You're welcome. It's a journey and it's with low tech supplies. A lot of the websites have materials worth a great deal more, playing with more voltage and amperage...and with variable bells and whistles (!)
It would be cool to see what others experience with the their tests. I'm hoping to perfect this so I can use it in my Custom Sonic Build. If I can get this to work, it'll make a great way to have a pattern on the sonic handle and help tie-in the elements of design I'm putting together. I'm also looking to have some precision holes drilled into the tube, so etching their placement will help that process too :cool
uhnmm I'm almost tempted to investigate me too, another mess to get involved. :facepalm If I get something I'll let you know.