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Hoof glue

Hoof glue is an adhesive made by boiling down the hooves of ungulates. It is a partially hydrolyzed keratin. It is a kind of animal glue.



Hoof glue was widely used throughout human history. The oldest known bow is 9780 years old and made using hoof glue. Hoof glues have been used for things like stiffening bow strings, adhering fabric to wood, stiffening fabric, creating thin lacquers to protect valuable objects

  1. REDIRECT Template:Harvard citation,[1] as well as sealing glass into frames, and sealing ceramic containers to name just a few. Hoof glue is still used today in cabinetry and other fine woodworking projects where the joints must be extremely fine if not invisible.


The general process is to take the hooves of ungulates and break them into small chunks and then boil them in water until all the hoof material has been liquefied. An acid is then added to create a thick gel. The resultant product is then cooled and allowed to harden.


The storable form of hoof glue is a hard block of resin-like material. To use it one would break off a suitably sized chunk and mix it with hot water and allow it to melt. Once melted it can be simmered to reduce to the appropriate thickness and then applied to the object in question. Very thin glue can be used as a resin coating to stiffen and strengthen cordage, such as bow strings or chair backs and seats. Hoof glue is not waterproof. Hoof glue does not become brittle when dry, it retains some flexibility, thus making it ideal for applications where some give in the joint or covering is required.


  1. Feugere, Michel (1993). "Arms of the Romans" (pdf). Translation Summary. Errance. http://hal.archives-ouvertes.fr/docs/00/05/24/19/PDF/Feugere_2002_%5B377%5D_text.pdf. Retrieved 2007-08-22. 


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