We who work with wood have presumably sooner or later encountered the dissatisfaction of wood distorting, breaking and evolving shape. This is the kind of thing that specialists have been reading up for a long time and is still generally an issue in the timber business. Clearly, nobody would enthusiastically pick a faulty piece of wood over a decent, straight one.
To this end you actually see distorted or generally inadequate 2 by 4s and such at home focuses, that are taken out from the slick heaps of wood after individuals dig through the stack to track down straight ones. I envision they return these deficient sheets to the timber yard and quickly return the money meuble tv 180 cm in question. This issue clearly costs the wood business a huge number of dollars consistently in the US alone.
As simple, helpful, and monetary it is to work with wood, there are as yet these drawbacks to manage – also potential sturdiness issues when untreated. We should investigate the science behind why wood twists and breaks, so we can all the more likely comprehend and manage such difficulties. Appropriately managing wood absconds requires first remembering them and afterward understanding some solution for them.
I covered the fundamentals of the different kinds of wood distorting in another article “Managing Warped Wood”, however in this article we’ll get into the whys and wherefores of the study of wood twisting, yet wood breaking too. There are a few likely purposes behind wood showing mathematical and primary imperfections, some because of inward bunches and grain irregularities and others because of post-cut climate conditions.
Wood is a natural substance, and accordingly, is significantly affected by its environmental elements. All the more explicitly, it is continually attempting to arrive at a condition of harmony with the encompassing air. At the point when wood is first felled, it is designated “green wood”. Green wood, contingent upon type, can contain more than half of its weight in water.
This water that is normally held inside wood is separated into two classifications: Free water and bound water. According to the names, free water will be water that is just held inside the wood through fine activity, and bound water will be water that is bound inside the wood by means of hydrogen holding. At the point when wood is dried, the free water will be quick to leave the wood.
Fiber Saturation Point of Wood (FSP)
This is a vital intersection in the wood-drying process, and characterizes the dampness content when all free water has been taken out from the wood. Up until this point, wood shrinkage as well as strength change won’t be a worry. It is starting here that twisting and changes in strength start. FSP is by and large accomplished at 25% to 30% dampness content.
“In any case, for what reason does wood should be dried?”
In the event that wood simply psychologists and twists when you dry it, for what reason make it happen? Indeed, as I referenced prior in this article, wood is continually on an excursion to arrive at balance with the encompassing air. This intends that in the event that you don’t dry it in a controlled climate before use, the wood will doubtlessly psychologist or twist in your “uncontrolled” climate after you’ve cut and fit it all pleasantly some place, leaving terrible deformities and creating a wide range of issues.
When in doubt, wood will recoil as dampness leaves the wood, and it will extend as it enters. For this reason you’d need to dry the wood in a comparative climate as the one you’ll involve it in. Drying wood in a damp district and afterward shipping it to a drier one for use will nullify the point of drying it in any case, as you’ll get shrinkage!
The basic guideline of thumb is to get the dampness content of your wood as close to harmony as conceivable before use, so it won’t have to push itself to do so a while later. This is the fundamental thinking behind wood-drying. (Another stunt a few craftsmen use is to make a precautionary cut that is spotless and uniform down the focal point of the length of bigger timber to ease the pressure.)
There are likewise different advantages to drying wood. A significant primary advantage is that strength will by and large increment with the drying of wood beneath FSP. Obviously, there are a few special cases. Assuming wood is dried out something over the top, it becomes fragile and more vulnerable to influence. Underneath I will list the fundamental advantages to wood-drying for your benefit and reference:
Rot and color causing creatures by and large can’t flourish in wood beneath 20% dampness content. Additionally, numerous wood-cherishing bugs can live in green lumber.
It is lighter, making transportation and dealing with simpler and less expensive.
Dried wood, rather than green wood, has better warm and electrical protection properties.
Different completions, additives, and pastes respond better on dry wood, enduring longer also. Dried wood permits appropriate entrance of these substances.
Dried wood is by and large more grounded than green wood.
Potential Problems connected with Wood-drying