Take a piece of rectangular fabric A-B-C-D .On the wrong side mark a true bias line X-Y. Draw parallel lines to this line at equal intervals. Keep the distance between the lines equal to the width of the bias strip needed. Mark a point P on the first line ¼ “ away from the corner point X. Mark another point Q on the second line , on the opposite side ¼” from the edge A-D.
Right sides together fold the fabric lengthwise. Take threaded needle pass the needle at the point P and then through the point Q. (see Figure 2)
Tack the edges together with ¼” seam along black line. (Refer figure 1) See how a continuous line has formed! (Refer Figure 3)
Machine stitch. Secure the stitching by stitching once again on the first stitch. Press the seam open. (Refer Figure 4)
Start cutting from the part of the line 1 as shown in the figure 5.
Continue cutting round and round on the marked lines. You will get continuous bias strip (Figure 6)