How to work with a grinder correctly
No matter how hard you try to get a flat surface of the walls or ceiling during putty, defects will still remain on the surface: strips of tubercles from the corners of the spatula canvas, uneven transitions of the walls huddled at different times. Therefore, to eliminate these defects, after putty, it is necessary to bring the surface to the ideal with the help of grinding with sandpaper or nets.
Of all wall repair operations, this is the most unpleasant, as it is accompanied by a huge number of penetrating dust everywhere. It is necessary to work in the respirator without fail, otherwise it will be impossible to breathe. It is necessary to protect from dust and eyes with the help of glasses tightly adjacent. It is better to take out all things and tools from the room, otherwise they will be covered with a thick layer of dust.
The photo was taken a few hours after the end of the walls of the walls when the dust hanging in the air settled. Before the grinding began, the floors were clean.
Wood grinding machine: Views
Today the market presents us several varieties of grinding equipment intended for use both in everyday life and at a professional level. The differences in the design as well as the principle of its operation determine the purpose of the equipment, they are: there are:
Grinder Safety | How to Properly Use an Angle Grinder
The vibration types provide a softer grinding, this is possible due to circular movements with a small amplitude. The surface of such a grinder is made in the form of a rectangle, which allows you to process hard.to.reach places;
With the help of a grinder, you can easily remove the old paint
Another variety is an eccentric grinder that allows you to treat the surface so well that it becomes almost polished. This becomes possible due to the oscillatory-revolutionary movements that the plate makes. The eccentric machine is not suitable for processing small areas and internal corners.
Deltas.grinder is convenient for grinding small recesses, corners, recesses
Device and use of tape machines
Oregon 520-120 and 410-120 Electric Chain Grinder Instructions
The grinding unit in this type of equipment is a tape that is mounted around two rollers. The movement of rollers allows the tape to rotate at the required speed. A rather important characteristic of the work of a tree of wood is speed. The power of the tool depends on the speed of rotation. This indicator can fluctuate from 500 to 1200 watts. There are models that are additionally equipped with a speed regulator that allows you to choose the optimal level depending on the processed surface.
The grinding element of the tape grinder is represented by a tape that is attached around two rollers
Dimensions of the tape are different, depending on the model of the grinding machine for wood. The larger this indicator, the more functional the tool, however, the weight of the structure and its dimensions increases significantly. When choosing a grinding tool, you need to pay special attention to the grain of the applied tape. To make the work high.quality and enjoy it, it is worth buying various types of tapes with different granularity.
Samples of grinding machines with a tape mechanism are equipped with a special device for collecting excess waste and dust that appear during operation. Some specimens are equipped with a nozzle, to which you can connect a vacuum cleaner.
In order for the work of tape grinder to be of high quality and give pleasure, it is worth buying tapes with varying degrees of granularity
- The tape is elastic;
- Joints have no irregularities;
- the edge of the tape of the straight line on both sides;
- High level tape strength.
When performing significant volumes of work, ribbon grinder are equipped with a special design. This allows you to control the depth and quality of the processing of the material, and for beginners they are simply a find, as they do not have experience with such machines. The market offers cars that have flat ends, this makes it possible to perform grinding work close to the wall of the room. Some samples of such machines have an additional function of automatic filtering of the tape.
Squab.free ripe grinder allows grinding work in close proximity to the wall
The principle of operation and the use of vibration grinder.
The vibrational machine works on the principle of oscillatory surface movements, sheets are fixed on it from abrasive material. They are attached with special clamps or fasteners. Grinding with such a type of machines you can surface of metal, plastic, wood, with them you can remove decorated paints and varnishes from coatings.
The principle of operation of the vibrational machine is in the oscillatory movements of the surface, on which sheets of abrasive material are attached
The amplitude of the oscillations is regulated and depends on the purpose of the grinding surface, ranges from 4-5 mm to 1.5-3 mm. When choosing this type of grinder, it is necessary to look at the speed of revolutions and oscillatory movements, as well as its power. If it is possible to adjust these indicators then this is an additional plus for the selected equipment.
Advantages of deltas grinders
The base of such a machine resembles the shape of an iron.Great for processing almost any solid surface. Apply it to give the life of old furniture, old window frames. The shape of the iron allows you to grind in hard.to.reach and narrow places.
