Abstract: The invention relates to a method for designing a tube frame out of a number of tube parts, the method comprising the steps of: providing a selection of predefined tube parts, each tube part having at least one attachment zone; selecting a first tube part from the selection of predefined tube parts; selecting an attachment zone of the selected tube part; selecting a second tube part from the selection of predefined tube parts for connection to the selected attachment zone and connecting said second tube part at the selected attachment zone to the first tube part; repeating the steps of selecting an attachment zone of a tube part and selecting a further tube part in order to design a tube frame.

Abstract: The invention relates to a method for computer controlled machining of tubes, in particular laser cutting tubes, the method comprising the steps of: providing a length of tube; arranging the provided tube in a computer controlled machining station; executing a program for controlling the machining station in order to machine the provided tube; and measuring the dimensions of the provided length of tube prior to arranging the tube in the computer controlled machining station.