This paper presents a study conducted with nineteen students from the Technical University of Catalonia. The study examines user experience and acceptance of an Augmented Reality (AR) system as a visualization tool for Computer-Aided Design (CAD) classes. Although results showed that AR does not improve the learning of CAD techniques, students mentioned that they would find it useful and interesting to continue using AR in CAD lectures. They said that AR helps them to easily understand the forms and volumes of objects and better comprehend the location of objects in the space and its relations with others.