I tried something different and it worked so good I thought I would share it here. This time I used Gorilla glue, and held the sheeting in place with 6" stretch wrap. It held the sheet tight and popped right off with a slice from my exacto. It was especially nice as I was dealing with a painted areas and didn't want to use tape. I have pictured the roll of stretch wrap I used. It can be found at Walmart among other places. No pins, no tape, and the Gorilla glue gives you time to get everything where you want it. The stetch wrap holds the wood tight to the sides and gives even pressure over the whole structure, and again, was very easy to remove..