Yes, I have seen Sirhoax'es videos. The problem with his plates is heat, because he uses whole 12v between pates. His plates are arranged in P,N,P,N,P ect. arrangement. My design has also neutral plates inside, will see what that does

But I like the idea of Sirhoax about using bronze wool in the flashback arrestor, many people seem to get great results with such a system
I don't think it is wise to use vinegar as the electrolyte in a plexy glass electrolyzer since acids like to destroy the plexiglass material at its weakest points.
This is how the cover of my joecell looked like when I tried vinegar as an electrolyte. That's why I made the top plate from polycarbonate. I think I will use baking soda or KOH as the electrolyte in my electrolyzer.
Speaking about aluminum. Yes, you can use this material for the plates, but I would not recommend this, because it may produce a lot of gas very quickly, but the plates also are being slowly "eaten up". I made some experriments with aluminum plates, after a longer use they become useless
Thanks,
Jetijs