VIRTOOL – Virtual Reality for Machine – Tool Training Aritz Ustarroz, Alberto Lozano, Luis Matey, Jens Siemon, Diana Klockmann and Miren Iosune Berasategi Mécanique & Industries, 5 2 (2004) 207-212 Published online: 29 April 2004 DOI: 10.1051/meca:2004022