Delt Govlifmashinki sole is made in the form of a reduced iron
The speed of the machine is quite high. When purchasing, pay attention to those models that are equipped with the function of speed adjustment, and the possibility of rotating the sole at different angles. Some are equipped with additional nozzles that can be freely fixed.
The tape is still better
The strip grinder allows you to do the same as the disk and much more. Therefore, then we will focus on how to make a strip grinding machine with our own hands. Amateurs, focusing on industrial samples, make grinders sometimes very intricate, see. rice.:
Home.made tape grinding machines
And this is justified: the design and kinematics of the strip Greener are very plastic, which allows you to successfully use improvised materials and old scrap metal. It is only necessary to observe 3 principles:
- Do not do as on the second on the left photo rice.: the tape of the abrasive side should only concern the processed part. Otherwise, the abrasive will eat and bypass videos, and himself. The accuracy and purity of processing over one working operation will be unpredictable;
- The design of the machine should provide uniform tension of the tape, regardless of the nature of the operation;
- The speed of the tape must correspond to the nature of the operation.
Kinematics and design
As mentioned above, there are many Greener designs. Conscious of what and how to build Grinder yourself, it is better to focus on industrial samples designed fully mechanized for accurate and clean grinding of large.sized profiled parts: once it “shits” the propeller of the plane or windbreaker as it should, then it will cope with any other work.
Kinematic schemes of the specific purpose of the specified purpose are given in rice.:
The main kinematic circuits of ribbon grinding machines (Greeners)
Pos. A. the most difficult and perfect, with three rockers. If the length of the roller roller roller. 2 times less than the worker, then by adjusting the tension of the springs, you can achieve uniform tension of the tape during the course of the working rod by 20-30 degrees up and down. The tilt of the bypass rocker, firstly, the machine is reconfigured under tapes of different lengths. Secondly, in the same way you can quickly change the tension of the tape for different operations. Any work branch of the tape can be any, except for the runaway from the leading pulley to the stretch roller, t.e. Grinder with 3 rockers at the same time both horizontal and vertical.
The scheme with one inconspicuous rocker in industry is used quite rarely, t.to. In principle, it does not allow to achieve uniform tension of the tape. However, it gives accuracy quite sufficient at home and allows you to build a very good simple Grinder.
What is good for
Now let’s see what is possible to “squeeze” from a particular scheme from the point of view of an amateur master. And then we’ll try to figure out how to make a tape for the Greener and do without custom.made chosen details.
Competent lovers build their Greenders just according to the scheme with 3 rockers, on the left on rice. below. The blades of propeller are not all grinded, but in this case there is another advantage of this scheme: if Grinder is used as vertical, then the working branch of the tape is elastic. elastic. This allows a skilled master, for example, to draw cutting edges and blades literally with micron accuracy.
Read also: designations in electrical engineering letters
Homemade and industrial manufacturing tape greenhouse
In industrial grinders for home use, a scheme with 3 rockers is also used widely (in the center) for the same reasons. Repeating them on their own in most cases is quite possible. E.g., Drawings of the KMG Grinder popular abroad can be downloaded from the link.
The dimensions, however, inch. American machine. In any case, it is possible to use an angular corner grinder for the drive in any case (on the right on the rice., quite suitable in power) with a home.made pulley and rollers, cm. Further.
Note: If you make a stationary drive, try to get an asynchronous motor at 2-3 speeds from a unfit washer with a horizontal tank. Its advantage is small turnover. This makes it possible to make a leading pulley of large diameter and thereby eliminate the slippage of the tape. Passing the tape in work. an almost certainly spoiled part. Most washings with 2-3 speed asynchronous engines for 220 V are Spanish. Power on the shaft-600-1000 watts. If you put on one, do not forget about the standard phase.digging capacitor battery.
In its pure form, fans do not do. The constituent hinge is a complex, an elastic ribbon does not make it yourself, and the purchased is expensive. Grinders with a coarse rocker at home are most often used in the option for small accurate work from the table, t.e. with a rigidly fixed horizontal rocker. But then the need for the rod as such disappears.
