Ways to increase the production efficiency of hardwood blanks Serhiі Mazurchuk, Nataliya Marchenko, Yuriy Tsapko, Olga Bondarenko, Nataliya Buyskikh, Tomáš Andor and Viktor Forosz E3S Web Conf., 280 (2021) 07010 Published online: 30 June 2021 DOI: 10.1051/e3sconf/202128007010