Bob, got to thinking about this dilemma. It would be worth the experiment. Will try out my "tremclad" theory this weekend as I've some left over webbing. Another thought would be to get some drivewy sealer or roofing tar and try to duplicate. The original material was only tar-impregnated canvas web anyhow. I've seen the mil-spec web at shows, most surplus dealers carry it, guys like Weebee webbing etc. Will try it out and get back on it.