3. Glue in Wood Work and Musical Instruments
Animal glue (made from boiling animal connective tissue and bones) is apparently the best adhesive for fixing musical instruments made from wood such as violins and pianos. Even though other synthetic glues are used too, hide glue is also readily available and widely used for furniture fixes and wood work: You can even catch a guide on how to use it online. If you’re OK with animal slaughter that is.