Once the dough has rested, it's time to roll it out and cut it into noodles. Start by dividing the dough into four equal portions. Take one portion and cover the remaining portions to prevent them from drying out.
On a lightly floured surface, use a rolling pin to flatten the dough into a thin rectangle, about 1/8 inch thick. To prevent the dough from sticking, periodically dust it with a small amount of flour as you roll.
Once you have a thin rectangle, fold it into thirds, similar to folding a letter. Then, use a sharp knife to cut the folded dough into thin strips. The width of the strips will determine the thickness of your noodles, so adjust it to your preference. For thin noodles, cut the strips about 1/8 inch wide, and for wider noodles, cut them about 1/4 inch wide.
Unfold the cut strips to reveal the individual noodles. At this point, you can either leave the noodles as they are or gently toss them in a little flour to prevent sticking. Repeat the rolling, folding, and cutting process with the remaining portions of dough until all the noodles are cut.