Steel Wire Exciter
This exciter build was inspired by Slider. The coil design was inspired by a very old Tesla patent drawing. The main coil is dollar store steel garden twist tie wire. The large diameter primary coil is aluminum floral wire. The circuit is a simple Slayer Exciter type. This is running on one 1.5v AA battery at about 35 mA.
Here is Slider’s video that inspired me to build this: