Fabric that I got at a fabric store. Cost me all of $6 for 2 yards, enough to do at least 2 planes.  The dope is what costs, and you need plenty of it. Those little jars, I went through one already, one coat on the wing, two coats on the elevator and rudder, then whatever I needed to stick the cloth to the rudder and seal it, and the portion done here. <div>
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