Originally Posted by dukestravels07
Should I order 4 yards of material or would that be unnecessary for this?
More "length" won't help the "Height" requirements. Your simply going to have to stretch the bejesus out of it, vertically. Use the stretching Pattern I posted, as it makes you focus first on doing the "center" Width area first.
Also, to accommodate the stretch, I don't mind making a completely square frame. Would this actually make the stretch easier?
No...unless you reduce the height aspect, there would be no advantage, and other disadvantages.
Does there HAVE to be another layer of spandex BEHIND the screen? I would like to avoid an extra $36 of material if something cheaper could be used.
Nope...ya simply gotta spring for the cost of dual layers. Spandex, especially stretched really tight, will let appreciable amounts of light pass through. The Second layer helps arrest that loss because it lies directly against the top layer. If the Second layer is a bright White, optimal reflection of projected light back toward the viewer will be achieved. If it's Gray / Silver, then Contrast will be enhanced, but at a additional cost in brightness since Gray / Silver will not reflect as much light as White.
I guess I don't understand the way spandex works as light goes through the screen. Does the back layer reflect more light back?
Hmmmmm....let me see.........,