Truth be told, I actually did make the pasta one other time about a week ago, but didn't serve it with local toppings and other foods, so it didn't count as a Dark Days meal. It did serve as good practice and this time around I had a better handle on what to expect and what I was going to get.
After letting it rest an hour, I passed it through the machine two times at each thickness setting (folding it in threes in between each pass to keep the edges straight - thanks for the tip, Aunt JoAnne!), and then once through the cutting blades and voila! Polish Fettucini!