I thought that stuff looked familiar.  I've used it to help seal any small gaps in my ductwork so that my furnace is a little more efficient.  I am getting my other odd projects finished up, so soon i will be able to get mine outta the box and give it a go.  I have looked in the box and am pleasently surprised at how well it is package (BUBBLE WRAPPED).  This will be my first aeroworks plane and probably not my last.