How To Grind An Angle Grinder Wood

Choosing a grinding wheel for wood

The most common angle grinder accessories required for these purposes are:

  • Roughing, stripping. needed at the preparatory stage, when it is necessary to remove the old varnish, paint. The design of the discs assumes the presence of bristles made of metal.
  • Cord brushes. have large abrasive particles. They are useful for the initial stage of processing.
  • End. used on the edges of the workpiece, oblique cuts.
  • Petal. for the final gentle sanding, while the first three types are for coarser. It is in the form of a plate on which abrasive parts are located, which are superimposed on each other. This arrangement slows down the wear of the accessory.

How To Grind An Angle Grinder Wood

How to properly sand an angle grinder wood. 6 steps of sanding

Can a wood part or floor be perfectly smooth with an angle grinder? Of course yes! This instruction will tell you how to do it yourself so that the result will please.

Filling gaps

When the initial sanding process is over, it is time for other work on the wood flooring. Doing everything with your own hands is not difficult, but it takes a long time, since it is almost "jewelry" work.

So, the task is to eliminate the smallest defects:

  • Requires a minimum grit accessory that the operator needs to walk through the gaps.
  • The most difficult to reach places will have to be handled.
  • It is necessary to remove the resulting dust from time to time to improve visibility.
  • Apply putty to the surface.

Primary grinding

For this processing stage, grinding and polishing discs are used. If such an accessory was not at hand, then you can use an ordinary circle, to which coarse-grained emery is securely attached.

Grinding technology

It is not recommended to process the entire area of ​​the disc, as beginners often do, as a result, leaving traces of the circle on the surface. Only the upper sector of the nozzle is used for grinding. It is necessary to move the angle grinder along the grain of the wood. This simple trick will help you leave no traces at all or keep them to a minimum. The main thing is to find a comfortable anchor point so that your hands don’t get tired quickly.

The sanding process for wood products (including floors) of the angle grinder can be divided into six steps.

Fine grinding

For such sanding of wood on a disc, an angle grinder is preferable. a flap version, for example, P80 SMT, with a low level of grit.

What you need to know when working with an angle grinder

Renovation of flooring (parquet), furniture or the facade of a house, where there are wooden structures or individual elements, is carried out using an angle grinder for grinding, which is equipped with different attachments. Therefore, it is not surprising that an angle grinder for polishing wood is a popular power tool among professionals and in everyday life. But in order to choose the right tool for the job, you must carefully examine the wooden surface for the presence of fungus, cracks and irregularities. To help beginners who want to know "How to grind wood an angle grinder" is provided.

For each model of an angle grinder, a grinding attachment must be selected without fail, only in this case safe work and high-quality surface treatment will be guaranteed. Before you start working with an angle grinder (sanding wood), you need to make sure that the disc is properly fixed. Move the angle machine over the surface smoothly and avoid vibration of the tool.

Sanding wood floor

When doing major home renovations, it is often necessary to sand the wood floor. First of all, it is necessary to remove all the protrusions using the appropriate tools. And only after that the wood is finished with the use of grinding wheels with the required grain.

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In order to properly grind wood products, you should know that there are many methods by which you can bring the workpiece to the desired state. Each of these methods has advantages and disadvantages. To work well, you need to have some experience, and also do not forget about personal protective equipment.

Gentle grinding wheels and applications

For sanding wood, an angle grinder is used with universal attachments with a special gentle coating. Such mechanical processing is intended for the production of certain works:

  • The flap disc is used for grinding the solid. The design of this segment lives up to its name. Its work surface is equipped with a large number of trapezoidal sandpaper petals, which overlap each other like fish scales (overlapping the previous row by three quarters). With this arrangement of petals, abrasion of the nozzle is much slower.

This is the most common type of angle grinder attachment for grinding wood, which performs soft surface treatment, and the tool itself is less traumatic. To achieve the desired degree of processing and high quality, the disc is selected according to the grain size. The size of the abrasive determines how quickly and efficiently irregularities on a wooden surface will be removed.

The sanded coating at different stages of processing may remain a little rough or be perfectly even without the slightest flaws and snags. Achieving the final result can be achieved by successively changing from abrasive discs with a coarse grain to segments for finer processing. Therefore, you will need several discs per angle grinder for grinding wood, which will be changed step by step.

