| 摘要 |
A compound lumber slab is formed from several pieces of lumber which are edge-glued together using finger joints. The fingers have the shape in cross section of truncated triangles. These fingers, and their mating grooves, are alternately disposed along the edges of the lumber so that a saw cutting a panel from the slab will cut through the flat top of a truncated triangle, thereby producing glue lines parallel to the panel edges on the resulting panel surfaces. The truncated triangles are shaped and dimensioned to optimize the structural integrity of the resulting panels. The mating fingers and grooves may have a noninterfering fit to produce closed glue lines on the finished panel surfaces.
|
