Did you ever try Jenny's better way to make pinwheels? She says to take two squares, like two charms, or whatever size you want, then put them right sides facing each other, then sew a 1/4" seam all the way around the outside edge, then cut from corner to corner then corner to corner again. Open them up and you have a pinwheel! And they always match. It works, I've tried it. Jenny's vid is on youtube. Try it you'll like it. No more sewing on either side of the line, or hoping that you measured right. It just fits perfect! Hugs, Jan L