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 a round metal base 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. The grinding chain wheel is 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
it finishing wood, designed to remove small irregularities 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. Depth and quality of grinding depend on the grain size 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
- Works are carried out only in goggles 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 larger diameter than indicated 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.
If you are trying to understand whether it is possible to saw a tree with a grinder, then the answer to this question is unequivocal: it is possible. But many will not do this, because. too many people get injured precisely from using the grinder as a saw for wood, which is correctly called an angle grinder.
First of all, this is due to the rather high speed of its rotation, for which most saw blades are simply not designed. But who pays attention to this when you need to do the work, and there seems to be suitable tool, and to the saw blade for wood there is also a compensator ring right size applied. Moreover, the protective cover is removed for the convenience of work, which is absolutely impossible to do.
But, we won’t talk about injuries, but we’ll talk about how and how you can process (including sawing) a tree with the help of an angle grinder, but first, about the difficulties of working with a grinder with wood.
Difficulties when working with a grinder
About the discrepancy between the turns of the grinder and circular saw we mentioned, but users who have angle grinders with speed control can say that this factor has been taken into account, and any saw blade for wood is suitable for their tool.
Of course, by setting the number of revolutions of the output shaft of the grinder, corresponding to that indicated on the marking of the saw blade, they significantly reduce the risk of injury during operation, but do not completely eliminate it. This is primarily due to the material itself, or rather its structure and heterogeneity.
Even in different places of the same trunk, the tree has different hardness, not to mention the inclusions of viscous resin, the possible presence of metal that ended up in the thickness of the wood: from pellets and bullets that fell into the tree during a hunt, to a wire ingrown into it, with which branches were tied. Do not forget about the knots that are present in almost all types of wood.
When meeting with the listed obstacles, the saw blade brakes sharply and the angle grinder, by inertia, simply pulls out of the hands, and when passing through a hard section, it rushes forward with a vengeance.
When meeting with metal, there is a high probability of chipping of a hard-alloy tooth, which can be captured by the next one and thrown out at the speed of a bullet. Well, if in the area of action of the protective casing.
A person who decides to cut a tree is in even greater danger, because at the same time the grinder must be put on its side, from which the usual and comfortable grip changes, which means that the grip weakens.
Discs for grinders designed for cutting wood
1. Chain discs and cutters based on them.
Structurally, they are designed so that even when biting a chain similar in structure to saw chains for chainsaws, the base can rotate, so the tool will not be pulled out of the hands. These discs are primarily intended for outdoor processing wood: sawing cups in log cabin logs, removing bark, modeling, but you can also saw with them, especially with a size 230 disc, which costs a lot, but compensates for its cost with safe work.
2. Saw blades for wood with a small number of teeth.
To enlarge an image, click on it.
Such discs indicate the maximum speed and should be selected based on the parameters of your tool. Such a large pitch between the teeth compensates for the high speed of the grinder and makes sawing much safer than working with standard saw blades, but metal in wood should also be wary. You can see their work in the video:
In addition to wood, they also cope with plastic and aerated concrete.
3. Tungsten carbide discs.
This is a novelty in the field of tools for angle grinders, which allows you to freely cut wood without fear of metal inclusions, operating at rotation speeds up to 12200 rpm. She is the only one who gives an absolutely positive answer to the question: is it possible to cut a tree with a grinder. You can see for yourself by watching a short video about the operation of this disk:
Needless to say, these discs cut more than just wood.
4. Other tool, more or less suitable for cutting or other wood processing with a grinder.
About all in order:
a) Rotarex manufactures discs for cutting wood. In terms of their performance, primarily safety, they are inferior to those listed above, but are clearly more suitable for sawing wood than circular discs;
b) cutters for wood intended for outdoor processing wood angle grinder, can also saw not thick wood;
c) disk-planer - a nozzle for an angle grinder.
d) a saw for creating wooden sculptures with a configuration of cutting elements remotely resembling links saw chain, not quite designed for sawing, but will cope with it to some extent.
Bulgarian for grinding wood
But this work, incl. on wood, just for this tool. Only a small photo selection of nozzles for angle grinders for grinding is evidence of this.
- for rough grinding.
