A real experiencie of tridimentional drawing (+) 1. - Introduction 1.1. - Problem and idea 1.2. – Analog and Digital 1.3. - Ergonomics 2. - Research 2.1. - Hardware 2.2. – Software 2.3. – Design and Ergonomics 3. - Developing 3.1. - First Loop 3.2. – Second ...