| 摘要 |
An elongated wood member such as a handrail comprising an elongated first layer of a high grade wood product and an elongated second layer of a lower grade wood product disposed horizontally relative to each other and secured together to form an inner core; and an outer layer of a high grade wood product disposed substantially around all of said inner core except for a bottom surface of the first layer. The first layer and outer layer preferably are manufactured from the same wood product, that product preferably being oak or maple solid timber strips or boards. The second layer preferably is manufactured from a lower grade solid timber strips or boards of the same wood species. The first layer preferably is between ¼ inch and 1 inch thick so as to provide a solid stable surface for the attachment of components such as balusters or posts. The elongated wood member may further include a third layer of lower grade wood product adhesively connected to the first and second layers and again disposed in a horizontal orientation. The horizontal orientation of the first, second and third layers helps the elongated wood member resist the tendency to warp along the longitudinal axis thereof over time.
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