I loved this thread... I, too, had concerns as to marking a quilt for "quilting". A very dear and a quilter since I think she was 2 yrs old had told me to use the disppearing ink pen. WEll I did pick up a blue one and proceeded happily along and drew out the entire pattern over the entire quilt top. The next day all I had to was set it on the machine and go for it. I have to tell you from personal experience that in doing that, by the next morning everything had already disappeared. DUH... but a learning experience is always a good experience as a bad experience is one that you will never made again. Still giggling over that wonderful job I had done.. undone.