Petrol cutters for metal - two units with the same name

The petrol cutter is an autonomous multifunctional equipment used during repair and construction work, restoration or partial replacement of asphalt pavement or railway tracks. It is used to cut concrete, metal, various types of natural stone, brick, and reinforced concrete structures. The operating principle of the tool is based on the fact that a two-stroke carburetor internal combustion engine rotates the cutting disc. When the cutting attachment comes into contact with the surface of the material, it is sawed.

Disc for gas cutter

The division is carried out according to several criteria. Depending on the material that needs to be cut, discs come in the following types:

1. For metal
   . For working with different products and workpieces.
2. On wood
   . The disc has sharp teeth located along the entire edge.
3. By stone
   . There is diamond coating on the edge of the disc.
4. On concrete
   . Presence of thick diamond coating.
5. For reinforced concrete
   . Used where reinforcement is present.

In addition, the division occurs based on the appearance of the disk:

1. Turbo disk
   . A universal option for any type of cutting. Wave-shaped edge with slanted grooves. By reducing the thickness of the circle on the gas cutter, natural cooling of the disc occurs.
2. Solid
   . Solid version with continuous diamond edge. Carry out wet cutting.
3. Segmented
   . The edge has slots that help cool the blade during operation. Used for dry cutting.

Choose the right cutting type

The safest and highest quality option is “wet cutting”. Petrol cutters designed for this type of cutting have a water cooling system. Thanks to this, the casing of the device is watered with a special liquid, it ensures cooling of the circle and reduces the amount of dust.

However, it is worth noting that this type of gas cutter is more expensive and if you plan to carry out the work “dry”, do not throw money away. Buy a simpler model and remember to pause every 30-50 seconds. work, their duration should be at least 20 seconds. This will prevent damage to the saw blade.

How to use a gas cutter?

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The first thing you need to know when working with a special-purpose tool is compliance with safety precautions

It is important to use the following protection measures:

• glasses and mask;
• headphones;
• helmet;
• clothes made of thick fabric;
• closed shoes and gloves.

It is important to first check the instrument for possible damage. The correct procedure for starting a gas cutter is as follows:

• the instrument is placed on a flat surface;
• the lever is moved to the working area;
• open the air damper;
• start the engine with a sharp movement of the starter handle;
• close the air damper halfway to idle;
• release the shutter lever and press the start button.

Rules for working with a gas cutter

For high-quality and safe use, it is important to adhere to the following recommendations:

When performing dry cutting, care must be taken to ensure that the blade does not overheat. Costs every 2 minutes

make a stop. A complete and compact circular saw must have a protective cover. It is important to remember that the gas cutter is designed for straight cutting only. The edge of the saw blade should smoothly touch the work material. Movements should not be sudden or with strong pressure. Work begins after the tool has reached the required speed. The cuts are not made deep to prevent pinching of the disc. It is prohibited to grind products with a working disc.

This will lead to cracks and destruction of the cutting edge. The correct position of the gas cutter is on top of the work surface.

Preparing the tool for work

The structure of a typical gas cutter with a disk as a cutting element is shown in the following photograph.

In addition to gas-powered disc cutters, there are chain models, the design of which is almost identical to that of a chainsaw. There are also specialized modifications, such as wall chasers and rail cutters.

Preliminary configuration of gas-powered tools is carried out at the manufacturing plant. In most cases, nothing needs to be adjusted. All types of units are prepared for operation in the same way. The actions are performed in the following sequence:

• visually inspect the technical means and the cutting attachment for external damage;
• install the protective casing in the required position, securing it securely;
• check the existing switches and buttons for free movement, and the throttle lever (when you press its release) for ease of rotation and return to its original position;
• install a disk suitable for the job;
• check the installation of the spark plug - it must be screwed in all the way;
• remove foreign objects and debris from the workplace;
• prepare a fuel mixture consisting of gasoline and oil mixed in a certain proportion;
• check the presence of fuel in the tank of the gas-powered tool, refueling it if necessary.

