Wall sanding generally uses a few sizes of sandpaper

Everyone knows sanding wallpaper.

What sandpaper should I use? Do you know what sandpaper is? Sandpaper is a relatively common paper used for grinding tools, which has a rough surface and a relatively high degree of friction.

There are many types of sandpaper, sandpaper can be divided into sponge sandpaper, dry sandpaper, water sandpaper, etc., when we choose sandpaper, we should choose according to different types of products, because different types of products need to use different types of sandpaper. Let's introduce to you, which sandpaper is better for sandpaper?

1. Sponge sandpaper

It is suitable for grinding smooth parts, and can be used in a variety of materials. The sponge sandpaper sanding process has the characteristics of high production efficiency, processed surface, and low production cost, so it is important in furniture.

It is widely used in production, and the final surface quality of furniture products is closely related to the sanding process. Sponge sandpaper is the main tool of the sanding process.

2. Dry sandpaper

Dry sandpaper uses synthetic resin as a binder to bond silicon carbide abrasives on latex, and coats with an antistatic coating to make high-grade products, which have the advantages of anti-clogging, anti-static, good softness and high wear resistance. A wide range of fineness options are available for grinding metal surfaces, putties and coatings. Dry frosted paper is generally made of special kraft paper.

and latex paper, using natural and synthetic resin as binder, manufactured by advanced high electrostatic sand planting process, this product has high grinding efficiency, is not easy to stick chips and other characteristics, suitable for dry grinding. It is widely used in furniture and decoration.

and other industries, especially coarse grinding.

3. Water frosted paper

Also known as water-resistant sandpaper or water-resistant sandpaper, because it can be soaked in water and polished or polished in water when in use, water-resistant sandpaper is a kind of abrasive made of water-resistant paper or treated water-resistant paper as a matrix, with paint or resin as a binder, and the corundum or silicon carbide abrasive is firmly bonded to the substrate, and its shape is in two shapes: page and roll. According to the abrasive, it can be divided into: brown corundum sandpaper; white corundum sandpaper; silicon carbide sandpaper; zirconium corundum sandpaper, etc.

According to the binder, it can be divided into: ordinary binder sandpaper; Resin binder sandpaper. The linkage line is used for production, and the efficiency is high; Because the water-resistant sandpaper uses varnish as the binder, the drying time is longer, and the drying method is generally hanging drying; The particle size of water-resistant sandpaper is generally fine, and the particle size of water sandpaper in China starts from P80, and the fine particle size is connected with the grain aroma of metallographic sandpaper.

The above is the introduction of sandpaper used to polish the wall, do you now know what methods are used to polish the wall? When we sanding the wall, we can choose some dry sandpaper, dry sandpaper is a kind of sandpaper that can be used in dry conditions, this sandpaper has a high degree of anti-static, and can be used for various metal surfaces and coatings. When choosing sandpaper, you can go to a hardware store to buy it, because hardware stores will have sandpaper, and you must pay attention to the classification when buying.

180 mesh.

Before painting the wall, the decorator will use sandpaper to polish the wall clean and smooth. There are many meshes of sandpaper, and if you use it for wall sanding, you need at least 180 meshes of sandpaper.

Common tools for wall sanding:

Light bulb: In order to facilitate the observation of the flatness of the wall, the construction staff will generally take a light bulb during the sanding process. The wattage of the bulb is generally more than 200 watts, so that the smoothness of the wall can be observed well even during the day.

Sandpaper: In the process of wall sanding, we often use 80 600 mesh sandpaper. The purpose sandpaper is called coarse sandpaper, and the purpose sandpaper is called medium sandpaper; Sandpaper with more than 320 mesh is called fine sandpaper.

If the sandpaper is too thick, the wall may be scratched; If the sandpaper is too fine, it will be very difficult to sand, and it will be difficult to polish and smooth. Therefore, the choice of sandpaper is neither coarser nor finer, but to match the wall putty.

Precautions for wall sanding:

In order to observe the flatness of the wall at all times, it is recommended to hold a light bulb of more than 200 watts during the sanding process. The choice of wall sandpaper, not the coarser or finer the better, generally start with the fine sandpaper test, if the sanding is difficult, then change the coarse sandpaper, but in the end you still need to use the fine sandpaper to re-polish again, to ensure that the wall is smooth and scratch-free.

In order to ensure the service life of the wall, it is best to choose water-resistant putty for wall putty, which will bring certain difficulties to the wall polishing of the construction personnel. After the putty is completely dry (more than 7 days), the bonding strength is high, the surface structure is firm, and it is more difficult to sand. During construction, it is recommended to polish the first time with 120 mesh coarse sandpaper, and then use 360 mesh or more fine sandpaper for the second time.