  • Wheels for soft grinding. The universal accessory for an angle grinder for grinding wood appeared on the market relatively recently and is distinguished by its special design and high functionality. Roughing work is intended to be performed with replaceable discs with the desired grain size, which are attached to the sticky base of the nozzle. In this regard, the abrasive tool received a corresponding name. sticky disc.

The main advantage of a wheel for an angle grinder for grinding wood is a quick change of a worn replaceable disc: the whole procedure takes place without removing the main nozzle, which is fixed with a nut. First you need to purchase a Velcro attachment for grinding on an angle grinder, so that later without any difficulties you can replace the worn abrasive segment.

What it is?

An angle grinder or angle grinder is a tool often used in construction and renovation work. If the house needs minor repairs, there is no point in buying powerful and expensive construction equipment. But such a car will be useful and relatively inexpensive to purchase. The versatility of a modern tool is its main advantage: with the help of an angle grinder, they saw and cut, grind and level surfaces. The principle of operation of an angle grinder is simple: operations are performed by rotating attachments.

Discs are divided into three types. sharpening, cutting or grinding (roughing). The operations are different in purpose and complexity, sometimes one machine has to process materials of different hardness, as a rule, it is stone and steel joints, as well as wood. Refurbished and processed wood parts, windows, floors and furniture are sanded.

The attachment for an angle grinder for grinding wood is a replaceable wheel, similar to that for a circular saw. The roughing cutter for primary grinding is made of durable metal, has teeth and is matched to the diameter for each angle grinder. The size of the teeth is determined by the thickness of the wood layer. The shape of the tooth is also important. Variables are suitable for all types of wood, and trapezoidal ones are used only for soft varieties. You can also roughly process the material with discs with straight teeth.

It is necessary to saw wood before processing with other, sawing cutters. They are monolithic, made of high-strength sheet steel. Some varieties are sprayed on the teeth.

Features of choosing a grinding wheel for wood

For those who do not know "Can an angle grinder work on wood?" this article will be helpful. To grind and polish wood products or large solid surfaces, you will need to purchase the appropriate attachment. a circle. For grinders of different sizes, nozzles are selected, designed for a certain speed of rotation. Special discs designed for wood processing must be carefully selected. The disc must correspond to the size of the tool, a special nut is used to secure it.

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Woodworking Angle Grinder

Using an angle grinder when grinding concrete

With an angle grinder, you can clean not only the wooden elements of the house. It can be used when you need to level concrete products with your own hands. The most commonly performed concrete grinding is an angle grinder.

Before starting work, let the poured floor stand for about two weeks: during this time, the concrete will gain the necessary strength. Before grinding the concrete floor, its surface should be covered with a special compound, which, entering into a chemical reaction with calcium hydroxide, forms a mineral. binder. It is able to close the pores in concrete, which will give greater strength to the material and resistance to moisture. Floor sanding is performed with diamond cups specially designed for concrete grinding.

Dry or wet sanding?

For intermediate sanding of finishing coatings. stains, varnishes, polyurethane, etc. Traditionally, two techniques are used. dry or wet.

Dry sanding increases the efficiency of the abrasive and allows better control of the work process, which is especially important in the intermediate sanding stages of delicate coatings. The disadvantage of this technique is the rapid clogging of the skin. Partly this problem is compensated by sandpaper with an anti-clogging stearate coating.

When wet sanding wood products, use mineral oil, white spirit, or ordinary soapy water as a moisturizer. Abrasive with this technology clogs up much more slowly and, accordingly, lasts longer. But the mess from foam and chips makes the sanding process much more difficult. It becomes necessary to constantly wipe the surface and carefully monitor the result of grinding.

How to choose sandpaper for woodworking?

There are quite a few characteristics by which sandpaper is classified. But the main and most significant parameter that should be guided by when choosing a skin is the size of its abrasive grains. the so-called N. Coarseness index. For specific tasks when working with wood, a certain type of grain is chosen.


Practice shows that a master needs a set of five types of abrasive to perform basic tasks:

  • P150; P180; P240 (wood processing before finishing);
  • P280; P400 (intercoat and final sanding of finishing coats).

You can read all about the intricacies of choosing sandpaper in this article.

About sanding pads and making them yourself

Sanding pads (grinding). an irreplaceable assistant in the arsenal of the joiner. These uncomplicated devices ensure uniform contact of the sanding paper with the processed surface, increasing the speed and quality of the work performed. Using such pads, you will significantly improve the quality of grinding, extend the life of the abrasive, and avoid irreparable defects in the form of grooves and rounded ends.

