... to carve the mold. If we using normal copper for spark eletrode, copper eletrode will be consumed fastly, and veracity ... shift to much higher level. To reach high veracity in spark erosion, we strongly recomand our tungsten copper electrode. More formular ... supplied on request, such asW80Cu20, W90Cu10, Silver tungsten electrode, For any question, please be free to contact us. High thermal conductivity ...