I don’t know if these are old news or not ( I’ve seen them for sale here…and lots for sale here). I saw them at quilt market but hadn’t whipped mine out until a few weeks ago to mark a quilting line. You draw the line on the fabric with the pen…
The sweep a warm iron over the fabric and the line disappears….genius! I don’t even think these are just for fabric because since I’ve had mine I saw the checker at my grocery store using one. I wanted to swipe it from him.
Since the iron just has to be barely warm…it’s been hours of entertainment for my kids. If I press too hard (like I did on the line above) I can see a small indentation line after I’ve ironed the pen away…but it goes away after a few minutes. Fun huh?
Note: Lots of you said that the ink comes back after it’s exposed to cold. So I guess don’t use these anywhere that will be visible…but for marking lines to make triangles, etc. they are awesome!