If you have a personal cryogenics lab and a team of scientists to call on, this may be of interest.
While scrolling through emails that I missed answering or even reading while in the midst of moving months ago, I found a link to a video regarding a proposed mercury-based anti-gravity system. I’ve seen a lot of weird-science videos; this one seems to be a cut above the rest — it gives a lot of clues even if the guy apparently hasn’t built a ship himself. It’s definitely for the serious experimenter who knows what he or she is handling. A briefer probably earlier version of the video is here. Thanks for the links, Mike H. Even if the material is over my head so to speak.