Polishing machine from an angle grinder with my own hands
How to turn an angle grinder into a polishing machine. Is it worth polishing a car with an angle grinder?? Self-made grinder from the angle grinder
Construction and repair work is not without cutting, scraping and grinding of different surfaces: metal, wood, stone. Therefore, you can not do without a quality angle grinder or grinder. Angular grinder. the colloquial name of the electric tool, the main purpose of which is abrasive treatment of metal, and other materials. Today such a tool is widely used for cutting metal, stone and wood, as well as for processing various building materials, including bricks and concrete. Another name of the tool. angle grinder. The familiar name “angle grinder” appeared due to the fact that the first examples of angle grinder appeared in the Soviet Union only in the 70s, and they were manufactured in Bulgaria. The tool has a cylindrical body, a nozzle, and a side handle.
Buy angle grinder (angle grinder) you can in the online store “Perestroy Ka”. a large selection of both models and brands. It is possible to buy in bulk. Specialists from “Perestroika Ka” and told us about the features of bolsters and grinders.
Existing types of grinders
Industry produces several types of machines, differing both by design and purpose. Here are the main ones:
- Eccentric or orbital, in this case, the sole of the tool simultaneously rotates around its axis and on some orbit. It turns out that each time it goes a little bit in a different place, so scratches and burrs are grind with each pass harder and harder.
- Vibrating model. Here the working soleplate reciprocates with about 20,000 movements per minute. It is this motion that is responsible for the grinding process.
- Angle grinder, which is commonly referred to as “angle grinder”. With this tool is carried out rough machining of parts, large logs, etc.п. For processing are used abrasive discs of the required grit.
- Belt sander, which is usually used for work on large surfaces. Structurally, it represents the rollers, driven by an electric motor, on which the sandpaper belt.
How to turn an angle grinder into a wood grinder
For grinding I use flat grinder, but the rate of processing there is very low, because the sole of the grinder is flat and to level the surface of a board, you must sometimes remove a large layer of wood to grind roughness. In addition, this grinder does not process small parts, as well as workpieces oval in shape. So I’m going to make a complete grinding machine and looking for a suitable motor for this purpose. In the meantime, for sanding wooden workpieces I use the most primitive little machine tool, which I made on the base and. the angle grinder is fastened to a wooden board, 30 mm thick base, with an M8 bolt, screwed into the hole designed for the handle, and a metal clamp. Under the clamp is placed a strip of rubber in order not to damage the plastic body of the angle grinder. In the board made a small indentation for the wheel with sandpaper, otherwise it would catch on it. Horizontal table. another board, which with the help of self-tapping screws is attached to the board base. The second support for the table is another piece of 30 kerb board. The base and the table are very stable, and it is very important that the angle grinder does not shake when working. On this table it is now possible to grind very quickly and qualitatively small workpieces for wooden articles, as well as to “rub off” with sandpaper unnecessary part of wood, which one does not want to cut long and laborious or with a knife. The most important advantage is the ease of manufacture and the ability to quickly disassemble in case it is necessary to use the angle grinder for its intended purpose. At work the workpiece is placed on the table and, as it is set at an angle of 90 degrees to the plane of the circle, it is possible when processing workpieces to achieve right angles. The table was not made movable with the possibility of changing its angle of inclination, even though I would have liked to, but the grinding wheel is very small, so the table would have to be lowered below the base on which the machine stands. However, if you put it on the edge of the workbench, you can adapt below the plane of the table top and an inclined table to grind parts at least at an angle of 45 degrees. If in the near future will not be able to make a real grinder with a big wheel, I have to go this way anyway, to be able to grind workpieces for picture frames. For safety reasons, the angle grinder does not have a lock on the power button. On the contrary, there, to turn on the tool, you need to simultaneously press two buttons. That’s why I had to make up some mechanism on my self-made device, which allows fixing the “button” in the on position. I couldn’t think of anything better than using a strip of rubber from a car camera, otherwise I would have to work with one hand and keep the button pressed with the other. Now I pull the rubber on the “trigger” when I switch it on, and at the same time I press the button-fuse. The rubber is tight and keeps the tool in the on position. To turn the angle grinder off, I simply remove the rubber from the trigger. The machine tool is mobile, which is very convenient: you can carry it in the right place and rotate it as needed for convenient processing of workpieces. I try to work with it outdoors, not indoors, because too much dust is generated when sanding wood. It is impossible to collect it with a vacuum cleaner here. The base-plate is fixed on the workbench or table with a clamp, therefore it is possible to fix it outside on any table. The main thing that was where to connect the grinder. I use for this
Angle grinder, simply. “angle grinder”, has three main uses.
