This chapter explores the conflicts and disagreements that arose between astronomers and mechanics spanning from the mid-nineteenth to the early twentieth century. Through an examination of scientific and public controversies, it investigates the interplay between the upkeep of telescopes and precision instruments and the advancement of astronomical understanding. This text examines the significance of recognizing the contributions of technicians in scientific endeavors, particularly in astronomy, where disputes arise over instrument functionality. Instances such as the controversy surrounding the National Astronomical Observatory of Chile highlight tensions between astronomers and technicians, revealing the intricate dynamics of scientific practice and the crucial role of technical maintenance.