Grinding with an angle grinder of various materials
Today, the angle grinder is a versatile device, with which you can perform all kinds of operations for processing materials. angle grinder is used for leveling walls or floors, it can be used to grind or polish metal products. It is indispensable for car repair work. It is almost impossible to replace it where it is necessary to cut, scrape or grind parts made of any material. This article will discuss the use of an angle grinder for grinding and polishing wood, metal, concrete and brick.
For those involved in the construction of wooden houses, repair or manufacture of wooden furniture, it is important to know how to properly handle wooden products. First of all, determine with the necessary tool. The most common and affordable is an angle grinder (angle grinder), or, as it is also called, angle grinder. This tool is available in every home. With its help almost all the work on wood processing can be done: sanding logs, leveling, sanding and polishing.
Nozzles on the angle grinder for wood
First of all, it is necessary to know what attachments are used for this or that operation.
- To perform rough preparation of logs during the construction of a log house, use a disk. planer. Working with such an attachment, the tool should be held with two hands. Sometimes workers remove the hood, but then it is necessary to protect the face from flying chips.
- The skinning disc is designed to remove bark from logs. If necessary, it can be used for sawing lumber. In this case, the disadvantage is a wide cut and a large amount of sawdust.
- Finishing is used when a log cabin needs sanding. In this case, abrasive discs are used.
- Scrubbers are used when it is necessary to level the surface.
- End discs are used when machining ends, corners or oblique cuts.
- If you want to grind angle grinder wood, floor scraping, processing faces and edges, preparing the surface before painting, use paddle attachments and grinding discs.
- To grind boards with angle grinder, use discs of fine-grained sandpaper, felt or other material.
These are basic, but not all of the accessories used for angle grinders. In order to grind wood with an angle grinder, you need to know the basic techniques. The logs are cleaned using the end bits. Hold the attachment at a slight angle. Such a tool can easily clean not only the corners and joints, but can also effectively clean the logs. This is also the way to grind a log.
Using an angle grinder for artificial wood aging
Nowadays woodworking is very popular, allowing it to be artificially aged. This method is called brushing.
The work is performed by the angle grinder with a special set of nozzles.
When performing such an operation, the device should be moved along the fibers.
First of all, the steel filament sanding tool is used. It performs selective removal of fibers, producing roughing the timber. Before staining the workpiece made fine sanding with devices with copper or sisal nap. Sometimes a universal abrasive-polymer brush is used.
Sanding the wooden floor
When carrying out a complete overhaul of a house it is often necessary to make sanding of a wooden floor. First of all, it is necessary to remove all protrusions, using the appropriate devices. And only after that is the finishing of wood, using grinding wheels with the required grain.
To properly grind wooden products, you should know that there are many methods by which you can bring the workpiece to the desired condition. Each of these methods has its advantages and disadvantages. To work well, you need to have some experience, as well as do not forget about personal protective equipment.
Is it possible to work with an angle grinder on wood?
A person who is interested in discs for angle grinder for wood sawing will inevitably encounter two diametrically opposed opinions. Some will argue that many special tools have been created for wood sawing: a circular saw (aka “parquet saw”), a saber saw, an electric jigsaw, finally, a sawmill or a chain saw. Working with an angle grinder on wood entails an increased risk of injury.
Others respond by saying that they have years of experience using various wood discs on the angle grinder. The main thing. it is competent use and compliance with safety precautions.
Both are right in some respects. Handle the tool carefully, have skill, use protective equipment.
The danger of using an angle grinder when sawing wood is mainly due to the use of a circular toothed disc with the guard removed. In this case, the backfire can rip the angle grinder out of your hands and injure the operator.
If all the requirements are met, and the grip and cut is correct, the danger can be minimized to a normal level.
Do not use standard metal discs for sawing wood: they are not adapted for this material, cellulose fibers begin to smoke and burn.
What is the difficulty of using an angle grinder with wood?
The first thing experts point out is that an angle grinder has a much higher disc speed than a circular saw. Therefore, if you will cut not only metal and concrete, but also work with wood, buy an angle grinder with a disc speed regulator and soft start.
To cut a log, saw wood with an angle grinder or fell a trunk, you need to work at medium speed. at high speed of rotation of the head any obstacle in the way of the cutting edge (wire, nails, resin, clamping disc, wrong angle of disc tilt, multidirectional wood fibers) can provoke a powerful jerk of the tool, and the angle grinder can simply not hold in your hands. In addition, you can cut a tree on the site with an angle grinder only when holding it horizontally, which is a high risk of injury.
Before you begin, determine on which side it will be more convenient to screw in the handle-holder of the angle grinder, and at what angle should you turn the protective cover to protect your eyes and face from sawdust.
Run the power cable in a safe route beforehand, not in the path of a falling tree.
Important! Do not under any circumstances saw a tree trunk or overlying log with an angle grinder without a disc speed adjustment. Also do not use discs for metal, sanding or polishing tools. It is best to use a wood disc with coarse teeth.
