Find any brand of skin chewing bones for dogs. These are made of buffalo skin
Select as many bones as you need for the quantity of glue you plan to make (it always is a rough guess)
Put the bones directly in a pan, with a little cold water and let them rest...
Bones re-hydrate little by little and start to unfold themselves. These have been bathing for 4 hours
Close-up: sight can seem unpleasant, but the bones are not as smelly as one may think they are.
After a whole night spent in water, the skin ribbons are ready to be used.
Cut each ribbon of skin into thin lashes. Cissors work much better than cutters or knives.
The thinner the lashes, the quicker they will melt into hot water.
Cut the lashes into small pieces. The smaller they are, the better.
Some pieces are here too big, on purpose, so we can see the result
Put the pieces in a pan, with, this time very little water (too much water will take longer to evaporate)...
Gently heat the pan... The water MUST NOT boil. Double pan heating is the safest way.
After a few minutes, the skin pieces begin to disintegrate, liberating the collagenes. Wait untill they all "melt".
Proceeed with heating until most of the water evaporates and the mixtures thickens. Here it is after cooling: see how the biggest pieces didn't fully melt
USING THE GLUE
Once it has dried out, this glue can be stored in a cool place, but will have to be used rather quickly (within a few days) before it starts to... host life. It can be fully dehydrated and be then stored for much longer periods of time..
Rubbery and jelly-like once it has dried, this glue melts when heated and can be used several times.
To use it, simply:
- Heat a little skin glue
- Soak vegetal or sinew fibers in the hot glue
... and use it for your ligatures !