Many homely owners have home arsenal grinder - this is what the people call the angle grinder. And so, when it becomes necessary to work with a tree: cut boards, cut down branches on trees or prepare firewood; and there is no appropriate electric saw at hand: circular, jigsaw, chain, etc .; some savvy craftsmen say to themselves: “So what ?! After all, there is a Bulgarian! You can totally get by with it!" How right are such resourceful masters? .. This is exactly what our article is about.
Never put a saw blade on grinders!
This is not just the title of an article subtitle, it is a cry from the heart of all power tool sellers. After all, they very often come to them with the same request: "Give me a saw blade for a grinder so that the tree can be cut." And they all unanimously answer in such cases: “They don’t cut wood with an angle grinder! Yes, and generally put saw blade on the angle grinder, by definition, it is impossible! Why is that? We contacted the developers with this question. cutting tool TM attack and they gave us a comprehensive answer on this topic.
Yes, an angle grinder (angle grinder) is a powerful tool and can easily cut and a simple board, and thick log, as long as the diameter of the saw blade is suitable. But cutting wood with a saw blade mounted on an angle grinder is, first of all, very traumatic, especially if the protective cover is removed from it. After all, the grinder has a very high rotation speed, which creates centrifugal force, which will significantly increase the load on the saw blade. In addition, a circular saw is structurally different from an abrasive wheel - it has teeth, and this circumstance leads to increased vibration, especially if saw wheels for metal are installed on the angle grinder. As a result, such a load will significantly exceed the tensile strength of the circular saw blade, it can simply break during rotation. What this is fraught with, probably, it has already become clear to everyone. And in such a situation, nothing will save from injuries: neither the protective cover of the grinder, nor individual funds cutter protection.
To prove the danger of such disk “castling”, all kinds of tests were carried out. Yes, and in life there were many cases when the "savvy" owner was left without arms or legs. And in 2011 there was unique case when a certain “economic” Volgograd citizen decided to cut branches from a tree with using angle grinder and installed a circular saw blade on it. As a result, he was delivered to the thoracic surgery department with a torn chest. Fortunately for the poor fellow, everything ended well.
Is it possible to install a circle from a grinder on a circular?
The question can be rephrased: can a circular saw be used as an angle grinder? In principle, this is possible. If you install an abrasive or diamond disc, then there is no risk for the cutter in this case. However, the circular is very poorly adapted for such operation. Yes, when you need a smooth cut, the saw will do the job. better grinders, but its protection from dust is much worse than that of the latter. Both the cutter itself and the tool are swallowed up with dust - then it will take a long time to blow it through.
In addition, the speed of rotation of the circular saw is much lower than that required for effective work circles from angle grinders. For example, if you install a diamond abrasive disc on a circular saw and try to cut ceramic granite with it, then the engine can easily burn out. And the circles themselves will wear out faster. After all, sawy and abrasive discs designed for different angular speeds.
And once again we repeat: do not use saw blades on the grinder! Better buy an inexpensive circular saw!
Angle grinder - very useful tool, which can be used in various fields of production. It is due to its versatility that it has become widespread both at industrial facilities and at the household level.
Types of nozzles for wood
As a tool for woodcarving, only angle grinders with speed control are suitable. Since the main purpose of the grinder is the grinding of homogeneous materials, then to the processing of a heterogeneous structure wooden materials must be approached very carefully.
The following types of circles for wood can be distinguished:
- Wood saw for grinder
- Cutting discs
- planers
- Grinding
Each of these parts must be used for its intended purpose.
saw blades
A saw blade for wood for a grinder consists of a metal circle with a chain attached to the edge. Design of special saw tools similar to those used on chainsaws. But saw blades are made of tungsten carbide. When a disk for a grinder on a tree hits a solid obstacle in the wood - knots, resin, metal, its base rotates without breaking the chain. With chain nozzles, it is quite easy to clean the logs from knots and bark, to give them the necessary initial shape.
Cutting discs
Various manufacturers produce and cutting wheels on wood specifically for angle grinders, for example, a Bosch cutting wheel. Their design differs significantly from the design of disks for circular saw. Usually they have side teeth that protect the nozzle from jamming. Differ cutting tools by number and shape of teeth:
- bevelled;
- straight;
- in the form of a trapezoid.
The first version of the shape of the teeth is considered universal. It is suitable for all types of wood with small amounts of work. When sawing wood from soft varieties, it is quite possible to use discs for a grinder on wood with a straight tooth. Trapezoidal teeth are capable of processing quite solid products from wood: chipboard, fiberboard, OSB boards.
