Why Do Solid Wood Dining Tables And Chairs Have Expansion Joints?

In order to prevent the deformation of furniture, expansion joints must still be reserved. The longitudinal shrinkage of the wood is not large, and generally there is no need to leave expansion joints at both ends. Some manufacturers leave seams on all sides, which looks relatively good. There are also some manufacturers who make furniture without leaving expansion joints, but not leaving it does not mean that there are no, because manufacturers are not absolutely sure about the drying of wood, generally the moisture content of wood is higher than the moisture content of air, so even if no expansion joints are left during production, furniture production There will also be seams after the completion, and a considerable part of the furniture has seams regardless of the dry and wet seasons, but the size is different.

Expansion joints are necessary in areas with large differences in humidity and dryness throughout the year. In the rainy season, the air humidity is high. Although the wood is artificially dried, the wood will still absorb moisture during the furniture production process, and the volume will increase. Generally, there is no need to leave expansion joints. Expansion joints will also appear when the climate is dry in winter; When making furniture from artificially dried wood, it is generally necessary to leave expansion joints, otherwise, after the arrival of wet summer, the large edge will be swelled and damaged.

Solid wood dining tables and chairs should leave expansion joints to curb the "thermal expansion and contraction" of the wood and prolong its life.

1. The expansion joint is to prevent the frame or corner tenon of the furniture from cracking when the wood shrinks or expands under the influence of the external environment, resulting in the loosening of various parts of the furniture and cannot be used normally.

2. In order to reduce the deformation of wood, wood has a strict drying process before it is made into furniture, and some may take more than a month to bake. In order to control the quality of the standardized manufacturers, the water content of the products sold to different regions is also different. Even so, in order to prevent the furniture from deforming, expansion joints must be reserved.