Tom--I'm having fun with this build!!! For one thing, I don't feel the pressure to go-go-go like I do when I am building an engine. As far as publishing drawings---I may at some point. I have to create the drawings anyways for myself, so it isn't a large leap to post them. I don't lay awake thinking of what to do next on this machine. I have a rather vague overall idea of it, and of course every time I watch another marble machine video on Youtube the plan in my head changes a little bit. With engines, you have to have the design complete BEFORE you start to build, or you can very easily paint yourself into a corner. With this thing, its largely "design as I go".---Brian