I did the trick where you put the Saran wrap over the epoxy on a wing joint then squeegee it under the wrap. It give you a smooth glassy finish if done right. It worked as advertised until i went to peel the wrap off. The wrap was gone! It dissolved between the tacky period and the final cure of the epoxy. I had checked on it about half way through to make sure it was working. The wrap peeled back with no problems. The next morning, no more Saran Wrap. No big deal in this case, but if I had put it under the epoxy for a gear door, I would have been a bit miffed!.