Drill bit for grinding and polishing

The most indispensable tool during the repair or construction work is considered to be a drill, electric or battery powered. It helps to carry out a lot of preparatory work, starting with mixing the solution and ending with polishing wooden or concrete structures. To perform the last operation, you need a grinding nozzle on a drill, which has many modifications, with which you can work on metal, wood, concrete and plastered surfaces.

When applied

Drills with different grinding nozzles are used during the following work:

• polishing various surfaces - metal, wood, glass and paintwork;
• sweep metal surfaces from corrosion, removal of old coatings;
• grinding metal products, wood and composite materials;
• cleaning of metal, concrete and wood surfaces from burrs.

Here only the main types of operations are listed, for which they use a drill with different nozzles, in practice this unit simply has no alternative in many situations.

Variations

Nozzles on the drill for grinding can be in the asset of a home craftsman, when working on wood they have practically no alternative. Grinding nozzles differ from each other in size, shape or surface characteristics, experts divide them into the following categories:

• flat - on an external form it is circles with the pasted sanding paper;
• petal circle - the central part of the metal, and petals of various materials are attached to it.

The first version has various versions:

• rigid - for such circles special material with a sticky back surface is sold, which allows, if necessary, to carry out a quick replacement;
• similar nozzles for a rubber-based drill - using a mounting bolt, a pre-cut billet is attached to them.

Practice shows that petal circles are characterized by increased productivity, they are widely used in production.

All options allow you to work on any surface: smooth or with complex protruding fragments. To add shine you should not make efforts - you just need to drive the nozzle over the surface, and the high rotation speed will do the grinding work. For perfect polishing of the surface, we use felt or made of felt fixtures, and to give special shine to products made of wood, covered with fur. Similar devices are used when applying a protective composition - very often for this they use a flap wheel.

The classification of grinding nozzles is very conditional. As a rule, they are separated in appearance and material used:

• abrasive - serve for deburring, old paintwork;
• grinding wheel - used for finishing the surface of products to the desired quality;
• polishing wheel - used to give the surface the necessary gloss.

The quality of grinding with a drill directly depends on the size of the tool, its power, the speed of rotation of the spindle and the skill of the worker.

Each nozzle has a certain very specific look, so you need to consider them separately, taking into account the scope of application.

Nozzle plate

Such polishing nozzles are available in two types, depending on the base - plastic or cast rubber. The latter option is used more often, because surface damage, especially from wood, will not be due to strong pressure. The base of the device is covered with special paper, which is attached quite reliably due to the adhesive layer.

Of great importance sandpaper stiffness - it can be preliminary or in the professional language of builders roughing different surfaces. The same nozzles, but with a softer and finer grain paper used for finishing before painting. Before plastering the walls or applying a putty, sanding is done with such tips. The process is very dusty, so respirators and special glasses must be used.

Special Bowls

Nozzles having the form of an inverted bowl, where brushes made of metal for removing scale, rust or sanding wood surfaces. In carpentry work, they are used to highlight the texture of wood. The metal constituents knock out the fibers, and then the polishing wheel is used. Then the stain and varnish are applied, as a result, the object has a unique wood pattern, the texture clearly stands out under the varnish.

Filling bowls of softer material is used in the case when it is necessary to perform fine polishing work.

Disc nozzles

Polishing nozzle in the form of discs is installed on the drill. It differs from the structures described above in that the wire has a different direction: from the center to the edge. These types of nozzles include fan-shaped varieties or a petal circle (when the emery cloth blades are attached parallel to the base). Such products are used for stripping hard-to-reach places and require a certain skill and skill.

Another variant of the petal circle is also applied in practice: when all its small components are fixed in the form of a common cylinder.Such nozzles are used in stripping aluminum parts of radiators for machines, end and side surfaces of solidified flux after leaving a special furnace, where they are soldered.

Cylindrical nozzles

In appearance, they are very similar to a rotating drum. Make them from hard rubber, the working surface is on the side at the end. Ribbons of a certain diameter are made from emery cloth, a little more than a cylinder - they are put on the nozzle, and then the fastening bolt is tightened. As a result, the nozzle increases in diameter and securely holds the abrasive belt.

These nozzles are used for grinding glass, wood and metal, the current practical application is sanding radius holes.

This type includes the grinding drum for a cordless or electric drill, the varieties of which are shown in the photo.

Soft tips

Felt circle, nozzles of twisted rope, foam rubber, soft leathers are used in production when it is necessary to perform gentle surface treatment. They are fastened with the help of two washers, such as a grinding wheel for a drill, when it is necessary to make a miniature sharpener for small cutting tools.

Soft devices are used to work with paint and varnish surfaces, they differ from other types of polishing nozzles by their delicate attitude to any materials.. They are often used to remove technical debris after treatment from surfaces vulnerable to abrasion.

End circle

Such devices are available in the form of various geometric shapes of abrasive stone or a softer material for the delicate processing of various surfaces. Nozzles in hard-to-reach places are used for high-quality processing of smaller parts and products from precious metals.

Nozzles with an abrasive easily replace the file and are used for fine finishing of metal surfaces, while soft ones are used only for polishing.

Grinding stone

Such devices on production clean up various errors in working with structures made of various metals and concrete products, for example, nodules formed during the filling of the floor. The size of the grain of the device significantly affects the quality of grinding or polishing work.

Types of material manufacturing nozzles

Grinding discs are selected based on the material from which it is made.

1. Emery cloth - It has a large range of grain and stiffness.
2. Soft materialsTo which the vinyl nozzle on the drill belongs, perfectly remove traces of corrosion from metal surfaces, as well as old primer and putty. In the process, the metal is not heated, delicate processing increases the efficiency of grinding.
3. Grinding stones. The main application is to correct complex defects during construction, it is easy to process metal structures and concrete surfaces with them.

A large variety of materials and configurations of nozzles allows the use of a drill for grinding any surfaces. For example, a nozzle on a drill for polishing a car will bring a painted surface to shine, and small nozzles used in jewelry production will clean the most hard-to-reach places of products.

Nuances in the work

The main problem during work with a drill is the correct location of the tool relative to the surface to be machined. If you do not maintain a clear horizon when working with a circle with a diameter of 150 mm, then traces in the form of radius scratches will appear on the surface.To eliminate these negative consequences, you need to practice on a rough surface or use special tools.

There are two main types of grinding with a drill.

1. The worker holds the tool in his hands - we pointed out the negative consequences, its use in hard-to-reach places and in the processing of parts of complex geometry can be regarded as positive qualities.
2. Tool rigidly fixed on the table - this method is good because the quality of grinding becomes high. The lack of low mobility of the drill.

The tool heats up during operation, so it is necessary to take breaks to allow the heated parts to cool down. It is mandatory use protective equipment: glasses, gloves, respirator. By neglecting this, you expose yourself to the risk of injury, and dust does not contribute to the normal operation of a person’s breathing apparatus.

When processing stone, glass and wood, all means of protection must necessarily be applied, otherwise the worker should not be allowed to sanding or sanding.

Conclusion

The electric drill is a unique multifunctional tool, its use for grinding and polishing various surfaces greatly accelerates the whole process.But users should remember that the tool cannot work for a long time in this mode. The variety and versatility of the devices will help you in the one-time performance of similar work, for intensive and permanent use there are special products that will satisfy even the most demanding master, but this is a completely different topic.