The ratio between gasoline and oil in the fuel mixture, as well as a detailed description of the safe refueling process, are contained in the user manual for the product model used.

If you plan to use the tool using the wet cutting method, then additionally carry out the following actions:

• connect a tube to the connecting node of the equipment through which water will flow from the water supply or from the tank;
• use a special lever to turn on the water supply (after completing the work, its supply is stopped).

The operating unit must not have any mechanical damage. If they are found, then you need to first repair the device. The discs used should not have chipped cutting edges, cracks or other defects. Do not use wet abrasive wheels or those that have fallen from a height.

Changing a disk is done like this:

• the drive shaft is fixed motionless;

• using a wrench of the required size, unscrew the fastening bolt;

• remove the bolt, washer, as well as the outer flange, leaving only the inner one;
• put the disc on;
• put all the elements in place in the reverse order, tightening the bolt tightly (but not excessively, without unnecessary effort).

When installing a new disk, you must ensure that the rotation speed for which it is designed is greater than that of the tool . The equipment used must not be equipped with working attachments if they are intended for use at lower speeds.

Communities › This is interesting to know. › Blog › Friday chainsaw crafts!

Heating registers made of steel pipes: their pros and cons

Light weight and solid power combined with compact dimensions allow this “lumberjack’s dream” to be combined with an ice auger and a bicycle, a sawmill and a winch.

Anyone who can confidently work with a welding machine, an angle grinder, and, if necessary, can even use a lathe, can make interesting homemade products from a chainsaw with their own hands.

In this case, knowledge of the basics of design and drawing will be very useful, since the accuracy of all dimensions and quality of assembly are the main conditions for the normal functioning of a unit driven by a chainsaw.

Without going into technical details, we will consider the most interesting designs using it.

Options for homemade chainsaws

The first thing that comes to mind when you think about what can be done with a chainsaw is its use as a sawmill. Many developers had to split logs onto beams with this tool.

In this case, the log lies motionless and is neatly sawn along its entire length without wobbling or oblique seams. If you equip such a mobile carriage with four lifting screws, you can accurately set the thickness of the sawn timber.

Rules of care and use

No matter how high-quality and expensive the instrument is, if it is not properly cared for, it will quickly become unusable. This is why you need to check every day:

• How tight is the drive belt?
• Is the throttle safe?
• Starter with its cable;
• Saw wheel with casing;
• Closing contacts;
• Tightening bolts and nuts.

If necessary, clean the areas around the air intake and pre-filter.

Every week you need to clean:

• Carburetor;
• Cylinder cooling fins, as well as flywheel;
• Spark plug.

Check and inspect:

• Return spring and starter;
• Handles;
• Main filter.

Every month you need to check:

• Connections and wires;
• Fuel supply hose and fuel filter;
• Clutch springs;
• Drive pulley and clutch drum for wear.

The inside of the fuel tank and the outside of the carburetor need to be cleaned.

Rating of the best gas cutters

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We present to your attention a list of the best models of this equipment. These include:

HUSQVARNA K760 350-25. The Husqvarna petrol cutter is considered a universal type of equipment. The tool can easily handle metal and concrete surfaces. There is an additional cleaning filter that controls dust emissions during operation. The comfortable handle ensures proper use of the structure at any angle.

Makita DPC6430. The Makita petrol cutter is equipped with a quick start. The equipment has a tight fastening, which ensures reliable fixation of all elements together. There is a function here that provides a two-level arrangement of the cutting element.

Thanks to this, there is unobstructed access to the surface being treated. The design can work up to 2 hours without interruption. There is automatic air filter cleaning here.

Still TC 420. The petrol cutter still has an automatic system for tensioning the belt drive during operation. The design has a large air filter. It reduces the amount of dust generated when cutting hard surfaces.

The only drawback of this model is the budget materials in the body. Basically, it is dense plastic that is not able to withstand constant mechanical stress. It is used for both professional types of work and household needs.