However, for convenience and to expand the capabilities of the tool, invented a lot of devices. Let’s do a quick review:
How to make a wood grinder out of an angle grinder
For grinding I use a surface grinder, but the speed of processing there is very low, because the sole of the grinder is flat and to level the surface of a board, sometimes you have to remove a large layer of wood to grind roughness. In addition, this grinder is inconvenient to handle small parts, as well as workpieces of oval shape. So I’m going to make a complete grinding machine and looking for a suitable motor for this purpose. In the meantime, for grinding wooden workpieces using the most primitive little machine, which made on the basis of and. the angle grinder is fixed on a wooden board, 30 mm thick base, with a bolt M8, screwed into the hole designed for the handle, and a metal clamp. A strip of rubber was put under the clamp so as not to damage the plastic body of the angle grinder. There is a small indentation in the board for the sanding wheel, otherwise it would get caught in it. The horizontal table is another board, which is fastened to the board base with self-tapping screws. The second support for the table is another piece of thirtysomething board. The base and table are very stable, and it is very important that the angle grinder does not shake when working. On the grinder you can now quickly and accurately grind small workpieces for wooden products, as well as “scrape off” with sandpaper the excess wood, which you do not want to cut or cut with a knife. The most important advantage. easy to make and the ability to quickly disassemble in case you need to use the angle grinder for its intended purpose. When working, the workpiece is placed on the table and, since it is set at an angle of 90 degrees to the plane of the wheel, it is possible when processing workpieces to achieve right angles. I did not try to make the table movable with the possibility of changing its angle of inclination, though I would like it very much, but the grinding wheel is very small, so the table would have to be lowered below the base on which the machine stands. However, if you put it on the edge of the workbench, you can adapt below the plane of the table top and an inclined table to grind parts at least at an angle of 45 degrees. If in the near future will not be able to make a real grinder with a big wheel, then I have to go on this way anyway, to be able to grind workpieces for picture frames. For safety purposes, the angle grinder does not have a lock button. On the contrary, there, to turn on the tool, you need to simultaneously press two buttons. Therefore, I had to invent some mechanism which allows to fix the “trigger” in the “on” position. I couldn’t think of anything better than using a strip of rubber from a car camera, otherwise I would have to work with one hand and keep the button pressed with the other. Now, when I switch it on, I pull the rubber over the “trigger”, simultaneously pressing the fuse button. The rubber is tight and keeps the tool in the switched state. To switch off the angle grinder, I simply remove a rubber from the trigger. The little machine tool is mobile, which is very convenient: you can take it to the right place and turn it as needed for convenient workpiece processing. I try to work with it outdoors, not indoors, because it gets too much dust when sanding wood. To collect it with a vacuum cleaner here is impossible. The base-board is fastened to the workbench or table with a clamp, so it is possible to fasten it to any table outdoors. The main thing is to have somewhere to connect the grinder. I use it for this
Angle grinder, simply. “angle grinder”, has three main uses.
However, for convenience and to expand the capabilities of the tool, many devices have been invented. Let’s do a quick review:
How to make a belt sander from an angle grinder
The mount to girdle the angle grinder will be made from a piece of thick steel, about 10 mm thick. Drill a hole under the neck of the angle grinder.
Then we sand and grind to make it look nice and safe.
Drill a hole with the foot of the clamping device.
Then we thread in the wide side.
The end result is that this mount can easily be put on a bolt and clamped to hold everything in place.
Now you need to make a roller, which will rotate the belt of sandpaper. We take a chipboard and with the help of nozzles of large diameters saw out rounds. To get a wide roller we glue the rounds together.Then use a feather drill bit to drill a hole in all of them at once.
Then we clamp it in a vice and make the inner hole for the hexagon with a triangular file.
We take a wide nut and make notches on the surfaces with a file.
