I have done one quilt to cover the bottom of my bed. I had to use the older stuff with black lines, and the newer stuff with gold lines so that I had enough. The older stuff with the black lines left 'smut' all over my beautiful sewing machine(thank goodness for goo-gone!), but the gold was no problem. I found that washing your fabric when using this product makes it much easier to keep the fabric pieces attached until the end. Would I do it again with 1" squares? No, I might try again with bigger squares, but never again with 1' squares. My eyes are too old for that craziness!