In addition, cut-off wheels vary in diameter. Minimum size- 115x22 mm. The most commonly used circles with a diameter of 125 mm, they are universal and suitable for a wide range of jobs. Maximum possible size- 230 mm. But the latter option is undesirable to use when working with wood, as the likelihood of injury increases. Depending on the size chosen, the depth of cut in the wood will also be different.
Disks - planers for grinders
maybe use of angle grinder as a planer. For this, special circles are used - planers. Work with such nozzles is allowed without a protective casing, since solid discs are not destroyed. Many brands of wheels can be sharpened repeatedly. Before use, an additional handle must be installed on the angle grinder to more securely hold the tool with both hands.
Grinding discs
This type of circles allows you to use the machine for its intended purpose. For finishing and polishing wooden surfaces can be used different kinds nozzles:
- cord brushes;
- end circles;
- petal nozzles;
- emery circles;
- cutting nozzles.
Rough processing of wood is carried out with the help of special cord brushes. End discs are designed to level the edges of parts, which is often required when miter sawing workpieces. They make a great file replacement.
The widest range of sanding attachments petal circles. Depending on the size of the abrasive grain, the wood surface can be cleaned with varying degrees grinding. With a gradual transition from using a coarse-grained nozzle to discs with finer grains, the effect of polishing parts is achieved. The system of trapezoidal petals, which are stacked with a three-quarter overlap on each other, wears rather slowly. If the embossed surface wooden product complex, then used petal discs with a radial arrangement of abrasive strips.
Usage sandpaper or skins on a special nozzle allows you to grind quite large areas wooden surfaces. The ability to quickly change the sanding cover makes these tips versatile.
When deleting old coatings often use peeling nozzles. As a rule, this is a wire brush attached to a metal base. It can be located either parallel to the surface of the circle or perpendicular to it. There are options for fixing the bristles on the perimeter of the disc.
When working with wood, you need to make sure that it is fairly dry. If there is fungal damage on the surface of the workpiece, they must be cleaned to healthy wood.
Universal wood discs for grinder Graff Speedcutter
Wood disc for grinder Graff Speedcutter- this is Circular Saw with three teeth, which is intended for high-speed angle grinders. It is used in models with a maximum rotation speed of 12.2 thousand revolutions per minute.
The three carbide teeth are made of tungsten carbide and set at a 5° angle to the steel base of the tool. Thanks to this design and special form each tooth, the cut surface is very clean and even. A disc is being made for the Graff Speedcutter grinder with a size of 125x22.23x3 mm. The cutting width of the wood is 3.8 mm.
Designed Graff Speedcutter circles for artistic wood carving, cleaning and grinding various breeds tree. They are also used when cutting and selecting grooves in wood, its transverse cutting and longitudinal cutting. It is possible to use such nozzles when processing parts made of aerated concrete and gas silicate, fiberboard, chipboard, laminate, drywall.
Rules for working with the tool
Any tool can be a serious hazard if the instructions for use are not followed. specific situation. Bulgarian for cutting wood in this sense is no exception. The main points that are necessary when working with disks for an angle grinder - angle grinder on wood:
- Choosing the right circle size
- Installing a wood disk for a grinder
- Selecting the appropriate operating mode for the machine
- Refusal to use damaged circles
- Use of personal protective equipment
The nozzle size should be installed without problems under the protective cover of the machine. If this does not work, do not remove the protection. When working on wood with an angle grinder, it is necessary to use only special circles on wood for an angle grinder. The use of attachments that are designed to work on other materials may result in injury or a damaged tool. In order to avoid the destruction of the disk on wood for the grinder, the speed of the grinder must correspond to that indicated on the surface of the circle. Before starting work, it is worth checking the wood disk for defects and damage. If they are present, then it becomes dangerous to use. When working with the tool, eye and hand protection must be used. It would be best to use tight overalls.
Angle grinder is a universal device with which you can work with any material. Perform cutting, peeling and grinding operations. Among the people, she received the name Bulgarian. When handling the tool, you need to carefully select the circles. It depends on the size of the equipment, the rotational speed and the type of surface to be treated.
A variety of discs for grinders
The range of discs for angle grinders is great. When buying, you need to understand well what discs are for grinders. They differ depending on the work performed:
Characteristics and choice of circle
When choosing a circle for an angle grinder, you need to take into account what material will be worked with. In this regard, several factors are taken into account:
Sometimes there is a desire to install circular circle to Bulgarian. This cannot be done. The reasons are as follows:
Cutting disc for wood
The cutting disc for wood for grinders is made of high-strength alloy. When choosing, you need to be guided the following rules:
- Hard wood requires the use of an variably beveled wheel.