They are needed to keep the nut in the wood better.
We dilute two-component epoxy glue and glue a nut with notches in a wooden pulley.
After the glue dries, we clamp the roller in the lathe.
Grind under the ellipse. This is to keep the band from coming off. Then we grind until smooth with sandpaper.
Now it comes to the second roller. It is made of three bearings pressed on the roll.
Weld the plate. The result is the U-shaped piece that holds the roller.
To prevent the shaft from flying out, we fix it with welding
Now to make the frame. We need two steel pipes of different diameters, so that one fits into the other.A flat plate is welded onto the larger diameter pipe. It is needed in order to press on the tape during polishing.
To the thin tube, we weld a roller made of bearings.
We take a ring of sandpaper (sold in construction stores), put the tube into the tube and estimate the approximate size of the entire device.
Long pipe ends are sawed off. Make a wide groove in a thin tube and a wide groove in a thick tube. The hole.
To the ring fixture. A piece from a pipe.
There is no need to send your car to the service or buy tons of expensive products in specialized stores. To restore the machine is very simple and economical. using a quality polish, special paste and an ordinary angle grinder. This way you not only save money, but you will be sure of an excellent result.
Types of tools for polishing
Even the most reliable lacquer coating sooner or later fades. because of that chips and cracks appear on the car body surface. And that’s exactly what polishing removes, giving your metal horse back its original appearance. Of course, in order to make the game worth the candle, you need to choose the right polish and paste:
- Abrasives. Polishing with these agents removes abrasions and scratches from a car’s surface. Remember that such agents at the same time destroy a small layer of lacquer, so after polishing the car it must be restored. Of course, you should not abuse the abrasive polishing. too frequent use of such products can destroy the paint coating of the car body;
- Non-abrasive substances. With the help of such means carry out protective polishing. To make your car look presentable, this procedure should be performed at least once a year;
- Silicone polishes. These agents fill the smallest cracks in the bodywork and give the car a nice shine. Often they are used in conjunction with abrasives. to fix the polish.
About the prices
If you calculate the approximate cost of the total amount of work, the car centers for polishing will announce the price of 150 u.е. The price will include polishing with all the tools offered by the center. To be sure of an excellent result, leaving the car in other people’s hands is not always possible. The more so that many of such services do not take responsibility.
Hand-made work is much cheaper. On average, a can of polishing paste in an authorized store will cost more than 15 cu.е. One can is enough for five cars. will cost 5.е. If you do not have angle grinder or polishing machine, you can borrow from friends or rent, as a last resort, fit a drill with the ability to adjust the speed. In the end, the total amount will not exceed 30 U.S. dollars.е. In addition to significant savings, you will be assured of quality work done with your own hands.
Making a grinder from an angle grinder
Many may say that “angle grinder” is the same as an angle grinder, but there are some subtleties. Keep in mind that the angle grinder has a very high speed and often quite a decent weight. To polish the surface angle grinder necessary to have considerable experience in this matter and use special polishing discs and wheels. Grinder has a much lower engine speed and weight. To work with the factory grinder does not require much experience and skill. Independently make a good angle grinder from the angle grinder, not inferior in its parameters to the factory machine, you can only by finalizing its electrical circuitry, by mounting the regulator at lower speeds and by using special grinding attachments.
For minor damage, an ordinary angle grinder or a hand drill will be enough. The grinding discs are made of wool or foam rubber. Use a rotary control to avoid unnecessary scratches and abrasions. The necessary type of paste is applied to the wheel and a little bit to the work area.
Polish crosswise, moving progressively vertically and horizontally. This will allow you to apply the paste evenly and properly treat the surface, the main thing is that the paste when working does not dry out. Polishing is carried out until the desired shine appears. Any excess paste should be wiped off with a soft cloth or tissue.
After the area is polished, silicone paste is applied and the same is done with a softer wheel. The entire job takes several hours. The final step is to apply a protective layer with a soft cloth or a special glove. The layer should be evenly distributed so that there is no surplus polish, all the runs should be cleaned with a napkin.
