Originally Posted by
Peckish
Ooof this made me cringe a bit. Heat doesn't "remove" the ink marks; it just makes it disappear from view. I'm not talking about if your quilt gets cold, the marks will come back. I'm talking about the ink permanently living in the fibers, and the manufacturers of the Frixxion pens stating that those pens are not for use on fabric. I know too many people who have had quilts ruined by those pens, even after exposing to heat, washing, etc.
Yeah - I get that. For the most part I only use the pens for cutting lines and other places where I could probably not bother to make it disappear. In this instance, drawing on the PnS and sewing over the lines, any remaining ink (visible or not) is hidden by the thread anyways so if it "comes back" it likely won't be seen.