Initial Tool Orientation Set-up for 5-Axis Flank Milling Based on Faceted Models Gandjar Kiswanto, Ario Sunar Baskoro and Eko Arif Syaefudin MATEC Web Conf., 108 (2017) 04006 Published online: 31 May 2017 DOI: 10.1051/matecconf/201710804006