Wood trimming disc for grinder. Grinder disc for wood: general characteristics and types. Cutting wheel. Grinding and roughing works. Milling wood with a grinder: what cutters can be used
Corner grinder, which is popularly called an angle grinder, is not intended for processing wooden products. Even with the proper selection of workers, such operations are unsafe for health. Manufacturers producing wheels for grinders on wood 125 refer to this aspect in operating conditions, but not all people pay attention to this warning.
Working discs for angle grinders
In modern industry, several types of discs are available for grinders:
- Abrasive wheels, which are divided into grinding and cutting wheels, are quite fragile if used for purposes other than their intended purpose. The range of operations for which they are designed are performed perfectly.
- Diamond-coated discs used for processing building materials and hard rocks. They are divided into solid and segmented. Segmented discs are more suitable for grinders for metal.
- Working circles for circular saws, 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 scenes from horror films, they cope with wood operations in the best possible 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 bark and cutting out recesses in logs.
When choosing wood cutting discs for an angle grinder, you need to pay attention to the following points:
- the diameter of the circles should not exceed the diameter for which it is designed grinding machine;
- select the main parts only those that are allowed for manipulating wood;
- sometimes you have to shoot protective cover, which is unsafe.
Therefore, you should try to select only those working wheels that are provided for these tools, taking into account the diameter of the grinder and the material. Experimenting with high-speed power tools can result in injury.
The nuances of using each type of circles
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 cannot handle wood either. Lumber usually hides many surprises in the form of knots and uneven structure.
You can use 125mm metal abrasive discs to cut wood. But at the same time:
- the thickness of the material should not exceed 4 cm (and it will have to be cut from both sides);
- it is necessary to take regular breaks to check the circle;
- change it at the slightest sign that the part has failed;
- Replace a worn-out disc in a timely manner.
You should also be prepared for smoke and the smell of burnt wood. Lumber can take more laps to process 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 rotation speed on an angle grinder is higher, which is why there is a danger of the wheel breaking and increased vibration power tools. Circular wheels are very fragile, and when using them on an angle grinder, there is a risk of injury from flying fragments.
In such cases, it is better to use a cutter for a circular cutter. It is distinguished by the shape of the tooth and the presence of special expanders, which eliminates jamming, minimizes the occurrence of kickback and vibration.
It is best to use for processing lumber chain disks on wood. The tool steel used for their manufacture is able to withstand loads and not break into fragments.
The service life of such a wheel with a chain is many times longer than that of a milling cutter; in addition, it can always be sharpened. But the price of chain disks for a wood grinder 125 or 230 exceeds 2 thousand rubles.
Safety first!
Convenience when use of angle grinders in transactions with wooden material pushes security into the background.
However, you can minimize the danger by observing certain conditions:
- When working with an angle grinder, use safety glasses and protective clothing.
- The protective cover should not be removed.
- Do not use a faulty wheel, or disks that have even the slightest defects.
- When working with a grinder, you should hold the tool with both hands.
- You cannot put the grinder down until the rotating part has completely stopped.
- The cord from the tool should be located at a distance from the working circle.
- Refrain from planned actions with an angle grinder if you are feeling unwell or in a state of intoxication.
- Use wheels that strictly match the diameter of the tool and are designed to work with the selected material.
These rules will help you avoid unnecessary injuries when using a grinder for woodworking.
When choosing working disks for a grinder when purchasing, you should remember that it is better to spend a significant amount once, but on long term purchase a circle with a chain. It will help you perform many operations when working with lumber, as well as unprocessed logs.
If the circle is needed for a one-time use, you can opt for a cutter. This disc can also be used when working with aerated concrete and other materials. The cost of a cutter is lower than that of a chain cutter, but also higher than the price of an abrasive device.
The most extreme case is to buy a cutting abrasive disc. But you should be prepared to strictly adhere to 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 and also lead to additional costs.
