When working with wooden surface is coming to an end, the final polishing stage begins. To perform grinding without burrs, scratches, beautifully rounded sharp corners any part, you need to use a wood sander. This tool will help you perform professional grinding even for a beginner who picks up the machine for the first time. If you wish, you can make a grinding machine yourself, using only available tools.

The industry produces several types of machines, differing both in design and purpose. Here are the main ones:

• Eccentric or orbital, in this case the base of the tool simultaneously rotates around its axis and along a certain orbit. It turns out that each time it passes in a slightly different place, so scratches and burrs are rubbed out more and more with each pass.

• Vibration model. Here the working sole carries out reciprocating movements with a frequency of about 20,000 movements per minute. It is through these movements that grinding occurs.
• An angle grinder, which is popularly called a “grinder”. Using this tool, rough processing of parts, large logs, etc. is carried out. Abrasive wheels of the required grain size are used for processing.
• A belt sander typically used for large surfaces. Structurally, it consists of rollers driven by an electric motor, on which sanding tape is worn.

Making a belt sander with your own hands + (Video)

Making a belt sander yourself is not at all difficult; you need to complete the following steps:

• pick up suitable materials and details;
• create a reliable basis for securing the tool;
• install a suitable countertop;
• secure the vertical posts with tensioner and drum;
• mount the motor and drums;
• secure with sanding tape.

To process fairly large parts and elements, it is necessary to make a large copy of a serial grinder. For example, if you take an electric motor with a power of 2 kW or more powerful with a rotor speed of 1500 rpm, then you don’t need to install a gearbox. The power of such an engine is quite enough to rotate a drum about 20 cm in diameter and process parts of about 2 m.

You can also use an electric motor from an old one washing machine. In this case, the frame is made from a thick sheet of iron, preparing a place for installing the motor and carefully securing it with bolts to eliminate vibration. The design of such a machine consists of 2 drums, one of which is fixed, and the second can be tensioned and rotates on bearings around an axis. It is advisable to make the base for the machine from metal or several sheets of thick plywood. Drums are made by lathe from chipboard. The tape is cut from sandpaper sheets about 20 cm wide and secured to the frame. The larger the table size, the larger the parts can be stacked and processed in the future. Drawings finished products can be found on the web.

https://youtu.be/vDs1gBM_MW4

Making a grinder from a grinder

Many may say that the “grinder” is the same as an angle grinder, but there are some subtleties hidden here. It should be borne in mind that the angle grinder has very high speeds and often quite a decent weight. To polish a surface with a grinder, you need to have considerable experience in this matter and use special polishing discs and circles. The grinder has much lower engine speed and weight. No factory sander required to operate certain experience and dexterity.

You can independently make a good grinder from an angle grinder, which is not inferior in its parameters to a factory machine, only by modifying it electrical diagram, by installing the regulator at lower speeds and by using special grinding attachments.

Making a grinder from a drill

To turn an ordinary household electric drill into a grinding machine, you need to equip it with a special attachment - a working drum or a special support plate, depending on the task at hand.

The support or sanding pad is a plastic or rubber base with sandpaper glued on and a shank for clamping into the drill chuck. Plates with a flexible shaft are suitable for working with a loose drill, while those with a rigid shaft are best used only for a well-fixed drill.

Sanding drums for a household drill are structurally a regular cylinder, a shank and sandpaper glued to the cylinder. When using drums, the working surface of the sander is parallel to the axis of rotation.

Making an orbital sander

Currently, you can only make an orbital machine with your own hands from a broken orbital machine. This is due to a complex device for rotating the working disk, which is quite problematic to replicate on your own. You should also keep in mind that a machine manufactured by a specialized company will not cost too much, but making it yourself will be very difficult and will take a lot of time.

Making a grinder from a computer hard drive + (Video)

Anyone who has served his time hard drive can be converted into a miniature grinding machine. To do this you need to follow these steps:

• completely disassemble the hard drive and remove from the case everything that is located 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;
• stick several strips of double-sided tape onto the rotating disk of the hard drive and secure it with sandpaper;
• make a protective screen to protect the eyes from the possible ejection of the manufactured sanding disc;
• connect the finished design to the power supply from the computer and use it.

Of course, this design does not have high power, but it is quite possible to sharpen a small knife or scissors.

Vehicle, I would like to dwell on one more popular request: How to make car polish with your own hands? It's no secret that modern auto chemicals can be very expensive. Therefore, it is not surprising that many car owners strive to save money. Well, some people just like to do everything for the car with their own hands. So this article is for all of them.

We have already discussed why periodic polishing is important for the body and protruding metal parts and elements. It not only restores beautiful shine and appearance, but it also successfully fights minor defects, such as cracks, chips, rust, and scraped paint. In addition, the body surface becomes less susceptible to adverse environmental influences.

They are on sale in order to make the appearance of the car more attractive to the eyes of others. They are usually sold in tubes, bottles, aerosols, and therefore do not require any polishing machines for application. Unfortunately, they are not available to all categories of drivers, which is why many of them are thinking about how to make car polish at home.

Self-preparation technology for polishes

Before you start mastering home production, you should remember that any polishing product must contain a certain amount of an abrasive substance. To others the most important element is a binding component, and in other words, a base, which can be either liquid or silicone.

Preparing an abrasive for cleaning the body comes down to the following steps:

• It is necessary to burn a small amount of paint (about 200 grams), but it must be chromium-containing. This can be done over a fire or using a soldering iron;
• another option is to purchase ammonium dichromate and then burn it;
• in this process, a liberation of hydrochloric acid is formed, which must be evaporated after oxidation.

Now you need to make a binding component similar to the one used in the well-known GOI paste. For this purpose, we will dilute together 2 parts of stearin, 1 part of acetic acid. Mix all this with 7 parts of chromium oxide and a couple of drops of kerosene. The resulting components will combine better if they are slightly heated during mixing.

Other polishing recipes

Another recipe involves preparing a varnish restoration product if there is significant damage to the coating. It can be made at home if you use ordinary clay. Even a small amount of 100 g will be enough to polish up to 10 times. All procedures must be performed with a microfiber-based cloth, since it has a structure that is gentle on the coating.

Another popular remedy that restores well paint coating on a car is the so-called “wax polish”. You can buy it at any auto store, but it’s easy to make it yourself to save money. We will need beeswax, which is better to purchase from a trusted place so that the product is of truly decent quality. The other component is regular turpentine. The wax is finely chopped, crumbled and melted to a liquid state in a steam bath or in a microwave oven.

Pour the same volume of turpentine into one part of the hot wax, stirring constantly, achieving uniform distribution. After this, pour the polishing wax into any container or jar and wait for it to cool completely. Instead of turpentine, you can use regular vegetable oil, which creates a fatty base.

Application rules

Now a few words about how polishing is applied to the vehicle body. Before starting the procedure, you need to prepare the necessary tools: protective gloves, a mask or respirator to protect your lungs, a soft sponge, fiber for hand polishing.

The stage of preparing the car for polishing deserves special attention. The car must be washed and any remaining dirt removed from it. As soon as the body is sufficiently dry, it would be a good idea to additionally degrease the area to be treated using diluted white spirit. Before applying a new polish, remove any remaining polish to allow the compound to adhere to the surface.

Polishing procedures can also be carried out in a ventilated garage if there is enough lighting. However, it is best to do this outdoors, in dry weather, at a temperature of 10 to 30 degrees Celsius. It is advisable that there is a canopy on top that will prevent the entry of dirt, dust or unwanted sun rays, distorting perception.