Instructable DIY Sealed Plasma Tube details how to create a plasma tube using a large kombucha bottle from the Synergy brand.
The bottle’s original spout is removed with a hot wire and sealed with a glass cap, before electrodes are installed in each end by drilling into the glass and installing small bolts, sealed with epoxy.
A flyback transformer supplies high voltage to create long purple arcs flowing freely through the bottle once it is filled with plasma.
While the project is primarily for educational purposes, it can also serve as a conversation starter.
It could also lead to investigating the drink itself, with kombucha having numerous claimed health benefits.
