Locking tongue and groove joint for wood floor boards has a locking groove cut into the flanks of the prepared edge groove by a plane with a cutting projection to give the correct position

摘要

To form the groove, for a locked tongue and groove joint between wood boards, the groove is initially shaped by milling. At least one additional locking groove (16) is cut by planing at the inner flanks (14), within the cut groove (12). The plane (18) has a plate which fits within the groove, and has a projection (22) with a cutting edge to cut the locking groove.