Several experiments burning fractal Lichtenberg figures into wood using high voltage electricity. I use several different solutions as conductors and various types of wood and was very pleased with the results.
The transformer I used produces voltages and currents sufficient to kill someone. Follow safety procedures carefully or a fatal accident may happen. At a minimum, do the following:
1. Never work alone. Always have someone watching that can get help if you get shocked.
2. Always wear insulated footwear and gloves.
3. Always check and then double check that the transformer is disconnected before touching a lead. Do not trust switches. It’s too easy to forget to turn one off. Always disconnect the transformer by unplugging it.
4. Most important of all: Always, ALWAYS, use only one hand when touching a lead. Even if you know the transformer is unplugged still follow this rule. Your other hand should be carefully tucked behind your back. If a mistake is made and only one hand is touching a hot wire, that hand may be burned but the current is less likely to travel through your heart, which it could easily do if you grabbed a lead in each hand.
High Voltage Electric Fractal Wood Burning