The noodles must be 1.6mm wide. 'How do you achieve such regularity?' I asked. 'Easy. Just place your knife at a 1.5° angle and it will push back the guiding board just enough so that the next noodle will be exactly 1.6mm'. Right. There is nothing to tell the chef when he reaches 1.5° so I guess the pupils must get their money's worth if they learn to do it right in 30 days!