Wood-weld - completely without additives!

Yes, you read correctly! The wood is rubbed together under pressure:

It is a friction welding which in the wood already existing bonding agent uses, by which friction process activates under pressure unlocked and. The viscose rayon mass, which functions from the wood components lignin, cellulose and Hemicellulosen in an educated manner, as glue layer. The group is supported by the training by physical mechanisms such as Van that Waals forces and hydrogen bonds. The black which raus comes there when welding to see (in the video) are combustion residues by heat with rubbing to develop, therefore also the smoke.
The energy is clean-brought depends not only on the pressure, but also on the frequency, amplitude and the time.
The pressure per 1 cm ² amounts to 100 N, thus 10 kg.
With application in the video a surface is frictionwelded by 500 cm ², that is 50 kN or 5 tons Kraft.
The frequency amounts to approx. 120-150 cycles per second.