Place the 2 cups flour on a plate and create a well in the center. Add the eggs and egg yolk into the well. Using a fork break up the eggs and slowly start to mix the flour into the eggs a little at a time. When the mixture forms a rough dough, pour the dough out onto a lightly floured surface and kneed in rounded, folding motions to bring it together. Wrap tightly with plastic wrap.
Slice the ball into quarters, selecting one section to start with, and cover the remaining dough to keep the pieces from drying out. Dust the the section you've selected with flour and flatten slightly with the heel of your hand but not overly sticky (be generous with the flour). Using the pasta roller attachment on setting 1, feed one end of the pasta into the machine. This will begin to flatten it into a sheet. After each pass through the machine, fold the sheet in half and sprinkle both sides with generous amounts of flour, spreading it evenly across the dough until there aren't any sticky parts.
Continue feeding, folding, flouring, and putting it through the roller again until the sheet stretches to the width of the machine. Be patient, the more you fold it and put it through the roller dusted with flour, the smoother it will get! As soon as the pasta reaches the end-to-end width, change the setting of the attachment to 2. Repeat the folding, flouring and feeding process once through. Then do another pass on setting 3 (our preference). Lay this piece on the counter and repeat these steps with another slice of dough. The goal is to have two pieces to lay on top of one another!
Once the second piece of dough has been flattened, set them both on the counter beside one another.