Patent ID: 7299532

Claim:
A method for creating clearance holes in a part being worked having a first side and a second side which are either opposite or adjacent, comprising making a series of slots alternatively in succession and along an axis on said first side and said second side of the part, once on the first side and once on the second side of said part, in such a way so as to create a continuity between material removed in providing the slots on the first side and on the second side and, by removal of the material, the slots provide therein a clearance hole at a center of thickness of the part in which the slots are made, wherein said clearance hole allows for continuous passage of a stay bolt or cable, wherein the clearance hole has a length as required for said part, while depth of the slots is half of a thickness of the part being worked, plus a radius of the stay bolt or the cable, plus tolerance of respective materials, and varies in relation to the materials themselves.