Always. Once I was trying a different thread that a friend loves. Nope. The quilt came out bumpier than bubble wrap. It was in my stack of quilts to give away and my sister in law chose it. I told her it was an experiment of a different method, so it created different results. She loved it. Only I know it was a total mistake. If it had been a flat quilt coming out that way, I am sure she would have thought it was ruined.