I am currently making the Sew Fresh Quilts weekly blocks of Harry Potter and using all Kona. I found that if I spray the fabric prior to cutting with Terial Magic (a very stiff liquid stabilizer that washes out), the raveling is almost non-existent. Some of my pieces are as small as a 1" sq. unfinished & everything fits together perfectly. The fabric is almost as stiff as cardboard. I did find that the spray may leave a mottled look depending on the density of the spray, but should wash out.