Draw parallel lines at a 45-degree angle (true bias) on a square fabric piece using your desired strip width (3 cm for example). and Cut along the marked lines to create individual bias strips with angled ends.
Place two strips right sides together at a 90-degree angle, aligning the diagonal ends. Pin the ends together, allowing small triangular points (“dog ears”) to extend beyond the edges.
Stitch a straight seam across, then press the seam allowance open. Trim the extending “dog ears” to get a smooth, continuous bias strip
Fold the raw long edges inward toward the center and pin them in place
Press the folded edges evenly along the strip.
Continue folding and pressing along the entire length to create the finished bias tape.
