The one thing you haven't said is what your old job was. And you haven't mentioned what your income was or skill sets are, other than repairing trains. A lot of posters have suggested tradesman jobs for you, but I don't think you were looking for career ideas. I think you have enjoyed a respite from the corporate world, and I totally get that. The corporate world can be pretty dehumanizing.
I think your last post- that you will keep your hobby a hobby- is probably a good call. Turning a hobby into a job can take the pleasure out of it- the reason you started it in the first place.
Glad to hear you got your batteries recharged and some fresh perspective, though. Good luck with the new job search.