All about bar sanding

During construction and repair work, various wooden materials are used. For interior and exterior decoration, timber is often taken. At the same time, structures made of it must be subjected to special processing and grinding, which will make their surface even and more aesthetic. Today we will talk about how to properly grind the timber, as well as about what is the best way to do it.

Most buildings are made of non-planed material with uneven bevels. This can significantly spoil the appearance of the structure, therefore, in this case, additional finishing is required, both outside and inside the house. A pre-processed timber has a more aesthetic appearance. Often, after its installation, the coatings are not finished with other decorative materials, therefore, the use of this wood in most cases allows significant savings.

Wood treatment must be done before applying antiseptic and other protective compounds. The sanding procedure significantly extends the service life of the structure, since various protective impregnations on the surface of such a tree penetrate much deeper.

This material can be processed by all kinds of methods and with the help of various devices. Each method has its own pros and cons. The following tools are most commonly used.

• Belt sander. This option is considered optimal for sanding wood surfaces. This unit is the most powerful of all manual machines. It will save a lot of time and effort, as it can handle processing faster than other equipment. In addition, the device allows you to align all the end parts of the structure, remove even the largest irregularities, and, if necessary, form curved shapes.

• Angle grinder (grinder). This tool will prove to be a versatile option for woodworking. In this case, you need to choose the right attachments for grinding. Most often, it is these devices that work with materials for painting. In the process of carrying out the procedure, it is better to keep the technique at minimum speed.

• Electric drill... This tool is used in conjunction with a special grinding wheel. Equipment, as a rule, is used only when there are no special requirements for accuracy and evenness.

Remember that before starting work with a grinding device, the surface of the material should be prepared for this. To do this, you can use a special sandblasting machine or take a simple sandpaper (it is better to use a coarse-grained one).

In the process of pre-treatment, the surface of the wood is gradually leveled, the number of chips becomes minimal. If you use glued laminated timber during construction, then you can immediately use a fine abrasive. In any case, do not forget that you will not be able to completely sand the wood with a tool.Almost any such structure has hard-to-reach areas that will have to be leveled manually.

To properly grind the timber with your own hands, to make it completely smooth, some important nuances of this procedure should be taken into account. Do not forget that sanding a newly sawn timber is strictly prohibited, since fresh material can quickly clog all the attachments. If wood coatings have acquired a bluish tint, then before the procedure, it is necessary to whiten such a surface using abrasive elements. The grinding technology itself may differ depending on what kind of timber structure will be processed.

When leveling the end sections with a grinder, work should be carried out in several stages, because it is this part of the product that is most often exposed to the negative effects of moisture, begins to swell, crack... Grinding the end should start with a rough alignment, then you can start finishing and polishing (it is better to do it with a grinder).

Rough alignment provides for the removal of black wood pigment from the surface. A small pile should appear at this stage. Finishing sanding involves getting rid of lint, mechanical damage and dents. The polished material must be additionally processed with a vibration nozzle, sandblasting device. This will allow you to finally get rid of minor scratches and other defects that have arisen during work. The stage of impregnation with protective substances is mandatory for all types and species of wood.

A slightly different technology is provided for laminated veneer lumber. This type requires basic grinding immediately after the final assembly of the structure, because this wood is most susceptible to various negative atmospheric influences. In addition, during drying, the fibers of the laminated veneer lumber gradually begin to bulge, and it is almost impossible to remove them by simple grinding.

When leveling the surface of a round timber wall, you will need angle grinder, but for hard-to-reach areas you can also use an electric drill or use a special shallow grinder attachment.

Remember that even when processing products by manufacturers, all protective impregnations are carefully removed using special abrasives, since after grinding new layers of compounds and antiseptics will have to be applied. Grinding the profiled bar should be carried out in two stages. First, the leveling is carried out using a coarse abrasive. After complete shrinkage, the final polishing is done.

In the process of grinding the timber, it is worth adhering to some important safety rules, since the formed small sharp particles of wood can seriously injure a person. In addition, the smallest dust is quite capable of easily entering the respiratory tract.

Grinding is best done after thorough drying of the material (especially for profiled surfaces), but before the installation of door and window structures, the installation of ceilings and floors. This limitation is due to the abundance of dust that remains after leveling.

Before starting work, you must carefully prepare the wall coverings from the timber... If you are going to carry out the treatment indoors, then first of all you need to completely get rid of the resin that comes out. You can use a small scraper to do this. Large clots should be removed with special solvents.If the resin is not removed, then it will quickly render the abrasive unusable, clogging its structure, and this will cause the paint to subsequently not be able to evenly lie on the surface of the material.

Before starting grinding, be sure to pay attention to the parameters of the technical equipment. The grinder must have a power of at least 1 kW. Using a weaker apparatus can lead to the formation of grooves on the surface, the removal of which will be quite problematic. In order for the grinding to go as smoothly as possible and the result to be of high quality, you should monitor the progress of the machine and the direction of the wood fibers. They must match each other.

Do not forget to stock up on building paint in advance for further coating the timber. After sanding, it quickly begins to lose its attractive appearance, darkens, which can negatively affect the future coating. Therefore, it is recommended to apply pigments faster. Otherwise, you will have to re-sand the surface.

For information on how to grind a timber with your own hands, see the next video.