The powerful motor provides the maximum number of revolutions per minute. It can handle iron and concrete structures with ease. In the process of contact with an object, the tool produces minimal vibration. In addition, the device consumes a minimal amount of fuel.

Advantages and disadvantages compared to a gas burner

The petrol cutter is not very popular among specialists. Many people still use gas cutters. And there are a number of reasons for this. Let's compare the advantages and disadvantages of both technologies. Advantages of a petrol cutter:

• Mobility. The gasoline cutter is quite easy to carry. The compressed air container is smaller in size and weight than oxygen cylinders. Fuel is easy to get, it is available in any garage, or you can buy it at a gas station.
• Ability to work at low temperatures. According to manufacturers, a gas cutter with a spray operates at temperatures of -40 and below. The cutting torch does not work in the cold.
• Simplicity of design. A gas burner is not a super complex device. But a gasoline cutter is easier in any case. If you know how to solder, making repairs will not be difficult.

The disadvantages are no greater than the advantages. But they are more significant:

• Difficult to set up. The fuel supply constantly needs to be calibrated, and the injectors have to be cleaned periodically. A gasoline cutter cannot be used out of the box. Quality work requires practice and skill.
• The need to maintain pressure in the tank. It is unlikely that you will be able to work with a gas cutter for a long time. It is necessary to constantly maintain the pressure in the oxygen tank. The quality of the flame depends on the volume of air in the cylinder, and you have to constantly adapt to pressure changes, and therefore the power of the burner.
• Safety. Although oxygen cylinders for gas cutting are considered to be explosive, if used correctly, the risk of an accident is minimized. A gasoline cutter requires careful control and responsibility at all stages of work. Especially when it comes to models with an evaporator, where the fuel boils on the flame of an additional nozzle.

How to choose?

Before purchasing a tool, it is recommended that you familiarize yourself with the characteristics of gas cutters. This equipment is used for any type of work. It easily copes with the installation and dismantling of metal and wooden parts. It is used in the construction of roads and residential buildings.

What should you pay special attention to during the selection process? There are several criteria that will help you choose the appropriate model.

These include:

The material with which the tool will work. There are three types of models designed for different types of hard surfaces. These include: a device for cutting metal, concrete and a universal design. The first type has medium power. As a rule, gas cutters for metal have little resistance to iron parts.

Cutting type

When choosing, it is important to consider the processing method. Models with automatic cooling are considered the safest.

During operation, a small amount of a cooling component is supplied, which prevents overheating of the equipment. This prolongs its performance.

Rules for selecting additional saw wheels

There is a high probability that when working with gas cutters you will need saw wheels of various modifications and diameters. When choosing a wheel, do not forget that the characteristics of the greatest rotation should correspond to those of a gas cutter or be even less.

Diamond wheels are divided into several types:

• Marked SPECIAL, which is a designation for wheels intended for specialized use. Such circles have increased performance indicators.
• Marked SUPRA, which means circles used for professional work. These wheels have higher wear resistance and are suitable for high cutting speeds.

When choosing abrasive wheels, you should pay attention to the materials that will be cut. The choice of wheels varies when cutting asphalt, stone or metal.

Characteristics of gas cutters

The modern market offers a wide selection of different models. According to consumer reviews, the greatest demand is for semi-professional options that cost less and perform multiple tasks. This type of autonomous circular saw has the following characteristics:

• tool design;
• equipment power – on average 3-3.5 kW;
• cutting height – approximately 125 mm;
• disc diameter – about 350 mm;
• diameter of the mounting hole is on average 20 mm;
• engine volume – on average 65-75 cm³;
• tank capacity – approximately 0.65-0.7 l;
• noise level – approximately 95-100 dB;
• instrument weight – about 9.5-12 kg;
• additional functions.

Petrol cutter Echo CSG-680

The semi-professional Japanese model CSG-680 petrol cutter is a productive and versatile unit. The manufacturer has provided the ability to change disks. It is possible to cut wood, plastic, concrete, and metal products. You can also work with a diamond cutting disc. The design is equipped with a powerful 1-cylinder internal combustion engine (2-stroke type) and is complemented by an air cooling system. The equipment is supplied as standard.

