No, glue is not made out of horse urine. However, there is a common misconception that glue is made from horse pee because historically, some types of glue were made from animal collagen, and horse hooves and other parts of animals were used in the production of certain adhesives. But this is a different process, and it has nothing to do with urine.
Historical Glue Production:
In the past, particularly in the 18th and 19th centuries, animal-based glues were made by boiling animal parts, such as hooves, bones, and connective tissue (which contains collagen) to extract a sticky substance. This process is called hide glue or gelatin glue, and it was used in woodworking, bookbinding, and other applications.
- Collagen from animal tissues, such as hooves, hides, or bones, was the key ingredient, and it was processed into a gel-like substance, which could be used as an adhesive.
- Horse hooves were one of the sources for this collagen-based glue, but urine was never a part of the process.
Modern Glue Production:
Today, most glues are made from synthetic chemicals, such as polyvinyl acetate (PVA) in white glue or cyanoacrylate in super glue. These synthetic adhesives are far more common and versatile than the animal-based glues of the past. Some craft and specialty glues still use gelatin, but again, this is derived from collagen, not urine.
So, in conclusion:
While animal-based glue was historically made using parts of animals like hooves and bones, glue is not made from horse urine. The connection between glue and animals is related to the collagen extracted from their tissues, not from urine. Modern glues are typically synthetic, and animal products are no longer commonly used in most types of adhesives.