A belt sander from an angle grinder
A very handy, manual belt-sander from an angle grinder can be made with your own hands. With such a tool is good to sharpen axes, knives, etc. Work the surface at any angle, giving it an even plane. In general, anyone who works with iron or wood, will appreciate this mini-machine.Sharpen the cutting edge of the axe:
How to make a belt sander from an angle grinder
The bracket for the angle grinder’s girth will be made of a piece of thick steel, about 10 mm thick. Drill a hole for the neck with an angle grinder.
Now it is necessary to make a roller, which will rotate the belt of sandpaper. We take a chipboard and with the help of nozzles of large diameters saw out rounds. To get a wide roll we glue the rounds together.Then with a feather drill, we drill a hole in all at once.
Dissolve two-component epoxy-based glue and glue the notched nut into the wooden roller.
Grind under the ellipse. This is to keep the band from flying off. Then with sandpaper grind until smooth.
Now let’s make a frame. We need two steel pipes of different diameters so that one fits into the other.The flat overlay is welded onto a pipe of a larger diameter. It is needed in order to press on the belt during grinding.
We take a ring of sandpaper (sold in construction stores), insert the tube into the pipe and estimate the approximate size of the entire device.
Area of application
The market offers angle grinders of three types: household (with one handle), professional (with two handles) and industrial. Domestic angle grinder. the best option for short-term use in the home. They are not very productive and powerful, their capabilities are limited, so every 15-20 minutes they must be turned off. Advantages are low cost and ease of use.
Professional angle grinder for grinding metal is more profitable, as it has sufficient power and a wide range of functions. Its nodes are made of more durable materials, so you can turn it off less often. For grinding and polishing, you can use wide discs, allowing you to get a mirror shine. Models with adjustable speed are especially convenient.
Professional tools are used in machine shops and on construction sites. For enterprises that process metals, industrial models are preferred, capable of working almost around the clock without shutting down.
Advantages and disadvantages
Domestic angle grinders are lightweight and easy to use. If the amount of work is small, it is not worth spending a lot of money.
For works related to construction and car repairs, it is better to buy a professional model. If in the workshop the tool can be connected to the mains, then on the construction site it is not always possible. But before you buy an angle grinder with a battery must take into account that the battery eventually gets old, so it should not discharge completely.
Angle grinder is a rather dangerous tool, which requires compliance with safety rules. The worker should have protective goggles, overalls, gloves, respirator. The disadvantages include the need to purchase a separate nozzle for each type of work.
Is it possible to polish with an angle grinder with adjustable speed
A very frequent question I am asked. Is it possible to polish with a ball sander?? I have a cool angle grinder there is an adjustable speed. I want less rpm I want more.To which I respond it would be more appropriate to buy a drill bit to wear a polishing wheel. Yes, it is extremely uncomfortable to polish, but in the absence of fish and crawfish. Drill you can polish but it is if you painted your car and the sense of spending money on a polishing machine reduces to zero because after the polishing of one or two elements you simply drop it to dust because even though she looks like a cigar ball she also did not work and do not perform the functions of angle grinder. I suggest to watch video where I make the review not bad in my opinion angle grinder and just started a theme of polishing and showed than it is necessary to polish cars.
Publication date: April 10, 2017. Category: Automotive equipment.
No matter how carefully the driver exploited his favorite “iron horse”, sooner or later on the surface of the paintwork of the car will begin to appear small scratches, chips, scuffs and cracks. Such damage occurs not only as a result of careless driving, but also because of flying toward small stones, branches, temperature changes, and much more. To renovate and protect the paintwork of your car, you just need to buy an angle grinder and pick up the necessary circles for polishing cars.
Polishing discs have different characteristics and are suitable for different purposes, so when choosing products, you need to pay attention to their types and scope of use.
The simplest polishing machine
The easiest way to make your own hands polishing machine, designed to work with grinding discs. To create this device, the following basic details will be required:
The electric motor can be removed from various electrical tools and appliances. So, for example, fit components of a computer power supply unit or a disk drive.
You can also use the electric motor from the fan, and to drive the motor is suitable household battery.
In addition to the above-mentioned components, you need a board, it should be sanded with sandpaper. Next, the battery and electric motor are fixed on the board with screws and connected with wires. Also in this circuit must be installed a switch, fixing it to the board. Wires must be secured with a stapler to prevent them from coming loose.