Advantages of Echo CSG-680:

• Convenient belt tension system. The manufacturer has provided additional mechanisms to simplify the belt tensioning procedure.
• Power transmission system. Thanks to the addition, the tool cuts any materials accurately and accurately.
• The presence of a diaphragm carburetor. Allows you to perform cutting operations on materials at the required angle.
• Classic filtration system.

• Innovative starting system. To increase cutting efficiency parameters, the manufacturer used an innovative ignition system - automatic change in ignition timing.
• Convenient location of control units, which facilitates the operation of the tool and makes it safer.
• Availability of additional security systems. The manufacturer has supplemented the unit with a right-hand shield, a special vibration and noise suppression system, a muffler with a spark extinguisher, and a metal screen with a rubberized coating to protect the operator’s hands and face.

Disadvantages of Echo CSG-680:

• Very heavy equipment. My hands get tired after 10-15 minutes of work. Carrying the instrument is also inconvenient due to the bulkiness of the case.
• High price.
• Unbalanced design.
• No smooth start.

In general, consumers called the equipment safe and functional. Many consider this equipment to be the best in its class - reliable, powerful and safe. A small percentage of buyers who tried the equipment in use indicated a high noise level and a weak filtration system. About 20% of buyers were dissatisfied with the quality of the case and its design features.

Video review of the Echo CSG-680 gas cutter:

Design and principle of operation of a gas cutter

The main component of a gas cutting tool is an engine, mainly a 2-stroke engine, which runs on a fuel mixture of oil and gasoline. The unit is mounted on a housing equipped with special handles and controls. The functional part of the gas cutter is the drive, on which a cutting disc with a diameter of 300-400 mm, protected by a casing, is installed. The transmission of torque from the engine to the drive is carried out via a belt.

The main feature of modern gas cutters is the presence of a multi-stage dust protection system. It prevents contamination of the carburetor, cylinder-piston group and bearings. In addition, dry cutting uses water cooling of the disc. It effectively neutralizes the main flow of dust and prevents a number of negative consequences of overheating, in particular, premature wear of the cutting element and destruction of its structure, and also reduces the load on the engine.

When working with a gas cutter, it is necessary to maintain a right angle between the cutting disc and the surface being processed. This reduces the load on the drive and prevents slippage from the cutting line and damage to the cutting edge. The maximum insertion depth of the disk for various models is in the range of 10-30 cm. When cutting dry materials, you should not use a gas cutter for more than 30-50 seconds - within 15-20 seconds after making the cut, it is necessary to ensure free rotation of the disk.

Powerful models weighing more than 15 kg are equipped with transport trolleys with a remote control system or special legs, which allow the tool to be firmly fixed when cutting.

Rating of petrol cutters

To make the right choice, it is recommended to first get acquainted with the models that are very popular. The best gas cutter should be chosen from the following list:

1. Stihl TS 420
   . Low vibration and comfortable handle shape allows you to work in any position.
2. Husqvarna K 760
   . The petrol cutter quickly copes with the assigned tasks in the most emergency situations.
3. Makita DPC 6431
   . Reinforced aluminum casing for low vibration.
4. Partner K 750
   . The body of the model is shortened, which helps control the process.
5. Hilti DSH 900-X
   . It has a powerful motor, reinforced with a protective casing.
6. Hitachi CM75EAP
   . The cheapest tool. Suitable for cutting metal.
7. Echo CSG-680
   . Manual petrol cutter with automatic ignition advance system.
8. Wacker Neuson BTS 635
   S. A simple device with a durable body and good dust and moisture protection.
9. Oleo-Mac 983TTA-14
   . Suitable for semi-professional use.
10. Solo 881-14
    . The advantage is its lightness and good weight distribution. Technically complex device.

Types of gas cutters

Depending on the properties of the material being processed, tools fall into the following categories:

1. For metal
   . Power up to 4.2 kW.
2. On concrete
   . Power more than 4.2 kW. The chain cutter for concrete has a disk rotation speed of 4.7 thousand revolutions/min.
3. Universal models
   . The tools are endowed with the highest performance, as they are designed to work with different types.

