A strong, liquid, protein-based adhesive made from collagen in bones, sinew, and cartilage. Bone glues are considered inferior to skin and parchment glues. They are often sold in granular form instead of sheets. Bone glues are used as carton and box adhesives. Historically, bone glue was used by cabinet makers until the 20th Century and is still used in restoration projects. The bond can be dissolved by applying heat, even after many years, which makes furniture easier to repair.
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How to use Bone glue (Article)