An example is a mini grinder, the drawings of which are given in rice.:
Drawings of a mini-grinder for small accurate work
Its features, firstly, is a patch bed for the tape (pos. 7), which significantly expands the possibilities of using. E.g., The iron iron of the Rubank is corrected on this grinder with a corner emphasis literally on its own. In this case, Grinder works, so to speak, like a self.propelled donkey (sandpaper). Having removed the bed, we get Grinder with an elastic ribbon for accurate grinding/polishing rounded small parts. Secondly, stretch shaft (pos. 12). Clutching it with a groove with nuts, we get a relatively fixed tension of the tape for working with the bed. And letting go of the nuts, we transfer Grinder into gravitational tension of the tape for thin work. Drive. not necessarily through the pulley (pos. eleven). Can be twisted right by the shank of the leading shaft (pos. 16) from a drill through a transition coupling, see. higher.
Rating of the best models
Below are a few model of grinding mash, which is distinguished by decent quality and high reliability.
Bort BBS-801N-inexpensive, but good tape grinding machine.
Here are its main technical characteristics:
- Electric motor power 800 watts.
- Rotation speed is 260 meters per minute.
- Abrasive width 7 cm.
- Tape length 45.7 cm.
- Total weight 3.1 kg.
- The length of the network cord 3 m.
- Power from a household electric network with a voltage of 220 V.
A distinctive feature of the model is the presence of a vacuum cleaner with built.in brushes. This structural element automatically collects dust forming during operation and small particles of garbage.
Smooth rotation speed adjustment is possible. For this, there is a special pen on the case.
The device has two handles, which makes work with it quite convenient. Each of them is made of a polymer composition that prevents the glide of the palms.
Weak place BORT BBS-801N-insufficiently long cord. Its length is only 3 m, and this is not enough when processing large areas. However, the problem is easy to eliminate by using an extension cord or increasing the cord with an additional piece of cable.
Bosch PBS 75 A
Bosch PBS 75 A is a professional grinding machine from a well.known electronics manufacturer from Germany. Despite its “branded”, it costs quite inexpensively. from 5,000 to 6,000.
Here are the main technical characteristics of this model:
- Electric motor power 710 watts.
- Rotation speed 350 meters per minute.
- Abrasive width 7.5 cm.
- Tape length 533 cm.
- Total weight 3.4 kg.
- The length of the network cord 4 m.
- Power from a household electric network with a voltage of 220 V.
A distinctive feature of Bosch PBS 75 A is the body shape. It is designed in such a way that during operation on the device you can exert the maximum possible pressure. This significantly improves grinding.
Another advantage of the model is a long four.meter cord, which makes the movement of a working with a tool much free.
Bosch PBS 75 A, despite the low power of the electric motor, is able to reach a high speed of rotation of the working surface, which significantly increases the efficiency of using the tool.
This model also provides an automatic vacuumor. Safety measures are also thought out. the power supply button can be blocked if they do not work with the power tool for some time. This allows us to exclude spontaneous launch of equipment due to random presses.
Makita 9910. tape grinding machine from the famous Japanese manufacturer of the power tool.
Here are its main technical characteristics:
- Electric motor power 650 watts.
- Rotation speed is 270 meters per minute.
- Abrasive width 7.6 cm.
- Tape length 45.7 cm.
- Total weight 2.7 kg.
- The length of the network cord 3.5 m.
- Power from a household electric network with a voltage of 220 V.
Makita 9910 is distinguished by a well.thought.out security system. So, the design provides for automatic centering of the tape right during operation. This prevents its gatherings that can cause injury. The wires and the electric motor are also well.isolated. This does not even be terrible even the ingress of small drops of water onto the housing and cables.
The vacuumber is made of cloth material. Thanks to this, it is very easy to empty and wash it.
The model is very light and has comfortable ergonomic coating handles, which prevents the glide of the palms. This does work with Makita 9910 very comfortable. The front handle is an emphasis for the hand, which allows you to achieve the maximum possible pressure on the processed surface.
Cord. medium length. Nevertheless, it allows you to solve the majority of problems arising during the work and almost does not constrain the movement.
In Russian retail, Makita 9910 costs from 6,000 to 7,000.
Corner grinder. what kind of beast is this?