In addition, there is a division according to purpose into:

1. Rail cutters
   - there is a mechanism that significantly expands the depth of cut. Used by railway line installers.
2. Wall chaser
   – works with two diamond-coated discs. Used to create grooves for electrical wiring in various surfaces.
3. Chain cutter
   - the tool looks like a gasoline saw; a diamond chain allows you to cut both metal and stone.
4. Chrome-plated gas cutters
   - used for rescue operations.

The principle of operation of a gas cutter for cutting metal

Concrete and steel structures are the main objects that are processed using a gasoline cutter. Working with metal structures does not require the use of powerful models, as when cutting concrete. A popular option for cutting steel elements is the KZhG 1B gas cutter ; other models with a power of up to 4,200 W can also be used.

When processing metal structures, the following rules must be observed:

• to perform vertical cutting, the tool must be held at an angle of 90 degrees to the surface;
• the position of the protective casing must be such that sparks fly in the opposite direction from the worker;
• at the moment the disk touches the steel surface, the engine should operate at medium speed, and after creating a guide groove, the speed can be increased to the maximum;
• In order for the cutting area to be of high quality, smooth and without jagged edges, the tool should be moved smoothly, without jerking;
• thin sheet material, small diameter pipes can be immediately cut with a vertical cut;
• steel angles and beams are cut into segments, being especially careful where parts join at an angle.

It should be remembered that the metal gets very hot in the places where it is cut, so to avoid burns, you should touch the cut fragments after some time.

Types of portable cutters

A portable gas cutter is a fairly simple design. The principle of operation is the creation of a directed jet of flame by mixing oxygen and flammable gas. The cutter is based on a cylinder and a burner that is attached to it. According to the type of fuel supply, portable cutters are divided into:

• Injection
• Injectorless.

The main advantage of injection-type cutters is their high combustion temperature. The main advantage of injection-free cutters is their high mobility and simplicity of design.

Injection portable cutters

1. Combustible gas is supplied under high pressure through a twin tube
2. Oxygen is supplied in the same way
3. The gas mixed in a special chamber, without losing its initial speed, escapes from the nozzle
4. Using an external source, or through a built-in piezoelectric element, a spark is supplied

The mobility of the injection burner is not high. The design of two cylinders is quite cumbersome. However, these burners are designed to be carried by one person.

Injectorless portable burners

A gas collet is one of the cheapest tools for gas welding. It consists of a gas cylinder with a capacity of up to 0.5 liters, to which a burner with a nozzle is attached through a collet connection. The advantages of the device are:

• Highest mobility. The entire structure weighs no more than 700 grams. No special containers or bags are needed for carrying.
• Versatility. In addition to their direct functions, such burners are used for heating car locks, as a blowtorch, etc.
• Ease of use. There is no need to fine-tune the fuel supply to the nozzle. To get started, just click the button with the piezoelectric element.

There are also quite a lot of disadvantages. The main ones include:

• The flame goes out easily. The injector-less design does not involve active oxygen supply. The strong flow of compressed propane creates an unstable jet of flame that is easy to knock down.
• High operating costs. Consumption is about 200 ml. gas per hour of work. Those. even the largest cylinder will be discharged after 2.5 hours of operation.
• Relatively low combustion temperature. Although mini-cutters heat up to 1300 degrees, they cannot compete with their injection counterparts. The gas exit velocity, as well as the efficiency of the mini-cutter, is lower.

Mini-burners, even similar in appearance, differ significantly both in flame quality and design solutions. For example, a mini gas cutter from KOVEA Fire-Z Torch is manufactured on a collet connector and has an operating temperature of up to 1500 degrees. And the HecatonTorch KT-2610 burner from the same company produces a flame of up to 2500 degrees.

