Originally Posted by
Peckish
My point when I talk about why I don't use these pens is NOT that I'm going to be putting them in the freezer. It's that there is obviously some sort of substance still in the fabric if the lines come back at a certain temperature!
But they don't if you wash them. Once you wash with detergent, the lines are permanently gone; at least in every case I've used them.
Whether or not archival is important to people is up to them. No, they are not archival quality, and Pilot doesn't say they are. That said- I know a number of well-sold art quilters who use SHARPIES on their quilts (non-removable, obviously). Me personally, it will be a happy accident if my quilt makes it to 50-100 years old, so I don't worry about the archival quality, especially since I wash it out.