Method for electrical discharge machining

A wire electrical discharge machining method (WEDM) for forming a desired pattern on a workpiece by a WEDM machine tool, in which a preliminary voltage pulse is applied to a gap between a wire electrode and the workpiece, and in which, at the breakdown of said preliminary voltage pulse, a first machining discharge pulse is applied to the wire electrode, comprising wherein

• a discharge position of said first machining discharge pulse along the engagement line of the wire electrode and the workpiece is determined in real time based on the voltage signals or current signals generated by said first machining discharge pulse,
• and that at least one additional machining discharge pulse is selectively applied directly after the first machining discharge pulse,
• in which said selective application of the additional machining discharge pulse is based on the determined discharge position and based on a digital pattern representing the desired pattern.