Corner grinding machine (angular grinding machine). This is the name of the tool that many people know how a grinding machine. The first models of this tool in the USSR began to be produced in Bulgaria at the Altos Bolgaria enterprise. The first grinding machines were produced only as grinding, later angular grinding machines became more functional and almost indispensable in construction and metalworking.
Outside, the angular grinder looks pretty simple and unpretentious: a cylindrical case, on one side of which is a pen, and on the other. side handle (not required) and holder for nozzles. It is the nozzles that make an angular grinding machine with such a multifunctional tool. All nozzles are installed on a spindle, and the discs are always additionally fixed with a flange and a clamping nut. This is necessary when working with a grinder.
Modern corner grinding machines can cope with many tasks: grinding and polishing surfaces, cutting stone, tiles, glass, concrete, plywood, metal and brick, and if necessary, even a slice of sausage can be cut into molds, the main thing is to choose the right nozzle. Keep in mind that each type of work and workpieces has its own abrasive tool.
Replaceable nozzle nozzles are presented in the following assortment:
- Brushes. for cleaning and polishing surfaces. You can clean the metal of rust or polish welds.
- Circles. the use of circles depends on their composition. Some can cut metal, others. Only ceramics. All this can be found in the instructions on the packaging and on the disk itself.
Different not only removable nozzles, but also grinders. They are domestic, professional and production. A home remedy can be used for no more than 40 minutes and not every day. Professional Bulgarians can work for several hours a day, and industrial Bulgarian. This workaholic. can work almost tirelessly. Differences can also be found in the appearance of the tool: grinding machines with one handle, with two handles and with vibro.absorbing handles.
How to choose a tool
Firstly, you need to decide for which type and volume of work you will need a tool, whether it will be one.time work or a grinder is needed for constant use in the workshop or in production.
If this is a one.time operation, after which a grinding machine is no longer needed, and there is a drill, an electric screwdriver or a corner grinder at hand, then you should pay attention to grinding nozzles for these tools. If they are suitable for work, then you will save your time and money.
When work is periodic, and their volume is not large, then it is worth paying attention to the renovator. This tool will not only be able to grind, but also useful in the future, t.to. It is indispensable for rare, small wood, metal, even tiles in hard.to.reach places. In the household, he can replace a bunch of other tools.
Renovator with nozzles
If the tool is necessary in the workshop for constant work, where both coarse stripping and finish grinding are required, in t.h. In difficult places, you will need two or three tools at once:
- A combination of tape, eccentric and deltas.grinding machine will be a serious blow to the budget, but can cover all needs at once. As a result, we get a quick cleaning and fast finish grinding, as well as processing, inaccessible to previous models, angles.
- A combination of plane.grinding and deltas.grinding machine will not be so effective on large volumes of preparatory work on rough cleaning of wood, this will take more time.
- The combination of eccentric and deltas.grinding machine will be even slower, but the result of the grinding will be better.
To perform rare carpentry work at home or in the barn, the workshop will suit cheaper models of grinding machines. Household machines can be designed for a limited use use with interruptions.
It is worthwhile to think about assembling a home.made device only if you have your own workshop or shed, where there are all the necessary materials, as well as a place to install the tool. It will also need a lot of time, patience and understanding why it will need.
Characteristics that you need to pay attention to when choosing:
- Power consumption, since performance depends on it. In this case, the capacities are compared between models, and not between the type of machine.
- Does the apparatus have a built.in system of dusting on the sole, the conclusion for connecting the vacuum cleaner. Without it, dust particles will interfere: spoil the surface of the product, clog in an abrasive, reducing the efficiency of work. The more holes on the sole. the better, they should be evenly spaced throughout its area.
- The longer the power cord. the better. The extension cord compensates for this drawback, but it is not very convenient to carry a box with a socket on a cord.
- The handles should comfortably lie in the hand, for this they make rubber linings on them.
- All buttons must switch to all positions without effort and lie on the handle so that it is not necessary to intercept to press them.
- Pay attention to weight. It is convenient to work with a light tool on a vertical. Heavy models are easier to manage.
- The presence of the “smooth start” function. when the revolutions are recruited gradually. The resource of the tool depends on it, it is also more pleasant when the tool begins to work smoothly, not a jerk.
- It should be possible to adjust the number of revolutions. For grinding, use a large number of revolutions, but there are places where you need to carefully process the surface of the product at small speeds.
