Mold or die maker will have narrow slits machining requirements. Die sinking EDM machine achieves it excellent with good roughness. Richkey RK-F series machine normally can up to Ra 0.1, which is the real mirror effect.
source
Mold or die maker will have narrow slits machining requirements. Die sinking EDM machine achieves it excellent with good roughness. Richkey RK-F series machine normally can up to Ra 0.1, which is the real mirror effect.
source