Advantages of EDM:
1. It can manufacture odd-shaped surfaces that cannot be produced by traditional cutting machines.
2. Machining hard materials can also have good tolerance accuracy.
3. The cutting force of traditional machining machines may damage small workpieces, but EDM does not.
Disadvantages of EDM:
1. Non-conductors cannot be processed (there is already technology to process ceramic materials).
2. The processing speed is slow.
3. The processing cost is high.