Thanks for the elaboration. It sounds to me like the fabric actually tore, on both top & bottom of the plastic - and that makes me question the material! That Tyvek stuff is pretty much impossible to tear. Having multiple hinges on the same surface, all torn both sides.... I'm having trouble believing that was Tyvek. Which it should have been.

One more question, though. When you hinged this... was there any gap at all? I ask because a tightly hinged elevator, with no gap, would cause some serious stress on the fabric, with each big deflection. Not being cricital, just trying to learn more about the possibilities, here.

Sorry for your loss. Thanks again,

Good luck,
Dave Olson