The modern grinder is often used to perform various works in the process of renovation and construction. Such a tool can be called universal. The grinder easily cuts almost any object, grinds, sharpens, polishes and peels. To perform work using a grinder, it is necessary to select the right discs, taking into account the type of tool.
Grinder wheels for wood
An angle grinder (grinder) performs a wide range of different operations using rotational movements of replaceable discs or attachments. The most commonly used circles are metal, stone, and wood. All of them are divided into three main groups:
- Cut-off
- Grinding (cleaning)
- Grinding (grinding)
Each group has its own types of discs, which are designed for a specific type of work, including wood.
Woodworking discs look like a regular circular saw; you need to know how to work with them, since careless movements or inattention can lead to serious injuries. The protective casing on the disk serves as good protection, so it is better not to remove it from the tool and, for your own safety, use a wheel with fine teeth. According to experts, it is best to work with wood attachments without strong feed and try to permanently secure the angle grinder using a special device for this.
The most common ones can be called wood circles - cutters, they look like metal circles with teeth and are specially designed for cutting wood. The circles can be different in size; depending on the thickness of the timber, the diameter of the cutter is selected.
For cutting wood, only saw blades and right choice provides a wide range of possibilities. If you know how to use the tool, you can even cut at an angle.
Disc production
Saw blades for grinders on wood come in two types - monolithic and with carbide tips at the ends of the teeth. If there are such soldering on a saw blade, then they wear out less quickly, do not require wiring, and perform better cuts, but they need to be sharpened only on special machines.
For the production of saw blades, only carbide sheet steel. She guarantees the product high stability to mechanical damage and temperature changes. During the production process of the saw wheel, much attention is paid to the weld; it connects the body of the disc with the teeth, so its quality is always under control.
The speed and frequency of cutting is influenced by the number of teeth on the wheel; the higher the frequency of the teeth, the better the quality of wood cutting, but at the same time the speed of work decreases. When there are fewer teeth on the cutter, the speed increases, but the cleanliness of the cut deteriorates.
Impact of disc teeth
The final result of working with wood depends not only on the frequency of the teeth, but also on their shape. Universal saw blades can be called variable tooth cutters, they work well on hard and soft woods. Products with trapezoidal teeth are only suitable for working with soft materials. For draft Wheels with straight teeth are suitable.
During processing valuable species For wood, you need to use thin saw blades; they are great for cutting or processing expensive wood. There are also “thin +” discs, which use a material with an additional bumper; it reduces the blocking of the saw during its operation. This saw blade is suitable for longitudinal and cross cutting of wood, as well as other materials. Similar materials with high cutting precision are also used in furniture and wood processing production.
Features when working with saw blades
When working with a saw blade on wood, you need to exercise special care and skill, best wear a special uniform and safety glasses and gloves. The difficulty of working with wood lies in the fact that wood is easier to cut, so it is necessary to maintain control in the operation of the tool. Experts recommend using tools of low power and speed when working with wood, the most best option- 1,000 rpm.
The quality of the grinder and the cutter are no less important; the final result of the work and its safety will depend on this. It is best to give preference to a proven tool and hear the opinion of experts to be sure of a positive result.
Grinding wheels
To perform various works made using a grinder grinding and polishing wheels, they can be:
- Spongy
- Felt
- With replaceable sandpaper
- Fabric
The material is selected depending on the surface that is planned to be sanded. Petal blades are used for processing wood species. grinding wheels, they are made of sandpaper, which is fixed to a rigid frame. Sandpaper can be coarse or fine grain; the markings can be seen on the product itself.
If planned make wood smooth, then it is best to use a fine-grained wheel to remove a small layer of wood - medium-grained. If you need to remove old paint, then you need to use a coarse wheel.
By design, grinding wheels can be flap, movable and hard. Petal ones give the most smooth surface wood, therefore they are used as finishing wheels.
Conclusion
When working with an angle grinder, you should always follow safety precautions. It is good when the tool is equipped with a stop handle and a protective casing. Devices that have a chainsaw chain at the edge are considered safe; it is specially installed there. If one of the teeth jams, the disk rotates idle, and this reduces the risk of injury.
