Wood knowledge, pure dry goods sharing
1. Density:
Density is based on the drying of the wood to the standard moisture content. At the same time, density is also related to hardness, strength and ease of application.
(Wood generally has a water content of 60%, used after drying, the general moisture content in the north is 12%, and the south is about 15%.) The master generally takes the face to measure the water content, and the on-line error is 2%.
2. Durability:
The durability of wood is actually its corrosion resistance, which is very important for outdoor use. Some woods are particularly susceptible to insects (and others are insect-resistant)
3. Pattern:
The pattern is a solid stripe of wood, annual rings, textures, knots, enamel and other natural details, equivalent to macroscopic texture.
4. Texture:
Texture is used to describe the direction of the wood fibers inside the tree. Straight wood textures, staggered textures, spiral textures, wavy textures, and some woods form irregular textures.
5. Texture:
The size of the cell pores and rays of the wood, usually the rough texture will have larger cell tube holes, and the caulking should be done when the surface treatment is performed.
6. Heartwood:
The non-functional wood in the middle of the trunk is called the heartwood. Its color is darker than the sapwood, more durable and able to prevent insects
7. Sapwood:
The outer, relatively soft part of the trunk. When the trees are still alive, these tissues can transport water, minerals and store food. The thickness of the sapwood varies greatly depending on the species.
8. Wood rays:
These strips of cells are arranged at an angle of 90 degrees to the annual rings. They are obvious in some woods, such as oak, as barely visible in some woods.
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