I've these pens at Target in the supplies dept.

kellen, actually yrs ago my DH had swim trunks, that when dry was just orange however, when they got wet turtels appeared..........they were so neat............I hope someone here comes up with the method here at this site so we could all do that with fabric.....ppl here are so clever.........calla

It is a Pilot Frixion. My hubby bought me a set of them. I love em!! They are called erasable pins, but they disappear with the heat of the iron.

Yes that would be neat....there is always an up to any downside....

Speaking of pens....Sharpies has new pen out called Stained that is just for marking on fabric...I have seen samples done as graffiti on canvas shoes..any other unusual ideas...Also if you color some lines and such on cotton or silk fabric with sharpie markers, then spray with rubbing alcohol the inks will bleed and blend and can be heat set for permanence. I have done some silk scarves and and on fat quarters I really like the effect...anyone else tried this?

I bought my set at Target. I marked very heavy with the red on a white fabric. The red did come out with the heat of the iron, but you could still see where it had been. I will use them for some things, but to mark tops.

Here is another posting that just came up on this pen.

http://www.quiltingboard.com/t-163965-1.htm

I know that it's true the marks come back if you put your quilt in the freezer, but who in real life does that? Maybe, in the old days, when the Super Bowl was held in outdoor stadiums in weather so cold the coffee froze it would have made a difference if you wrapped up in a quilt but now, unless you left your quilt in your car in a blizzard, what are other circumstances where the mark would get cold enough to come back? froggyintexas

They are cheaper in office supply stores. They were not made for quilters but as an erasable gel pen..

I got some on sale 2 for $3.75 in a small town hardware store.

I have read that this pen will show its markings again if it gets down to a certain temperature, but I don't remember what that temperature was. FYI to check on.

Oops I should have read previous emails.