Why use EDM broken tap remover to take out broken tap removers?

EDM is actually a reliable method to take the broken tap out of a whole. As VIGOROUS pulse EDM portable broken tap remover can burn out the central part of the broken tap and leave the cutting edges stuck in the threads of the hole. In this situation, it is easy for you to take the remaining parts out without any damage to the workpiece.

VIGOROUS EDM machines are specially designed to remove broken taps. It is a portable broken tap remover. 

VG-206 Broken Tap Remover