Finger joint in timber e.g. laminated timber, plywood, chip-board has finger portions cut into complementary finger shapes, such that height of at least one complementary finger portion changes depending on length of finger pair

摘要

At least one finger portions (1,2) are cut into complementary finger shapes by e.g. milling curser, such that height of at least one complementary finger portion changes depending on the length of the finger pair in contact which each other. The finger has shorter joint ends than in the middle of the joint.