Diagnostic System of Drill Condition in Laminated Chipboard Drilling Process Bartosz Swiderski, Jaroslaw Kurek, Stanislaw Osowski, Michal Kruk and Albina Jegorowa MATEC Web Conf., 125 (2017) 04002 Published online: 04 October 2017 DOI: 10.1051/matecconf/201712504002