On a lightly floured surface, divide the dough into 4 pieces and shape into rectangles, covering with plastic wrap. Run
1 piece of dough through a pasta machine, lightly dusting with flour if it becomes too sticky. Continue running it though the machine, gradually narrowing the gap between the rollers, until setting 7. Lightly flour the dough.
Gently roll up the sheet of dough and cut crosswise at 1/8-inch (3 mm) intervals for spaghetti, 1/4-inch (1 cm) intervals for fettuccine, or 3/4-inch (2 cm) intervals for pappardelles. Unravel the pasta and set aside on a lightly floured baking sheet. Repeat with the remaining dough.
In a large pot of salted boiling water, cook the pasta for 2 minutes or until al dente.
Note from Ricardo
Durum wheat semolina can be found in many grocery stores or Italian markets.