Pine Tar/Resin Glue

Carbon is well recognized as a high-performance additive to resins and glues, something our hunter-gatherer ancestors knew well. Until as late as the 7th Century AD the glues that held civilizations together were Birch and Pine Tar. In fact, the trade in Birch and Pine Tar was a central part of the Roman Empires near global trade circuits. Pine Pitch manufactured in the Pyranese was sought across the empire to fix broken things and glue the tips onto archers' arrows, and these are the things we know about. Think of it as the 1st hot glue

The size of the carbon (charcoal) powder makes a difference in the quality of the glue. the finer the charcoal the better the bond. It's easier to grind charcoal made from reeds than that from hardwoods. The quality of the wood or other material carbonised likely makes a difference too. 

The video is here: Making Pine Tar Glue

Beware, as I work with the glue and the melting tar/resin I warn you it is hot and then handle it. This is after decades of handling things that are hot. Dont take risks and get burned. dipping your fingers in water is a good way to reduce the risk of burning when handling hot things like this.

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