The endless wire can be fixed onto a 5-axis head, which is used to erode highly complex forms. Complex and technically challenging products can be produced during mass production using this process. Despite the high levels of complexity and the high training requirements, in regards to the manufacturing of tools, wire EDM machines
are more efficient than CNC milling machines
. This is particularly true as the erosion process is done contact-free. No wear and tear occurs on the processing tools, besides the cutting wire. Due to the contact-free process, the workability of the workpiece depends on its own material characteristics, particularly how hard it is.