Wash and dry new cotton fabric to remove the sizing. Iron the laundered material if it has excessive wrinkles, which is often the case with 100 percent cottons.
Lay the cotton fabric flat on your work surface. Mark cutting lines 2 inches apart with a hem gauge and chalk.
Cut out the strips. Trim loose threads as necessary.
Stitch the strips end to end with diagonal seam allowances to strengthen them and avoid bulkiness. For fabrics other than cotton or cotton blends, your strips are now ready.
Fold 1/2 inch of each long edge of the strips toward the center. Press the creases as you go.
Fold the 1-inch strips in half and press the strips to crease them.