Ugo Abundo, the Italian engineer and Pirelli High School instructor behind the Hydroton/Athanor open source cold fusion cell project has published a series of videos detailing the construction of the reactor. The model he is working with is now called the “Hydrobetatron”, and a Youtube channel has now been set up where the videos are published.
Unfortunately for English speakers like me, the videos are narrated only in Italian, but I hope over time we might find some translations of them available. The 22Passi.blogspot.com site has today published a set of photos of the reactor as well.
It is good to see Ing. Abundo continuing with this work — it will interesting to see how many people get involved with trying to replicate this reactor as time goes on.