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Sunday, 1 January 2012

Kinds( Types ) of Hardwood Lumber


Birch

This is why hardwood is more often used for flooring, finished projects and paneling.

-Birch
Birch is a lightly colored hardwood that is a good substitute for the more expensive maple in terms of appearance. Birch features a closed grain and is resistant to swelling and shrinking. Birch is a good choice for making doors, cabinets and cupboards.

DESCRIPTION Birch has light yellow sapwood and reddish brown heartwood. Once stained, the color differences are less pronounced. It has straight, close grain and a fine, even texture.
Weight is about 44lbs per cu. ft.
COUNTRY OF ORIGIN North America
BOTANICAL NAME Betula Lutea
OTHER NAMES Betula Wood, Grey Birch, Silver Birch, Hard Birch, American Birch
MECHANICAL PROPERTIES High bending and crushing strength. Very good steam bending characteristics. High shock resistance.
WORKING PROPERTIES Works fairly easily with hand and power tools. Moderate dulling effect on cutters. Curly or disturbed grain wood requires reduced cutting angles. Glues well. Takes stain and polish extremely well.
DURABILITY Perishable and susceptible to attack by common furniture beetle. Heartwood is moderately resistant to preservative treatment. Sapwood is permeable.
SEASONING Dries slowly with little degradation. Large movement.
USES Furniture, high-grade joinery and flooring, upholstery frames, high-grade plywood, paneling, veneers.

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