Well, I've got one built.
I really don't know how this picture thing works but I guess they're on here. For the generator I used 1/4 inch fittings, 1/4 inch Plexiglas and for orings I found some seals at NAPA that had a groove in the center of the seal so what you're seeing is a washer then a washer with a seal surrounding it with the washer in the groove then a washer, etc. There are 11 washers five of which have seals around them and one oring on each end washer that seals the hole in the washer and the Plexiglas's ends. The thickness of the rubber that is separating the washers was .05 before tightening. I know it compressed quite a bit but I can't tell you exactly how thick it is now. I doubt that it is .010 but I'd bet less than half of the .05 I started with. I used two ss straps for connections on the ends so you have +nnnnnnnnn-. This was fairly easy to build once you figure out what you're doing.
I did run this for a little bit but ran out of light(my testing lab is the back of my pickup so when the sun goes down the testing is done) so don't read too much into my testing.
I hooked the generator into the sight gauge of a bubbler so it would suck water in the bottom and the bubbles would force it out the top. For this generator to work it has to behave like a little pump I think. If it didn't it would run out of electrolyte and you'd be done. I really don't think one of these can work very well because of this. If you think about it the hydrogen has to escape and the electrolyte has to flow back into the gap in the washers through the same hole and actually through the small gap surrounding the hole. If you submerge a tero cell the bubbles flow out the top creating a vacuum for the electrolyte to flow in the bottom creating a upward current. This generator can't do that.
For testing I used six packs of koolaid in a little over 2 cups of water the first time. I couldn't get the amp gauge to hardly move and got very little production. I cleaned the koolaid out and tried pure vinegar. Same results. I was running out of light so I flushed the vinegar out as best I could in a hurry and filled it up with a little over 2 cups of water mixed with two or three tablespoons of koh. The amps came up to two or three amps and I started to get some bubbles going through the top tube. I added a teaspoon or two more koh and then something really weird happend. I lost all amps and all production. The gen completely quit working. I still have voltage and I have ohms. I don't have any idea what went wrong but like I said it's dark so I guess I'll take a look in the morning.
Charley