The method and the device are used to plasma-treat workpieces. Providing a bit body includes providing a green powder component having a first region having a first composition and a second region having a second, different composition, and at least partially sintering the green powder component. Additionally, the present invention includes response processes and structures to address high-voltage electrolysis. In order to take up less space during opening and closing of the door and to be able to operate the door with the least possible force, the door has a rotary sliding joint between the door leaf and the horizontal element. The transition points define the homogeneous segments.