An angle grinder, if you know and correctly use all its capabilities, is a truly universal device that can be used on almost any material. And if we are talking about processing wood on a large scale, then the “grinder” is much more effective than hand-held abrasive tools and devices. The main thing is to choose the right nozzle. This article will help you understand their main modifications and specific application.
Rough stripping of wood
Disc plane
This attachment almost completely replaces this hand tool.
An irreplaceable thing if, for example, you need to rough-process a log - when erecting a log house, preparing fence supports, and so on.
Features of application:
- In this case, the protective cover can be removed. This nozzle is solid and does not collapse. But protection from flying wood chips (glasses, thick clothing, mittens) is required.
- It is allowed to work only with a grinder, in which a second handle is provided (or installed). The angle grinder must be held with both hands when roughing wood.
Roughing disc
The main purpose of such attachments is to remove bark from wood and trim the workpiece. If the "grinder" is in in capable hands, then with such a device you can make a sample of material. For example, if it is necessary to cut out a bowl. If it is being built log house, then an angle grinder with such an attachment perfectly replaces a carpenter’s axe.
In some cases abrasive disc cutting can be done. True, the cut will be wide, and there will be a lot of waste (shavings, sawdust).
Milling
Discs
These nozzles are available in various designs. The main difference between the devices is the size of the abrasive grains.
In terms of specific application, they are not much different from rasps. The only difference is the speed of the technological operation. With certain skills, it is advisable to use these for finishing wood.
Milling cutters
They exist, and especially for wood. The assortment is significant, since nozzles of this type differ in the configuration, location and size of the teeth.
Purpose of cutters:
- Selection of grooves.
- Pre-alignment of edges.
- Bowl cutout.
- Sawing (for small-section wooden pieces).
Application specifics:
- When processing wood with such attachments, it is prohibited to dismantle the protective casing.
- Each product has instructions. It clearly indicates what types of work this attachment is intended for, the recommended speed of the grinder, and so on.
Sanding wood
If you decipher the abbreviation angle grinder, it is clear that finishing is the main purpose of the “grinder”.
Cord brushes
They are used primarily for primary (rough) sanding of wood, when it is necessary to smooth out the unevenness of the sample.
End discs
The name speaks for itself. These attachments are used to process the end parts of wooden blanks (cuts). They are especially effective if you have to deal with corner (oblique) cuts.
Petal attachments
The most used grinding devices for grinders.
Such attachments are used sequentially, so you will need several of them to process wood. Grinding begins with a disk with a “coarse” abrasive, and gradually its grain size must be reduced. Consequently, the devices change periodically during the work on the grinder.
Grinding wheels
Most universal device to the "Bulgarian". It alone is quite enough for varying degrees of grinding. The attachment itself is a metal base on which circles with one or another grain size are attached. They are easily changed either as they wear out, or in case of moving to another area of work. Therefore, only circles are consumables. The nozzle itself can be used for an unlimited time.
Application specifics:
- Sanding wood.
- Parquet scraping.
- Processing of edges and ends.
- Stripping wood before painting.
Wood polishing
For these purposes, brushes and discs are used. Their “working elements” can be made of sponge, felt, fine-grained sandpaper and a number of other materials.
The article provides examples of only the main types of attachments for an angle grinder. There are quite a lot of products in this class, so it’s easy to choose the best device for processing any wood. The author hopes that the information provided will help the reader with this.
Note!
Wood processing also means its cutting (sawing). Sometimes, when manufacturing piece parts, you have to adjust them to the installation site even before you start grinding the sample. Some “craftsmen” (and there are many of them among friends and on the Internet) recommend using for such operations. Strictly prohibited! Here are just the main reasons why this should not be done.
- “Bulgarian” is a high-speed machine. And although the metal from which they are made cutting discs, durable, in this mode it does not withstand long. More precisely, cutting edges(teeth), which are fixed by soldering. During intensive work, they fall off and fly apart, and with great speed. The consequences are easy to predict.