- For softwoods and softwoods, a straight tooth is used.
- Medium-hard rocks lend themselves to cutting a trapezoidal tooth.
In progress circles are heating up. It is not always possible to cool them down. Therefore, slots are made from the side of the teeth to the axis. They are 2 mm wide and 20 mm deep. Sometimes they are filled with copper. expansion is compensated. This prevents deformation of the metal.
Rough stages of work
At the first stage, the blanks are peeling. To do this, there are nozzles on the grinder for working with wood:
Gentle discs for wood
These are nozzles universal type. They are used depending on the work performed:
Tool cutter features
The cutter as a nozzle for the grinder is allowed for use, but requires precautions. With its help, you can make grooves, roughly process the ends of the workpiece or saw it. In the process of work, its jamming is excluded, but you need to know at what speed it is allowed to use it. It is important to consider in which direction the cutter is rotated relative to the location of the angle grinder.
The surface quality will be somewhat different from working on milling machine. However, the necessary operations can be done.
Using a chainsaw chain
If put on chainsaw chain on disc, you can cut boards up to 40 mm. In doing so, care must be taken. To avoid injury, you must adhere to the rules:
- Do not remove the protective cover. If it interferes with the installation, then the equipment cannot be used.
- The RPM value is set according to the one indicated on the disk. Otherwise, the chain will jump off.
- Work is carried out in protective glasses and gloves.
If it is necessary to work with wood, it is possible to use attachments for a grinder for wood processing. However, you must first read the instructions. Such work has its own characteristics. If you ignore them, you can easily get hurt.
The Bulgarian is associated with an ordinary user with a tool for metal, concrete, brick. This is not the whole area where angle grinders are used. She can work with wood. There are special discs for the grinder. For sawing, milling, grinding wooden blanks, several types of cutting wheels are used. Each is designed to perform a narrow-profile task. Universal variant does not exist.
Saw blades are classified by diameter. This parameter is taken into account when selecting a nozzle for a specific model of an angle grinder. If the disc diameter is greater than the allowable one, then working with the tool is possible only after removing the protective cover, and this gross violation safety regulations. To avoid problems, cut-off wheels are available in several unified sizes:
- 115 mm - sanding wood in hard to reach places
- 125 mm - milling, grinding, debark
- 150 mm - sawing boards
- 180 mm - sawing thick boards
- 230 mm - processing of massive workpieces. An angle grinder with a disk of this diameter is difficult to hold in your hands
Depending on the design, the wood grinder disc is used in several operations:
- cutting
- Cleanup
- Milling
- Grinding
Let's consider each in more detail, and also determine the nozzles for each type of work.
cutting
A wood grinder disc is rarely used directly in sawing. With it, you can process boards up to 40 mm thick, while observing safety regulations. There are two types saw blades, with which you can cut the board:
- Hybrid. It consists of metal base round shape and a chain around it from a chainsaw. The nozzle is used when working with thin boards, with small cuts along the length.
- Disc for circular or hand saw. This is a round saw element with teeth of different sizes located along its outer edge. The pitch and size of the tooth affect its characteristics. The larger it is, the more aggressive the sawing. The smaller, the neater the cut.
A standard circle for a circular or hand saw is cast from solid steel. It is designed for installation in a stationary machine with a hard seat. The angle grinder works at lower speeds, the disc constantly vibrates. This can lead to its destruction, as well as injury to the direct performer of the work and others. Therefore, this type of work is not always safe.
Cleanup
This is a rough job with wood, for which a wood grinder disc is suitable. There are two types of factory-made nozzles for this type of work.
- The disk is a planer. Practical attachment for the primary processing of logs and ends of irregular boards. It is massive, durable, equipped with three knives. With its help, the tree is cleared of bark. For work, it is not necessary to install a protective cover, since the thick cutting wheel will not collapse.
- Peeling. It consists of a metal base and a chain for a chainsaw, which trims its outer part. This structure allows you to perform a rough cleaning of wooden blanks from the bark, to even out cracks and chips. Peeling chain circle suitable for cutting wood.
Milling
Angular in progress grinder with wood attachments. Milling wheels cut grooves in the workpiece different widths. The size depends on the thickness of the nozzle. A perfectly even cut, like on a machine, is over. But cutting out a simple landing socket or groove for a tongue will not be a particular problem.
There are solid and compound nozzles for milling. Compound circles make a wider cut.
Grinding
This is a finishing treatment of wood, designed to remove small bumps and roughness. There are several types of nozzles:
- Cord brush. The working surface of the relief structure for deep, rough processing of wood. Cordbrush "bites" into the base, smoothing out bumps and chips.