- the most common type of nozzles for grinding angle grinders, the purity depends on the size of the abrasive grain on the petals.
- easiest way to change grinding wheels using a nozzle-holder with a sticky base, on which replaceable abrasive wheels with different grains or even polishing bristles are attached.
- polymer abrasive silicon carbide with nylon.
- sanding belt.
And instead of a conclusion. Can a grinder cut wood? Depending on what and depending on what. If you cut a thin dry branch, then there are practically no restrictions, and if you have to do more serious work, see above.
Dear readers, if you still have questions, ask them using the form below. We will be glad to communicate with you;)
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 are made saw blades from 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 also produce cutting wheels for wood specifically for angle grinders, for example, the Bosch cutting wheel. Their design is significantly different from the design of discs for circular saws. 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
It is possible to use the 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, various types of nozzles can be used:
- 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 align the edges of parts, which is often required for oblique cuts of workpieces. They make a great file replacement.
The widest range sanding attachments- at 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 relief surface of a wooden product is complex, then petal discs with a radial arrangement of abrasive strips.
Using sandpaper or sandpaper 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. Typically, this is a wire brush attached to 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 grinders Graff Speedcutter 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 funds personal protection
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.
An angle grinder, which is commonly called a grinder, is not intended for processing wooden products. Even with proper selection of working circles, such operations are unsafe for health. Manufacturers producing discs for wood grinder 125 refer to this aspect in operational conditions, but not all people pay attention to this warning.
Working discs for angle grinders
In modern industry for the grinder, several types of discs are provided:
- Abrasive wheels, which are divided into grinding and cutting wheels, are quite fragile if they are not used for their intended purpose. The range of operations for which they are designed is performed perfectly.
- Discs with diamond-coated that are used to process building materials and hard rock stone. Subdivided into solid and segmented. Segmented discs are more suitable for grinders for metal.
- Working circles for circulars, which experts do not recommend using in the processing of wooden products. It is better to choose saw blades adapted for the grinder, which are also popularly called a milling cutter.
- Chain discs for grinders. Although outwardly they resemble shots from horror films, they cope with wood operations. the best way. They consist of a circle, along the edges of which a chain is applied like on a chainsaw. High-quality steel allows you to perform various operations with lumber, or rather, milling, modeling, stripping and cutting holes in logs.
When choosing wood discs for a grinder, you need to pay attention to the following points:
- the diameter of the circles should not exceed the diameter for which the grinder is designed;
- select the main details should be only those that are allowed for manipulation with the tree;
- sometimes you have to remove the protective cover, which is unsafe.
Therefore, you should try to select only those working circles that are provided for these tools, taking into account the diameter of the grinder and the material. Experimenting with power tools at high speeds may result in injury.
The nuances of using each type of circle
Diamond wheels can be called universal because they are suitable for almost any material. For processing building stones and other hard rocks, this disc is ideal. But segmented diamond-coated wheels are not used for metal processing, and they will not cope with wood either. Lumber usually hides many surprises in the form of knots and structural heterogeneity.
Metal abrasive discs 125 may be used to cut through wood. But at the same time:
- the thickness of the material should not exceed 4 cm (and it will have to be cut on both sides);
- it is necessary to take a break regularly to check the circle;
- change it at the slightest sign that the part has led;
- change a worn disk in a timely manner.
And you should also be prepared for smoke and the smell of burnt wood. It can take more circles to process lumber than a steel plate.
The use of circular discs for an angle grinder 125 is dangerous to health and life. Although there are advisers on how to adapt a circle for a circular grinder, it is better to refuse such recommendations. If only because the speed of rotation on the angle grinder is higher, because of which there is a danger of breaking the circle and increased vibration of the power tool. Circular circles are very fragile, and during their use on the grinder, there is a possibility of injury from flying fragments.
In such cases, it is better to use a milling cutter for a circular saw. It is distinguished by the shape of the tooth and the presence of special expanders, which eliminates its jamming, minimizes the appearance of a kickback and the occurrence of vibration.
For lumber processing, it is best to use chain discs on wood. The tool steel used for their manufacture is able to withstand loads and not shatter into fragments.
