Abstract: A method for cutting steel includes heating a portion of the steel until it is molten, positioning a cutting torch to have a high angle of incidence relative to the molten steel, and blasting hgih pressure oxygen at the molten metal. The blast of high pressure oxygen further heats the molten metal and blows the molten metal away from the steel to create a cutting trench. The cutting torch is then moved generally parallel to the cutting method includes a cutting torch that emits a high pressure combustible gas and a high pressure combustion enhancing gas. The torch directs the high pressure gases at the steel so that the gases hit the steel at an acute angle of attack. An automated device propels the torch in the general direction of the desired cut. The resultant cut metal product has at least one edge with a grain pattern that is not perpendicular to the direction of cut.

Abstract: A part tracking system has a tester and a part tracking device. The part tracking device is an electronic device that identifies the part with a unique signal. The part tracking device has a power source or an inductor which is connected to a filter. The filter is connected to a signal generator that creates a signal and sends the signal to a testing unit to determine whether the correct signal was created by the part tracking device.

Abstract: A system for tracking aircraft parts, that has a tamperproof part tracking device affixed to an aircraft part connected to a transmitter attached that sends a signal corresponding to the part tracking device to a receiver that relays the signal to a data processing device. The data processing device is connected to a database populated with data of expected values of signals related to an aircraft part. The data processing device compare the expected value to the signal and produces an output signal that indicate whether the signal was within the tolerance of the expected value.