Originally Posted by
eastslopequilter
Heat erasable pens were designed to disappear on paper. Our guild did an experiment and found the lines can come back when the quilt gets cold. I use air erasable pens and work fast.
It's interesting you say that, I use the heat erasables all the time and I've never had the lines come back, I even did my own experiment and tossed a piece of fabric I had marked up then ironed into the freezer, waited an hour and went back and the lines never reappeared.
I wonder if that's a brand thing, then, maybe?