However, it is also very easy to roll these thin using a rolling pin. I show you both options here.
For the pasta machine, start out on the widest setting (which is usally 1) and then gradually get to 5. I wouldn't go any thinner than this as they may become too fragile after steaming.
Once the dough is the right thickness, use a 3-5/8" to 4" round cookie cutter and place on a lightly floured holding plate until all are completed and ready to press. As they sit, they may stick to the plate if you don't flour it.