Both die-sinker and wire-cut EDM machines use sparks to remove electrically conductive material. But while both types are electrical discharge machines, there are differences in their use and operation. Some of these differences are listed in the following text.

Dielectric fluid:

1. die sinker EDM machines use hydrocarbon oil and submerse the workpiece and spark in the fluid; and

2. wire-cut EDM machines normally use deionized water and contain only the sparking area in the fluid. 

Similar, they are not identical. Operational data and charts, therefore, must be specific for the type of machine being used.