Some projects never get finished because life gets in the way. If our lives depended on these machines, we probably wouldn't be building them nights and weekends.
That doesn't mean that there isn't a lot to be learned. It's valuable to document them from the beginning to benefit from the thinking that has gone into it. Both the good and the bad.
Zach, we're enjoying your process. Keep the discussion flowing. Everyone else should be honest and constructive with your comments and criticism. If you don't want to read it or you think there needs to be a deadline associated with it - move on.
Steve - Is a DIY machine every really "done"?