- Not all discs in size (primarily, outer diameter) are suitable for installation on angle grinders. This means you will have to dismantle the protective casing. The same thing - you can forget about employee safety.
- The structure of wood (even hardwood) is quite loose. Therefore, there is a high probability that the saw blade may jam due to constant vibration. How the “grinder” will behave in such a situation, given its power and speed, no one can predict. But it’s clear that it can easily escape from your hands.
- Constant changes in mode (for the same reason - the viscosity of lumber) lead to systematic overheating of the angle grinder engine. If used this way, the grinder will not last long.
That is why wood processing with its help is carried out only superficially - rough stripping, grinding, brushing. And for cutting you should use sawing tools and mechanisms (hacksaw, circular saw, electric jigsaw, and so on).
An angle grinder, whose real name is an angle grinder, is a universal tool. They almost never do without it construction work. But in order for the tool to last a long time, it is necessary to select it correctly grinding discs. A disk for wood is fundamentally different from a disk for metal. What are its features, and what varieties are there?
Today the entire range is divided into three main areas:
- Saw blades. They resemble a regular saw, but are made from completely different materials. Until recently, such specimens could not be found, but now they are sold completely freely. The most preferred option is tungsten carbide.
- Diamond coated disc. The most popular variety. In turn, it is divided into solid and segmented. Their scope is different, but there is common feature— high-quality and accurate results of work on concrete, metal or stone.
- Abrasive. Universal consumables, suitable for any type of surface. It cuts, grinds and polishes well.
Of the listed disks, the first and second are not suitable for wood. Natural wood has a very dense structure, and if you use a diamond disc, the grinder will overheat to the point of breaking.
Products also vary in diameter. The most practical ones have a diameter of 125 mm; in rare cases, a compact disk is needed - 115 mm. There are specimens up to 230 mm, but they are not suitable for wood. Their use may cause injury.
Selecting cutting wheels for wood
Cutting discs are divided according to three parameters - diameter, depth of cut and shape/frequency of teeth. Choosing the right option, there are a few things to consider: how often the product will be used and for what kind of wood.
Coniferous and other soft woods can be easily cut with a straight-toothed blade. If you plan to cut different wood, it is better to take a universal circle with variably beveled teeth. There are also trapezoidal teeth that are ideal for cutting through wood. medium density and woody areas.
Selecting grinding and polishing wheels
If cutting a material requires certain skills, then almost anyone can grind. Flap discs are usually used for this operation. Such a disk consists of several sandpaper petals arranged in a circle. Sandpaper provides a gentle sanding effect.
Another option is abrasive disc Velcro. It is convenient to use, but even more convenient to change. Such circles do not last long, but also have a low cost. And, of course, they are many times more effective manual method processing with sandpaper. For example, using such a circle you can polish parquet.
Preparing the tree
Whatever the blade for the grinder, the work cannot be done efficiently if the wood is not properly prepared. Here are some tips on this matter:
- the wood must be thoroughly dried;
- special abrasive attachments are suitable for removing paint or varnish from the surface;
- the work is carried out in two stages, roughing and finishing.
Discs and other tools that will be needed for complete sanding or polishing of wood:
- Cord brushes designed for rough surface grinding. They help give the product an acceptable shape.
- The next step in processing a piece of natural wood is to use a sanding attachment. If the subject is complex, you will also need to apply radial stripes.
- A felt circle made of pressed wool (coarse, fine or semi-coarse) will help get rid of the slightest roughness. With their help, the surface can be made almost mirror-like.
As you can see, when using various attachments, the grinder becomes universal tool for woodworking.
Saws (chain wheels)
Suitable for cutting boards less than 4 cm thick. Use requires extreme caution. During non-working hours, the disc must be kept in a case, and during operation it must be used only at the speed indicated on the product itself.
Also, goggles and protective gloves are required when working. It is important to remember that under no circumstances should you use regular circles designed for a circular saw on an angle grinder.
