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Recycling codes on products. Recycling codes are used to identify the materials out of which the item is made, to facilitate easier recycling process.The presence on an item of a recycling code, a chasing arrows logo, or a resin code, is not an automatic indicator that a material is recyclable; it is an explanation of what the item is made of.
Global Wood Density Database; National Hardwood and Lumber Association; American Hardwood Information Center; American Hardwood Export Council; Australian National Association of Forest Industries
The National Hardwood Lumber Association (NHLA) was founded on April 8, 1898 in Chicago, Illinois to establish uniformity of inspecting hardwood lumber.The NHLA is now a membership-based trade association that serves two main purposes: to stimulate economic activity and to provide a vehicle for the members to collectively strive for mutual benefit.
Ebony is a dense black/brown hardwood, coming from several species in the genus Diospyros, which also includes the persimmon tree. A few Diospyros species, such as macassar and mun ebony, are dense enough to sink in water. Ebony is finely textured and has a mirror finish when polished, making it valuable as an ornamental wood. [1]
Cheaper "hardwood" doors, for instance, now consist of a thin veneer bonded to a core of softwood, plywood or medium-density fibreboard (MDF). Hardwoods may be used in a variety of objects, but are most frequently seen in furniture or musical instruments because of their density which adds to durability, appearance, and performance.
Wood grain is the longitudinal arrangement of wood fibers [1] or the pattern resulting from such an arrangement. [2] R. Bruce Hoadley wrote that grain is a "confusingly versatile term" with numerous different uses, including the direction of the wood cells (e.g., straight grain, spiral grain), surface appearance or figure, growth-ring placement (e.g., vertical grain), plane of the cut (e.g ...
Assembly or marriage marks were used to identify the individual timbers. Assembly marks include numbering to identify the pieces of the frame. The numbering can be similar to Roman numerals except the number four is IIII and nine is VIIII. These marks are chiseled, cut with a race knife (a tool to cut lines and circles in wood), or saw cuts ...
The wood is either a light (white limba or korina) or with dark stripes (black limba) hardwood. It is used for making furniture, table tennis blades (as outer ply), and musical instruments and prized for its workability and excellent colour and finish.