- The function of overheating extends the life of the unit.
- For models with clamps for sandpaper, you need to check whether they are conveniently located, whether it is easy to snap. Replacing the abrasive canvas should not become a problem.
Types, purpose, features of work
There are different types of grinding machines that perform one type of work, but with different results. There is a tool for rough (preliminary), medium (intermediate) and thin (finish) grinding. Part of the tool can even perform polishing.
A tree for grinding wood can be of different pitchfork, size, performance
To choose a grinding machine for wood, first of all, you need to decide for what type of work you need it. For rough grinding. aligning of irregularities, height changes. one type is suitable for finishing grinding. bringing to ideal. another type. over, both problems can be solved using equipment of different types.
Corner grinder. corner grinding machine
The well.known corner grinder can also be used to polish wood. She copes well with the function of rough grinding. Of all the possible tools, this is the most productive. If it is necessary to quickly align the large wooden surfaces. grinding floor, walls, log house. this is work for angular grinder. Minus. the surface is very uneven, you have to align all pits and humps for a long time. If this is still “passing” on the log house, then for any carpentry, the result is unsatisfactory. If only there is an opportunity to purchase another tool, use a corner grinder for grinding wood.
For wood, red emery circles are used. this is a special abrasive
For corner grinders there are special nozzles for grinding wood. The best option is petal or plate circles with sandpaper of different granularity. When installing them, the working plane is below the protective casing, you can work safely, you can move in any direction. It is necessary to carefully process places with protruding hats of nails and screws. We lower the tool on top, carefully move. A grinding circle is easily torn easily, so be careful.
Changing the granularity of the grinding circles used, you can carry out coarse and medium (intermediate) grinding. The work will take less time than if any other wood grinding machine is used. But it may take more time to bring to a flat surface, since, with a lack of experience, there will be more flaws.
When grinding wood, sandpaper is clogged, the speed of operation is reduced. In addition to reducing speed, there is another sign. the smell of burning wood. It is not necessary to change the disk right away, you can restore its performance. To do this, for several seconds, grind the metal. All adhering. resin, wood fibers, dust. burns out, the surface is cleaned, the processing speed increases again. This Focus, by the way, can be used with other grinder.
Such a nozzle is used if you need to quickly change sandpaper
If you have to clean and change circles often, a bar with Velcro is installed on the corner grinder. Replacing the sandpaper is much simpler and faster. weeded/stuck. a second business. But working with a nozzle is more dangerous. Due to its height, the grinding area is above the level of the protective casing, it does not perform its functions. During the start, it happens, it flew off an unreliable record or even the nozzle itself. They have small weight, there are no injuries serious, but this is still injuries. The angular grinder with a smooth start helps to reduce risks, but, still, it is necessary to work in gloves, protective clothes with tightly fastened sleeves, in boots that cover legs, goggles.
Ribbon grinding machine
It is called that due to the fact that sandpaper has the shape of a tape that is continuously moving with rollers. Therefore, such a grinding machine for wood is also called “endless”.
The highest quality devices include such models from the rating of vibration grinders:
- Makita BO3711. a budget model with a capacity of 190 watts, is suitable for grinding small wooden structures.
- DEWALT DWE6411. a device with a capacity of 200 W, the tape rotates at a speed of 14000 rpm.
- Bosch GSS 23 AE is an industrial model that allows you to perform high.quality wood processing.
Additional Information! One of the main advantages of vibration devices is a low noise level.
How to choose a grinding machine?
Before buying a grinding machine for walls and ceilings, wooden or metal surfaces, it is worth determining the following factors:
- Sphere and scope. All models have a certain specifics of use, therefore, the choice of a specific type of equipment and accessories to it depends on the purpose of use.
- The intensity of operation on which the power and the required number of revolutions of the unit depends.
- Consumption and cost of abrasive materials.
- Type of power source and features of the application: pneumatics, standard electric network or battery.
- The presence of a vacuumber or connection to a construction vacuum cleaner.
- Ergonomic use for a particular master.
- Vibration and noise level.
- The price of the product that is affected by the class class and its manufacturer. For small household repairs, you can choose more budget models, while for professional use on the tool you should not save.
- Warranty and availability of a service center in a convenient location.