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The TNC 640 control is Heidenhain’s first milling control is offered with optional turning, enabling it to perform multi-operation machining. As with other TNC controls, the user is able to enter all the programming steps for turning operation in plain language, just as for milling. The machine is equipped with an optimized user interface, which gives the user greater transparency during programming, presents functions better and displays status information more clearly, according to the company. The TNC 640 also features a new stainless steel control design and a specially prepared keyboard surface and screen frame to eliminate fingerprints.