Originally Posted by Prism99
These look interesting, so I read some reviews on Amazon. What I'm wondering is whether or not the chemicals in the ink remain on the fabric. Reviews said the ink disappears when exposed to heat, but reappears when it becomes cold. This makes it great for kids' "secret messages", but maybe not so great for marking a quilt?
I haven't had a problem with anything reappearing. I quilt in the basement and it stays chilly until I run the fireplace.