A bias strip is a fabric strip cut at a 45° angle to the grainline, providing stretch and flexibility for finishing curved edges. Instructions:
Place fabric flat and locate the grainline. Draw a 45° line (bias line) across the fabric using a square or protractor. Mark the desired strip width perpendicular to the bias line. Cut precisely along these marks for a straight bias strip. Join multiple bias strips diagonally to preserve stretch. Press the bias strip to prepare for binding or edging applications.