Method of making frames from tubular members and frames made by the method

A method of making a frame that includes first and second tubular members joined at a predetermined angle to each other solely by a bonded joint between a surface along a portion of a wall of the first member and at least a portion of an edge of the second member characterized by the steps of forming a slot in the wall of the first member at a position in register with a part of the edge of the second member at the joint so as to establish a predetermined position of the second member axially and rotationally relative to the first member, generating a cutting beam, providing relative movement between the cutting beam and the second member such that the cutting beam traverses a predetermined path over the wall of the second member such as to cut the edge to a shape such that it conforms to and abuts the wall portion of the first member and thereby establishes and maintains the predetermined angle between the members and also to form an integral tab along a part of the edge of the second member shaped and located to be received in close-fitting relation in the slot in the first member, fitting the second member to the first member with the tab of the second member received in the slot of the first member and the edge of the second member seated firmly against the wall surface of the first member, and forming a bond between the first and second members at the joint extending substantially coextensively with the abutting edge portion of the second member and the wall surface of the first member.