Electrical discharge machining is based on the conversion of the electrical energy in thermal energy able to develop processes of material removal from the workpiece. In the case of small diameter holes, their obtaining by electrical discharge machining is more difficult yet, due to the difficult access of the dielectric fluid in the work gap. A systemic analysis of the small diameter holes drilling by electrical discharge machining was proposed. In order to obtain the small diameter tool

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... odes, the use of a plate having small diameter holes was proposed to be used as a secondary tool electrode.