Quote Originally Posted by FlyingRon View Post
All fabrics these days are Polyethylene Terephthalate (aka Dacron), a polyester weave. There are a few different brands of this, most paired with their own products to apply and finish. It has entirely replaced cotton/dope in flying aircraft. The only thing you don't want to do is use the old cotton techniques for application and testing on dacron fabrics.

Several years ago I was at a fabric covering forum (not the full workshop) at Oshkosh. I don't remember for sure, but I believe it was someone from Polyfiber doing the presentation, and he said there was only one mill making aircraft Dacron, and they were making it for both Ceconite and Polyfiber. They were both exactly the same stuff, except for the name printed down the edge. Of course, if you're doing a certificated aircraft you are required to use the chemicals that match what is printed on the cloth. And this is only a guess because I have never used Stewart, but I would guess it is also the same.
Dave