Additionally, the Fire-Z Torch uses a collet connection for disposable cylinders, while the HecatonTorch uses a US thread. If you need a portable blowtorch with advanced functionality for the garage, it is better to purchase the first option. And if you consider the torch as a professional tool, it makes sense to overpay 1000 rubles and buy HecatonTorch with a US connection

Advantages of gas cutters

The main advantages of this type of cutting tool are mobility and autonomy. Petrol cutters can work indoors and on construction sites where there is no electricity. Being a hand tool, they allow you to cut in hard-to-reach places.

With the purchase of a gas cutter, there is no need to purchase a whole arsenal of cutting machines. After all, this equipment is multifunctional and allows you to solve a wide variety of industrial and household tasks. Thus, gas cutters are used for cutting concrete, asphalt, brick or stone masonry, metal structures, plastics and composite materials. With their help, dismantling work, gating, cutting openings in walls and ceilings, etc. are performed. In addition, these units are successfully used in gardening, as well as in the construction of private houses and auxiliary buildings.

The petrol cutter is a rather massive and heavy tool. Therefore, when choosing a particular model, you should take into account its ergonomics, as well as the ratio of power, weight and vibration level.

What is better: a gas cutter or a gas cutter?

You can compare tools for working with metal. You can understand which option is better by becoming familiar with the basic operating parameters of these devices. Let's look at the most important ones:

1. The petrol cutter cuts the material due to the rotation of the disk. Gas cutting results in the combustion of metal in a stream of pure oxygen.
2. Some types of products cannot be separated using a gas cutter; with a gas cutter, only thickness can become a problem.
3. In terms of weight, a gas-powered device wins, because the operator only has to hold the burner itself, which, due to its size, weighs little. The cylinder is on the floor.
4. For safety reasons, it is better to deal with a gas cutter. If you follow the operating rules, no problems should arise. Working with gas requires some special features regarding the placement of the cylinder and working conditions. In addition, interaction with gas is carried out with a welder’s mask.

What can be cut and what is the cost?

Below is a table of fuel consumption using the example of a Vognik-182 gas cutter.

As you can see, the consumption is quite small. Therefore, even if you use a gas cutter as the main tool, and a gas cutter as an auxiliary one, you will definitely be able to save carbide.

Today, a gas cutter is not a very common tool. People treat it with distrust both because of its flammability and because of the difficulty in setting it up. However, the tool has its own niche. It is lightweight, compact, and works where a gas burner fails due to low temperatures.

Pay attention to ergonomic indicators, as well as the convenience of the gas cutter

A petrol cutter is a tool that has a fairly large mass, so when choosing its weight you should definitely pay attention. A lighter model will provide better control and less hand fatigue. Another important parameter is streamlining; it affects the maneuverability of the gas cutter.

Don’t forget to look towards the handle of the unit, it’s very good if there are 2 of them. At the same time, the distance between them should be quite comfortable and equal to the width of your shoulders. Also pay attention to the quality of vibration damping. It would be great if a special elastomer was applied to the handles, which would provide vibration damping. Don't forget about the different attachments on your gas cutter.

How to choose the right gas cutter

All tools can be divided according to purpose:

• professional – designed for use 8 hours a day. They are distinguished by increased reliability and an expanded range of functions.
• household - used in a gentle mode for no more than one to two hours a day with breaks, they do not require too much engine power. Their prices belong to the lower price segment, their layout is minimal.

Gas cutters use two cutting methods.

Wet - uses water supplied to the protective casing to cool the cutting disc. The coolant reduces the level of air pollution from dust and contamination of parts, and the speed of the work process increases. This method allows you to increase the service life of the cutting disc and protect against the appearance of small cracks and dark spots on it. Such gas cutters belong to the highest price segment.

Dry – without using liquid to cool the cutting wheel. Therefore, after 40-50 seconds of work, it is necessary to take a break for 23-30 seconds to cool the cutting wheel. This slows down the work, but you can buy a model much cheaper.

