Fusor1 - The first demo fusor
This was the first time I made a plasma. A laughable setup but nonetheless one that could very reliably generate an air plasma. I documented this demo fusor as opposed to all of the later iterations because this one is more significant than the others from an experience perspective. Essentially, this was the first time I had ever played with plasma!
Vacuum: 500mTorr achieved with a single stage HVAC pump
Electrical: ~2kV @ 500mA supplied by a Microwave Oven Transformer (MOT)
Grids: Copper wire - 12 gauge from Lowes or Home Depot
Chamber: Glass Mason Jar
Total cost: About $150 as the pump was bought brand new from harbor freight, and the MOT was salvaged