Hi..........I realise a little off topic......
...but who remembers 1964 High School woodwork? .......when I had to pay sixpence to catch the bus to school
We used animal glue....[yes ground up horses hooves]...this extract from Wikipedia
is interesting........but more interestingly was that it appeared to be indestructible....
Derek
An animal glue is an adhesive that is created by prolonged boiling of animal connective tissue.
These protein colloid glues are formed through hydrolysis of the collagen from skins, bones, tendons, and other tissues, similar to gelatin. The word "collagen" itself derives from Greek kolla, glue. These proteins form a molecular bond with the glued object.
Stereotypically, the animal in question is a horse, and horses that are put down are often said to have been sent to the "glue factory".Contents [hide]
1 Types and uses
1.1 Hide glue
1.1.1 Production
1.1.2 Properties
1.2 Hoof glue
1.3 Rabbit-skin glue
2 History
3 See also
4 Notes
5 References
[edit] Types and uses
Animal glue was the most common woodworking glue for thousands of years until the advent of synthetic glues such as polyvinyl acetate (PVA) and other resin glues in the 20th century. Today it is used primarily in specialty applications such as lutherie, pipe organ building, and antique restoration. Glass artists take advantage of hide glue's ability to bond with glass, applying hide glue to glass. As the glue hardens it shrinks, chipping the glass