- End disk. Shaped like a bowl. Work surface - only a narrow strip with outside saw circle. This shape allows you to process end angle cuts, as well as hard-to-reach areas.
- Petal nozzles for grinding. The most common type for finishing. It consists of a steel base glued with abrasive material. The depth and quality of sanding depends on the grain size of the sandpaper. The smaller it is, the smoother the surface will be at the output.
There are two versions. The first is a disk glued with pieces of sandpaper in the shape of a trapezoid. Each next petal is overlapped. With such a working surface it is effective to process wood. She is slowly fading away. The second is a flap disk, where the abrasive material is located radially. Suitable for processing workpieces in hard-to-reach places.
- Velcro grinding wheel. It is designed for repeated use. Only changes working surface from sandpaper, which is attached to the base with Velcro. Stores sell sandpaper with different size grains. This allows you to use the nozzle, both for rough and fine grinding.
Rules for working with angle grinders
- Work is carried out only in protective glasses and gloves. During coarse cleaning wood is better to cover the whole face.
- It is forbidden to remove the protective cover from the angle grinder.
- Work is done by holding the tool with both hands.
- Do not use a saw blade with a larger diameter than specified in technical documentation to the instrument.
- While working with the tool, it is recommended to lean on both feet.
Firms - manufacturers
There are budget cutting wheels Hitachi, Makita, Luga. They grind faster, vibrate more than more expensive ones. The quality of the surface treatment differs from the result of more expensive analogues. Professionals choose Kronenflex saw blades from Klingspor or Bosch. They grind more slowly, practically do not vibrate. Less likely to be destroyed by improper use.
- What are cutting wheels?
- Work tips
The angle grinder, popularly known as the grinder, is a worthy and versatile tool. It is this equipment that allows you to successfully perform cutting, grinding, polishing, sawing off almost any material. When choosing a grinder, it is extremely important to understand which model is recommended for use. The choice is largely determined by the main purpose of the proposed equipment. Metal and wood will require different types disks and a specific approach, because otherwise the work will not bring the desired results.
Wheels for an angle grinder: we start with market research
The range is striking in its diversity. What are grinding discs and how are their characteristics determined? To fully answer the question, the entire market should be divided into main areas.
- Abrasive coated wheels. This consumable tool is universal, therefore, with its help, any workpiece can be cut and polished with high quality. In addition, the possibility of polishing is assumed. The abrasive tool is not in vain considered one of the best.
- Disc for grinder with diamond-coated- one of the most common building tools. These products are segmented and solid, and for each option, its own area of \u200b\u200buse is defined. In each case, the possibility of high-quality and accurate cutting of durable materials is assumed, among which are stone, metal, concrete monolith.
- Saw blades on the grinder visually resemble modern models saws. However, other alloys are used for their production. Previously, products were rare, but now their prevalence is growing rapidly. Most the best option tungsten carbide grinding wheel.
Taking into account the variety of modern products, you should abandon the senseless and sometimes dangerous attempts to establish a circle from a circular to a grinder. Any circular discs designed for low speeds, and on the grinder there is a risk of warping or destruction of the tool.
How to choose a suitable angle grinder model?
When studying modern circles for an angle grinder, it is important to understand the basic principles for choosing a consumable for an angle grinder. What aspects to take into account?
Grinding wheels have several standard diameters. The most compact model differs in size in 115 mm. However, 125 mm grinder discs are of greater practical importance. Moreover, it was angle grinders for the 125th circles that were most widely used not only among the pros, but among home craftsmen.
Natural wood always turns out to be a specific heterogeneous material, therefore working with it requires special circles. Grinding discs, which are designed for cutting metal or concrete, are categorically not suitable for such processing. Otherwise, the grinder will be destroyed or burned by overheating.
When choosing equipment for grinding, it is important to note that the standard diameter of the installed shaft is 22.2 mm. Previously, there were several divisions, so labeling still plays an important role. Today, for example, a standard saw blade for woodworking has a diameter of 125x22.2 mm.
Although maximum size The angle grinder is 230 mm, such dimensions are undesirable when processing wood. Choosing an instrument with large diameter(from 150 mm), you run the risk of serious injury. The preferred dimensions are 115x22.2-125x22.2 mm. In addition, the 125th circles are able to cope with a fairly large range of production tasks.
Only if you understand the specifics of the equipment used, you can learn how to correctly select discs for a grinder for safe and efficient processing. natural wood.
What are cutting wheels?
Parameters that are used for classification cutting discs on wood:
- Disc diameter;
- Depth of cut wood;
- Characteristics of the teeth: shape, frequency, number.
