Rehbinder Effect

[Tesorodeoro]

Have modern knappers experimented with using water when knapping?

Seems like the videos I’ve seen are folks knapping dry.

 

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[newnan man]

Not sure what you are asking.

 

[ToddsPoint]

Ages ago ignorant people thought Indians made arrowheads by dripping hot water on flint to chip it. 😅 I’ve knapped flint for 40 yrs and have never seen anyone use water for any aspect of knapping. When you find flint nodules in a creek, they chip better before they dry out. Indians and also modern knappers keep early stage bifaces buried in the ground so they retain the moisture. The moisture fills the spaces between the crystals and it chips better than when it’s dried out.

 

[Tesorodeoro]

I’ve watched videos of folks driving a nail through a coffee cup submerged in water and cutting glass underwater and was curious if anyone had experimented to see how the Rehbinder Effect altered the flaking of obsidian glass.

 

[Tesorodeoro]

It apparently affects the hardness and ductility of glass in a way that can be demonstrated. Although I’ve not seen anyone test to see how knapping with the obsidian submerged would be any different that in the dry.

Just me wondering