Generally, 360 is used, and if the putty is hard and not grinding, the decoration workers will use 240. Generally speaking, it is best to use a small one, because the small one looks better after the wall paint.

Wall polishing refers to the polishing of putty after the putty batch is scraped on the wall, in order to make the wall smoother, the surface more delicate and uniform. Wall polishing is not only related to the final flatness of the wall, but also an important means to solve some minor defects in the wall decoration.

The common number of sandpaper meshes (the number of sand grains per inch) in wall sanding is . Among them, it can be classified as coarse sandpaper as medium, and above 320 as fine sandpaper. If the sandpaper is too coarse, it is easy to cause scratches, and if the sandpaper is too fine, it is difficult to sand it evenly.

Therefore, the choice of wall sandpaper is not as thick as possible, nor is it as fine as possible, but it is advisable to match it with wall putty.

In the process of wall sanding, 80 to 600 mesh sandpaper is commonly used.

Among them, the mesh sandpaper is called coarse sandpaper, and the mesh sandpaper is called medium sandpaper, and the sandpaper above 320 mesh is called fine sandpaper. If the sandpaper is too thick, there may be scratches on the wall, and if the sandpaper is too fine, it will be very difficult to sand, and it will be difficult to sand. Therefore, the choice of sandpaper is neither coarser nor finer, but to match the wall putty.

In actual operation, it is necessary to take the flatness of the wall as the primary reference target, generally test with mesh sandpaper first, if the polishing is more convenient, and the wall can be polished flat, then continue to use, if you feel difficult, then replace the coarse sandpaper with a low mesh number and then test.

What are the types of sandpaper?

1. Sponge sandpaper is a relatively common sandpaper, which is suitable for polishing the smooth parts of various materials and items, and is often used for surface grinding of furniture products.

2. The fineness of dry sandpaper is very rich, and it is suitable for polishing metal surface, wood surface, putty and coating, and is also widely used in wood processing, stone processing and even precision mold grinding. This type of sandpaper has many advantages, such as anti-clogging, anti-static, good softness, high wear resistance, and so on.

3. Water sandpaper generally needs to be used with water, wet, soaked, and running water, the sand grain material is usually silicon carbide, and the gap between the sand particles is small, because the chips will flow out with the water flow during grinding, so the durability will be stronger than the dry sandpaper. The application range of water sandpaper is also very wide, and it can often be seen in stone grinding, hardware processing, mold processing, wall putty grinding and other fields.

The above content refers to Encyclopedia - Sandpaper.

1. Use 360 model sandpaper, of course, in the case of hard putty and difficult grinding, the construction personnel will also use 240 model sandpaper.

2. Wall polishing, as the name suggests, is to polish the putty in order to improve the flatness of the wall after the putty is scraped.

3. Wall polishing is not only related to the final smoothness of the wall, but also an important way to deal with wall defects.

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Wall is one of the key projects in home decoration, because this project covers a wide area, so all details need to be dealt with, otherwise it will have a great impact on future life. So, how much sandpaper do you use to polish the wall? What do you need to pay attention to when polishing the wall?

Let's take you to find out. How many mesh sandpaper is used to polish the wall, generally use 280 mesh and 360 mesh sandpaper, first use 280 mesh sandpaper to polish the first time, and then use 360 mesh sandpaper to do Zhaoye's final sanding treatment. Because the surface layer of wall putty will be rough and hard, it is necessary to use 280 mesh sandpaper to treat the protruding parts first, and finally use 360 mesh sand and burning paper to smooth it, so as to ensure the flatness of the surface layer of putty.

Precautions for wall polishing 1, when polishing the wall, whether it is carried out during the day or at night, it is necessary to hold more than 200 watts of bulbs to construct together, so that it is convenient to observe the flatness of the wall at any time. 2. When choosing sandpaper for polishing the wall, it should not be too thick or too fine, you need to test it first, and you need to replace the coarse sandpaper if you can't move. Until the end, the wall is re-polished with fine sandpaper, so that the value can be maintained to ensure the meticulous and flat surface of the wall.

3. Usually the more responsible construction personnel will recommend the owner to use water-resistant putty, which can improve the service life of the wall. But this type of putty takes a lot of time during construction, and the construction process will also have a certain degree of difficulty, so there are many construction parties who will come up with various excuses to refuse to use this kind of putty. 4. The bonding strength of putty is very critical, which directly determines the service life of putty, as well as water resistance.

Therefore, when purchasing putty, you need to choose high adhesive strength. Article summary: The above is all about how much sandpaper to use for sanding the wall and what needs to be paid attention to for wall polishing, I hope it will be helpful to you.

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