Fulgurite Experiments

Dwight Perry is currently experimenting with two microwave oven transformers wired in parallel to produce fulgurites from a tank of sand. The aim is to produce simple forms in vitrified sand capable of becoming moulds for casting salt.

Video of the experiment

Ginger building sand.
First fulgurites made using double MOTs (Microwave Oven Transformer) wired in parallel for current doubling, no choke on mains side, and twin resonance capacitors on HV output.

Finer normal sand. 
Experimentation in turning the electrode in the sand and fusing two fulgurites together.

Modification in circuit, two MOTs run in series with 3 stage capacitor bank. approx  8kV output at 1Amp, Choke on mains side, Approx 5kW power consumption.

Experimentation in fusing fulgurites from the same root point keeping the plasma hot, also manipulation of molten fulgurite.

Experiment in multiple limbed object (8 legs, it may pass for an octopus)

A form in vitrified sand after the experiment

 

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