Features of cutting glass and plexiglass with angle grinder
Glass is a transparent, strong, but relatively brittle material. It has good temperature resistance. Special tools are required for processing it. At home, the cut glass can be done with a regular angle grinder, and the work progresses fairly quickly.
To cut glass with an angle grinder, concrete or granite grinding discs are used as working tools. During sawing, you must continuously run cold water on the material to be cut. This is because this area gets very hot. A high temperature value results in a faster wear of the disc. The cooling system prevents this and also improves the cutting quality.
Different types of glass can be cut in this way:
Organic glass (plexiglass) has different properties from ordinary glass. It is a durable but lightweight material that comes in many colors. It has a variety of practical applications. Often you have to cut fragments of the right size from the whole sheet. Using an angle grinder to cut organic glass is one of the options, suitable for home use.
As a working nozzle for cutting plexiglass use thin (no more than 1 mm) circles, which are used for sawing ordinary glass.
Cutting Plexiglas also causes considerable heating of the cut area. This can produce smoke and melt the edges of the material. The molten particles will fly to the sides. On contact with skin, they can sometimes cause burns. To avoid these effects, it is important to cool the contact area between the wheel and the plexiglass in good time.
Grinding and polishing
To perform sanding and polishing of wooden products, the tool is no better than an angle grinder, because.к. It has a good productivity and is able to ensure a high quality of work performed. With an angle grinder you can perform the entire cycle of operations on the processing of wooden surfaces: from roughing to finish polishing.
How To Cut Wood With Angle Grinder. NOT toothed disc.
Special sanding accessories are used for this work. The quality of the product depends on how well matched the wheel on the angle grinder. These bits differ in shape, material and purpose.
For roughing (roughing) are used these types of nozzles:
- Roughing disc is a steel disc, on which pieces of metal wire are soldered;
- cord brush. a disk with a wire lint (there are of different hardness);
- end disc.
Other attachments are used for polishing and final sanding:
The angle grinder is not designed for sawing and cutting wood. The use of an angle grinder for these works is not recommended, but under certain conditions, performing a small amount of work is allowed.
Can I cut wood with an angle grinder?
Well, literally, wood is better cut with a hacksaw. But materials of wood, such as plywood and thin board 2-3 cm, then yes, in this case, the angle grinder can be used for cutting. We will consider the safety precautions below, but now the nuances of the technical points.
To cut wood with an angle grinder you need a wood disc like the one on the picture. It has special teeth that provide a wide cut, enough so that the angle grinder blade does not jam. and the tool itself. without tearing it out of your hands. Nevertheless, it is not recommended to cut trees with the angle grinder, in the literal sense, and to saw the wood itself, you should approach with maximum caution.
Wood grinder bits
To process wood, in addition to cutting discs, there are specially designed for installation on the angle grinder attachments, which can produce stripping, sanding, brushing and milling wood surfaces.
If you want to remove a layer of paint or other coating from a wooden surface, the angle grinder can be fitted with a scraping nozzle. A large number of different router bits are available for roughing work. They differ in shape and construction, and in the kinds of work that can be carried out with these tools.
The picture below shows disc bits with spikes or flakes, with which you can easily remove the top layer of wood, grind the end face of a board, etc.д.
The following cutter, thanks to the fact that its spikes are on a flat plane, makes it possible to level various wooden surfaces. For example, if 2 boards on the floor at the end joint are at different heights. With this bit it is easy to repair the defect and the boards come together in one plane.
There are also twisted wire scraping nozzles. They can be made as a metal cup with a wire inserted in it.
How to use Your Angle Grinder on Wood
Or in the form of a disc with coils of wire clamped in its central part.
These brushes are used if you need to quickly remove old paint from wooden surfaces or rust and paint from metal.
The following photo shows a brush with a smaller wire diameter, and it is used for finer sanding work on wood and metal.
In addition to brushing, this brush is often used for brushing wood, ie giving it the effect of aging. If the brushing effect is to be used on large surfaces in a professional environment, it is better to use special manual machines with wide brushes for brushing.
Sanding and polishing nozzles
For sanding various surfaces, including wood, there is a special attachment for angle grinder, which consists of a metal base, on which the sanding wheel is fixed with Velcro. The brush head is screwed onto the shaft of an angle grinder and tightened with a wrench.
It often comes with an adapter for fixing it in the chuck of a drill or drilling machine.
Do not use the emery wheel for polishing surfaces. Instead of it, felt discs are installed on the nozzle, which are fastened with Velcro.
Also for sanding wooden surfaces is often used petal sanding wheel. It is so called because it consists of a set of petals, fixed on its surface, made of sandpaper. The grit size of the latter can be selected based on the requirements for the surface to be processed. For rough sanding suit sandpaper with coarse grit, and for finishing. on the contrary.
