This is an update...I just got a sheet of .080" clear Plexi-glass for the Jet Pack's backing plate (closure). I'll try to experiment with it to see what happens. For God's sake...I WAS LOOKING FOR STYRENE OR ABS PLASTIC!!! No more traveling, no more hassles, no more "we don't sell/have that kind of plastic here", no more "what's that?"!!!!!!!
This is the last time I'm dealing with this, and I'm going nuts already, besides of wasting money and time. If it doesn't gets right...somebody sell me a piece of plastic for this @#$%&* project! Just a little piece, at least 20"x 20". I'll keep you posted of the progress.