Redwood is like a human, what is the "temper" and "woody" of mahogany?
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What is "woody"?
Wood is the material properties of wood, including air dry density, core color, odor, texture, pores, flexibility and stability. Each type of wood has its own different characteristics. In summary, it mainly refers to the shrinkage rate, strength and texture of the wood.
These aspects are related to the service life, function and aesthetics of the furniture, etc., and should not be underestimated. Therefore, in the process of making mahogany furniture, it is necessary to "respect the wood, conform to the wood, guide the wood, and restrain the wood."
Woody compliance
Refers to the degree of change in the woodiness of mahogany furniture when mahogany furniture has external conditions under static conditions. The lower the compliance, the smaller the change of furniture, indicating that the wood is good, and it is not easy to shape. The greater the compliance, the poorer the wood, and the easier it is. It is popular to say that it can expand and contract with the temperature of the surrounding environment. Deformation.
There are many types of mahogany wood, and the structure is more complicated. In addition to commonality, each type of wood has its own particularity.
For example, in terms of shrinkage, different woods have different shrinkage rates, and even for the same wood, the lateral shrinkage rate and the longitudinal shrinkage ratio are different. In general, the lateral shrinkage is large and the longitudinal shrinkage is small. Knowing the individuality of the wood, it is just right when the expansion joint is left.
When the carpenters made a piece of wood and saw a piece of wood, they often said the following sentence: "This wood is very big." That is to say, the piece of wood has a large deformation force and a large twisting force. After the finished product is finished, it is cold and hot. Changes in the dry and wet environment will produce more dramatic changes, such as large cracks, large twists, large expansions, and large shrinkages. Sometimes the changes will not look like the original ones, such as the original square square wood, can be twisted into Twisted, turn a few turns.
When the carpenters encounter this kind of wood, they must be extra careful when making it. Try to control it and cage it without making it change. If you encounter a small piece of wood, that is, a flat and gentle wood, the production will be simpler, but the finished product will also change, but the changes and distortions will not be particularly powerful.
Woody texture
The texture of wood, due to the different state of arrangement of wood cells, will form different textures, such as straight texture and oblique texture, and the mountain and water ripples will appear from the cross-section and the diameter section; Tube holes, wood rays, thrift and other reasons cause the surface to form different patterns, such as grimace, tiger stripes and so on.
The wood grain has the distinction between vertical and horizontal stripes, so the force of the furniture will be different. In general, the force of straight grained wood is greater than the force of horizontal grain wood. If a piece of wood that is not dried is placed under the sun, the straight lines will never warp, and the horizontal lines will be curved. .
Therefore, the horizontally-grained wood is generally used for a panel or the like, and the vertical-grained wood is often used for a part with a large force such as a leg. If this rule is violated, whether it is a sofa or a table or chair, the firmness will be difficult to guarantee.
In addition to woody
The woodiness and the woodiness are relatively relative, and there is a comparison. As long as it is wood, it will expand and contract, and it will swell and shrink. A 3-5 mm expansion joint is required on the surface of the mahogany furniture to avoid the large cracking and squeezing deformation of the furniture, so that it can cope with the change of natural temperature and humidity during use.
Since wood has sex, it is very important to go to sex before production. There are many ways to go about sex, but they can be roughly divided into three types:
One: "Baked."
It is to put the logs or plates and squares into the baking room to steam. In the early years of the baking room, mainly burning leaves, sawdust, branches, chopping wood, and later burning coal, burning oil, and then a little more, using electric heating to roast, has been similar to the electric oven. It’s not the box, but the house that only bakes wood. Bake wood for a long time, roast wood in the early years, one roast is three or five days, even a week, slowly roasting, dark fire smoked, the temperature can not be too high, can not see the open fire, otherwise the wood will catch fire, become Charcoal, after roasting, the sex of the wood is removed a lot, which is convenient for carpenters to make.
Two: "Blow".
The essence of blowing is natural drying. This takes three, five months or even half a year, one year, stacking the plates and squares layer by layer, and tidying up neatly. Each layer of boards and squares should be padded with small wooden strips, which is convenient for spacing. Ventilation and ventilation. There is a big gap between the 垛 and the 以 to take the wind. The board square material is generally coded in the shaded and ventilated place, avoiding the sun exposure and causing the wood to suddenly start.
After the yard is good, the top is to press heavy objects, such as stones, steel, logs, etc. The heavier the better. After natural wind blowing, rain, sun, snow burying, dry and wet, wet and dry, the sex of the wood is getting smaller and smaller, so the more the wood is, the easier it is to make.
Three: "bubble".
That is, throwing logs or plates and squares into the water, soaking them for a week, two weeks, or even a month, pick them up and pick them up according to the natural drying method, and then use them completely naturally.
Or after the bubble is sent to the baking room to smoke, there is an old way to speed up the speed of de-sex, that is, digging the pit to release water, adding lime or alkali, using lime water, alkaline water to soak the wood, so the time of soaking can be greatly shortened Soak for two or three days, or dry it, or send it to the barn.
After the degraded wood, the craftsmen made the furniture, the ratio of thermal expansion and contraction was greatly reduced.
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