Once I learned to use a glue stick, I never looked back ! Perfect matches every time. You just run a line of glue, nest them together, flip the top piece back estimating your 1/4"..if it's lined up, pinch it, if not, the glue lets you easily slide the pieces to get them right. When you're doing many of them, they dry before you get to your machine, if just a few, hit them with a dry iron before sewing. The glue looks unsightly on your blocks sometimes, but it always washes right out.