Using an angle grinder for milling
A wood cutter for an angle grinder can be dangerous in unprofessional hands. For a specialist, its use is acceptable.
The milling cutter helps to level the edge, make grooves, cut workpieces and cut out bowls for log houses. Even on non-uniform wood, the tool will not jam or throw off. However, before starting use, it is important to carefully read the instructions and also observe the required speed.
The choice of cutters for angle grinders is quite wide, no less than for a manual milling machine. They are not intended for precision machining, but are quite suitable for shaping.
Safety rules during operation
In order for the use of a wood disc for an angle grinder to bring only benefits and not injuries and damaged products, you must follow several important rules:
- choose the right circle according to size and properties;
- The operating mode of the machine must correspond to the requirements on the disk;
- Damaged wheels should not be used under any circumstances;
- protect your hands and face special devices and special clothing.
The attachment should fit effortlessly under the angle grinder casing. If you can’t do this, then do not remove the casing, it is dangerous.
Why can’t you use saw blades with an angle grinder?
The hardness of wood can vary even within a few centimeters. It may also contain clumps of resin and knots. All these uneven areas lead to the saw blade stopping abruptly, as a result of which the grinder is torn out of your hands.
Angle grinder (angle grinder)
A wide selection of power tools on the Russian market is designed to make it easier different types self made. If in professional field purchase specialized equipment is simply necessary, then in everyday life it is not always rational to spend money on an expensive tool, which after completing a certain job may not be useful at all. The most popular power tool is the angle grinder (angle grinder). The scope of its application is not limited to metal processing - grinding wood with a grinder is done using special attachments.
For those who don’t know “Is it possible to process wood with an angle grinder?” this article will be useful. To perform grinding and polishing of wooden products or large solid surfaces, you will need to purchase the appropriate attachment - a circle. For Bulgarians different sizes nozzles are selected that are designed for a certain rotation speed. Special discs designed for wood processing must be carefully selected. The disk must match the dimensions of the tool; a special nut is used to secure it.
When working with angle grinders, it is necessary to strictly observe safety precautions and use only factory-made wheels that are suitable for a specific model of power tool.
Processing wood with an angle grinder
Coarse grinding discs for wood for angle grinders
There are several types of circles that differ in shape, material of manufacture and purpose. As a rule, wooden blank must first pass rough processing surface, after which it is subjected to finishing or final detailing of the coating with abrasive segments.
For such work, there is a special attachment on the grinder for sanding wood. The most popular are:
- Grinding circles. This grinding attachment on an angle grinder is best used to remove a layer of old paint. Suitable for varnished coating which cannot be removed manually. This could be a wooden floor painted several times or a window sill. The design of abrasive discs consists of a disc and metal bristles made of elastic wire. Nozzles are available with different locations steel bristles. Depending on the desired effect, the bristles can be placed along the entire perimeter of the disc parallel to the tool or perpendicular to the segment - as in a regular brush.
- Cord brushes are a disc with a large abrasive coating, designed for rough grinding and removing roughness on wooden surface. By using of this instrument wood blank acquires final form. The work productivity is significantly higher compared to conventional hand tools.
- End discs. Nozzles are used when you need to level a product from the end. Miter cuts and edges of the workpiece require such processing. The technique is identical to a file, but the efficiency of the abrasive exceeds that of hand tools. When working with a segment, it is important to have skills, and then such a simple tool can completely replace a molding cutter in terms of edge processing.
Using a grinder for polishing wood, you can completely restore furniture covered with varnish and paint. After such cleaning the thickness wooden base practically does not decrease, but newly painted furniture will look beautiful and impressive.
When performing grinding work with an angle grinder, the choice of tool is not so significant compared to the presence of well-dried wood and the absence of cracks on the surface.
