Method for drilling a hole in a part made of electroconductive material

A method for electrical discharge drilling of a hole in a part made of electroconductive material, the method using an electrical discharge machine comprising a head that can move relative to the part and carrying a consumable EDM electrode which is of elongated shape and is moved in translation along its elongation axis, the method comprising the steps of:

• a) advancing the EDM electrode towards the part for drilling a hole in the part,
• b) retracting the EDM electrode and removing the EDM electrode from the hole,
• wherein the method further comprises the following steps:
• c) laterally moving the head over a distance representing less than 100% of the diameter of the hole to be drilled,
• d) advancing the EDM electrode towards the part for scanning the part, and
• e) calculating the effective depth of the hole drilled in step a) from a difference in the measured sides in a direction parallel to said axis, between a first position of the EDM electrode at the end of step a), and a second position of the EDM electrode in step d) when scanning the part.