another vintage HV device finding challenge: LARGE plasma balls!

Nov 24, 2019 3 Replies

Ok, my previous post concerned the outlandish prices for some neat looking HV devices originally from the late 90's: Luminglas discs. I was successful finding several, and at good prices comparable to what I would have paid in 2000 for some nice used ones. However.....



I have been on a new quest to try and find a large plasma ball. True, they are all over the Internet, but the most common sizes seem to be 8" diameter or less and I am looking for 12" diameter or more! However, the price seems to increase maybe as much as 20 fold going from 8 to 12 inch size! I see some on eBay in 12" size for just under $200, but I'm hoping to do better. Problem with the used ones I see is that the sellers don't specify globe size and 99% most definitely are 8" or less diameter.


Suggestions would be welcome. One thing I tried googling for was some sort of a history on plasma globes with maybe larger ones from the past mentioned. Other than Spencer's 12" Megavolt, that's all I could come up with (and, incidentally, the person wants more for the Megavolt than a new 12" one!).



Thank you.


The very large type you see in science museums and such are probably custom jobs I don't think there's enough demand for globes of larger size to make an industry of selling anything but one-offs.

I'd perhaps talk to someone on the facility of a place like which has one, might be able to at least find parts or who made theirs. I'd be prepared to pay a few G at least for a two-foot diameter one or such....

bitrex wrote in news:vxDCF.189371$ snipped-for-privacy@fx47.iad:

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