Fun fact I have discoverd while quilting this quilt. I am using two different types of thred, about 30 to 40 lines of green, then about 4 - 9 lines of yellow. Gutterman 100% cotton will sew about 9 lines before the bobbin needs changing. Aurifil 40 weight cotton thread will do about 39 lines before the bobbin runs out! There you go!