Great post!
I've been a techie on the manufacturing side since 2016. I've built a number of different CNC machines including 3D printers, C02 laser cutters, and routers. (should see my workshop, lol)

There's a specific 3D model of a "vortex water nozzle", across the internet of 3D models that has been taken down due to a "patent breach", which naturally, makes me want to reproduce it anyway cause I'm a rebel like that. The cross-cut sections of the model are posted too, shouldn't be too difficult to design. Could this be on the right track?

You might already know but Autodesk Fusion360 is a free CAD and CAM software, that rivals even Solidworks, in my opinion.

Also for anyone trying to learn F360, tutorials by Lars Christensen on YouTube are great!

Talking about suppressed technologies, I've been meaning to find a time to ask if you know anything about the GEET reactor by I think it was Stanley Meyer and his dune buggy. (is it worth looking into and am I at risk of being killed off like he was? Kind of joking but then again kind of not cause that's some serious business)
I've built a 1969 VW dune buggy myself which is how I had come across Stanley's HHO gas theory.

Counting down the days til the next interview!