Graphite has the following superior properties that copper cannot match:

1. Processing speed: high-speed milling is 3 times faster than copper for roughing; high-speed milling is 5 times faster than copper for finishing

2. Good machinability, can realize complex geometric modeling

3. Light weight, the density is less than 1/4 of copper, the electrode is easy to clamp

4. The number of single electrodes can be reduced because it can be bundled into a combination electrode

5. Good thermal stability, no deformation and no processing burrs