The method of drying depends on the sawmill and the type of lumber being dried. The other pieces of lumber will be dried using either air drying, kiln drying, or vacuum drying. This is because it is extremely difficult to dry these large pieces of lumber thoroughly. This process usually consists of letting the wood dry to prevent decaying and to let the wood shrink and reach its equilibrium moisture content.īecause of the large size of timbers, they are usually sold wet or green. The lumber that has been cut into boards and dimensions is moved to an area in the sawmill for drying or seasoning. For each cut, the wooden log is re-evaluated by the optic sensors and the Headrig sawyer or Headrig operator to ensure there are no defects or abnormalities in the wooden log. The carriage upon which the wooden log is clamped returns to its original position and the other slabs are removed. This cut is usually discarded and ground into mulch to be used in the production of paper. A slab consists of the wooden log's outer surface, which has the original tree trunk's curvature. The first cut that is usually made to these logs removes a section called a slab. It is located at the end of the rails, upon which the wooden logs are mounted. The machine that does these complicated cuts is called a Headrig saw. A computer scans the wooden logs to determine any abnormalities or visible defects and then selects a cutting pattern that will yield the most pieces of lumber from the wooden log. This is done by placing the logs on a moveable carriage that slides lengthwise on a set of rails. SawingĪt the sawmill, the logs are cut into boards, dimensions, and timbers. Water is sprayed on the beds of the trucks to prevent the wooden logs from drying out during transport. Some felling sites have heavy machinery that de branch the logs before they are loaded on the transport trucks' bed, while other de branch the wooden logs when they arrive at the sawmill. Once the trees are felled, they are loaded on transport trucks and transported to a sawmill. Depending on the wood species being felled and the area in which the wood is being harvested, this is done with chainsaws. The process starts with the selected trees being felled. Lastly, pieces of lumber with a thickness of 5 inches and higher are classified as timbers. In comparison, those sections that are between 2 – 5 inches are considered dimensions. A portion of lumber that consists of a thickness of fewer than 2 inches is called boards. Pieces of lumber are usually cut lengthwise from the trunks of trees in rectangular squared sections. Lumber is a generic term used to describe various lengths of wood used for construction or building materials. In order to understand why wood warps and moves, it is essential to comprehend how lumber is harvested, cut, and treated. Below, we will discuss how the wood you use is manufactured, wood movement fundamentals, wood care, how to fix warps, and which woods warp the least. For this reason, research and knowledge about the wood that you plan to use and how it is harvested are critical. However, there is no guarantee treating wood with a wood sealer will prevent it from warping or expanding.Īlthough stopping wood from warping, shrinking, or expanding is impossible, you are able to manage it with the proper care and maintenance from time to time. Sealing both ends of the wooden plank may help prevent the ends from expanding or shrinking faster and exacerbating the warping of the plank. Sealing wood will not prevent it from warping or expanding. With modern technology advancing at breakneck speed, one has to wonder Does sealing wood prevent warping and expansion? This can be disastrous if not handled correctly and can cost you a pretty penny and a lot of time to fix. Since the dawn of woodworking, carpenters, builders, and woodworking enthusiasts have had to deal with wood warping, expanding, or shrinking.
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