Material surface coating is one of the methods which wildly used in industrial sectors. That coats the surface with thin film through vacuum coating. Especially, physical vapor deposition technique (PVD) is used in this process. Is a hard coat layer (hard coating) hard coating in a thin film on the surface coating used in industrial cutting tools. The improved surface hardness of cutting tools for drilling. Extend lifespan This reduces production costs. It adds value to the cutting tool boring. This research article reports the adjustment of metal surface by using Plasma Nitride and high voltage direct. for study, design and construction of surface pretreatment plasma nitriding using high-voltage direct current. The specifications of the device to be used as equipment for research and development.