Well Kevmo, I’ve got most of the setup for one in my east garage. Seriously.
It’s a little different than those that I’ve read about. It uses nickel and hydrogen. Nickel also absorbs H2 into it’s lattice. The vessel it’s contained in is good for about 100 atmospheres. And I don’t use heat to start the process. I wish I had the time to drag it out and finish it, but I’m getting old...
I’ve heard of others using Nickel, like Focardi and Piantelli. It’s more difficult to get the process started, but the reaction is much more vigorous.
My view is that you need to have a precursor reaction using H1 gas rather than D2 or h2 gas. The first thing H1 gas tries to do is become H2 gas in an endothermic reaction which sets up a series of Bose Einstein Condensates crashing into each other in small fusion events.
Those small fusion events lead to the most common (by far) fusion events —proton-proton fusion, such as happens in our sun.