The working element of the grinder of the design under consideration is represented by a wheel. You can use branded products or you can make a sanding disc of sandpaper with your own hands. To do this it is necessary to cut two sectors from a fragment of the source material and glue the back sides of the sectors together.
To ensure the drive of the abrasive disk from the axis of the electric motor two bushes are required. Diameter of these devices are determined on the basis of the corresponding parameter of the motor axis. It should be taken into account that different electric motors have different diameter axes. The considered grinder can be used to process both wooden and metal surfaces, including for bodywork.
Making a grinder from an angle grinder
Many may say that the “angle grinder” is the same as an angle grinder, but it hides some subtleties. Keep in mind that the angle grinder has a very high RPM and often quite a decent weight. To polish the surface with an angle grinder is necessary to have considerable experience in this business and use special polishing discs and circles. The grinder has a much lower engine speed and weight. To work with the factory grinder does not require a certain experience and skill. Independently make a good angle grinder from the grinder, not inferior in its parameters to the factory machine, you can only by finalizing its electrical circuit, by mounting the regulator at lower speeds and by using special grinding attachments.
Remember that the functional parameters of such a homemade sander are determined by the individual parts from which it is assembled. In this regard, you should use the electric motor from the fan, as the motor from the computer has less power, which may not be enough for some types of work. In addition, sanding discs made of sandpaper are not ideal for this type of application. Instead, you can buy branded circles with a small diameter, such as a drill.
You can create with your own hands and a more powerful stationary version of the grinder. For it, you can use the motor from a washing machine and equip it with grinding discs of large diameter. In addition to polishing, on such a device you can install grinding and abrasive discs.
Making a grinder out of a computer hard drive
Any, used hard drive can be converted into a miniature sander. To do this, you need to perform the following steps:
- Completely disassemble the hard drive and remove from the case everything to the left of the magnetic disks;
- cut out a working circle from sandpaper, make a hole in the center of the circle for the spindle;
- Glue a few strips of double-sided adhesive tape on the rotating disk of the screwdriver and fix sandpaper on it;
- Make a protective screen that protects the eyes from the possible flight of the manufactured sanding disc;
- to connect the finished construction to a power supply from a computer and use.
Of course, such a design does not have high power, but to sharpen a small knife or scissors is quite possible.
Variants of homemade designs
It is not difficult to make a grinder with your own hands. The main thing is that it corresponded to the types of work that the master plans to perform. From an economic point of view, it is better to take the components that are at hand. If you have to buy the components of the device, then the budget of the device, made by your own hands, will be comparable to the factory model. All other things being equal, it is better to give preference to an industrial tool, because its quality is incommensurably higher. Let’s take a look at some devices made by our own hands. Perhaps one of them will suit your needs.
Grinder from the angle grinder with their own hands
As the name suggests, the angle grinder is designed for grinding. Stripper discs are very good at hard work: stripping off old paint, metal overlaps, or corrosion. For finer cleaning, special sandpaper tips of different grit sizes are sold.
Models for domestic use operate in one mode, with a speed of up to 15,000 rpm. per minute and the average speed is 11,000. This speed is excellent for sawing materials, but it is too high for sanding.
The motor of the angle grinder has excessive power. For polishing, 300-400 watts will be enough.
Grinder from the angle grinder will have more weight compared to the factory tool, but there is an opportunity to adapt the self-made, which will increase comfort when grinding.
For angle grinder you can make a simple attachment, which will turn the machine into a miniature belt-sander. In this case, the work is performed without a protective cover.
If you do not want to use the device, you can adjust the number of revolutions of the engine. Independently upgrading the circuit will require specialized knowledge in electrical engineering.
On professional devices you can set the number of revolutions manually, though, their cost starts from 200 dollars.
Making a grinder out of a drill
From a drill with your own hands you can assemble a productive belt sander. In this case, the tool acts as a drive. The construction itself is simple and does not require significant investments. To make your own hands will need the following materials:
- Metal rods with and without threads;
- profile tube;
- steel plate;
- wood glue.
It is necessary to take care of the availability of locksmith’s tools, an inverter and devices for sawing metal.
Making pulleys. Master and slave pulleys are designed to transmit torque from the drill to the grinder. They are made of plywood.