There is no need to spend extra money to acquire such a grinding tool. It will not be difficult to make it with your own hands from dense foam or wooden scraps. Check out some simple sanding pad designs in our gallery.

What are the benefits of hand grinding?

Sanding wood by hand, although it requires a lot of labor, in return provides a number of important advantages: less aggressive processing, better control over the process and high quality surface treatment in hard-to-reach places. in corners, on smooth bends and other reliefs of any complexity.

Manual technique is indispensable for interlayer sanding of finishing coatings, since it provides the most delicate work and eliminates the risk of rubbing the applied finish. When using the same abrasive, hand sanding guarantees a better finish than sanding with a sander, angle grinder or drill.

The intricacies of flawless hand sanding. How to sand wood properly?

Grinding technique. The wood is sanded with vigorous movements along the grain or at a slight angle, but without excessive pressure on the block. Movements should be as light as possible, on the second or third pass with a fine-grained sandpaper with practically no pressure.

Surface preparation for finishing. When preparing a tree for applying a finishing coating (varnish, oil, stain, polyurethane, etc.), start working with an abrasive P120 or P150 (depending on the nature of the irregularities). Then go to grit P180 and finish with P240 grit.

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Intermediate sanding of coatings. In case of layer-by-layer application of finishing coating, intermediate sanding of each layer is carried out with fine-grained sandpaper P280. For final polishing use P400 sandpaper. To remove the slightest roughness of the glossy finish, use a P600 grit.

The exactingness of finishing coatings for grinding. Matt types of coatings are not as demanding on the quality of sanding as glossy ones. At the same time, the dark stain will expose all the flaws of unfair grinding.

How and how to grind wood

When carrying out various types of repairs, at the time of production of furniture or wooden things, it is often necessary to sand the wood. There are quite a few methods that can be used to sand wood. They have their advantages and disadvantages, some involve the use of a hand tool.

You can sand wood:

  • When using an angle grinder, you can bring the condition of the tree to the required state. The angle grinder has an abrasive material represented by a circle;
  • A conventional drill can also be used to bring the wood surface to the desired condition;
  • The surface sander can become the main structure for sanding wood;
  • Belt sanders are used to sand wood with an abrasive material;
  • Can also be sanded using hand tools.

Despite the fact that the natural material in question has a rather high structure hardness, quite a few grinding methods can be used, some of which we will talk about in more detail.

Surface Grinding & Angle Grinder (Angle Grinder)

Angle grinder (angle grinder) is a multifunctional device that is also used in this situation. For this, special circles are used. Petal circles are made from sandpaper, which is attached to a flat surface. In this case, the circle can be of different diameters, with a different grain size. When choosing, the following recommendations can be highlighted:

  • To remove paint, take a coarse-grained circle;
  • If it is necessary to remove a thin layer of wood, you can take an abrasive that has an average grain size;
  • In order to give the wood a special smoothness, you can use a fine-grained abrasive.

However, it should be noted that the removal of the surface will not be carried out along the fibers. At the same time, it is almost impossible to regulate the rotation speed and feed. You can use an angle grinder when there is no need for a high performance.

In order to carry out sanding of wood, you can use special equipment, which is called a surface grinding machine. The features of this include:

  • Wood is combed back and forth by abrasive material.
  • Sandpaper moves at high speed, which allows you to achieve good results when working.
  • Unlike other methods, in this case the grinder carries out processing along the grain, which determines the high quality of the product.

The design is quite simple, it allows you to achieve good quality. But when changing large surfaces, the grinder has little efficiency. Certain models have a rather large surface to which the skin is attached, but it is quite difficult to provide the necessary force in this case.

Belt sander

The belt sander is the most productive tool that can be used for processing wood with high productivity. The jetting technique also has a high productivity.

Dewalt Belt Sander

The work of the structure is carried out using a circular sanding belt, which can have various degrees of grain. The design carries out the removal of material along the fibers. However, do not forget that you cannot grind the corners with this design. The tape can be used for a large amount of work: floor, walls, furniture, and so on.

Despite the great automation of work, it is possible to provide mechanical impact by manual method. This is due to the fact that the removal of fibers can be carried out in the desired direction. It is also possible to carry out corner processing. However, in order to achieve the desired result, you need to have certain skills. The work is very difficult and time consuming. Therefore, hand tools are very popular only in certain cases.