I’ve been working on a compact water electrolysis demonstrator inspired by the small “arc reactor” look. The main goal right now is to get the mechanical design clean and modular before worrying about iron man details. So far, I modeled a clear cylindrical acrylic chamber with removable top and bottom caps, six outer tie rods for structure, and a removable internal cartridge holding a stack of stainless-steel disks on two conductive rods. I also added separate positive and negative terminals on the bottom, plus a dedicated fill/drain port and an atmospheric vent on the top. Next I’m planning to finish the terminal isolation details, make the upright display stand, before moving on to the decorative arc-reactor-style shell and lighting.