For centuries, Switzerland has been considered home to the greatest watchmakers in the world. Works of fine beauty and optimal precision have been the norm there seemingly forever.
This paper presents a new approach to repair industrial gears by showing a case study where pressure angle modification is also considered, differently from the past repairing procedures that dealt only with the modification of the profile shift
coefficient. A computer program has been developed to automatically determine the repair alternatives under two goals: minimize the stock removal or maximize gear tooth strength.