What is better to sand wood. angle grinder or grinder. depends on what you’re going to prepare the wooden surface. If under the application of conventional paint, you can use the grinding wheel. If under varnishing, the grinding wheel installed on the angle grinder can not be used, as it will give the wood surface fine radial scratches, which will clearly show up after the application of varnish. In this case, for grinding use a longitudinal belt sander (the sanding belt moves longitudinally) or vibrating, which uses the same sanding discs.
Flat blade disc
A disc with several blades protruding from the sides can be seen as an alternative to a planer. It is designed primarily for removal of material on a plane. This attachment is indispensable for logging, allows very quickly and accurately remove bark from unedged boards or logs. It is also convenient for processing convex or concave surfaces.
It’s hard and time-consuming to do this kind of work with a planer. In addition to its obvious usefulness, the disc made of quality steel has a good service life. And blunt blades can be sharpened without special tools.
Cutting end discs
End discs, also called cutting, milling, and sawing discs, offer material processing with the normal load character for an angle grinder. That is, the nozzle rotates in the same way as an abrasive wheel, with the same directions of forces and tool control mechanics.
These discs have a very important feature for beginners. Radial speed of the cutting edges is high. Therefore, sharp load jumps are possible when cutting grooves, sawing material. For example, because of its uneven density. angle grinder can be ripped out of the hands, there are displacements of the disc with the impact due to changes in the nature and area of processing. However, in the hands of the craftsman, this relatively dangerous class of cutting discs allows you to do many operations.
- Wheeled. Available as a standalone product or as an attachment to a conventional abrasive tool. Has a flat end part with teeth. The nozzle is used for grooving as well as for grinding the bottom and edges of grooves.
- Toothed spiked. Manufactured in a toothed saw blade format, with a single row of side ridges. The nozzle is designed for shallow grooving. Lateral teeth prevent deformation and reduce the risk of violent jerking when working. They also allow the craftsman to move perpendicular to the groove line, expanding it.
- Toothed planar. The difference from the previous product is that the teeth are placed practically on the whole lateral plane of the nozzle. The nozzle can be used when machining flat surfaces, forming rectangular grooves of considerable depth, cutting thick workpieces.
Introductory part. The Young Soldier Course
angle grinder, aka angle grinder. grinder (angle grinder). Brief information for those who are holding this willful tool in their hands for the first time.
1.1. Angle grinder device (angle grinder)
Stop button on the spindle (spindle rotation is blocked when the tool is off, when replacing abrasive discs)
Handle. Rubber coated as pictured. The angle grinder gives tangible vibrations in operation.
Protective cover. It is strictly forbidden to remove it!
Air ducts. Try not to overlap them with the palms of your hands so as not to overheat the angle grinder.
Abrasive disc. In this case, the grinding machine.
Do you know why an angle grinder is called an angle grinder??
Name itself “angle grinder”, appeared in the 70’s of last century, when the USSR received the first representatives of this type of tools produced in Bulgaria. Called “Fortuna”.
The Bulgarian factory “Elprom-Lovech”, now Sparky, was the first in the CMEA to produce this type of power tool, having purchased a license from AEG in 1966.
1.2. Actions with angle grinder. What can be turned and changed
Some models have the constructive ability to change
1.2.2. Position of the safety guard
Very conveniently made by the Japanese (Kawasaki). You can change it in a couple of seconds without using a wrench.
The click system also looks interesting, but I personally have not used it.
If you found in a garage, received at the manufacture, borrowed from a neighbor or where else or get hold of a second-hand angle grinder without a protective hood, then refuse to work or arrange its presence. Never work without the protective hood!
1.2.3. Speed adjustment
There are excellent angle grinders on the market. angle grinders with speed control. I use it myself and I strongly recommend it. Not out of place here and economic considerations. Consumption of abrasive wheels will be 2-3 times lower.
If your angle grinder itself does not know how to regulate the speed, then look for an adjustable autotransformer (LATP), many use homemade. With this device you can beat the frantic speed of an angle grinder and even turn it into a polisher.
De-energize the tool (can be unplugged)
Push the spindle stop (see “How to stop the spindle” in the manual grinding machine). angle grinder device above)
We unscrew the lock nut with a special wrench
This is not the most convenient option will be on your angle grinder by default. When bored with a wrench, get an upgraded nut with a spring-loaded base that clamps the disk. Chinese junk, pay once for the quality of AEG, Bosch or Makita.
Milling with an angle grinder
Another operation that many experienced craftsmen successfully perform with this tool is milling. It is not possible to make a really good quality finish, unlike a cutter. However, you can make a groove and cut a small part quite well.
Again, this operation is dangerous. Recommendations for general action with the tool I have already written, so follow them. the angle grinder needs a thick and high quality cutter. First of all reject the possibility to use self-made tools, choose an old brand which is insured from chipping and breaking.
Even with all the tips, a beginner alone should not take up milling without the supervision of a more experienced craftsman. As mentioned above, accidents happen to craftsmen all the time, too, given the instability of the tool.