For household models, these parameters are within the following limits:

• Power from 400 to 900 W;
• Speed ​​(with the possibility of smooth adjustment from 0 to 3000 rpm);
• Cutting depth (wood - 45-80 mm, steel from 4 to 20 mm).

A useful jigsaw option is a laser pointer. It helps to clearly see the direction of the cut when the marking line is hidden under a layer of sawdust. Choosing electric jigsaw, take your time Special attention the attachment in which the file is attached. It should provide the most reliable clamping possible. Otherwise, the file will regularly jump out of its weak “embrace.”

The logical development of the jigsaw design was the compact band-saw. Its working body is a closed steel belt with teeth, which is rotated by an electric motor.

Sawing with it is easier than working with a jigsaw, which vibrates strongly and tends to break out of your hands. The cleanliness and precision of the cut of a band saw is ideal. This not only reduces waste, but also produces a cut surface that does not require sanding.

Here the workpiece can be held with both hands, which increases the accuracy of operations when cutting curved elements.

The main indicator of band saws for wood is the cutting depth, which can range from 8 to 50 cm. A jigsaw and a circular saw are not capable of cutting such thick material.

The remaining characteristics relate to cutting blades.

There are two categories here:

• Carbon saws (manufactured steel C75 and analogues);
• Alloy saws made of D6A steel (have increased wear resistance and resistance to alternating loads).

Depending on the manufacturing technology and hardening of cutting teeth, blades are divided into two types:

• Saw blades with a notched, unhardened tooth;
• Blades with cut hardened teeth.

The advantages of saws of the first type are low cost and the ability to cut wood with foreign inclusions: nails, stones, splinters. This blade is used for small sawing volumes (2-4 m3 per day) and at a minimum feed speed (6-10 meters per minute).

The main advantage of a saw blade with a hardened tooth is its high wear resistance (2 times higher than that of saws with non-hardened cutters). Disadvantages - high cost and sensitivity to foreign inclusions.

The remaining parameters of band saws are summarized in a simple list:

• Web width;
• Number of teeth per inch of length (TPI).

For standard wood sawing jobs, a 1/2″ wide strip is ideal. Narrower blades (3/8") are used for shape cutting.

The number of teeth of the cutting band directly affects the evenness of the cut (the more teeth there are, the smoother the cut). Rough saw blades(2.3 TPI) is used for cutting wood and logs up to 200 mm thick. For more clean work saws with 6 TPI are used, and for precise cutting a size of 10-14 TPI is used. Optimal size, which achieves high productivity and good quality cutting – 8 TPI.

A table saw for metal is similar in design to a device for cutting wood. However, its capabilities are more modest. This tool can only perform cross cutting of rolled steel (pipes, angles, fittings, channels) at different angles.