Forestgnome
Stainless
- Joined
- Aug 2, 2008
- Location
- Californeeeah
I know this could be put in the EDM thread, but it's more of a general physics question. What purpose does the dielectric in EDM machining serve? The reason I ask is that EDM machining is always described as a spark erosion process, yet in my mind you shouldn't be able to get a spark to occur in a dielectric, especially at the voltage levels I see used in EDM.
