I tried desperately to make a period-6 machine, which I still think is possible. I couldn't find a layout that didn't leave pieces stranded or lacking an element I needed. My timing arm requires the period to be a multiple of 6, so I was forced to go up to 12, which I am sure is not very good. I'll continue searching for a 6 or at least something better than 12 but I needed something to submit.