That Wonder Under has a shelf life? While making up samples for my applique class earlier this week the Wonder Under I was using shredded my piece when I tried to remove the paper.
Nice, huh? I've never had this happen so I tried it on different fabric, made sure I followed the directions exactly and got the same result. The stuff was pretty ancient (probably over 5 yrs or more) so I wasn't totally surprised. Got new stuff and it worked just fine. Top piece is the old stuff, bottom piece is the new. Lesson learned.