Today at my LQS, I was told the above are fantastic to mark your tops for quilting. The LQS carries them but believe you could find them in any office supply store. You can mark you fabric, then either erase or what was suggested is to take a hot iron to the marking. I know, completely different than anything we've been told in the past. The iron removes the marking and it only comes back if the fabric is so cold it could freeze. I bought a couple but I'm a bit skeptical. Will fool around a little on some scrap.
Anyone else heard of or used these pens? Thanks.