this is so incredibly impressive. I find projects and the people who do this so inspiring and also deflating because while I can appreciate the work ethic and polymath skills needed for this I couldn't recreate this. I'll just have to hang back and appreciate.
Any other similar creators with this level of polish (pun intended) and interests to follow?
I of course don't know your specific circumstances, but nonetheless I'd like to recommend you the author's own take on their work described in a rant titled "Spare Time and Hard Work".
It's available here: https://mitxela.com/rants (unfortunately It's not possible to link directly to it so you'll need to scroll a little bit down to find it)
I personally like coming back to it from time to time, since it's inspiring in it's own way for me.
If you're into the custom PCB design, I highly recommend Carl Bugeja: https://youtube.com/@carlbugeja He has lots of super interesting projects using micromagnetics, motors, flappers, and the like.
If you liked the part where he machined the housing, check out Clickspring. I think it's fair to say he is the greatest machinist currently active on YouTube, both in videography and storytelling, and in actual skill. https://youtube.com/@clickspring