Electrolytic polishing apparatus

Electrolytic polishing apparatus comprising:

• an upwardly open container for receiving a quantity of electrolyte for use in the electrolytic polishing operation, said container having a bottom with a central opening, a cover for said container, said cover having a polishing opening against which a polishing sample can be pressed, a magnetic stirrer being provided in said container above said central opening, said stirrer being rotatable by magnetic means outside said container to set said quantity of electrolyte in rapidly rotating movement to create a flow of electrolyte along the surface of a sample pressed against said polishing opening and at the same time to produce a pressure gradient from said central opening towards the inner wall of said container, said container being placed in an outer bowl for receiving electrolyte escaping at the top of said container during the polishing operation, the upper face of said cover being located at a higher level than the upper edge of said outer bowl.