I use dissapearing Ink, you can get it your LQS or Joann's. It comes in 2 diff. types. 1 is water soluable and the is air soluable. The water sol. stays on until it is mixed with water, ie. damp rag or washer, the other 1 dissapeard in 2 couple days as it sits. You can also use chalk, there are different types of these, personaly I don't like the chalk but my mother does. What ever you choose Happy Quilting.