What to consider when planning to use a cutting disc for a modern angle grinder?
- If saw cutting discs for wood grinders will be rarely used, and the type of wood being processed will be different, it is best to choose a model with variable beveled teeth.
- For sawing softwood and softwood, models with straight teeth are suitable. Such saw blades successfully process even the softest wood, guaranteeing a decent work result.
- Trapezoidal tooth allows universal use. When choosing such equipment, it is best to cut medium density chipboard. Other products can be used if desired.
What parameters should be taken into account for successful work with wood when sawing consumable tools are selected?
- Rounded cutouts are required, which will be made towards the shaft.
- The optimal disc thickness is 2 mm.
- The depth of the cuts made can reach 20 mm.
- Cutouts are empty, but in some cases they are filled with copper.
Equipment for grinding and peeling work
In most cases, working with materials involves the need not only for polishing, but also for grinding and roughing activities.
Cutting wood is a dangerous activity. At the same time, anyone who has necessary equipment. The most important thing is to understand the principles of technological operations.
Most often, flap discs are used for peeling grinders. Having carefully studied the specifics of the product, it is possible to understand how functional and effective it is.
The name gives an initial idea about the features of the device. consumable tool. Its working surface has several petals of sandpaper. This structure is comparable to fish scales. At the same time, this paper with a low roughness allows you to guarantee a soft sanding of natural wood. The quality and degree of processing depends on the grit of the material, so polishing and grinding can be carried out in accordance with the requirements.
The petal disc for the angle grinder is quite popular, but if desired, you can use another consumable tool.
For example, noteworthy sticky universal disc. Modern nozzles on the grinder provide for the possibility of a quick change of Velcro. The price of sticky discs used for basic operations is lower than that of a solid petal one, but the service life is also shorter. If, nevertheless, a universal sticky circle is chosen for the grinder, then it can be used for processing and grinding various materials, which confirms the demand for this product.
A polishing and grinding tool may be of high quality, but it cannot guarantee the successful completion of the job. What is the reason for this? It's very simple: the wood used must be thoroughly dried. Moreover, raw wood cannot be used. Otherwise, the result will be unpredictable. When choosing a disc for wood, you need to be sure that the material being processed has the right properties.
Sometimes cleaning work is required to remove the old layer of paint or varnish, fungal infections. Polishing and grinding tool always show themselves at a decent level only if the wood is prepared according to technological requirements. Bearing in mind that polishing and grinding discs for the grinder are not provided for initial processing, roughing attachments are required.
Choosing similar nozzles for the grinder, maximum benefit they can be felt when cleaning old surfaces that have been repeatedly painted. This is due to the following factor: the nozzles are made in the form of a metal plate, which is densely dotted with wire bristles located closer to the outer circumference, radially or perpendicular to the disk.
Work tips
Finishing work begins only after successfully giving the workpiece a preliminary outline. The results largely depend on what types of nozzles are used to perform the tasks.
Angle grinders are used in the form of a cutter, as well as polishing and grinding attachments. Nozzles on the grinder increase the functionality of the device used.
So, how to carry out the polishing and grinding process when processing wood? What tools do you need to be successful?
- Brush cord. These tools are ideal for rough grinding tree. It is assumed the possibility of successful leveling of wood, with the addition optimal shape product.
- End discs allow easy turning of workpieces. In most cases, such work is required for bevel cuts. Work end disk resembles the interaction of the workpiece with the saw.
- Petal sanding attachments- this is the most popular option used Supplies. The characteristic of the tool determines the possibility of processing various workpieces, including natural wood. It is important to note that the cleaning of complex wooden objects is carried out only using radial strips.
- Felt circle - allows you to achieve minimal roughness, processed products. The basis is pressed wool, fine-haired, semi-coarse-haired and coarse-haired. Felt working tool allows not only to carry out quality processing wood or other material, but also to give a perfectly smooth surface, comparable to a mirror.
- A wheel for a grinder designed for grinding is often compared with a disc of the same name. It is important to note that the Velcro circle is universal tool, which has a wide range of applications. Various fixtures for wood processing certain tasks, but grinding wheel sometimes surprises with its versatility and high level efficiency.
- The chain disc for wood is one of the most productive, but rough ways of processing natural material.
When choosing equipment, it is desirable to take into account not only the diameter, but also each accompanying informative designation. The inscriptions will allow you to determine the purpose of the tool and follow the recommendations during operation. Marking discs, circles and nozzles for grinders is a guarantee of a successful result.
A modern grinder is a convenient and effective tool. For quality work required special nozzles and discs that allow you to effectively process wood, metal and any other material of interest.
