how to make a homemade high voltage transformer?

To make a homemade high voltage transformer, you’ll need a core, primary and secondary windings of insulated copper wire, and a power source. Start by wrapping the primary winding around the core, then wrap the secondary winding with more turns to increase voltage. Ensure proper insulation between windings to prevent short circuits. Use a safe power source, and always prioritize safety, as high voltage can be extremely dangerous. Consider using an existing transformer for guidance.