Petrol cutter Stihl TS 420

In the class of semi-professional equipment, this model is considered the most convenient to use. It has a compact body, low weight (can be carried and operated with one hand) and reduced emissions (by 70%). The model also features a cutting abrasive disc - wear resistance and reliability. And the impressive power of the device maximizes its scope of application. The equipment is recommended for use in harsh operating conditions: increased loads, long-term continuous operation, cutting hard materials. Has standard equipment.

Advantages of Stihl TS 420 identified by consumers:

• ICE 2-mix. The gasoline unit at maximum loads shows excellent fuel economy - 20%. The peculiarity of the technology allows you to reduce costs.
• Air filter protection. The equipment uses a special cyclonic filter cleaning system, which simplifies the maintenance of the unit, increases the intervals between servicing and increases its service life by 45%.
• Ease of use. The unit can be used either manually or on a trolley. The kit with the gas cutter includes a set of keys for installation.
• Versatility. You can process granite and metal products/structures, concrete and asphalt in extreme conditions - rescue work, construction, dismantling of structures.
• High build quality. German technology has earned a reputation in the market for producing reliable and extremely safe equipment. This fact is confirmed by user reviews of the TS 420 gas cutter model.
• Disk protection. The manufacturer used magnesium disk protection.

• Ergonomic and balanced design. The correct location of adjustment buttons, handles, and gas tank caps ensure maximum comfort and safety in using the equipment.
• Excellent tool handling. Due to the balanced design, the unit is easy to operate, which guarantees precise and neat cuts.
• ElastoStart device. This is a trigger mechanism synchronized with the decompression valve and compensator. Working in tandem of these three components helps prevent oversaturation of the fuel mixture, which inevitably happens when the filter is significantly dirty.
• Anti-vibration mode. Ensures long-term operation of the operator with the device - hands do not get tired, preventing the development of occupational diseases.
• Belt tension system. A unique semi-automatic mechanism - unscrewing the proprietary clamping screws ensures automatic belt tension through a special spring assembly.

User-identified shortcomings of the Stihl TS 420:

• Difficulty replacing the filter. Many users note that the innovative filtration system does not provide for independent replacement of elements.
• Uncomfortable working with the unit on a trolley.
• The body is made of low quality materials.

A fairly large percentage of consumers noted the high build quality of the unit and the external elements of the housing that are unstable to mechanical loads. The equipment requires careful handling. Reviews also indicate the durability of the equipment - the service life without the need for repairs is (based on reviews) 1.5-2 years. There are some complaints regarding difficulties with servicing the machine. A small percentage of consumers indicate that equipment requires regular professional maintenance. According to other criteria, users called the unit powerful and functional equipment.

Video review of the Stihl TS 420 gas cutter:

Choice of gas cutter manufacturers

When purchasing a gas cutter, every buyer should pay attention to the kit with which the tool is sold, namely, what is included in it. The kit must be equipped with:

• A screwdriver for adjusting the carburetor;
• Angle and universal wrench.

The best option to purchase would be tools from well-known manufacturers, because they adhere to basic standards and rules. They also provide an extended warranty and service, so finding and replacing gas cutter spare parts will not be difficult.

Advantages and disadvantages

The special equipment market offers both models with an evaporator and spray-type gas cutters. However, there are a number of reasons to believe that a spray cutter is better. Namely:

• Spray cutters have up to 50% less weight compared to evaporative cutters, because there is no asbestos chamber and additional heater
• A sprayer is easier to maintain than an evaporator, because no need to clean the evaporation chamber
• The gasoline spray cutter heats up less. Due to the additional heater, the evaporative type cutter must be cooled during operation
• The evaporator is not suitable for operation at low temperatures due to the constant cooling of the vapor. (In winter, it is better to use a spray cutter)
• The atomizer, unlike the evaporator, is resistant to flame backlash.

Intensity of use

Currently, professional and household models are available on the market, the main differences between which are working life, design and functionality. Regarding the first, household gas cutters are designed for approximately 25 hours of operation per month. They have low power and are suitable for small volumes of work. A professional tool has a wider range of applications, and its working life is about 8 hours of continuous operation.