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The wood is hard and heavy, with noticeable differences between sapwood and heartwood. The heartwood turns a dark color with oxidation. The wood is very weatherproof. It is used in the construction of boats, docks, truck beds, beams, crosspieces, stairs, floors, as well as woodturning. Sawing produces a pale yellow sawdust containing lapachol.
Heartwood and sapwood in pinus sylvestris. The heartwood from the pine tree, heart pine, is preferred by woodworkers and builders over the sapwood, [1] due to its strength, hardness and golden red coloration. The longleaf pine, the favored tree for heart pine, nearly went extinct due to logging. Before the 18th century, in the United States ...
Only the heartwood and sapwood are useful for making pulp. Bark contains relatively few useful fibres and is removed and used as fuel to provide steam for use in the pulp mill. Most pulping processes require that the wood be chipped and screened to provide uniform sized chips. [citation needed]
A section of a yew branch showing 27 annual growth rings, pale sapwood, dark heartwood, and pith (center dark spot). The dark radial lines are small knots. Heartwood (or duramen [12]) is wood that as a result of a naturally occurring chemical transformation has become more resistant to decay. Heartwood formation is a genetically programmed ...
[26] [27] Bleaches are also occasionally used to reduce the difference in colour between lighter sapwood and heartwood and also colour variation within heartwood. [7] Such bleaching make it easier to achieve a uniformly coloured wood when the wood is subsequently coloured with pigmented stains and dyes [7] (see below). Furthermore, the natural ...
The heartwood changes color after being cut and can be polished to a lustrous, glassy finish. Being quite dense and sometimes having a relative density of over 1.0, it will sink in water. The sapwood (not often used) is a creamy yellow with a sharp boundary between it and the heartwood.
The wood is among the hardest and heaviest known. The heartwood is distinct from the sapwood and contains large quantities of lapachol. Handroanthus has the same lepidote scales as Tabebuia, but also has various types of hair. The calyx is 5-dentate and campanulate to cupular.
The heartwood is yellowish to golden-brown. Sapwood is whitish to pale yellowish brown. It can easily separate from heartwood. [citation needed] Teak darkens as it ages. There can be a large variation, depending on which region the teak is from. Old growth has much tighter rings than new growth. [10] There is a leather-like scent in newly cut ...