how to make your own high voltage transformer?

To make your own high voltage transformer, start by gathering materials such as a ferrite core, insulated wire, and a suitable power source. Wind the primary coil with fewer turns of thicker wire and the secondary coil with more turns of thinner wire around the core. Ensure proper insulation between coils to prevent arcing. Connect the primary coil to the power source, and the secondary coil will produce high voltage. Always prioritize safety, as high voltage can be extremely dangerous.