Diamond files are the next fastest cutting tools available for removing EDM from ribs after disking. Diamond files can be used in profilers,

heavy-duty air profilers and by hand. One advantage is that the diamond’s hardness is ideal for cutting through EDM’s outer surface. Unfortunately, the cost of diamond files can be prohibitive – especially on larger jobs, which may require dozens of such files. Unwary polishers also have destroyed these files carelessly by pushing down on them too hard.

They think that pressure makes them cut faster when in reality they were simply breaking the diamond particles off of the file. By embedding the particles into the steel they were exceeding the limits of the braze that holds the diamond onto the file – resulting only in stripping the file clean and wasted time and money. The ultimate tool would be something that stays sharp forever and holds diamond without the particles breaking off.