this is a used violin and case I know nothing about filing or cases I got this to paint the case to customize the case but I'm not going down that line in my business of personalizing music cases so putting up for sale the violin has been painted gold it doesn't feel particularly like a good quality one probably one just for students to practice with don't have test it don't know if it's broken don't know anything so selling it as spair and repair cases got marks and dense and scratches from being used