The Frixion pen is great but you must realize that you will never be able to remove the ink. Yes, it becomes totally transparent with ironing but if the quilt is exposed to cold, the lines will reappear. Yes, they are removeable again with an iron but "think of it" - any future owners of the quilt might not realize this. I recently learned this the hard way so made a special label and sewed it to the quilt advising that if the quilt gets cold, remove the markings with an iron. There is no and I mean NO stain remover that will remove Frixion ink!