Half-square Triangles – One of my favorite quilt tops is a windmill pattern using two fabric colorways. One day soon I plan to make a queen-sized quilt using white and blue. Until then, here is a tutorial on how to make Half-square Triangles and a 5 1/2″ windmill block. Select two coordinating fabrics and cut two 3 1/2″ squares from each. Lay them right sides together and use a ruler to mark a diagonal line. Sew a scant 1/4″ on either side of the diagonal line. Cut on the diagonal line. Make 2.Finger press the seam toward the darker color. Press with a steam iron being careful not to distort the bias edges of the block. Trim blocks to 3″ square. Sew two blocks, matching the right sides of a light and a dark fabric together, using a 1/4″ seam. Make 2.
Windmill block – Sew the two-block units together pinning where the points meet. Open the seam on the back side of the fabric and press to make a windmill block. Trim to 5 1/2″ square before sewing this block to another block in quilt construction.