How do you maintain the height of the platen during spinning? Basically my concern is if the platen is wobbling or randomly going up and down, it will damage the fiber. Thanks!

Our rotating platen (in which polishing film is placed on a glass disk/rubber pad) lies directly upon the polisher baseplate. Both consist of aluminum that is ground to a high level flatness tolerance. Additionally, a quality control run-out measurement inspection(i.e. up/down movement) is perform