moon·light unˌlaɪt/ Pronunciation Key - Show Spelled Pronunciation[moon-lahyt] noun, adjective, verb, -light·ed, -light·ing.
5. to work at an additional job after one's regular, full-time employment, as at night.
You have to get paid for it to be moonlighting. I'm not, so it's not moonlighting.
I've been working on building hybrid rocket motors in my garage for about two years. Having made some small measure of progress and lacking any eminent prospects for starting a rocket business, I thought I would share some of my lessons with the community. I hope that what I can share may be of some small help to others.
To start, here is a picture of my first motor.