The deformation and cracking of solid wood furniture is a common problem, "not to be cracked, not called solid wood."
Solid wood furniture must have a certain probability of self-destruction, this is an iron-clad fact, which is also a nightmare shared by manufacturers and owners.
The damage of expensive solid wood furniture is an extremely bad experience for the owner: he does not believe that such expensive furniture will have so many problems that cheap furniture will not appear; they will inevitably fall into a price-quality quality. Thinking circles; also believe that good quality must represent no cracking and deformation.
Problem export
I have encountered some demands for repairs, and I hope that we will repair them some old furniture upstairs. These homes have been in existence for more than 20 years. They used to be good in the cottage and moved to the new building. Some people were reluctant to throw it away and moved to the building, which was followed by cracking and deformation. This is not an example. If we pay enough attention and have relevant associations, we can find the key points of this problem.
This is a fundamental factor that is largely ignored: the change in modern living environment is the main cause of furniture cracking and deformation, not the furniture itself.
I explained to him the following: If it is a courtyard house, a bungalow, our furniture is almost maintenance-free, because the current building, floor heating, heating and other factors make the furniture ungrounded, and the humidity around the furniture is also generated. change dramatically. Furniture is very sensitive to temperature.
To be more detailed: if the wood moisture content is 12%, that is, it is regarded as the optimum humidity of the furniture (different requirements in different regions), the winter heating in the northern building will lead to extremely dry, and the floor heating will cause transpiration, and the moisture should be 8%. In summer, the moisture should be 20%, so the furniture is in an environment of rapid fluctuations in temperature and humidity during the year.
In addition, because of long-term storage, especially for tables and chairs, white enamel furniture will be treated with excessive drying method so that the storage process is not too deformed, and the consequences are also obvious, which is to seriously shorten the life of the furniture. If the paint is completely enclosed, the facts prove that only some of the problems have been alleviated to some extent, and it has not been fundamentally solved.
The change of the environment has become the biggest test of solid wood furniture, but after a few years, the problem is still widespread, and there seems to be no way out. The first proves that the problem caused by the use of environmental changes, the second manufacturers have not kept up with the times, continue to take the form of seam repair to continue.
Solution
So how to solve the problem? Painting? Accessories? structure? Plate? complex? What is the key core of solving the problem? We have been searching hard. This is not to say 100% to solve the problem, but at least it will reduce the problem.
For furniture, the structure is bigger than everything else. Therefore, we believe that we must rely on the process and structure to solve the cracking and deformation of furniture.
So what is the basis for the furniture to have sufficient stability? The answer is to take advantage of the rational structure of modern furniture.
panel
The longer the panel, the wider and thicker it is, the larger the pre-stress is, the more uncontrollable it is, which is quite different from the uniform material. With the simplicity of the prevailing, many desktops and coffee tables are single-panel, which greatly enhances the probability of cracking and deformation. If it is a traditional 5-in-1 plate, although it will leave a circle of shrink seams, the structure is indeed stable. Many, if it is composite material or leather furniture, there is no need to consider too much, people want solid wood, to be simple, just do not structure, the problem will be directly exposed.
There are not many ways to solve the problem. Generally speaking, thick panels (more than 40 mm) need to be dovetailed in the back. Ultra-wide panels (more than 80 cm in width) need to be crossed behind the back to prevent warping. . If the panel is attached to the underlying wooden frame, it must be left in a certain amount (ie, in the direction of the cross with the wood fiber), otherwise the plank will be opened when the wood shrinks.
The ultra-long panel is designed to prevent the hunchback from warping. It is generally controlled within 180 cm. If there are conditions, try to block the waist in the middle. The overall effect will not be affected, and the deformation rate will be reduced a lot, such as the door panel.
frame
The frame itself is the backbone of the furniture, which makes the panels light and durable and durable, as they are the main structure of the force. If the panel is thick enough to be used directly as a frame, it is called solid wood furniture.
The problem of the frame is generally less, and some parts are dislocated. Most of the grooves left when the plate is installed are too shallow. The expansion space is not left to the core plate, and the frame or other connection structure is directly opened.
Another problem is that because of the problem of placement, such as the weight of the wardrobe is very large, the ground is not necessarily flat, otherwise the time will be long, the weight will cause the overall frame deformation, although not serious damage (the wood is elastic), But it affects the experience of opening doors and drawers.
Door panel
Because the door panel is vertical, unlike the desktop, it will face problems such as water ingress and debris, and because there is no force control, it is better to have a five-in-one board structure, which is a door (or a large drawer). The panel) is a combination of five pieces of wood. This will ensure the component of the force, and will reduce the probability of deformation.
Because of the pursuit of simplicity, the single-door door is prone to structural problems, because usually only the hinge is connected to other structures, so it is easier to deform itself, and it is necessary to strengthen the back to increase the stability.
drawer
There are two problems with poorly constructed drawers.
1. The in-line panel cannot be opened after being damp, or the gap is too large after heating in winter. If you want to reduce the drawer problem, the top surface of the drawer panel will be 5 degrees inclined, which will reduce a lot of after-sales service.
2. If the bottom plate of the drawer is solid wood, the direction should be as shown in the figure below, otherwise the coefficient of expansion will be large, which will affect the use of the guide rail.
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