Thank you darnthedog. Reading about dacron makes it sound like a very good product for my use. One thing about canvas was I couldnt figure out was how to stretch it taut with all the uneven surfaces and curves. dacron and some heatnbond tape and an old iron may make that part relatively simple. Google found a company called aircraft spruce canada for the fabric. Michaels craft store sells a product called heatnbond tape which might be good around the edges to hold the fabric before ironing. Any thoughts on that will be appreciated. Once again, thanks.