A luthier is a person who repairs guitars, violins, violas, cellos, double basses, and other wooden stringed instruments. These instruments need regular adjustments and minor repairs, especially straightening the bridge. As well, sometimes instruments are damaged in accidents, and a luthier has to use wood glue, broken pieces, and clamps to repair the instrument. Luthiers also have the ability to create wooden stringed instruments, mostly classic string family instruments.