Equipment
High voltage AC supply (NST)
Two self tapping Screws
Piece of wood (MDF is good)
Cloth and a bowl of water
Diagram
Method
Screw in the two screws around 100mm apart. Using the water and cloth dampen the wood between the screws. Attach the HV power supply to the screws. Turn on the power a Lichtenberg figure will slowly be burnt into the wood. If the burning stops, remove the power and re-dampen the wood.
Results
Extreme Electronics will not be held responsible for any electric shock, burn or injury. These experiments are done entirely at your own risk. Please read our safety instructions