Tool electrode wear in electrical discharge of small diameter holes Laurenţiu Slătineanu, Oana Dodun, Iulia Carp, Margareta Coteaţă and Irina Beşliu MATEC Web Conf., 94 (2017) 03013 Published online: 04 January 2017 DOI: 10.1051/matecconf/20179403013