The service life of such a circle with a chain is several times longer than that of a cutter, in addition, it can always be sharpened. But the price of chain discs for a wood grinder 125 or 230 exceeds 2 thousand rubles.
Safety first!
Convenience at the use of angle grinders in operations with wooden material overshadows safety.
However, you can minimize the risk by observing some conditions:
- When working with a grinder, use safety glasses and overalls.
- The protective cover must not be removed.
- Do not use a defective wheel in work, as well as discs on which there are even the most minor defects.
- When working with a grinder, you should hold the tool with both hands.
- It is impossible to lay the grinder until the rotating part stops completely.
- The cord from the tool should be at a distance from the working circle.
- Refrain from planned actions with a grinder if you feel unwell and in a state of intoxication.
- Use wheels that are strictly suitable for the diameter of the tool and designed to work with the selected material.
These rules will help to avoid unnecessary injury when using the grinder in woodworking.
When choosing working discs for a grinder when buying, you should remember that it is better to spend a significant amount once, but to purchase a circle with a chain for a long time. It will help to perform many operations when working with lumber, as well as raw logs.
If the wheel is needed for a one-time use, you can opt for a milling cutter. Such a disc can also be used in working with aerated concrete and other materials. The cost of the cutter is lower than the chain cutter, but also exceeds the price of the abrasive device.
The most extreme case is the purchase of a cutting abrasive disc. But you should be prepared for strict observance of safety precautions: there is no need to swallow smoke and “enjoy” the aroma of burnt wood. In any case, such savings can cause irreparable harm to health, as well as lead to additional costs.
Quite often, the grinder is used for processing various kinds material. Some sources claim that it is strictly forbidden to work with this power tool on wood, while others say that it is possible, but only taking into account some nuances. One way or another, an angle grinder is used in carpentry. Therefore, the question of using a wood cutter for a grinder remains relevant.
The saw blade with chainsaw chain elements allows you to cut boards up to 40 mm thick, and it is important to be extra careful. Violation of the rules can lead to injury:
- Protective covers on the tool must not be removed. At large diameter disks exceeding the dimensions of the casing, the grinder cannot be used.
- It is necessary to work with an angle grinder in compliance with the speed indicated on the cutting tool. If they are exceeded, the chain may slip, which will lead to the scattering of its constituent parts.
- Protective goggles and thick gloves are a must. It is also recommended to work in dense tarpaulin clothing.
It is forbidden to work as an angle grinder with installed disks that are intended for circulars. Because it poses a threat to human health and life.
This ban also applies to diamond cutting discs for concrete. To work with wooden products they are not safe because they are not designed for that. The efficiency indicator from their use is quite low, considering the cost of disks. And also there is a possibility of charring the product and simply ruining it.
And most importantly, there is a possibility of such a disc jamming at the processing site, which will lead to the tool flying out of the hands and possible injury.
With such a disc for the grinder, which is shown in the figure below, you should work as carefully as possible when processing wooden materials. Its design provides for protection that prevents jamming of the side teeth, which contribute to the expansion of the cutting width. The disk has a diameter of 115 mm, and thanks to its dimensions it is possible to work with the protective cover installed.
Some home-grown "masters" practice fitting standard saw blades for a circular saw to an angle grinder. All work is done with protective covers removed. Often the ending of such experiments is rather tragic. Unfortunate masters receive serious injuries that threaten life.
But despite this, the construction markets are full of offers that allow you to purchase. Inexperienced craftsmen are convinced by sellers that when correct use there are no risks associated with such tools. All this is true, exactly until the moment when nothing bad happens.
No professional shops will ever sell a person a grinder disc that may also be suitable for working with a circular. For such sales, if the buyer is injured, the seller may be held criminally liable.
The list of the main reasons why the use of a circular saw to work with an angle grinder is unacceptable:
- discs are designed to work at low speeds, the material of such a cutter is quite fragile. In the process of work, there is a possibility of the tool breaking into small pieces or the spalling of the teeth soldered on the disk, which fly off at great speed;
- the wood has a rather viscous structure, in connection with this, biting in of the teeth occurs in an uneven way, which leads to vibrations and mobility of the tool. This can lead to loss of control of the angle grinder and cause serious injury;
- jamming of the discs occurs during the working process when processing wood, the tool can be pulled out of the hands. Please note that the included tool with a rotating disc is unpredictable.
