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Wood drying (also seasoning lumber or wood seasoning) reduces the moisture content of wood before its use. When the drying is done in a kiln, the product is known as kiln-dried timber or lumber, whereas air drying is the more traditional method. There are two main reasons for drying wood: Woodworking
A go-devil loaded with hardwood logs. The go-devil was a simple one-horse sled used for hauling trees in logging. Ralph C. Bryant describes it in his pioneering textbook Logging (1913) as follows: [1]
The once-ubiquitous rusty, steel conical sawdust burners have for the most part vanished, as the sawdust and other mill waste is now processed into particleboard and related products, or used to heat wood-drying kilns. Co-generation facilities will produce power for the operation and may also feed superfluous energy onto the grid.
Barked or debarked green or dry logs are fed into such a machine one after other. Logs are milled into shape which, depending on style, results in cylindrical or square beams [ 1 ] . These different profiles are customizable depending on construction method : Swedish cope, Tongue&groove, D-log, bevel-edged, etc.
A steel mold that is placed on the back of the wood while heat bending can help ensure that all the bends and curves are done to the requirements of the project being made. After heat bending the wood, clamping the wood into a solid mold will reinforce the bends made to the wood while drying, preventing the wood from straightening while it dries.
A traditional oast at Frittenden, Kent. An oast, oast house (or oasthouse) or hop kiln is a building designed for kilning (drying) hops as part of the brewing process. Oast houses can be found in most hop-growing (and former hop-growing) areas, and are often good examples of agricultural vernacular architecture.
Some species of wood are better assembled green because wood splits less when nailed green. Other species shrink excessively, leaving voids between the individual pieces when allowed to dry. Often wood to be used for fine products, such as furniture, is kiln dried to stabilize it and minimise the shrinkage of the finished product.
A yarder is piece of logging equipment that uses a system of cables to pull or fly logs from the stump to a collection point. [1] It generally consists of an engine, drums, and spar, but has a range of configurations and variations, such as the swing yarder.