Bone glue

Bone glue (also known as hot glue or cooking glue) is an adhesive made from bones. Bone glue is sold in granules that are dissolved in hot water. At around 45 degrees, the glue is thin and liquid and can be processed. The glue hardens quickly when cooled. Sometimes the bone glue is heated undiluted in a bain-marie. At 100 degrees, the bone glue is thin and easy to work with, and heating it in a bain-marie prevents it from reaching a higher temperature at which it would burn. Bone glue is used, among other things, in the construction and repair of musical instruments such as violins, pianos and church organs, and in the restoration of antique furniture. Adhesive strength: 150 bloom.