- uneven loads caused by work on wooden surface may cause the power tool to overheat, resulting in damage to the power tool.
The best solution is to manufacture a stationary sawing machine, on which the grinder will be securely fixed. absolutely simple, you need to prepare only the main components for this equipment. But it is definitely worth it, you will not only reduce the time for processing products, but also protect yourself from bad consequences.
Video "Wood cutter for angle grinder"
An informative video from an expert about the Speedwood LEMAN saw blade for an angle grinder.
We carry out rough processing of wood with a grinder
But, despite the existing warnings, it seems possible to process a wooden blank with an angle grinder. This requires the use special nozzles which are manufactured in working conditions, and strict observance of safety regulations in the process of working with the tool.
Using planer discs for grinders
Roughing a log house involves the use of special discs that allow you to perform the function of a planer. This kind of wood processing using angle grinder considered one of the safest if you follow the operating instructions. The device is a good alternative to a carpenter's axe.
The nozzle is used without the installation of protective covers, since the fact that it can be destroyed during operation is completely excluded. You cannot use such a disk if it has an upward position.
During the operation of the grinder, on it in without fail it is necessary to provide for the installation of a handle that will allow you to hold the tool with two hands.
It is also necessary to have tight overalls and personal protective equipment that can protect open areas skin. When cleaning wood, you may encounter large chips that can easily injure the skin. One of the positive side effects from the use of such a power tool is considered ease in chopping chips or large sawdust, if any are necessary for household needs.
Application of grinding discs
To remove the bark from a tree trunk, and give it a primary shape for blanks, a number of special peeling nozzles are used for corner grinder.
Thanks to this chain circle it is possible to clean the trunks from bark or small knots. And also the required shape is given to the blank material for further processing using more precision tool. Such devices can replace axes for carving bowls in logs for the construction of buildings from a wooden frame.
It is also possible to use this disc as a cutting wheel, but the resulting cut will be jagged and the material loss is too high due to the large thickness of the cut.
Using milling cutters on angle grinders for working with wood
After completing the roughing, you should proceed to the next step in the processing of wooden blanks - milling. For this purpose, some types of special nozzles are used.
The size of the abrasive on the discs can be completely different. Using this cutting tool should take into account its purpose. By means of such mills, it is easy to carry out giving of a final form to preparations. Some craftsmen use such nozzles to finish the wood, and the results from such work are quite good.
Almost similar types of discs are a mechanized rasp. They are considered relatively safe tools that do not require special precautions and compliance with certain conditions. You just need to take care of the protection of the eyes and respiratory organs.
If you need to perform the usual cutting of wood materials, then it is better to use simple disk, chain and reciprocating saws, not Bulgarian. Also, the task can be effectively performed with an electric jigsaw.
It should be noted that the alternative electric tools for sawing boards and logs is homemade equipment. Fabricate to run simple tasks quite simple, so it is not necessary to use dangerous and expensive tools for simple tasks.
Milling a tree with a grinder: which cutters can be used
It requires careful observance of security measures. Similar work with a cutter using an angle grinder belongs to the class of dangerous, but acceptable when correct execution relevant recommendations.
A cutter on a grinder for working with wood is used to make grooves, rough edge alignment, cut out bowls for log cabins, and even for sawing blanks. It is possible to use only those cutters that have a special design that excludes the process of jamming and tilting of the power tool due to the heterogeneity of the wood. When using it, it is recommended that you read the instructions without fail, in particular about sections with maximum revolutions and the direction of movement of the cutter in relation to the position of the angle grinder.
Milling attachments for angle grinders are not inferior in their range to attachments for manual milling devices. Naturally, it is almost impossible to achieve a similar quality of material processing with a grinder, but it is quite possible to make a selection of suitable nozzles in order to give a suitable shape to the product.
Video "Is it possible to cut a tree with a grinder"
Video review on the use of a grinder for cutting boards and beams. How to cut a tree with a grinder and whether it is possible to do it - you will learn in this video.
