I may have most of the parts to build this.
Have the following: vaiac and neon transformer.
May have hv rectifier diodes. I recall having a bag of hv diodes from Fred’s. Need to find and check.
I have some Varo hv rectifier sticks, but they are gross overkill for this.
Need hv cap. Recommend 25 - 30 Kv rating. Not sure what value to spec.
Someone will need to build a plexiglass box for the diode bridge, cap, and binding posts.
Recommend .5" bottom and ~.25" sides and top.
I’m a firm believer in overkill for something like this.
ELab used to have Fluke hv probe It went missing, as in stolen.
Guessing someone thought it was a cool looking toy and had to have it.
I may have a replacement.