Tree resin you can get ahld of on accident, light a green piece of wood on fire, you get glue. Animal products can turn to glue with again just leaving it in a fire a long time or a hot enough fire. Humans have been making stone tools a lot longer than Homo Sapiens have been around.
Comment on Glue used to be rare and magical.
rainrain@sh.itjust.works 6 days agoLike what? Spit? Poop? Semen?
Snowclone@lemmy.world 6 days ago
nesc@lemmy.cafe 6 days ago
Like gelatin, casein, starch, horn glues? They are old as dirt.