Grinding wheels for gentle processing and their areas of application
Nozzles are used to sand wood with a grinder. universal design and with a special gentle coating. Such machining intended for specific work:
- The flap disc is used for grinding solid wood. The design of this segment corresponds to its name. His work surface equipped a large number trapezoidal sandpaper petals that overlap each other like fish scales (three-quarter overlap of the previous row). With this arrangement of the petals, abrasion of the nozzle occurs much more slowly.
This is the most common type of grinder attachment for sanding 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 its grain size. The size of the abrasive determines how quickly and efficiently the unevenness on the wooden surface will be removed.
The sanded coating at different stages of processing may remain slightly rough or be perfectly smooth without the slightest flaws or snags. The final result can be achieved by sequentially moving from abrasive discs with a coarse-grained fraction to segments for finer processing. Therefore, you will need several discs for a grinder for sanding wood, which will be changed in stages.
To use the petal attachment, certain skills are required, which means that training before performing important work will be simply necessary.
- Wheels for soft grinding. Universal nozzle The grinder for sanding wood appeared on the market relatively recently and is distinguished by its special design and high functionality. Rough work is carried out by replaceable discs with the desired grain size, which are attached to the sticky base of the attachment. In this regard, the abrasive tool received the corresponding name - a sticky disc.
The main advantage of a grinder wheel for grinding wood is the quick replacement of a worn-out replacement disk: the entire procedure takes place without removing the main attachment, which is secured with a nut. First, you need to purchase a sticky attachment for grinding on an angle grinder, so that later you can replace the worn-out abrasive segment without any difficulties.
How to choose grinding attachments for an angle machine
Circles should be selected according to the main parameters:
- outer diameter (larger sizes speed up the processing process and increase service life);
- bore diameter (installation of the circle larger size to a smaller one is possible using a special adapter);
- thickness (the greater the thickness, the longer the segment will last);
- grain size (the fraction must correspond to the type of processing: coarse abrasive for rough work, and small - for soft processing and creating a finishing coating);
- segment type (suitable special nozzles for processing wooden surfaces).
Reference! The shaft diameter in modern angle grinders for wood is 22.2 mm.
What you need to know when working with an angle grinder
Update flooring(parquet), furniture or facade of the house where there are wooden structures or individual elements, is performed using a 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 at home. But in order to choose the right tool for the job, you need to carefully examine the wooden surface for the presence of fungus, cracks and irregularities. A video is provided to help beginners who want to know “How to properly sand wood with a grinder.”
For each angle grinder model, it is mandatory to select sanding attachment, only in this case will the safe performance of work and high-quality surface treatment be guaranteed. Before you start working with a grinder (sanding wood), you need to make sure that the disc is properly secured. Move corner machine on the surface you need to move smoothly and avoid vibration of the tool.
When working with an angle grinder for grinding wood, it is unacceptable to use discs of small thickness (high rotation speed and load lead to the wheel breaking, which can lead to injury).
Cost of wheels for woodworking
The price of a tool for polishing a wooden surface is not high, but it depends on the material, diameter and thickness. The table shows the average cost of an abrasive tool in major cities Russia:
| Name of cities | Price of wood attachments, rubles per unit | ||||
| Abrasive discs for soft sanding | Roughing (cleaning) wheels | End | Cord brushes | ||
| Moscow | from 70 to 900 | from 35 to 14900 | from 86 to 270 | from 33 to 430 | from 36 to 5400 |
| Saint Petersburg | from 95 to 800 | from 35 to 14900 | from 86 to 270 | from 33 to 430 | from 36 to 5400 |
| Chelyabinsk | from 262 to 820 | from 35 to 14900 | from 86 to 270 | from 33 to 430 | from 36 to 5400 |
| Novosibirsk | from 100 to 760 | from 35 to 9000 | from 86 to 270 | from 33 to 430 | from 36 to 5400 |
| Kaliningrad | from 57 to 660 | from 35 to 9000 | from 86 to 270 | from 33 to 430 | from 36 to 5400 |
Manual work requires the use of high-quality tools, and an angle grinder with attachments greatly facilitates the work and speeds up the process of processing a wooden surface.
