EDM has always been considered suitable for precise but slow processes. Now, with the new AZZURRA HS series, CDM ROVELLA is ready to reverse this concept radically. Every process, whether it involves rough-shaping or finishing, is carried out in 20-70% less time than with traditional EDM machines. The electrode results have less wear as the exposure of the overheated electrode to the abrasive action of the debris is less too. Moreover, AZZURRA HS eliminates the phenomena of microimpact normally encountered in traditional machines, which contribute to the deterioration of the electrode. The high productivity of CDM AZZURRA HS induces to reconsider the use of the EDM, instead of other system removal, for an even higher ease and efficiency in the working. The use of CDM AZZURRA HS is very simple, as this technology keeps the work surface clean, eliminates gas and debris and so increases removal, even without an expert programming which takes into account the working depth and the size and shape of the electrode. This system does not limit the weight of the electrode and even with large surfaces, the finishing is performed with a homogeneous quality that cannot be achieved using traditional spark erosion machines needs.