In a wire-cut EDM process the necessary conditions that

In a wire-cut EDM process the necessary conditions that have to be met for making a successful cut are that

1. wire and sample are electrically nonconducting
2. wire and sample are electrically conducting
3. wire is electrically conducting and sample is electrically non-conducting
4. sample is electrically conducting and wire is electrically non-conducting

In EDM or wirecut EDM, the work and tool must be electrically conductive otherwise the current passage will not takes place.