Electrolytic polishing is use to polish objects that are polished by sandblaster. It is also a machine for polishing work pieces that are made of special materials.  The two cylindrical electrolytic baths can work at the same time to improve its efficiency, and it can polish objects from all directions. The electrolytic baths are its cathode, and the anode is the clip which is used to hang casting. The timer controls the duration of electrolytic polishing, and the current can be controlled during the polishing process.